technical manual - tavrida.com · 2.3.1 accessories supplied with ism ... cm control module vi...

0 1 . 0 1 . 2 0 1 5 TE

CH

NIC

AL

M

AN

UA

L

Excellence in Engineering

A S T A V R I D A E L E C T R I C E X P O R T

WWW.TAVRIDA.EU

VACUUM CIRCUIT BREAKERS LD and Shell type

2

CONTENTS ABBREVIATION 6 TECHNICAL MANUAL 71. PRESENTATION 71.1 Indoor switching modules (ISM) 71.2 Control modules (CM) 81.3 Adaptation chassis 81.4 Main advantages of TEL modules 82. SELECTION 92.1 Selection parameters for ISM 92.1.1 List of Indoor Switching Modules, available for purchase 102.2 Selection parameters for control modules (CM) 112.2.1 List of Control Modules, available for purchase 122.3 Accessories 132.3.1 Accessories supplied with ISM 132.3.2 Accessories supplied with control modules (CM) 143. DESIGN OF ISM 153.1 Overall design of ISM LD 153.1.1 Magnetic actuator 163.2 Overall design of ISM Shell 173.2.1 Labyrinth pulling insulator 183.2.2 Two-gap design magnetic actuator 183.2.3 Interlocking mechanism 193.2.4 Position indicator with a flexible cable link 213.3 Auxiliary switches 223.4 Wiring terminations 233.4.1 Terminal arrangement for the three-phase ISM 233.4.2 Terminal arrangement for the single-phase ISM 233.5 Vacuum interrupters 244. OPERATION OF ISM 254.1 Closing 254.1.1 Manual closing 254.2 Opening 264.2.1 Manual opening 264.3 Manual closing generators 264.3.1 Selection parameters for manual generators 274.3.1.1 List of manual generators, available for purchase 284.3.1.2 Umbilical connector for manual generator 294.3.2 Manual close generator connection diagram with CM_16 - Emergency supply 295. TECHNICAL SPECIFICATION OF ISM 305.1 ISM15_LD_1 305.2 ISM15_Shell_2 315.3 ISM25_LD_1 325.4 ISM25_Shell_1 336. OVERALL DIMENSIONS OF ISM 346.1 Overall dimensions of ISM LD 346.2 Overall dimensions of ISM Shell 387. CONTROL MODULES (CM) 417.1 Product range 418. DESIGN OF CM 438.1 Designation of control module terminal connector contacts 439. OPERATION OF CM 449.1 Operational modes 449.1.1 Open 449.1.2 Closed 44

WWW.TAVRIDA.EU

TECHNICAL MANUAL

3

9.1.3 Blocked Open 449.1.4 Blocked Closed 449.2 Designation and operation of inputs 449.2.1 Dry CLOSE inputs 449.2.2 Dry TRIP inputs 449.2.3 Power inputs 459.2.4 Current power supply inputs 459.2.5 USB input 459.3 Designation and operation of outputs 459.3.1 Actuator Coil output 459.3.2 Auxiliary switch contact output 459.3.3 Ready output 469.3.4 Failure output 469.4 Indication 479.4.1 Conditions for generating indication signals 479.5 CM malfunction detection 479.6 Troubleshooting procedure for CM and ISM 4710. TECHNICAL SPECIFICATION OF CM 4811. APPLICATION GUIDE 5011.1 Incoming inspection 5011.2 Mounting of ISM 5111.2.1 Mounting of ISM LD 5111.2.2 Additional insulation for ISM LD 5211.2.3 Main terminal connections for ISM LD 5211.2.4 Insulating hood mounting 5311.2.5 Mounting of ISM Shell 5411.2.6 Main terminals connection for ISM Shell 5411.2.7 ISM Shell indicator installation 5511.2.8 Main terminal connection for ISM Shell 5611.2.9 Additional insulation for ISM Shell 5711.2.10 Earthing 5811.2.10.1 Earthing of switching modules 5811.2.11 Auxiliary circuit termination 5911.3 Interlocking 6011.3.1 Switchgear interlocking 6011.3.2 ISM LD interlocking interface 6011.3.3 Interlocking interface limitations 6111.3.4 Electrical Interlock 6111.3.5 Connection of the position indicator 6111.3.6 Connection of manual trip facility 6111.3.7 ISM Shell interlocking 6211.3.8 Cable link interlock (CLI) 6311.4 Mounting of control module 6411.4.1 CM Installation 6511.4.2 Recommendations for CM control module wiring connections 6711.4.3 Earthing 6712. TYPICAL CONNECTION DIAGRAMS 6812.1 Typical CM connection diagram with ISM 6812.2 Current supply connection diagram (application with CM_16_2(220)) 6913. ROUTINE TESTS 7014. COMMISSIONING TESTS 7114.1 General 7114.2 Operation test 7114.3 High voltage test 7114.4 Auxiliary insulation resistance test 71

WWW.TAVRIDA.EU


4

14.5 Main contact resistance test 7115. MAINTENANCE 7215.1 Operation test 7215.2 High voltage test 7215.3 Auxiliary insulation resistance test 7215.4 Main contact resistance test 7216. MARKING 7316.1 Marking of switching modules 7316.2 Marking of control modules 7317. SEALING 7417.1 Sealing of switching modules 7417.2 Sealing of control modules 7418. PACKAGING 7518.1 Packaging of switching modules 7518.2 Packaging of control modules 7719. STORAGE 7820. TRANSPORTATION 7821. DISPOSAL 7822. WARRANTY 7823. DELIVERY SET 7824. AMENDMENT SHEET 7925. TYPE TESTS 8026. ATTACHMENTS 8126.1 Arcing time minimization 8126.2 Fast transfer switch 8226.3 Mounting of surge arresters 8527. NOTES 86

WWW.TAVRIDA.EU

TECHNICAL MANUAL

5

Copyright © Tavrida Electric, All Rights Reserved

This document is copyrighted and is intended for users and distributors of Tavrida Electric products. It contains information that is the intellectual property of Tavrida Electric and this document, or any part thereof, should not be copied or reproduced in any form without prior written permission of Tavrida Electric.

is a trademark of Tavrida Electric and should not be reproduced or used in any way without written authorization.

Tavrida Electric applies a policy of ongoing development and reserves the right to change products without prior notice. Tavrida Electric does not accept any responsibility for loss or damage incurred as a result of acting or refraining from acting based on information in this Technical Manual.

It is absolutely necessary to read this document carefully before starting the installation or opera-tion of Indoor Switching Modules ISM and control modules CM switchgear and to adhere to the instruc-tions and the relevant regulations contained in it.

SAFETY FIRSTMake sure that during installation, commissioning and operation, the respective legal regulations (such as IEC) and appropriate national safety regulations are adhered to.

Make sure that the installation, commissioning and operation are carried out by electrical specialists.

Only install the switchgear in closed rooms designated for electrical equipment.

Make sure that the specified data are not exceeded during switchgear operation.

Make sure that this manual is available to all persons involved with installation, commissioning and operation.

Note especially the important or dangerous information that is marked as follows in this manual:

The user’s personnel must act responsibly in all matters affecting safety at work and correct handling of the switchgear.

WARNING!

Always follow the instruction manual and respect the rules of good engineering practice!Hazardous voltage can cause electrical shocks and burns. Disconnect power, then earth and short-circuit before proceeding with any work on this equipment.

Low voltage devices (mainly control modules) of all types meet the requirements of the EMC Directive 2006/95, the Low Voltage Directive 2004/108

WWW.TAVRIDA.EU


6

ABBREVIATION

ISM Indoor Switching Module

CM Control Module

VI Vacuum Interrupter

CO Close-Open

TEL Tavrida Electric (registered TM)

TEE AS Tavrida Electric Export

NC Normally Closed

NO Normally Open

DOU Draw-Out Unit

NA Not Applicable

PCB Printed Circuit Board

CLI Cable Link Interlock

WWW.TAVRIDA.EU

TECHNICAL MANUAL

7

TECHNICAL MANUALThis manual provides general information and technical specifications, intended for the selection of TEL indoor vacuum circuit breakers.

1. PRESENTATION

TEL vacuum circuit breakers consist of three main components:• Indoor Switching Modules• Control Modules• Adaptation Chassis

These modules are based on the latest switching and electronic control technology and can be used as core compo-nents for medium voltage switchgear.

ISM LD

Figure 1: ISM LD

Tavrida Electric has supplied more than 500,000 pairs of modules used in over 80 different types of switchgear (both retrofitted and brand new).

Figure 3: K-12 retrofit

Figure 4: LMT retrofit

ISM Shell

Figure 2: ISM Shell

The second generation of switching module called the ISM Shell is for higher ratings applications.

Figure 5: SG_Mile switchgear draw-out unit

Figure 6: BBC (Calor Emag ZE4) retrofit

1.1 Indoor switching modules (ISM)

ISMs are used to close and open primary circuits.A switching module includes three poles mounted on a metallic frame. Each pole contains a vacuum interrupter. Contacts of the vacuum interrupter are electrically connected with terminals. The terminals

are intended for external connections by busbars or contact arms and fastened to the frame via support insulation. Movable contact of vacuum interrupter is coupled by pulling insulator with coaxial magnetic actuator.

WWW.TAVRIDA.EU


8

1.2 Control modules (CM)

Table 1: Control modules (CM)

Control module type Rated supply voltage, V

CM_16_1(60) 24/48/60 DC

CM_16_2(220) 110/220 DC; 100/127/220 AC

Control modules are used to provide control (close and open operations) of the ISM in conjunction with pro-tection systems.

Control modules are electronics-based units which contain built-in close and trip capacitors. These ca-pacitors are discharged into the actuator coil in differ-ent directions to provide appropriate operations. When associated with any switchgear, a switching module and a control module must be used together. The ease of choosing switching and control modules separately allows any type of switchgear to be easily configured with regard to its primary and auxiliary circuits.

CM provide the following functionality:• fast close and trip operation;• automatic reclosing;• anti-pumping;• blocking;• circuit breaker trip and close coil circuit supervision;• a self-diagnosis monitoring system with failure sig-naling

Figure 7: CM_16_1(60)

CM_16_1(220)CM_16_2(220)

1.3 Adaptation chassis

An adaptation chassis is a set of parts needed for the ISM to fit inside different switchgear panels. An adap-tation chassis usually consists of a breaker truck, mounting frame, interlocks, busbars and primary con-tacts.

Figure 8: Adaptation chassis of ISM

1.4 Main advantages of TEL modules

The development of these modules has involved many years of R&D effort by Tavrida Electric scientists and engineers thereby insuring that their use in your switchgear will allow customers to benefit fully from their unique combination of features:• no maintenance needed during entire life time (mini mum 30 years);• closing and tripping of the circuit breaker within ex-tremely short times;• long mechanical and interrupting life;• fast automatic reclosing cycles: O - 0.3 s – CО – 10 s – CО;• easy adaptation to any primary interface (stationary or withdrawable);• easy adaptation to any signaling interface;• easy SCADA compatibility;• low power consumption;• compact dimensions and light weight;• manual closing of the circuit breaker in case of auxi-liary voltage absence.

Low-body vehicle

Movable contacts

WWW.TAVRIDA.EU

TECHNICAL MANUAL

9

2. SELECTION

2.1 Selection parameters for ISM

Indoor Switching Modules are available in two different types:• ISM15 – Indoor Switching Modules up to 17.5kV;• ISM25 – Indoor Switching Modules up to 24kV.

A combination of technical parameters forms at unique code, giving an exact description to the customer of what type of Indoor Switching Module is to be ordered.

The basic groups, subgroups, types and parameters of the ISM are presented below: Table 2: Selection parameters for ISM

Classifier Group Abbreviation Description

GROUPISM15 Indoor Switching Modules up to 17.5kVISM25 Indoor Switching Modules up to 24kV

SUBGROUPLD

Indoor switching modules with lexan cap-type insulation. Two interlocking pins. One-side auxiliary circuit termination

Shell Indoor switching modules with Shell-type insulation. One-side auxiliary circuit termination

TYPE

1 Available: ISM15_LD_1, ISM25_LD_1, ISM25_Shell_12 Available: ISM15_Shell_23 Available: ISM25_LD_3 (Single Pole ISM)6 Available: ISM15_LD_6

PARAMETER

Parameter Parameter description Description

150

(A) Pole distance

150mm

210 210mm

275 275mm

250 250mm

133 133mm

12(B)

Rated voltage

12kV

17.5 17.5kV

24 24kV

16

(C) Rated short-circuit breaking current

16kA

20 20kA

25 25kA

31.5 31.5kA

630

(D) Rated current

630A

800 800A

1000 1000A

1250 1250A

1600 1600A

2000 2000A

2500 2500A

Xx_X_x(x_x-x-x)

GROUP

SUBGROUP

TYPE

PARAMETERS

Para

met

ers ( x _ x - x - x )

A B C D

X – letters, x - numbers

WWW.TAVRIDA.EU


10

2.1.1 List of Indoor Switching Modules, available for purchase

Table 3: List of Indoor Switching Modules, available for purchase

General Parameters

GROUP SUBGROUP TYPEPole distance,

mmRated voltage,

kV

Rated short-circuit breaking

current, kA

Rated current, A

ISM15 LD 1 150 12 20 630

ISM15 LD 1 150 12 20 1000

ISM15 LD 1 210 12 20 630

ISM15 LD 1 210 12 20 1000

ISM15 LD 1 250 12 20 630

ISM15 LD 1 250 12 20 1000

ISM15 LD 6 133 12 20 630

ISM15 Shell 2 150 12 20 1250

ISM15 Shell 2 150 12 25 630

ISM15 Shell 2 150 12 25 1250

ISM15 Shell 2 150 12 31.5 630

ISM15 Shell 2 150 12 31.5 1250

ISM15 Shell 2 150 17.5 20 1250

ISM15 Shell 2 150 17.5 25 630

ISM15 Shell 2 150 17.5 25 1250

ISM15 Shell 2 150 17.5 31.5 630

ISM15 Shell 2 150 17.5 31.5 1250

ISM15 Shell 2 210 12 20 1250

ISM15 Shell 2 210 12 20 2000

ISM15 Shell 2 210 12 25 630

ISM15 Shell 2 210 12 25 1250

ISM15 Shell 2 210 12 25 2000

ISM15 Shell 2 210 12 31.5 630

ISM15 Shell 2 210 12 31.5 1250

ISM15 Shell 2 210 12 31.5 2000

ISM15 Shell 2 210 17.5 20 1250

ISM15 Shell 2 210 17.5 20 2000

ISM15 Shell 2 210 17.5 25 630

ISM15 Shell 2 210 17.5 25 1250

ISM15 Shell 2 210 17.5 25 2000

ISM15 Shell 2 210 17.5 31.5 630

ISM15 Shell 2 210 17.5 31.5 1250

ISM15 Shell 2 210 17.5 31.5 2000

ISM15 Shell 2 275 12 20 1250

ISM15 Shell 2 275 12 20 2000

ISM15 Shell 2 275 12 25 630

ISM15 Shell 2 275 12 25 1250

ISM15 Shell 2 275 12 25 2000

ISM15 Shell 2 275 12 25 2500

ISM15 Shell 2 275 12 31.5 630

ISM15 Shell 2 275 12 31.5 1250

ISM15 Shell 2 275 12 31.5 2000

ISM15 Shell 2 275 12 31.5 2500

ISM15 Shell 2 275 17.5 20 1250

ISM15 Shell 2 275 17.5 20 2000

ISM15 Shell 2 275 17.5 25 630

ISM15 Shell 2 275 17.5 25 1250

ISM15 Shell 2 275 17.5 25 2000

ISM15 Shell 2 275 17.5 25 2500

ISM15 Shell 2 275 17.5 31.5 630

WWW.TAVRIDA.EU

TECHNICAL MANUAL

11

General Parameters


mmRated voltage,

kV

Rated short-circuit breaking

current, kA

Rated current, A

ISM15 Shell 2 275 17.5 31.5 1250

ISM15 Shell 2 275 17.5 31.5 2000

ISM15 Shell 2 275 17.5 31.5 2500

ISM25 LD 1 210 24 16 800

ISM25 LD 1 275 24 16 800

ISM25 LD 3 - 24 16 800

ISM25 Shell 1 210 24 25 630

ISM25 Shell 1 210 24 25 1250

ISM25 Shell 1 210 24 25 1600

ISM25 Shell 1 275 24 25 630

ISM25 Shell 1 275 24 25 1250

ISM25 Shell 1 275 24 25 1600

Example

ISM15_LD_1(150_12-20-630)Table 4: ISM15_LD_1(150_12-20-630) description

ISM15 Indoor Switching Modules up to 12kV

LD Indoor switching modules with lexan bell-type insulation. Two interlocking pins. One-side auxiliary circuit termination

1 ISM15_LD_1

150 Pole distance 150mm

12 Rated voltage 12kV

20 Rated short-circuit breaking current 20kA

630 Rated current 630A

2.2 Selection parameters for control modules (CM)

X_x_x(x_ISMx-Xx)

GROUP

SUBGROUP

TYPE

PARAMETERS

Para

met

ers ( x _ ISMx - Xx)

A B C


Prior to ordering the CM_16_1(2) control module, it is necessary to take into consideration the type of ISM15(25) that will be used in conjunction with the CM.

A combination of technical parameters forms at unique code, giving exact description to customer of the type of control module is to be ordered. The basic group, subgroup, type and parameters of the CM are presented below.

WWW.TAVRIDA.EU


12

Table 5: Selection parameters for CM

Classifier Group Abbreviation Description

GROUP CM Control module

SUBGROUP 16 16 series with USB interface

TYPE

1Designed for applications with AC or DC power supply and for all types of relay protection

(without supply from current circuits)

2 Has current supply inputs and can be used in schemes with any type of supply

Parameter Parameter description Description

PARAMETER

60 (A) Rated supply voltage

24/48/60 VDC

220 110/220 VDC; 100/127/220 VAC

ISM15 (B)Group of circuit breaker

Indoor Switching Modules up to 17.5kV


LD1

(C)Subgroup and type of

circuit breaker

Indoor Switching modules with lexan bell-type insulation. Two interlocking pins. One-side auxiliary circuit termination. Three poles.

LD3Indoor Switching Modules. Shaft outlet. One-side auxiliary circuit termina-

tion. Single pole.

Shell1Indoor switching modules with Shell-type insulation. One-side auxiliary

circuit termination. Three poles

Shell2Indoor switching modules with Shell-type insulation. One-side auxiliary

circuit termination. Three poles

2.2.1 List of Control Modules, available for purchase

Table 6: List of Control Modules, available for purchase

General Parameters

GROUP SUBGROUP TYPERated supply

voltage, VGroup of circuit breaker

Subgroup and type of circuit breaker

CM 16 1 60 ISM15 LD1

CM 16 1 60 ISM15 LD3

CM 16 1 60 ISM15 Shell2

CM 16 1 60 ISM25 LD1

CM 16 1 60 ISM25 LD3


CM 16 1 220 ISM15 LD1

CM 16 1 220 ISM15 LD3


CM 16 1 220 ISM25 LD1

CM 16 1 220 ISM25 LD3


CM 16 2 220 ISM15 LD1

CM 16 2 220 ISM15 LD3


CM 16 2 220 ISM25 LD1

CM 16 2 220 ISM25 LD3


Example CM_16_1(60_ISM25-Shell1)

Table 7: CM_16_1(60_ISM25-Shell1) description

CM Control module

16 16 series with USB interface

1 Designed for applications with AC or DC power supply and for all types of relay protection (without supply from current circuits)

60 24/60 VDC


Shell1 Indoor switching modules with Shell-type insulation. One-side auxiliary circuit termination. Three poles

WWW.TAVRIDA.EU

TECHNICAL MANUAL

13

2.3 Accessories2.3.1 Accessories supplied with ISM

Table 8: Accessories supplied with ISM Shell

Accessories supplied with ISM Shell

Main contacts position indicatortogether with flexible cable

Unit_PosInd_3

Length of flexible cable is 1mCbcomp_DOU_Flexible-Cable (TEE030.370.04)

WAGO screwdriver Unit_Screwdriver_1To connect auxiliary wires to

terminals

Table 9: Accessories supplied with ISM LD

Accessories supplied with ISM LD

WAGO screwdriver Unit_Screwdriver_1To connect auxiliary wires to

terminals

Table 10: Parts that can be ordered additionally

Parts that can be ordered additionally if required

Resistors Insulation covers for ISM Shell (use table below)

Heatsinks CBcomp_Heatsink_1(ITEA442611.01-03) for ISM LD with 1000A rated current

Insulation covers for ISM LD type:

FS-DG_Det_Plastins_48FS-DG_Det_Gasket_38

FS-DG_Det_RubberIns_19FS-DG_Det_Plastins_49

See RetroDoc_TM_CBkit(URK_050309_EN) manual for a full list of accessories.

Table 11: Insulation covers application with suitable Shell-type ISM15 and ISM25

Insulation covers application with suitable Shell-type ISM15 and ISM25

ISM15,ISM25

CB type

ISM15_Shell_2(150_L),ISM15_Shell_2(210_L)

ISM15_Shell_2(210_H),ISM15_Shell_2(275_H)

ISM15_Shell_2(210_H),ISM15_Shell_2(275_H)

ISM15_Shell_2(275_H)ISM25_Shell_1(210),ISM25_Shell_1(275)

ISM25_Shell_1(210),ISM25_Shell_1(275)

ISM25_Shell_1(275)

Rated current,A

630, 1250 1250 2000 2500 630 1250 1600

Lower insula-tion cover type

CBcomp_ PlastIns_1(50)







Upper insulation cover type

CBcomp_PlastIns_2(205_50_L)

CBcomp_PlastIns_2(205_50_H)






WWW.TAVRIDA.EU


14

2.3.2 Accessories supplied with control modules (CM)

Table 12: Accessories supplied with control modules (CM)

Accessories supplied with control modules

Detail name Stock number qty Description View

Screw driver - 1 pc.Opening of WAGO

connectors

Holder Det_Holder_84 2 pcs.Installation onto horizontal surface

Plastic capCMdet_cover_

USB(726141003)1 pc.

USB-device connector seal

Bolt DIN 933 – M4 x 10 1 pc.Fixing of earth cable on control module special

openingSpring washer DIN 127 – A4 1 pc.

Washer DIN 125 – A4,3 1 pc.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

15

3. DESIGN OF ISM

3.1 Overall design of ISM LD

In contrast to the majority of conventional circuit breakers, this patented design incorporates three in-dependent magnetic actuators: one per pole. This minimizes the number of moving parts and makes all of these parts coaxial.

The vacuum interrupter and the magnetic actuator are lo-cated at opposite ends of a hollow support insulator. The actuator armature is rigidly coupled to the vacuum inter-rupter moving contact by a linear drive insulator within the support insulator. This provides direct line ar move-ment in both directions and avoids the use of rotating

shafts, bearings and bell cranks. The result is a mainte-nance free ISM with a long trouble-free mechanical life.

The actuators are situated inside the frame as shown in the figure below. A synchronising shaft connects the three poles and performs three functions:• opening synchronization of the poles;• operation of auxiliary switches;• link drive for mechanical interlocks on switchgear.

The design of the three-pole ISM LD is shown in the figure below.

Figure 9: Overall design of ISM LD��

vacuum interrupter

frame

synchronizing shaft

micro switches

interlocking pin

magnetic actuator

shaft interlocking interface

WWW.TAVRIDA.EU


16

3.1.1 Magnetic actuator

The actuator is held in its end positions without the use of mechanical latches:• in the OPEN position the armature is held by the opening spring;• in the CLOSED position the armature is held by the magnetic flux produced by a ring magnet.

This actuator has only one coil. To close and trip the actuator it is necessary to inject current into the coil in different directions.

Figure 10: Overall design ISM LD magnetic actuator

WWW.TAVRIDA.EU

TECHNICAL MANUAL

17

3.2 Overall design of ISM Shell

The vacuum interrupters (VI) are embedded into poly-meric coverings and sealed with rubber rings to increase their external dielectric strength. Stationary contacts of VIs are fixed to the upper contact terminals. The actua-tor armatures are coupled to the moving contacts of the VIs with linear pulling insulators through the contact pressure and opening springs. This structure provides direct linear movement in both directions and avoids the use of rotating shafts, bearings and bell cranks. The above-mentioned movable system is covered with the

support insulators. The result is a maintenance-free ISM with a long trouble-free mechanical life.Armatures of each pole rotate common synchroni-zing shaft. Auxiliary contacts are operated with cams mounted on the shaft when the switching module is passing from one state to another. Simultaneously, the cable link of the main contacts position indicator is influenced and the corresponding symbol becomes vi-sible through the transparent inspection window of the indicator.

frame

synchronizing shaft

shaft interlocking interface

microswitchesmagnetic actuator

Figure 11: Overall design ISM Shell

Figure 12: Overall design ISM Shell magnetic actuator

Support insulator

Upper contact terminal

Vacuum interrupter

Lower contact terminal

Pulling insulator

Opening spring

Actuator stator

Actuator coil

Contact pressure spring

Labyrinth insulation

Position indicator cable limitTrunnion

MicroswitchesActuator armatureActuator stroke limiter

Synchronizing shaft

WWW.TAVRIDA.EU


18

The ISM Shell has the following features:

Table 13: Features of ISMDistinguishing

featureAdvantage

New generation of vacuum interrupter

Highly reliable behavior of the module during both making and breaking opera-tions, compactness and light weight of the module

Labyrinth design of pulling insulator

High level of dielectric strength of the module in spite of its compactness, appli-cable for various-types of switchboards

Crown-type flexible contact

Low resistance of main circuit and long mechanical life of the module

Magnetic actuator with two gaps

Applicability of the module to short circuit currents corresponding to 31.5kA of breaking and making capacity

New approach to interlocking mechanism

Easy coupling with various types of switch-board interlocks and safety operation of the module

Flexible connection with main contacts position indicator

Mounting of the module into switchgear irrespective of total architecture of the cabinet front cover

Extruded contact terminals

Effective cooling of main circuits, mec-hanical strength of the module enough for peak short-circuit withstand, light weight of the module, easy mounting of bars and contact arms

3.2.2 Two-gap design magnetic actuator

The second generation module is equipped with new type magnetic actuator, which consists of two perma-nent magnets. In general, these parts are almost iden-tical to each other. The use of the two-gap magnetic

3.2.1 Labyrinth pulling insulator

The pulling insulator is designed so that the arc-over path between live and earthed parts (see arrows) has a section, where the electric discharge has to overcome the electrostatic field. This design provides high di-electric strength at the small overall dimensions of the insulator.

actuator design allows the magnetic holding force to double without actuator extension.

Stator

Inner ring gap of the magnetic system

Outer ring gap of the magnetic system

Coil rings

Coils

Armature

Figure 13: ISM Shell in „Closed” position Figure 14: ISM Shell in „Open”position

Figure 15: Labyrinth pulling insulator

WWW.TAVRIDA.EU

TECHNICAL MANUAL

19

3.2.3 Interlocking mechanism

The interlocking mechanism of the module is based on the operation of an interlocking shaft that can be rotat-ed counter- or clockwise. The interlocking mechanism is specially designed to avoid strong coupling bet ween the magnetic actuator and the disconnectors of the switchboard and to provide safe operations. For this purpose both mechanical and electrical interlocks are concentrated in a special interlocking unit. This unit has an interlocking shaft and microswitch S14. When the interlocking shaft is rotated clockwise the module becomes acceptable for “Close” and “Open” instruc-tions. This position of the module is called “Released”. When the shaft is rotated in the reverse direction, i.e. counter-clockwise, the module comes into the “Open and Locked” position.

If the module is closed, rotation of the interlocking shaft from the “Released” position to the “Open and Locked” position leads to the manual tripping of the module (and, afterwards, mechanical blocking of the actuator in the “Open and Locked” position by a cam). The electrical interlock microswitch (see Auxiliary cir-cuit diagram) becomes open and, as a result, discon-nects the actuator coils from the control module. In the case of microswitch malfunction, the cam mechani-cally prevents the module from closing. If the module has been open before the operation of the shaft, the shaft rotation only effects the electrical and mechani-cal interlocks of the module.

Interlocking shaft positions

„Released“ position of interlocking shaft

Figure 16: ISM Shell in „Open“ position

„Open and locked“ position of interlocking shaft

Figure 18: ISM Shell in „Open and Locked“ position

If the ISM Shell is closed, 90° counter-clockwise rota-tion of the interlocking shaft results in manual tripping of the module and subsequent blocking of the actuator in the open position.

At this point the interlocking microswitch S14 opens, dis-connecting the actuator coils from the control module.

Figure 17: ISM Shell in „Closed“ position

WWW.TAVRIDA.EU


20

Stable positions of interlocking mechanism:a) „Open and locked“ position - Green color (rotated counter-clockwise) b) „Released” position - Red color (rotated clockwise)

Figure 20: „Released” position Figure 21: „Open and locked“ position

Figure 19: Stable positions of interlocking mechanism

WWW.TAVRIDA.EU

TECHNICAL MANUAL

21

3.2.4 Position indicator with a flexible cable link

The position indicator is not rigidly coupled to the module. It allows the load on the synchronizing shaft to be reduced during module operation. It simplifies mounting the position indicator on the switchgear or draw-out unit front panel.

The synchronizing shaft trunnion (there are two iden-tical trunnions; a customer can choose one of them: right or left, depending on the switchgear design) moves the stainless cord of the cable link.

The trunnion only draws the cord; reverse movement is provided with a spring installed inside the position indicator.

Note: Bending radius of the position indi-cator flexible cable link shall not be less than 40 mm to prevent a decrease in per-formance.

Figure 22: Position indicator shows that main contacts are open

Figure 23: Position indicator shows that main contacts are closed

Frame

Spring

Indicator plate

Window

Flixible cable fixing mechanism

Figure 24: Position indicator cross-section of side view

Figure 25: Position indicator front view

Four screws M4 or four self-tapping screws of appropri-ate diameter shall be used for indicator installation.

WWW.TAVRIDA.EU


22

3.3 Auxiliary switches

All three-phase switching modules are equipped with thirteen auxiliary switches, six normally open (NO) and seven normally closed (NC).All single-phase switching modules are equipped with four auxiliary switches, two normally open (NO) and two normally closed (NC).

Auxiliary switches are operated by a cam that is fitted on the synchronizing shaft. All others are available for external use. Auxiliary switch ratings are shown in the table below.

Table 14: Maximum Electrical AC Ratings

Maximum Electrical AC Ratings

VoltageVAC

Resistive loadA

Inductive loadA

250 5 5

Table 15: Maximum Electrical DC Ratings

Maximum Electrical DC Ratings

VoltageVDC

Resistive loadA

Inductive loadA

up to

30 5 3

250 0.25 0.03

WWW.TAVRIDA.EU

TECHNICAL MANUAL

23

3.4.2 Terminal arrangement for the single-phase ISM

Figure 28: Terminal arrangement for the single-phase ISM

Table 17: Terminal arrangement for the single-phase ISMXT1

Terminal № Connection Terminal № Connection1 NC Auxiliary switch 1 (1) 7 NO Auxiliary switch 42 NC Auxiliary switch 1 (2) 8 NO Auxiliary switch 43 NC Auxiliary switch 2 9 NO Auxiliary switch 54 NC Auxiliary switch 2 10 NO Auxiliary switch 55 NC Auxiliary switch 3 11 Actuator coil (1)6 NC Auxiliary switch 3 12 Actuator coil (2)

3.4 Wiring terminations

All switching modules have identical terminations as shown below.

WAGO cage clamps are used for the termination.

Wires are connected into the clamps using a special screw driver, supplied with each module. The WAGO clamps can ac-cept either solid or stranded wire within the range 0.5 - 2.5 sq mm.Insulation stripping length shall be 6-10 mm.

3.4.1 Terminal arrangement for the three-phase ISM

Figure 27: Terminal arrangement for the three-phase ISM

Table 16: Terminal arrangement for the three-phase ISMXT1 XT2

Terminal № Connection Terminal № Connection1 NO auxiliary switch 1(1) 15 NC auxiliary switch (1)2 NO auxiliary switch 1(2) 16 NC auxiliary switch (2)3 NO auxiliary switch 2(1) 17 NC auxiliary switch 7(1)4 NO auxiliary switch 2(2) 18 NC auxiliary switch 7(2)5 NO auxiliary switch 3(1) 19 NC auxiliary switch 8(1)6 NO auxiliary switch 3(2) 20 NC auxiliary switch 8(2)7 NO auxiliary switch 4(1) 21 NC auxiliary switch 9(1)8 NO auxiliary switch 4(2) 22 NC auxiliary switch 9(2)9 NO auxiliary switch 5(1) 23 NC auxiliary switch 10(1)

10 NO auxiliary switch 5(2) 24 NC auxiliary switch 10(2)11 NO auxiliary switch 6(1) 25 NC auxiliary switch 11(1)12 NO auxiliary switch 6(2) 26 NC auxiliary switch 11(2)13 Actuator coil (1) 27 NC auxiliary switch 12(1)14 Actuator coil (2) 28 NС auxiliary switch 12(2)

Figure 26: WAGO clamp

Normal position of the microswitches corresponds to the “open” position of the ISM main contacts.

Normal position of the microswitches corresponds to the “open” position of the ISM main contacts.

WWW.TAVRIDA.EU


24

3.5 Vacuum interrupters

As soon as the vacuum interrupter contacts open, the interrupting current initiates a so-called "vacuum arc" that burns essentially as plasma originating from evapo rated contact material. The current continues to flow through this plasma until a zero current is reached. At this moment the arc is extinguished and a transient recovery voltage appears across the open gap. If the contact surface is locally overheated, it produces a lot of vapour, resulting in the deterioration of the vacuum followed by an electrical breakdown. To avoid this, ef-fective control of the vacuum arc is necessary.

The most effective way to achieve this goal is to apply an axial magnetic field produced by the interrupting current itself. This method is implemented in vacuum interrupters developed and manufactured by Tavrida Electric for the ISM modules.

Several major benefits result from this design:• high interrupting capacity;• very compact dimensions;• low chopping current (4-5 amps) This limits induc-tive switching overvoltages to safe values;• axial magnetic field minimizes contact erosion and ensures a very long and reliable life.

Figure 29: The family of TEL vacuum interrupters

Figure 30: Finely dispersed vacuum arc resulting from stabilizing effect of axial magnetic field

WWW.TAVRIDA.EU

TECHNICAL MANUAL

25

4. OPERATION OF ISM

4.1 Closing

• In the OPEN position the vacuum interrupter con-tacts are held open by the force of the opening spring in the actuator acting through the pulling insulator.• To close the vacuum interrupter contacts a current pulse, derived from the closing capacitor in the control module, is injected into the actuator coil.• The current in the coil produces a magnetic flux in the gap between the stator and the armature.• The significant feature of control modules used with the ISM is the application of two non-equal clo sing capacitors. The first (smaller) capacitor discharges into the actuator coil during first 20 ms of the closing process, whilst the armature remains motionless and is held in the OPEN position. The purpose of the pre-discharge is to reduce the eddy current inside the ac-tuator frame during armature movement therefore the closing requires less energy. • Discharging the second (larger) capacitor initiates armature movement.• Rising coil current increases the magnetic flux and the electromagnetic attraction between the stator and the armature increases to overcome the restraining force of the opening spring (Line 1).• The armature, pulling insulator and moving contact start to move. • As the armature moves towards the stator the mag-netic air gap decreases and consequently the mag-netic attraction force increases. This increasing force acce lerates the armature, pulling insulator and mo-

ving contact to a closing speed of 1 m/s. This optimum speed ensures a complete absence of contact bounce and reduces the probability of pre-strikes of the vacu-um gap before the contacts close (Line 2).• The accelerating armature also generates a back emf in the coil and reduces the coil current (Line 1-2).• At contact close (Line 2) the moving contact stops but the armature travel continues for 2mm under rapid deceleration caused by compressing the contact pres-sure spring. • At the limit of its travel, the armature latches mag-netically to the stator. (Line 2a) The moving armature induced back emf collapses and the coil current again increases (Line 2a-3) saturating the permanent mag-nets, the armature and the stator.• This saturation increases the power of the perma-nent magnets to a level that generates the flux to hold the armature in the “Closed” position after the coil cur-rent has been cut off by an auxiliary switch. ( Line 3) Testing has proved that this flux is sufficient to hold the actuator “Closed” even under vibration and impact conditions.• The travel of the armature also compresses the ope-ning spring in preparation for the next opening opera-tion.

4.1.1 Manual closingClosing can only be carried out only through the con-trol module using portable generator. See clause 4.3.

Figure 31: Typical CO diagrams of the ISM switching module

WWW.TAVRIDA.EU


26

4.2 Opening

• To open the vacuum interrupter contacts, a current of opposite polarity, derived from the opening capaci-tor in the control module, is passed through the coil for 15-20 milliseconds (Line 4-5).• This current partially demagnetizes the permanent magnets and reduces the magnetic holding force on the armature (Line 4a).• Opposing forces from the charged opening spring and the contact pressure spring cause the armature to release and accelerate rapidly. After 2 mm of free travel it engages with the pulling insulator and thus with the moving contact. • The peak force produced by the armature at this point exceeds 2000 N ensuring easy breaking of any micro-welds at the contact surfaces which can appear due to short circuit current action. • The moving contact accelerates rapidly ensuring a high interrupting capacity (Line 5).• At full travel (Line 6) the armature, pulling insulator and moving contact assembly are again held open by the opening spring force.

4.2.1 Manual opening

The ISM Shell module may be opened manually by ro-tating counter-clockwise the interlocking shaft. The interlocking cam acts on the actuator armature, which then starts to move. As the air gap increases, the open-ing spring and contact pressure spring overcome any magnetic holding force and the circuit breaker opens.

Note: Maximum torque, applied on the in-terlocking shaft in any direction, shall not exceed 20 N*m. Otherwise, an excessive torque can cause damage of the module. To avoid this an additional torque limiter shall be used.

The ISM LD can be opened by rotating the synchroni-zing shaft or by pushing the interlocking pin inside the module.See Application Guide interlocking section.

4.3 Manual closing generators

The manual closing generator eliminates the need of a battery to perform the first close. Manual closing gene-rator is used to charge the CM close capacitors to per-form the first close in case of auxiliary power supply outage.The SGkit_ManGen hand-held generator does not re-quire a mounting kit. It is kept in the relay compart-ment and used when needed.The generator provides additional safety to an opera-tor, compared to manual closing mechanisms of con-ventional circuit breakers. The operator can step aside from the switchgear panel at a safe distance before ro-tating of the generator and closing the VCB.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

27

Table 18: Manual closing generators

Description Code Applicable control module Picture

Manual generator

SGkit_ManGen_02-110

SGkit_ManGen_02-30

CM_16_1(220)CM_16_2(220)

CM_16_1(60)

4.3.1 Selection parameters for manual generators

X_X_x(x)

GROUP

SUBGROUP

TYPE

PARAMETERS

Para

met

ers (x)

A


The supply of manual closing generators is available in two different types:

SGkit_ManGen_02-110 – manual generator kit for con-trol module CM_16_1(220) and CM_16_2(220).SGkit_ManGen_02-30 – manual generator kit for con-trol module CM_16_1(60).

Before ordering a manual generator, it is necessary to take into consideration what type of CM will be used together with generator.

A combination of technical parameters forms at unique code, giving exact description to customer as to what type of manual generator is to be ordered.

The basic group, subgroup, type and parameters of the manual generator are presented below.

WWW.TAVRIDA.EU


28

Table 19: Selection parameters for manual generators

Classifier GroupAbbrevia-

tionDescription

GROUP SGkitKit of manual generator

SUBGROUP ManGen

TYPE02-30 Manual generator kit for control module CM_16_1(60)

02-110 Manual generator kit for control module CM_16_1(220) and CM_16_2(220)Connector Kit of female connector for manual generator

Parameter description

Description

PARAMETER

0

(A)

Base Kit of manual generator 30W, 30VDC with male connector using with CM_16_1(60)

1Kit of manual generator 30W, 30VDC with connector (male&female) using with

CM_16_1(60)

2Kit of manual generator 30W, 30VDC with connector (male&female) using with

CM_16_1(60) in LV compartment

0Base Kit of manual generator 30W, 110VAC with male connector using with

CM_16_1(220)/CM_16_2(220)

1Kit of manual generator 30W, 110VAC with connector (male&female) using with

CM_16_1(220)/CM_16_2(220)

2Kit of manual generator 30W, 110VAC with connector (male&female) using with

CM_16_1(220)/CM_16_2(220)

1Kit of female connector for manual generator using with CM_16_1(60), CM_16_1(220)

or CM_16_2(220) in LV compartment

2Kit of female connector for manual generator using with CM_16_1(60), CM_16_1(220)

or CM_16_2(220)

4.3.1.1 List of manual generators, available for purchase

Table 20: List of manual generators, available for purchaseGeneral Parameters

GROUP SUBGROUP TYPESGkit ManGen 02-30 0SGkit ManGen 02-30 1SGkit ManGen 02-30 2SGkit ManGen 02-110 0SGkit ManGen 02-110 1SGkit ManGen 02-110 2SGkit ManGen Connector 1SGkit ManGen Connector 2

Example

SGkit_ManGen_02-110(2)Table 21: SGkit_ManGen_02-110(2) description

SGkitKit of manual generator

ManGen

02-110 Manual generator kit for control module CM_16_1(220) and CM_16_2(220)

2 Kit of manual generator 30W, 110VAC with connector (male&female) using with CM_16_1(220)/CM_16_2(220)

Figure 32: SGkit_ManGen_ 02-30(0) or SGkit_ManGen_

02-110(0) base kit with male connector only

Figure 33: SGkit_ManGen_ 02-30(1) or SGkit_ManGen_ 02-110(1) kit with male &

female connector

Figure 34: SGkit_ManGen_02-30(2) or SGkit_ManGen_02-110(2) kit with male & female connector using CM16

in LV compartment

WWW.TAVRIDA.EU

TECHNICAL MANUAL

29

4.3.1.2 Umbilical connector for manual generator

4.3.2 Manual close generator connection diagram with CM_16 - Emergency supply

Figure 37: Manual close generator connection diagram with CM_16 - Emergency supply

Additionally, the Umbilical connector for manual gene rator using with CM_16_1(60), CM_16_1(220) or CM_16_2(220) in draw-out unit with сircuit breaker in

removed position out of switchgear panel. Trip function button is available.

Figure 35, 36: CBUnit_Umbilical_ManGen(0) front and rear view

WWW.TAVRIDA.EU


30

5. TECHNICAL SPECIFICATION OF ISM5.1 ISM15_LD_1

Product group: ISM15Table 22: ISM15_LD_1, ISM15_LD_6

Subgroup Type

Parameter View

PCD dis-tance

Rated voltage

Breaking current

Rated current

LD 1 150mm 12kV 20kA 630A

Low duty three pole

VCB

210mm 1000A*

250mm

Product group: ISM15

Subgroup Type

Parameter View

PCD dis-tance

Rated voltage

Breaking current

Rated current

LD 6 133mm 12kV 20kA 630A

British retrofit only

Table 23: Technical specification of ISM15_LD_1, ISM15_LD_6

Rated voltage, kV 12

Rated current, A 630; 1000*

Rated power frequency test voltage, kV 42

Rated frequency, Hz 50/60

Rated impulse test voltage, kV peak 75

Partial discharge level at 1,1 x rated voltage kV, pC

<10

Rated short-circuit breaking current, kA 20

Rated short-circuit making current, kA peak 52

Short time withstand current, 4s, kA 20

Mechanical life, CO cycles, not less than 50,000

Interrupting life operations, not less than

at rated current 50,000

at breaking current 100

at other currents see Fig.38

Closing time, ms, not more than 30

Opening time, ms, not more than 15

Breaking time, ms, not more than 25

Main contact resistance, μOhm, not more than 40

Maximum ambient temperature, C° +55

Minimum ambient temperature, C° -40

Design class (according to IEC 60932) 1

Electrical endurance class at rated IEEE/IEC duty E2

Mechanical endurance class at rated IEEE/IEC duty

M2

Capacitive current switching class C2

"Mechanical vibration and shock withstand capability, IEC 60721, IEC 60068"

Class 4M4

Maximum altitude above sea level, m 3000**

Maximum humidity, non condensing 98 %

Weight, kg - LD_1 35


*with additional heat-sinks**for altitudes above 1000 m ratings should be cor-rected in accordance with IEC62271-1

Figure 38: Interrupting life for 20kA indoor switching modules

Breaking current, kA rms

Inte

rrup

ting

life

, ope

rati

ons

WWW.TAVRIDA.EU

TECHNICAL MANUAL

31

Table 25: Technical specification of ISM15_Shell_2

Rated voltage, kV 12/17,5

Rated current, A 630/ 1250/ 2000/ 2500



Rated impulse test voltage, kV peak 75/95

Partial discharge level at 1,1 rated voltage kV, pC

<10

Rated short-circuit breaking current, kA 20/25/31,5

Rated short-circuit making current, kA peak 52/64/83

Short time withstand current, 4s, kA 20/25/31,5





at other currents see Fig.39;40








Electrical endurance class at rated IEEE/IEC duty

E2


M2



Class 4M4


Maximum humidity, non condensing 98%

Weight, kg - ISM15_Shell_2(150_x_1250) 51



*150mm VCB is limited to 1250A rated current applica-tion**2000A with bottom down position, 1600A with bot-tom up position***for altitudes above 1000 m ratings should be cor-rected in accordance with IEC62271-1

5.2 ISM15_Shell_2

Product group: ISM15Table 24: ISM15_Shell_2

Subgroup Type

Parameter View

PCD distance

Rated voltage

Breaking current

Rated current

Shell 2 150mm* 12kV 20kA 630A

High duty three pole

VCB

210mm 17,5kV 25kA 1250A

275mm 31,5kA 2000A

2500A

25

10

100

1000

10000

100000


Inte

rrup

ting

life

, ope

rati

ons

Interrupting life for 25kA indoor switching modules

31.5

10

100

1000

10000

100000


Inte

rrup

ting

life

, op

erat

ions

Interrupting life for 31.5kA indoor switching modules


Figure 40: Interrupting life for 31.5kA indoor switching modules

WWW.TAVRIDA.EU


32

5.3 ISM25_LD_1

Product group: ISM25Table 26: ISM25_LD_1, ISM25_LD_3

Subgroup Type

Parameter View

PCD dis-tance

Rated voltage

Breaking current

Rated current

LD 1 210mm 24kV 16kA 800A

Low duty three pole VCB

275mm

Product group: ISM25

Subgroup Type

Parameter View

PCD dis-tance

Rated voltage

Breaking current

Rated current

LD 3 - 24kV 16kA 800A

Low duty single pole VCB

Table 27: Technical specification of ISM25_LD_1, ISM25_LD_3


Rated current, A 800




Partial discharge level at 1,1 rated voltage kV, pC <10


Rated short-circuit making current, kA peak 41.5














Electrical endurance class at rated IEEE/IEC duty E2


M2



Class 4M4

Maximum altitude above sea level, m 3000*

Maximum humidity, non condensing 98 %



*for altitudes above 1000 m ratings should be correc-ted in accordance with IEC62271-1

16

10

100

1000

10000

100000


Inte

rrup

ting

life

, op

erat

ions


WWW.TAVRIDA.EU

TECHNICAL MANUAL

33

Table 29: Technical specification of ISM25_Shell_1


Rated current, A 630/1250/1600*




Partial discharge level at 1,1 rated voltage kV, pC

<20


Rated short-circuit making current, kA peak 64










Main contact resistance, μOhm, not more than

17




Electrical endurance class at rated IEEE/IEC duty

E2


M2



Class 4M4


Maximum humidity, non condensing 98%

Weight, kg - ISM25_Shell_1(210) 50

Weight, kg - ISM25_Shell_1(275) 51

*1600A application project to be approved by TEE**for altitudes above 1000 m ratings should be cor-rected in accordance with IEC62271-1

5.4 ISM25_Shell_1

Product group: ISM25Table 28: ISM25_Shell_1

Subgroup Type

Parameter View

PCD distance

Rated voltage

Breaking current

Rated current

Shell 1 210mm 24kV 25kA 630A

High duty three pole

VCB

275mm 1250A

1600A

25

10

100

1000

10000

100000


Inte

rrup

ting

life

, ope

rati

ons


WWW.TAVRIDA.EU


34

6. OVERALL DIMENSIONS OF ISM

6.1 Overall dimensions of ISM LD

ISM15_LD1(250_12-20-630)

ISM15_LD1(250_12-20-1000)

ISM15_LD1(210_12-20-630)

ISM15_LD1(210_12-20-1000)

Figure 43: ISM15_LD1(250_12-20-630) or ISM15_LD1(250_12-20-1000) front and side view


WWW.TAVRIDA.EU

TECHNICAL MANUAL

35

ISM15_LD1(150_12-20-630)

ISM15_LD1(150_12-20-1000)


WWW.TAVRIDA.EU


36

ISM25_LD1(210_24-16-800)

ISM25_LD1(275_24-16-800)

Figure 46: ISM25_LD1(210_24-16-800) front and side view


WWW.TAVRIDA.EU

TECHNICAL MANUAL

37

ISM15_LD6(133_12-20-630)

ISM25_LD3(0_24-16-800)



WWW.TAVRIDA.EU


38

6.2 Overall dimensions of ISM Shell

Overall drawings of ISM15_Shell_2 low terminals

Table 30: ISM15_Shell_2 low terminals front, side and top view dimensions

Module type A L L1 L2

ISM15_Shell_2(150_L) 150 445 10 440

ISM15_Shell_2(210_L) 210 565 70 560

Figure 50: ISM15_Shell_2 low terminals front, side and top view

WWW.TAVRIDA.EU

TECHNICAL MANUAL

39

Overall drawings of ISM15_Shell_2 high terminals

Table 31: ISM15_Shell_2 high terminals front, side and top view dimensions

Module type A L L1 L2

ISM15_Shell_2(210_H) 210 565 70 560

ISM15_Shell_2(275_H) 275 695 135 690

Figure 51: ISM15_Shell_2 high terminals front, side and top view

WWW.TAVRIDA.EU


40

Overall drawings of ISM25_Shell_1

Table 32: ISM25_Shell_1 front, side and top view dimensions

Module type A L L2

ISM25_Shell_1(210) 210 565 560

ISM25_Shell_1(275) 275 695 690

Figure 52: ISM25_Shell_1 front, side and top view

WWW.TAVRIDA.EU

TECHNICAL MANUAL

41

Table 33: CM product range

Module type Rated supply voltage, V

CM_16_1(60) 24/48/60 DC

CM_16_1(220) 110/220 DC, 100/127/220 AC

CM_16_2(220) 110/220 DC, 100/127/220 AC

Figure 53: Appearance of СМ_16_1 Figure 54: Appearance of СМ_16_2

7. CONTROL MODULES (CM)

7.1 Product rangeControl modules are delivered in several models, which differ in their design, functionality and rated supply voltage.

The entire product range of CM_16 control modules se-ries is given in the following table:

СМ16_1 modules are designed for applications with AC or DC power supply and for all types of relay protection (without supply from current circuits).

СМ16_2 modules have current supply inputs and can be used in schemes with any type of supply.

WWW.TAVRIDA.EU


42

СМ_16_1 control module consists of:• power converter of 100…220V (AC, DC) or 24/60V DC operating power to supply charging voltage for closing and tripping capacitors;• high-power transistor Н-bridge for deriving close and trip current impulses into the actuator coil of the switching module;• microprocessor controller.

Control and signaling interface of the СМ_16_1 con-sists of:• three groups of galvanicly segregated relays with change-over contacts;• two isolated dry contact inputs;• LED indicator for the power supply – POWER;• LED indicator - READY;• LED indicator – FAILURE;• USB interface.

Figure 55: СМ_16 functional diagram

The СМ_16_2 control module in addition to above mentioned functionality contains two galvanicаly seg-regated current supply inputs for charging capacitors with the energy from the current transformers.

The functional diagram represented below is for the entire product range of CMs specifying designations of input (incoming arrows) and output (outgoing arrows) circuits.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

43

8. DESIGN OF CMControl modules are encapsulated into light weight metal housing and have 4 mounting points mounting provided.

Figure 56: Appearance of the СМ control module terminal connections and visual LED indicators

8.1 Designation of control module terminal connector contacts

Table 34: Designation of control module terminal connector contacts

Х1 Х2Connector No. Circuit Connector No. Circuit

1 Input Power_1 (+)~ 1 Current supply input_CТ_1.12 Input Power_2 (-)~ 2 Current supply input_CТ_1.23 Output relay Auxiliary switch_1 NO 3 Current supply input_CТ_2.14 Output relay Auxiliary switch _2 Com 4 Current supply input_CТ_2.25 Output relay Auxiliary switch_3 NC 6 Output relay READY_1 NO7 Output relay READY_2 Com8 Output relay READY_3 NC9 Output relay FAILURE_1 NO

10 Output relay FAILURE_2 Com11 Output relay FAILURE_3 NC12 Dry input CLOSE_113 Dry input CLOSE_214 Dry input TRIP_115 Dry input TRIP_2

X3 X4

1 Actuator coil output 1 1 USB-device connector2 Actuator coil output 2

1

2

3 4 5

678

Figure 57: Connection of conductor to WAGO connector

1. Earthing;2. X1 WAGO terminal connector for connecting power supply, dry contacts and signaling relays;3. X2 WAGO terminal connector for current supply input circuits (CM_16_2 only);

4. X3 WAGO terminal connector for connection with vacuum circuit breaker;5. USB-device connector;6. “Ready” LED indicator;7. “Failure” LED indicator;8. “POWER” LED indicator.

WAGO terminals are used as connectors. Conductors are securely fastened to the clamp type terminal using a special screw driver supplied with each module. WAGO connectors allow for fastening both single core and mul-ti stranded wires of 0.5 – 2.5 mm2 cross section.The length of stripped end shall be 6 – 10 mm.

WWW.TAVRIDA.EU


44

9.1. Operational modes

The operation of the CM together with VCB can be de-scribed in the following basic modes.

9.1.1 Open

The circuit breaker is open. The CM is ready to execute CLOSE command.

9.1.2. Closed

The circuit breaker is closed. The CM is ready to execute TRIP command.

9.1.3. Blocked Open

Blocking of the CLOSE command is activated under the following conditions:

1. A CLOSE command is applied while the CM is not ready then a CLOSE command becomes blocked. In order to close the circuit breaker, it is necessary to remove the CLOSE command and apply it again.

2. A CLOSE command will be blocked upon TRIP com-mand being activated. To close the circuit breaker it is necessary to remove both CLOSE and TRIP com-mands and to apply CLOSE command again.

3. The circuit breaker is mechanically blocked. In or-der to CLOSE circuit breaker it is necessary to de-block the circuit breaker (released position).

9.1.4. Blocked Closed

The TRIP command is blocked, when CM is not ready. To open the circuit breaker it is necessary to remove and to re-apply TRIP command.

ANTI-PUMPING DUTY

For any close and trip inputs the following rule is applicable:

During a close operation, if a trip instruction is received before the close instruction becomes passive then the close instruction will be blocked. For the next close operation the close in-struction must be re-applied after the trip instruction has become passive.

BLOCKING DUTY

For any close and trip inputs the following rule is applicable:

If a close instruction is received while a trip instruction remains active then the close instruc-tion is blocked. For the next close operation the close instruction must be re-applied after the trip instruction has become passive.

ATTENTION!

CLOSE OPERATION IS BLOCKED AFTER MECHANICAL TRIPPING OF THE CIRCUIT BREAKER. TO RELEASE THE BLOCKING, IT IS REQURED TO ISSUE A TRIP COMMAND TO THE TRIP INPUTS OR DISCONNECT THE POWER SUPPLY FOR 15 MIN UNTIL ALL LED INDICATORS ARE OFF.

9.2. Designation and operation of inputs

9.2.1. Dry CLOSE inputs

The “Dry Close” input is used to close the VCB. The close instruction is accepted through this input if the following conditions are met:• VCB is open (open mode);• Closing capacitor is charged;• No malfunction is detected;• “Dry Close” input is short circuited longer than “Close” instruction acceptance time;• “Dry Trip” input is open circuited.

NB! This is a voltage free contact.NB! No other active or passive electronic elements are allowed to connect into the circuit.

9.2.2 Dry TRIP inputs

The “Dry Contact “Trip” input is used to trip the VCB. The “Trip” instruction is accepted through this input if

the following conditions are met:• VCB is closed (closed mode) • Tripping capacitor is charged;• No malfunction is detected;• “Dry Trip” input is short circuited longer than “Trip” instruction acceptance time.

NB! This is a voltage free contact.NB! No other active or passive electronic elements are allowed to connect into the circuit.

9. OPERATION OF CM

WWW.TAVRIDA.EU

TECHNICAL MANUAL

45

9.2.3. Power inputs

The input is designed for connection of power sup-ply circuits. Power supply voltage range is specified in Clause “TECHNICAL SPECIFICATION”.

As an alternative supply source, a manual generator can be used.

9.2.4. Current power supply inputs

Current supply inputs are used for connection to the secondary circuits of current transformers, which pro-

vide energy to charge CM capacitors for tripping opera-tion. When CM is energized via Current power supply inputs, tripping of the circuit breaker must be executed by applying trip command to the Dry trip input.

NB! In order to simulate the operation of the series trip coils of a conventional direct tripping circuit breaker, please contact TEE prior to ordering CM.NB! IF other devices are included in the CT current supply circuit, CM_16_2 must be connected as the final device in series to guarantee other devices function. See Figure 58.

Figure 58: Connection of CM_16_2 with current supply inputs

9.2.5. USB input

The USB input is used within the routine tests at the manufacturer factory. The connection of other devices is not permitted.

9.3. Designation and operation of outputs

9.3.1. Actuator Coil output

The output is used for connection of the circuit breaker actuators coil.

9.3.2. Auxiliary switch contact output

The output is used to duplicate the signal of the main contact position of the circuit breaker.

The output is a relay with change-over contacts. The following signals are delivered:• circuit breaker is opened – relay contact is activated in NC condition;• circuit breaker is closed – relay contact is activated in NO condition;

If the auxiliary supply is lost, the relay does not change its status.

Table 35: Auxiliary switch contact output

VCB main contacts position Output “Auxiliary contacts”

Closed

Open

WWW.TAVRIDA.EU


46

Table 36: Ready output

CM State Output “Ready contacts”

Ready

Not Ready

9.3.4. Failure output

The Ready output signals the readiness of the СМ to ac-cept CLOSE or TRIP command. Readiness signalshall appear upon fulfillment of the following conditions:• closing capacitor is charged up to the required level;• failures are not detected;

The output is a change-over relay with NO contact. When activated upon fulfillment of the above men-tioned conditions, the NO contact changes over to NC.

9.3.3. Ready output

The output is used to signal internal faults (including circuit breaker actuator coil circuit), detected during self-diagnosis process.

The output is a change-over relay with NC contact when activated under the condition: failure detected. It changes over to NO when de-activated under no fail-ure condition detected.

Table 37: Failure output

CM State Output “Malfunction contacts”

No Malfunction

Malfunction

Note: The loss of the auxiliary supply is not considered as CM failure. Therefore no malfunction signal will be activated.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

47

9.4.1 Conditions for generating indication signals

Table 38: Conditions for generating indication signals

Indication Signaling Generating condition

POWER POWER LED indicator is lit upPresence of operating power supply voltage at the power supply input

FAILUREThe FAILURE LED indicator is blinking, the FAILURE relay contacts (X1:10; X1:11) are closed and (X1:10; X1:9) are opened.

Failure is detected (see table)

READYREADY LED indicator is lit up, the READY relay contacts (X1:7; X1:6) are closed and (X1:7; X1:8) are opened.

Control module is ready to accept closing command and perform closing operation. If Failure is detected, and FAILURE LED indica-tor is lit up (or blinking), the READY LED indicator shall not be lit up;

9.5 CM malfunction detection

The СМ control module provides LED light indication of operating conditions and modes.

The front panel of the СМ control module accommo-dates the POWER, FAILURE, READY LED indicators.

9.4 Indication

In case of any fault, the Failure LED indicator shall start blinking. Number of blinks corresponds to the cause of a fault and the blinks come in a sequence with a period of 0.6 s; series of blinks are repeated after 1.5 s pause.

An alarm shall be displayed until the following condi-tions are met:

• The cause of failure is rectified;• Subsequent self-check of the circuits has not re-vealed any malfunction;• Sequence of blinks corresponding to the cause of fault has been completed.

Return of the СМ to normal operation is possible upon rectification of normal operating conditions.

Table 39: CM malfunction detection

Number of blinks fol-lowed by 1,5s interval

Type of malfunction

1 Lasting (over 1.5 ± 0.5 s) outage of operating voltage or voltage exceeds the prescribed value limit

2 Circuit breaker failed to close or trip

3 Actuator coil is open circuited

4 Actuator coil is short circuited

5 Circuit breaker open and locked. Not for ISM LD series.

6 Overheating of CM

7 Unauthorized tripping.

Continious glowing Internal failure of CM

9.6. Troubleshooting procedure for CM and ISM

Table 40: Troubleshooting procedure for CM and ISM

Failure pat-tern

Number of blinks

Recommended troubleshooting procedure

CM light diode“Malfunction”

blinks

1 Check the auxiliary supply source, it’s wiring, connection, MCBs condition, value of the voltage supplied.

2 Check the connection and wiring integrity of the coil circuitry.



5 Release the circuit breaker from open and locked position.

6The maximum number of operations per hour exceeded. Stop close/open operations. Check ambient temperature.

7 Unauthorized tripping occurred, apply trip signal to reset the condition.

Contini-ous

glowingConsult with specialists of TAVRIDA ELECTRIC

WWW.TAVRIDA.EU


48

10. TECHNICAL SPECIFICATION OF CM

Table 41: Technical specification of CM

General

Standard operating duty cycle O – 0.3s – CO – 10s – CO

Maximum number of CO operations per hour 100

Maximum operating temperature (°C) +55

Minimum operating temperature (°C) -40

Maximum humidity 98 % non condensing

Maximum altitude above sea level (m) 2000

Degree of protection IP40 (excluding WAGO terminals)

Mechanical vibration withstand capability Class 4М4

Atmospheric environment capability in accordance with IEC 60068…2

96 h,+ 55°C96 h, - 40°C

Dielectrical strength

Power frequency withstand voltage, 1 min according to IEC 60255-5 (kV)

2

Lightning impulse 1.2/50 μs according to IEC 60255-5 (kV) 5

Insulation resistance at 1000 VDC, not less than (MOhm) 5

Signal detection time, no more than (ms) 12 or 4

Voltage/current upon closing of contacts, not less than (V/А) 30/0,05

Signalling outputs

Nominal switching voltage, V 240

Nominal switching current AC, А 16

Switching power AC, VА 4000

Switching current 250V DC, A 0,35

Switching current 125 V DC, A 0,45

Switching current 48 V DC, A 1,3

Switching current 24V DC, A 12

Switching time, s until 10 (depending on operation mode)

Control inputs

Signal detection time, no more than (ms) 12 or 4

Voltage/current upon closing of contacts, not less than (V/А) 30/0,05

Electromagnetic Compatibility (EMC)*

Surge immunity withstand voltage, not less common - 4 kV diff - 2kV

Burst immunity withstand voltage, not less power circuit - 7kV control circuit - 4kV

Voltage dips, short interruptions and voltage variations immunity, not less

CM_16_1(220); CM_16_2(220)Dips - 30%, Short interruption - 100%, 0.5s.Variation-20%, 2s.CM_16_1(60)Dips - 30%, Short interruption - 100%, 1s.Variation-20%, 10s.

Oscillatory waves immunity 1 MHz and 0.1MHz withstand, not lesscommon - 2.5 kVdiff - 1kV

Power Frequency Magnetic Field withstand intensity, not less1sec-1000A/m 1min-100 A/m

Pulse Magnetic Field Immunity (6.4/16 ms) withstand intensity , not less

1000 A/m

WWW.TAVRIDA.EU

TECHNICAL MANUAL

49

Damped Oscillatory Magnetic Field 1 MHz and 0.1MHz withstand intensity, not less

100 A/m

Electrostatic discharge withstand voltage, not less contact - 8kV air-15kV

Complex EM immunity withstand voltage, not lessMode A - 10kVMode B-10kVMode C - 3kV

Dimensions and weight

- СМ_16_1, kg 1.8

- СМ_16_2, kg 1.8

Overall dimensions, mm 165х165х45

Operating power supply voltage range

СM_16_1(60), VDC 19-72

СM_16_1(220), СM_16_2(220) VAC/DC 85-265

Power consumption from operating power supply source, no more than

During preparation for closing (close capacitor charging), (VA) 55

Stanby, (VA) 5

Preparation time for “Close” operation, not more than

After initial power application, (s)1510 s (CM-15)

After previous close operation, (s) 10

Preparation time for trip operation

After initial power application, (s) not more than 0.1

Time of ability to perform trip operation after power supply outage, not less than (s)

60

Current power supply inputs (only for CM_16_2(220))

Range of supply currents (А) 2...300

Time required for preparation for tripping operation (trip capacitor charging) at respective current supply, no more than (ms)

- 2 А, VA - 5 А, VA - 10 А, VA - 30 А, VA - 300 А, VA Allowed time for passage of current, not less than - 2 А, s - 5 А, s - 10 А, s - 30 А, s - 300 А, s * Subject to observance of installation procedure

1000 400 150 110 100 ∞ 100 10 1 0.1

EMC Directive 2006/95 Low Voltage Directive 2004/108

** upon special request

WWW.TAVRIDA.EU


50

Table 42: Incoming inspection

Inspection Conformity criteria

Package container (before unpacking) absence of severe damage resulting from:- product drop- excessive moisture in package- package deformation caused by external impacts- excessive external load applied to package conformance of label data with order data

Sealing presence of undamaged seals

Plastic parts absence of mechanical damage, scratches and/or colored spots

Metal parts absence of mechanical damage, scratches and/or corrosion on painted surfaces and galvanized terminals

11. APPLICATION GUIDEThe application of any module must be based on:• the required basic operating parameters.

Under no circumstances should service conditions ex-ceed the CB ratings stated in the Technical Specifica-tions;• the pole-to-pole distance appropriate for switchgear.

11.1 Incoming inspection

Each switching and control module shall be subjected to incoming control before installation. Incoming control includes visual inspection in accordance with the follo-wing table. If nonconformity appears, it is necessary to fulfill actions, described in “Troubleshooting procedure for CM and ISM”.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

51

11.2 Mounting of ISM

11.2.1 Mounting of ISM LD

In any switchgear application, the ISM LD may be in-stalled with the actuator/interrupter drive axis vertical or horizontal.Primary connections to the ISM shall be made using rigid busbars, the design of which shall avoid excessive static force being applied to the modules. Addition-ally, in draw out switchgear, support insulators shall be used to avoid transferring excessive contact forces to the ISM when operating the isolating mechanism.

When the ISM LD is used in a withdrawable switchgear application with Isc value reaching 20kA, an additional supporting bar must be used to interconnect all 3 poles.With stationary switchgear additional support insula-tors are generally not needed. However, fault current can produce electrodynamic forces in busbars.To avoid damage to the modules, the following limits for maxi-mum unsupported busbar length shall be applied to the design:LD 0.5 m

Figure 60: Mounting of the ISM LDin withdrawable switchgear

Figure 61: Fasteners size and torque moments

Figure 59: ISM LD fixing points

Mounting threads and specified tightening torques are shown below.

WWW.TAVRIDA.EU


52

CBkit_Heatsink_1(ITEA442611.01-03)

11.2.2 Additional insulation for ISM LD

For LD_1(150) 12kV and LD_1(210) 24kV additional in-sulation barriers between poles shall be used as shown in the figures below.

Figure 63: Recommended size and position of insulation barrier of LD_1(210) 24kV

Figure 64: Heatsink connection with ISM LD

Figure 65: Recommended design of the heatsink

Figure 66: Minimal air clearance distances between the contact terminals and the earthed switchgear enclosure

Figure 62: Recommended size and position of insulation barrier of LD_1(150) 12kV

11.2.3 Main terminal connections for ISM LD

To achieve the 1000 A nominal current rating, alumin-ium or copper heatsinks having a minimum surface 2 area of 260 000 mm must be attached close to both primary terminals of each pole.Recommended design of the heatsink is shown below.

Minimal acceptable distances between the contact ter-minal and the earthed switchgear enclosure are shown in the figures.

Table 43: Distances between the contact terminals and the earthed switchgear enclosure

Rated voltage, V Min. air clearance distance a, mm

12 kV >120 mm

24 kV >220 mm

WWW.TAVRIDA.EU

TECHNICAL MANUAL

53

11.2.4 Insulating hood mounting

ISM LD modules to be connected in accordance with the figure below.

Figure 67: Recommended cross-section of external busbars

WWW.TAVRIDA.EU


54

11.2.5 Mounting of ISM Shell

In any switchgear application, the ISM must be in-stalled with the actuator/interrupter drive axis verti-cal. The module can be installed with the actuator eit-her up or down. Each module has nine threaded holes 1 (M12, max torque is 40Nm) for obligatory module at-tachment in the module support insulators and eight threaded holes 2 (M8, max torque is 10Nm) for optional module attachment (see the figure below).

1. Obligatory module fixing points 2. Optional module fixing points 3. Vertical slots for busbars connection

11.2.6 Main terminals connection for ISM Shell

Busbar arrangement must be made either using flat busbars, or a copper tube with tulip contacts. The module has three vertical slots (3) (M16, max torque is 60Nm) for busbar mounting using mounting brackets. Each busbar must be attached to a terminal with two bolts. The copper tube must be attached to a terminal with one bolt. Module mounting and connection must be made with a torque wrench. Busbars must be proper-ly adjusted to the module terminals. It is not accept-able to tighten carelessly installed bars to terminals because it may cause excessive static force to be ap-plied to the modules.

1

2

3

Figure 68, 69: Threaded holes of ISM Shell for installation

WWW.TAVRIDA.EU

TECHNICAL MANUAL

55

Figure 71: Position indicator with cable link

5. Loosen the locknut 1 with the aid of S8 wrench.6. Rotate threaded tip of indicator link (S6 wrench) to

adjust position of visible colored fields in the indi-cator window.

7. Tighten the locknut untill it touches the boss on the indicator plastic frame. Tighten it for an additional half-turn.

Cable link of the position indicator shall be mounted in accordance with the description above. The bending radius of cable link shall be more than 40mm.

Figure 70

1. Close the module.2. Remove transparent end-cap 2 by unscrewing two

M4 screws 1 (Figure 70).3. Insert the indicator link with knob 3 into the slot of

the hinge 4 and insert the tip of the cable into the clip 5.

4. Insert the end-cap 2 in its original place with the help of two M4 screws 1 (torque value 2±0,2 N∙m).

11.2.7 ISM Shell indicator installation

WWW.TAVRIDA.EU


56

11.2.8 Main terminal connection for ISM Shell

To prevent destruction of the module caused by elec-trodynamic impact of short-circuit current, rectangular bars shall be fastened to the support insulators of the switchboard. Distance L1 between surface of contact terminal of the module and the nearest support insula-tor shall not be more than the one presented in Figure 72, 73, 74 for different values of short-circuit currents and various type of module.

To provide proper operation of the module when the rectangular bar is placed near the magnetic actuator that is inside the frame, please follow the recommen-dations listed in the Table 4 where L2 is the minimum distance between the frame of the switching module and the bar as shown in Figure 72, 73, 74.

L1 – maximum distance between the terminal and the nearest support insulator,L2 – minimum distance between the frame of the module and the rectangular bar.

Table 44: Main terminal connection to ISM Shell, maximum distances

Module

Short-circuit current, kA

51 64 80

L1, mm

ISM15_Shell_2(150_L) 700 450 300

ISM15/25_Shell_X(210_H) 980 630 420

ISM15/25_Shell_X(275_H) 1200 820 550

Module

Short-circuit current, kA

51 64 80

L2, mm

ISM15/25_Shell_X 120 150 190

Figure 72, 73, 74: Main terminal connection to ISM Shell

WWW.TAVRIDA.EU

TECHNICAL MANUAL

57

11.2.9 Additional insulation for ISM Shell

Additional insulation of terminals is obligatory for switching modules when air isolating distances bet-ween terminals and contacts arms or earthed metallic frame and the enclosure of the switchboard do not pro-vide dielectric strength required for high-voltage tests.

The total arrangement of additional insulation is shown in the figure on the right. Terminals are covered with insulating covers. Bare parts of contact arms, i.e. parts not covered with this insulation, shall be embed-ded into heat shrinkable tubes.

Any switchboard where the switching module is ex-pected to be used shall be designed to exceed minimal distances. Values for terminals covered with insulating covers and insulation tubes are bracketed.

Figure 75: Insulation covers and heat-shrinkable tubes mounted on the module

Figure 76: Insulation clearance limitations of ISM Shell with low upper terminal

Figure 77: Insulation clearance limitations of ISM Shell with high upper terminal

Heat shrinkable insulation

Table 45: Minimum clearances in air due to rated voltage

Rated voltage, kV Impulse test voltage (BIL), kVMinimum air clearances between phase to

earth, mm

12 75 120

17.5 95 170

24 125 220

Table 46: Minimum air clearances using insulation arrangements

A, mm (ISM Shell upper L terminal type)

12kV 17.5kV 24kV

70 120 170

Table 47: Minimum air clearances using insulation arrangements

B, mm (ISM Shell upper H terminal type)

12kV 17.5kV 24kV

117 167 217

WWW.TAVRIDA.EU


58

Figure 78: ISM15_Shell2 with installed upper and lower insulation covers

Table 48: Reference values for cross sections of earth connections (copper)

Fault current (1 s) Maximum tem-perature

Cross section of earth connection

16 kA 300 °C 55-95 mm2

20 kA 300 °C 70-120 mm2

25 kA 300 °C 95-140 mm2

31.5 kA 300 °C 120-190 mm2

Upper insulation covers

Heat shrinkable insulation of guide arms

Lower insulation covers

11.2.10 Earthing11.2.10.1 Earthing of switching modules

For personnel protection the metal housing of the ISM must be connected according to the applicable regula-tions, such as IEC 62271-1, IEC 62271-100, IEC 62271-200 via the marked earth screw of the ISM to the earthing arrangement of the particular panel. The earthing con-

nection can be carried out with cable or a flat copper bar.The area around the earth screw shall be cleaned before providing the earth connections. After the occurrence of a short circuit, the proper condition of the protective earthing must be checked.

Bolt M12x25

Figure 79: Earthing points

30 N*m

WWW.TAVRIDA.EU

TECHNICAL MANUAL

59

11.2.11 Auxiliary circuit termination

Auxiliary wires can run for termination from the left, from the right or from underneath the frame as shown:

WAGO-type terminals are used to connect auxiliary wires to the switching module. Wires are connected into the clamps using a special screwdriver, supplied with each module. WAGO terminals can accept either solid or multiple wires up to 2.5 mm2 cross-section. In-sulation stripping length shall be from 6 to 10mm.

Figure 80: Possible directions of auxiliary wires to run for termination.

Figure 81: Special screwdriver used for wiring

WWW.TAVRIDA.EU


60

11.3 Interlocking

11.3.1 Switchgear interlocking

Two basic types of interlocks are generally applicable: A mechanical interlock that:1. In non-withdrawable switchgear prevents operation of the primary isolators when the ISM is closed.2. In withdrawable switchgear prevents access to ope-ration of the truck isolating mechanism when the ISM is closed.

11.3.2 ISM LD interlocking interface

The mechanical interlock is connected to at least one of the interlocking pins or directly to the synchroni zing shaft.

An electrical interlock that:1. 1. In non-withdrawable switchgear prevents closing of the ISM when the isolator is in an intermediate posi-tion.2. 2. In withdrawable switchgear prevents closure of the ISM unless the truck is either fully engaged or with-drawn.

Figure 82: Interlocking interface of the ISM LD

WWW.TAVRIDA.EU

TECHNICAL MANUAL

61

11.3.3 Interlocking interface limitations

The following conditions must be fulfilled in carrying out mechanical interlocking:

If the interlocking mechanism is attached to one of the interlocking pins, the weight of the directly attached mov-able part to the interlocking pins shall not exceed 0,35 kg. If both interlocking pins are used, the sum of the attached masses shall not exceed 0,35 kg as shown in the figure 83.

If the attached part is joined to a lever mechanism, the weight (including directly moved parts) shall be dec-reased in proportion of the lever, fugure 84.

If the interlocking mechanism is directly attached to the synchronization shaft, the moment of inertia of the attached mechanism shall not exceed 4.3 x 10-4 kg/m2, figure 85.

If both stub shafts of the synchronizing shaft are used, the sum of the attached moments of inertia shall not exceed 4.3 x 10-4 kg/m2. It is not permissable to perform electrical trip/close commands while blocking the interlocking pins or the synchronization shaft mechanically.

11.3.4 Electrical Interlock

An electrical interlock must be provided by the con-nection of the NC contact of the position switch of the rele vant device (disconnector or draw out truck) in se-ries with the with CM16 CLOSE input as shown in the figure 86.

Note: Equivalent moment of inertia, ap-plied to all functions used for interlocking, manual tripping and position indication shall not exceed 4.3 x 10-4 kg/m2. (The distance between the axis of the interlock-ing pin and the axis of the synchronizing shaft is 35 mm. Equivalent moment of in-ertia of the mass M attached to the inter-locking pin is calculated as 0.0352 M).

m1+m

2=M<=0,35kg

Figure 83

Figure 84

J=M*L/2 < 4.3·10-4 kg·m2

Figure 85

Figure 87

Figure 86: Typical electrical interlocking diagram

F1 – Protection relayK3 – SCADASA1 – Local close switchMS – Microswitch

The position switch must be positively driven in both directions and must be fully operated before the inter-locked device starts to move to its alternative position.

11.3.5 Connection of the position indicator

A circuit breaker position indicator may be attached to one of the pins or to the interlocking levers.

11.3.6 Connection of manual trip facility

A manual trip facility (button, pedal, lever, etc.) may apply external force to one of the pins when the ISM is required to trip manually. When not in use, it must not apply any static force to the synchronizing shaft or pins, figure 87.The tripping force required can be as high as 250 N, therefore it may be necessary, to magnify the force with a lever system, rather than directly pushing the pin.

WWW.TAVRIDA.EU


62

11.3.7 ISM Shell interlocking

Both mechanical and electrical interlocks are based on interlocking shaft rotation (also see the Interloc king mechanism section). There is a slot on the visible sur-face of the shaft. If the slot is oriented vertically (i.e. along the axis of the middle pole of ISM) the modu-le is in the “Released” position. If the slot is oriented horizontally (i.e. along the line of auxiliary circuit con-

In contrast to the previous generation of TEL switching modules, there is no limitation for mo-ment of inertia of a load attached to the interloc-king shaft. The dead load on the interlocking shaft must not exceed a torque of M=1N*m in the direc-tion opposite to shaft rotation as the interlocking mechanism will not work properly.

When being rotated, the interlocking shaft acti-vates first the electrical interlock and then the mec hanical interlock.

Figure 89: The dimensioned drawing of the shaft interface

Figure 90: Recommended dimensions of a mating part which could be coupled to

the interlocking shaft

Figure 91: The interlocking shaft (1) with the mating part (2) and recom-mended mounting hardware (3, 4)

tacts) the module is in the “Open and Locked” position as presented below.

“Released” position allows operation of the ISM. “Open and Locked” position blocks the ISM mechanically and electrically.

For interlocking, an operator must turn a control handle attached to the interlocking shaft. When the module is “Closed” rotating the interlocking shaft leads to the manual tripping. The torque, which should be applied to the interlocking shaft for manu al tripping will not exceed 5N*m.

The maximum torque, applied to the interlocking shaft in any direction, must not exceed 20 N*m. Ex-cessive torque can cause damage to the module. To avoid this, an additional torque limiter must be used.

Figure 88: Interlocking shaft rotation from the “Released” to the “ Open and Locked” position

NOTE: When the ISM is Closed, the rotation of the interlocking shaft from “Released” to “Open and Locked” position will result in MANUAL TRIP

WWW.TAVRIDA.EU

TECHNICAL MANUAL

63

11.3.8 Cable link interlock (CLI)

CLI dramatically simplifies mechanical and electri-cal interlock arrangement inside any switchgear type. Flexible cable links of the CLI allow independent posi-tioning of the switching module and interlocking de-vices and makes the assembly process very easy. Inte-grated mec hanical devices and microswitches provide both mec hanical and electrical interlocking.

CLI units can be easily adapted to all types of switch-gear and provide various interlocks such as tool inser-tion prohibition for gear racking mechanism, isolator switch knob blocking, draw-out unit fixing mechanism interlocking and etc.

Figure 92: Same units of the Cable Link Interlock can be adapted to any type of switchgear interlocking

Figure 93: Isolator switch knob blocking Figure 94: Tool insertion prohibition for worm gear racking mechanism

WWW.TAVRIDA.EU


64

11.4 Mounting of control module

Figure 95: Installation of CM onto horizontal surface Figure 96: Installation onto vertical surface

Installation of СМ for applications in MV switchboard panels and retrofit solutions must be coordinated by “AS Tavrida Electric Export”.

Positioning of СМ control module is not limited. Con-trol module can be installed either onto horizontal or vertical surfaces.• If СМ is installed into closed space, especially in a place with heat emitting elements, air temperature in

such a place shall not exceed limited values.• It is recommended that the СМ control module be installed inside the relay compartment. However the installation of СМ control module onto a truck or cas-sette draw out unit without protective metal cover is allowed if power, control, signaling wiring and earthing connections are available.

In case of CM installation onto vertical surface, the holders Det_Holder_83 (4 pcs.) shown in the Figure 96, should be ordered additionally.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

65

11.4.1 CM Installation

1. Install control module on the front panel, inside the LV compartment of switchgear panel or onboard of draw-out unit.

2. CM should not be installed inside a high-voltage compartment.

Earthing of the cable shielding must be done as shown in the Figure 102. Use the metal cramp surrounding the entire cable shielding or connect the stranded shield-ing to the earth terminal.

Soldering an extension for shielding of the cable is prohibited.

Figure 97: CM installation on the front panel

Figure 98: CM installation inside LV compartment of switchgear panel

Figure 99: CM installation onboardof the draw-out unit

Figure 100, 101: Earthing points

Figure 102: Earthing of cable shielding

The common earth point at a welded stud

Connection to the main earth contour

WWW.TAVRIDA.EU


66

3. Control module must be earthed at a designated ter-minal using the shortest possible wire to the nearest earth terminal.

4. It is prohibited to place control cables together with high-voltage cables.

5. Always tie wires up together with cable ties. No wire loops are allowed.

6. Always separate cable routes with different assign-ments. Control cables must be routed separate from power wires. In case of power and control cable in-tersection, lay them perpendicularly as shown in the Figure 106.

7. When Earthing, always clean the paint and rust from metal surface.

Figure 103, 104: The shortest possible wire to the nearest earth terminal

Figure 105: Always separate cable routes with different assignments

Figure 106: Laying perpendicularly of con-trol cables with power cables

WWW.TAVRIDA.EU

TECHNICAL MANUAL

67

• CM control modules are to be used for operation only with Tavrida Electric vacuum circuit breakers.• Operating conditions of CM control modules stated in chapter 5 must not be violated.• Remote control circuits, which extend beyond distribution equipment and/or go in parallel with power

(high voltage) circuits at a distance of 1-2 m from them, shall not be connected directly to the dry inputs, but an intermediate relay must be used.

• Operation of CM control module via the dry inputs shall only be performed with the help of normally opened (dry) contacts. Use of additional devices and electrical elements (resistors, diodes, relay coils and etc.) for such a purpose shall be prohibited.

11.4.2 Recommendations for CM control module wiring connections1. Conductors (wire harness) of CM secondary circuits, including circuit breaker connection, shall be shielded (braided shield and/or armored cables).2. The length of secondary circuits inside high voltage compartment shall be minimal.

3. Secondary circuits shall be mounted without the for-mation of loops.4. The length of wire harness which connects CM and ISM/TEL shall not exceed 4 m.

• Each shielding of CM secondary circuits shall be grounded at the same point located close to control module. Cable connecting СМ and circuit breaker shall be grounded at both ends.• CM control module shall be connected to earth. Earthing of CM is done with the help of an earthing stud.

• Earthing points shall be carefully protected against paint, IEC 60364-5-54:2011.• If СМ is installed onto a draw out unit, it shall be grounded onto it. The length of earth conductor (from the platform to CM installation location) shall be mini-mal.

11.4.3 Earthing

WWW.TAVRIDA.EU


68

12. TYPICAL CONNECTION DIAGRAMS12.1 Typical CM connection diagram with ISM

G1 - Manual close generator

KT1 - Time relay

K1 - Miniature industrial relay

X1 - Terminal block

XG - Connector of manual close generator

S1 - Push button “Close”

S2 - Push button “Trip”

SQ1 - Electrical interlock

VCB - Vacuum circuit breaker

A1 - Control module CM_16

XPE - Earthing point of control module Figure 107: Typical CM - ISM connection diagram

WWW.TAVRIDA.EU

TECHNICAL MANUAL

69

12.2 Current supply connection diagram (application with CM_16_2(220))

In order to avoid incorrect operation of other devices, control module should be connected last in the current circuit.

Figure 108: Current supply connection diagram (application with CM_16_2(220))

WWW.TAVRIDA.EU


70

13. ROUTINE TESTS

Before delivery, each circuit breaker (ISM and CM) is subjected to the following routinе test procedure.

Table 49: Routine Tests

Test Conformity criteria

Design and visual checks

Compliance of the rating plate with the module type.Compliance of the module type with the order.Absence of mechanical damages, scratches or color variationsaffecting module appearance.

Mechanical operation tests(1000 CO operations at rated, minimum and

maximum operating voltage)

Proper operation of main and auxiliary contacts.Compliance of the closing and opening times with the requirementsof the technical specifications.Absence of contact bounce.

Measurement of resistance of the main circuit (for each pole). Compliance with the requirements of technical specification.

Power frequency voltage withstand test of the main circuits (phase to earth and across open contacts)

Absence of breakdowns during 1min after reaching specified testvoltage level.

Power frequency voltage withstand test of the auxiliary circuits (between any electrically insulated terminals and earth)

Absence of breakdowns during 1 min after voltage application.

Partial discharge measurement Compliance to the specified values

Before delivery, each control module is subjected to the following routine test procedure:

Table 50: Routine Test procedure

Test Conformity criteria

Design and visual checks

Compliance of the rating plate with the module typeCompliance of the module type with the orderAbsence of mechanical damages, scratches or color variations af-fecting module appearance

Power frequency voltage withstand testAbsence of breakdowns during 1min after reaching specified test voltage level

Parametrical test (reaction times, signal values standby and opera-tional)

Compliance with the specified values

Functionality test (inputs, outputs, leds) Compliance with the technical specification

Both switching and control modules are provided with Routine test certificate.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

71

14. COMMISSIONING TESTS

14.1 General

Commissioning and servicing is only permissible by qualified and trained personnel.

Insofar as installation where commissioning and change work is carried out on live equip-ment, the rele vant safety regulations must be adhered to (in accordance with appropriate

national standards). This requirement applies to both primary and secondary power circuits.When mounting and installing a panel design for the first time, an acceptance of the equipment must be car-ried out together with TAVRIDA ELECTRIC in order to ensure that the installation requirements are met. The ISM must always be tested and operated together with the CM. Individual testing is not possible and leads to the destruction of the ISM.

After installation of the switching and control modules, please follow the routine test procedure specified for relevant switchgear. This procedure shall cover (but shall not be necessary limited by) the following tests:

14.2 Operation test

1. Apply auxiliary power and check the CM signaling:LED indicator “Power” shall light immediately after power application;LED indicator “Ready” shall light within 15s after po-wer application;dry contact “Ready” shall switch on within 15s after power application;LED indicator “Malfunction” shall not light.

2. Insure proper operation of close and trip operations using all applicable inputs of the CM.

In the factory, the magnetic actuator coils are connected and tested according to the existing circuit diagram. If the actuator coil is connec-ted with reversed polarity it is possible that the

first few operations cannot be performed successfully. This is no failure of the ISM and after a few switching operations this possible effect disappears permanently (unless the polarity is changed again). Check proper signalling. Do not apply “Close” instruction when the CM is not ready for next operation (“Ready” LED indi-cator is off). The operation will be blocked for several seconds in this situation.

3. Check antipumping functionApply “Close” instruction permanently followed by ap-plication of “Trip” instruction.The module shall perform CO duty. This checking is nor-mally done using local control pushbuttons.

4. Check blocking function

Apply “Trip” instruction followed by application of “Close” instruction. The module shall stay open. This checking is normally done using local control push buttons.

5. Check proper operation of mechanical and electrical interlocks.

6. In the “Closed” position of the module, turn the in-terlocking shaft to 90° counter-clockwise Manual trip-ping of the module shall occur.

7. In the “Open and Locked” position of the module, ap-ply the “Close” instruction. The module shall stay open.LED indicator “Malfunction” of the CM shall light.

14.3 High voltage test

Apply a slowly rising AC voltage to each of the vacuum interrupters and support insulation. The voltage shall be increased up to the limit specified in the Techni-cal Specifications section and then kept steady for 1 min. During testing of vacuum interrupters, self-fading restrikes may appear. In this case, reduce the voltage slightly until the restrikes disappear (for 10-15 sec-onds) and then increase again until the required test level is achieved. Use single core short cables.Application of high voltage coaxial cables is strictly prohibited. If the length of the connecting cables can-not be reduced below 3 m, coordinate the surge impe-dance of the test set by connecting the circuit as shown in the figure below.

14.4 Auxiliary insulation resistance test

Use standard methods to check the insulation resis-tance of the auxiliary insulation. It shall not be less than the limits specified in an appropriate standard.

14.5 Main contact resistance test

Use standard methods to check resistance of the main contacts of the switching module. Values shall not exceed the limit specified in Technical Specifications section.

Figure 109: High voltage test of main circuits

WWW.TAVRIDA.EU


72

15. MAINTENANCE

ISM LD and ISM Shell modules are maintenance free. If maintenance of the switchgear, where the ISM and CM modules are installed, is carried out, the commission-ing tests should be repeated. The following commis-sioning tests shall be made:

15.1 Operation test

Modules shall be operable. Otherwise, check the con-trol circuitry. If necessary, change the failed module.

15.2 High voltage test

Use a dry cloth or a cloth soaked in alcohol to clean the insulation before testing. Dielectric strength of inter-rupters and support insulation may deteriorate in ser-vice. A reduction to 80% of initial value is acceptable; below this, the module must be replaced.

15.3 Auxiliary insulation resistance test

Clean the insulation before testing. The insulation resistance shall comply with appropriate standard re-quirements. In case of non-compliance, try to find the “weak point”. Note that generally there are other de-vices connected in parallel to the module.

15.4 Main contact resistance test

If the module has contact resistance which exceeds that specified in the Technical Specifications section but is less than twice this resistance , continuation of use is possible if actual continuous current does not exceed the following value:

where:

Ia, Ra - actual current and contact resistance respec-tively,

Ir, Rr - rated values.

If the contact resistance exceeds the specified limit by more than twice, the module must be replaced.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

73

16. MARKING

16.1 Marking of switching modules

Indoor switching modules are provided with an alumi-nium rating plate as follows (Figure 110, 111):

16.2 Marking of control modules

Figure 112: Marking of control modules

Each control module is packed into a cardboard box.

Figure 113: Marking of control module package

Figure 111

Serial number

Manufacturing date

Product name

Rated supply voltage

LED indicators description

Numbers and designation of WAGO terminal connectors

Product code and type of compatible circuit breaker

Trade mark and manufacturing company

Bar code

Product name

Product code and type of com-patible circuit breaker

Rated supply voltage

Serial number

Figure 110

WWW.TAVRIDA.EU


74

17. SEALING

17.1 Sealing of switching modules

Each switching module is sealed with a sealing label:

Figure 114: Sealing label of ISM

Any attempt to remove the label will result in the dis-play of a hidden “OPENED” signature.

Figure 115: Damaged sealing label of ISM

Manufacturer warranty does not cover switching modules with damaged or removed sealing labels.

Seal

17.2 Sealing of control modules

After the routine test procedure, each control unit is sealed with two special films (31x14.5 mm).

Figure 116: Sealing label of CM

These films are attached to a joint of the module’s case from two sides as per Figure 117.

Removing or damaging of seal films during the war-ranty period will cancel the warranty.

Figure 117: Sealing label fixing points on CM

WWW.TAVRIDA.EU

TECHNICAL MANUAL

75

18. PACKAGING

18.1 Packaging of switching modules

Each switching module is packed in a corrugated card-board box.

Handling symbols “THIS WAY UP”, “FRAGILE”, “EXTER-NAL LOAD LIMIT” and “KEEP AWAY FROM RAIN” are shown on the front sides of the boxes.

Top and bottom flaps are fixed and sealed by means of scotch tape. Boxes can be put on standard palettes and fixed by plastic tape. Not more than 2 levels for storage are permitted.

General information about packed switching modules (type and serial number of SM, order information) is given on adhesive labels attached to the package. Bar-codes are in 128C format.

Table 51: Dimensions of the boxes and weight data


mmGross weight, kg Net weight, kg

Cardboard box dimensions

(LxWxH), mm

ISM15 LD 1 150 36 34 645х290х550

ISM15 LD 1 210 38 36 645х290х550

ISM15 LD 1 250 39 37 725x290x550

ISM15 LD 6 133 58 55 470x410x500

ISM15 Shell 2 150 56 51 790x275x600

ISM15 Shell 2 210 56 52 790x275x600

ISM15 Shell 2 275 58 55 790x275x600

ISM25 LD 1 210 38 36 645х290х550

ISM25 LD 1 275 40 38 775х290x550

ISM25 LD 3 - 16 14 645х290х550

ISM25 Shell 1 210 60 56 790x275x600

ISM25 Shell 1 275 61 58 790x275x600

ISM25 Shell 1 150 60 55 790x275x600

Serial number

Order number

Gross weight

Indoor switching module type

Figure 121: Adhesive label attached to the package

Figure 120: Package symbols

Dimensions of the boxes and weight data are shown in the table below.

Figure 118, 119: Corrugated cardboard box of ISM

WWW.TAVRIDA.EU


76

Label

Figure 122: Adhesive label attached to the package

Figure 123: Approval mark

DEKRA mark approves that producer of modules has been audited and successfully passed audit in compli-ance with ISO 9001:2008

WWW.TAVRIDA.EU

TECHNICAL MANUAL

77

18.2 Packaging of control modules

Packaging case for CM_16 (220x190x60mm)

Product name, code, type of compatible circuit breaker, rated supply

Packaging adhesive label

Figure 125: Marking of packing label

Figure 124: corregated cardboard box of CM

Serial number

Product code

Handling symbols:-FRAGILE- KEEP AWAY FROM RAIN- MAXIMUM WEIGHT ABOVE THE PACKAGE

Maximum 25 kg weight can be put on the cardboard box. The following information shall be used during piling and warehousing.

Table 52: Cardboard box of CM weight and maximum number of pasteboard boxed at piling of CM

Control module's type

Gross weight, kg

Maximum number of pasteboard boxes at piling

of CM

CM_16_1(60) 1.8 13

CM_16_1(220) 1.8 13

CM_16_2(220) 1.8 13

Each control module is packed in a corregated card-board box. Joints of cardboard are sealed with Scotch

tape. Cardboard boxes are labeled with self-stick film as follows:

WWW.TAVRIDA.EU


78

19. STORAGE

Switching and control modules shall be stored in in-door dry areas.

Under no circumstances must TEL products be stored outdoors. This will lead to pro-duct damage and loss of warranty.

Ambient temperature shall not exceed –40°C +55°С limits. Average humidity measured over 1 year period shall not exceed 75 % at 50°C.

20. TRANSPORTATION

Transportation of switching and control modules shall be done in the standard package by any kind of trans-port or transport combinations. Transportation shall be provided in waterproof spaces. If airplanes are used, control modules shall be transported inside heated, pressurized compartments.

The following requirements shall be carried out during transportation:• handling in accordance with pictorial symbols;• piling of corrugated board boxes is allowed in 2 lay-ers. Boxes shall be surely fixed into the compartment;• elimination of drops from any heights;• elimination of any mechanical impacts which can cause damage of the package• The crates and boxes are to be stowed to ensure complete tightness. The crates and boxes should be hitched and lashed tightly so that it could not shift inside of a container under any conditions of carriage.

The modules shall be tied up with 16 mm polyester band twice. Top edges of the boxes shall be protected with plastic corners. The boxed can be additionally wrapped with stretch film.

21. DISPOSAL

Switching and control modules do not contain any materials that are hazardous to the environment or to personnel. No special methods of disposal are required.

22. WARRANTY

The expected lifetime of the circuit breaker ISM LD and ISM Shell is 30 years.

The warranty period of the VCB is 7 years from produc-tion date. In case of failure during the warranty pe-riod, manufacturer refunds all financial losses related to replacement/repair and transportation of the failed modu le, providing the conditions specified in this cir-cuit breaker Instruction Manual are met.

Under no circumstances is Tavrida Electric responsible for indirect losses, associated with the failure of any modules.

23. DELIVERY SET

ISM package includes:• WAGO screwdriver;• ISM Routine test certificate;• Vacuum circuit breakers ISM LD and ISM Shell type installation and operation manual;• Main contacts position indicator with flexible cable, length 1m. (ISM Shell only).

Control module includes:• WAGO screwdriver;• control module routine test certificate;• FS-DG_Det_Holder_84 - 1 set (control module hol-ders for installation onto horizontal surface).

WWW.TAVRIDA.EU

TECHNICAL MANUAL

79

24. AMENDMENT SHEET

Date Page Changes Reason

10.12.14 8 Presentation of control modules Renewal of control module products

10.12.14 11 New designations of the control module CM_16 Classifier update

10.12.14 9 New designations of the ISM LD, ISM Shell Classifier update

10.12.14 26 Manual closing generator description and applica-tion guide update

Renewal of control module products

10.12.14 30 ISM LD, ISM Shell technical parameters update Construction design update

10.12.14 38 ISM15_Shell_2 overall dimensions changes Construction design update

10.12.14 41 Control modules product range, design, operation, technical parameters update

Construction design update

10.12.14 68 Typical connection diagrams Renewal of control module products

10.12.14 75 Packaging of ISM and CM Construction design update

10.12.14 85 Mounting of surge arresters Construction design update

10.12.14 81 Arcing time minimization New clauses in manual as attachment

10.12.14 82 Fast transfer switch New clauses in manual as attachment

WWW.TAVRIDA.EU


80

25. TYPE TESTS

ISM circuit breakers are fully type-tested according to IEC 62271-100:• Dielectric tests• Partial discharge tests• Measurement of the resistance of the main circuit• Temperature-rise tests• Short-time withstand current and peak withstand current tests• Additional tests on auxiliary and control circuits• Mechanical operation tests at ambient temperature• Short-circuit current making and breaking tests

• EMC tests• Extended mechanical endurance tests, class M2• Low and high temperature tests• Short-line fault tests• Out-of-phase making and breaking tests• Electrical endurance tests, class E2• Single-phase tests• Double earth fault tests• Capacitive current switching tests, class C2

WWW.TAVRIDA.EU

TECHNICAL MANUAL

81

26. ATTACHMENTS26.1 Arcing time minimization

WWW.TAVRIDA.EU


82

Chemical and petro-chemical plants

Logistics and printing Metallurgy Pipelines Power plants

Automotive plantsSemiconductor manufacturing

PapermakingRefinery and oil

productionComputer controlled

production lines

An uninterruptable supply of power is crucial to Indus-trial and Petroleum companies that operate continuous production lines or processes. Outages of power supply, even momentary interruptions, can cause severe dam-age to production equipment and damage the products being processed. Apart from the disastrous financial risks, a power failure can also jeopardize an operator’s

life. Chemical and Petrochemical plants, Logistics and Printing companies, Metal works, Power and Desalina-tion plants, Oil Production and Transport companies and many others face daily challenges to secure perma-nent availability of electricity due to internal or exter-nal short-circuit faults or power cuts for maintenance of equipment.

26.2 Fast transfer switch

Why is the continuity of supply important

In order to ensure continuity of power supply, two in-dependent incoming feeders are usually provided to switch the load over to a healthy source when required. Conventional Transfer Systems based on an under-volt-

age protection have to be coordinated with protection relays of adjacent feeders and the reclosing relay of an upstream breaker. This results in a time delay of as long as several seconds.

Equipment or processes at risk

The ability to connect the load to a healthy power source within seconds will not retain the power supply intact. For instance, in the event of a power loss of only 50ms, there is a drop in voltage of 70% of the rated voltage, causing the magnetic contactors to trip. Con-

sequently, MV and LV motors come to a stop bringing the whole production line or process to a halt. Thus, the industry needs a much faster transfer system to elimi-nate the risk of power interruption.

EXAMPLE:

As a result of operations in 2009, ROSNEFT reported a loss of 198 tons of crude oil due to the use of Conventional Transfer Systems in the power supply of a hub consisting of 10 oil pumping stations. Taking into consideration today’s oil price the losses amounted to the sum of USD 164 391.

This example clearly demonstrates that a downtime is ex-pensive and also offers an opportunity for Fast Transfer Switch application as a project with a quick return on in-vestment.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

83

The table below summarizes the threats long transfer times can pose.

Sensitive equipment

Potential threats vs. Transfer times

Power loss

< 50ms 50ms - 1s > 1s

Medium voltage motors, pumps

Voltage dips cause MV motors to slow down due to the loss of power at the source supply. Motor protection should trip the line to reduce the risk of overheating and short circuiting of windings. Some time is required then to start up the motors, surmounting stresses of inrush currents. The IN-PHASE transfer to the healthy source in less than

50ms affects neither motor nor load characteristics, keeping the technological process running.

Aftereffects No impact Stressful restart Complete halt

Low voltage motorsNo direct threat to the motors, however due to their self-restart, the supply voltage drops to a critical level, which

results in control contactors tripping and consequent motor supply voltage loss.

Aftereffects No impact Stressful restart Complete halt

Magnetic contactorsThe voltage drop level is critically dependent on time. After 50ms of control voltage loss, the residual voltage level

becomes critically low, which makes the magnetic contactors trip.

Aftereffects No impact Complete halt Complete halt

Soft starters, frequency converters Device self-restart, loss of motor control. Protection trips the load after 1s of voltage loss.

Aftereffects No impact Protracted restart Complete halt

PLC, computer controlled systems Loss of control, protection stops the process.

Aftereffects No impact Protracted restart Complete halt

Protection devices, signaling and alarming

Loss of protection, signaling or alarming.

Aftereffects No impact No impactProtracted restart, Loss of commu-

nication

Fast Transfer Switch Tavrida Electric in cooperation with Schweitzer Engi-neering Laboratories (SEL)*, introduces its Fast Trans-fer Switch System based on the fast response time of

the SEL controller (7-10ms) and the ultimate charac-teristics of Tavrida circuit breakers.

WWW.TAVRIDA.EU


84

* SEL is a trademark of Schweitzer Engineering Laboratories

FTS sample oscillogram

Where:

S1 Circuit breaker 1;

S2 Circuit breaker 2;

P SEL 451 relay pick-up;

T1 14ms – tripping time of S2 circuit breaker includ-ing SEL relay pick up, control module reaction time;

T2 32ms – closing time of S1 circuit breaker includ-ing SEL relay pick up, control module reaction time;

D 22ms – dead-time.

In case of a fault in the main power source, the system switches over to a backup source within ~32ms (less than 2 cycles).

The reliable fault condition determination is pro-vided by the SEL 451 relay, which fully eliminates false triggerings.

Tavrida circuit breakers have the fastest characte-ristics (opening and closing times) on the market, thanks to their simple and reliable mechanism with linear movement of the drive and few moving parts.

The need for maintenance is completely eliminated since the breaker is maintenance free during its en-tire mechanical and electrical life.

In total, the operating time of the FTS is ~32ms (including the pick-up and operating time of the SEL relay, the operat-ing time of the CM control modules, and closing time of S2 VCB).

In this application the dead-time is equal to 22ms, which ensures no potential threat to either sensitive equipment or production process.

FTS Benefits

FTS provides a continuous and reliable power supply to eliminate costly downtimes and improves the plant load factor.

FTS ensures low investment costs and a quick return on in-vestment.

FTS reduces production equipment stress and fatigue pro-longing its service life and minimizing O&M costs.

FTS features local and SCADA control, event log and oscil-lography as well as advanced user software.

FTS is applicable for retrofit or brand-new installations.

FTS decreases the risk of environmental disasters.

WWW.TAVRIDA.EU

TECHNICAL MANUAL

85

It is strongly recommended that surge arresters be in-stalled in the cable compartment of metal-enclosed switchgear. Surge arresters must be connected with the shortest path to the common earth point of the cu-

bicle. The earthing wire of the surge arrester must be made of aluminum or copper insulated wire and have a cross section not less than 4mm2. Make sure that all contact surfaces are cleaned of corrosion and paint.

Figure 1: Surge arrester installation inside the cable compartment

Surge arresters

26.3 Mounting of surge arresters

WWW.TAVRIDA.EU


86

27. NOTES

This document is copyright and is intended for users and distributors of Tavrida Electric products. It contains information that is the intellectual property of Tavrida Electric and this document, or any part thereof, should not be copied or reproduced in any form without the prior permission of Tavrida ElectricTavrida Electric applies a policy of ongoing development and reserves the right to change products without notice. Tavrida Electric does not accept any responsibility for loss or damage incurred as a result of acting or refraining from action based on information in this Catalogue.

AS Tavrida Electric ExportE-mail: [email protected]

www.tavrida.eu

Tallinn Office14, Visase str.,11415 Tallinn, EstoniaTel.: +372 606 47 57Fax.: +372 606 47 59

Moscow Office3rd floor, 1A, Grizodubovoy str.,125252 Moscow, RussiaTel./Fax.: +7 499 530 22 05

Vilnius Office222, Ukmerges str.,07157 Vilnius, LithuaniaTel.: +372 688 50 680Fax.: +372 606 47 59E-mail: [email protected]

Muscat OfficeP.O. Box 1102, CPO-Seeb,P.C. 111, Mabellah Indl. Area,Sultanate of Oman Tel.: +968 9417 6184E-mail: [email protected]: www.tavrida.eu

ROMANIAEnergobit TAVRIDA47/11, Taietura Turcului str.,Industrial Park Tetarom I,400221 Cluj Napoca, RomaniaTel.: +40 264 308 854Fax.: +40 264 207 555E-mail:[email protected]: www.tavrida.ro

POLANDTAVRIDA ELECTRIC POLSKA sp. z o.o. ul. Graniczna 4443-100 TYCHYTel.: +48 (32) 3271986Fax.: +48 (32) 3271987E-mail: [email protected]: www.tavrida.pl

Tavrida Electric North and East Africa S.A.E25 Tayran Street (Mahmoud Shaltout),Building Number 476, Street Number 9, D area, Mokattam ,11571, Cairo,EgyptTel.: (+202) 25079317Fax: (+202) 25079319E-mail: [email protected]: www.tavrida.eu


This document is copyright and is intended for users and distributors of Tavrida Electric products. It contains information that is the intellectual property of Tavrida Electric and this document, or any part thereof, should not be copied or reproduced in any form without the prior permission of Tavrida ElectricTavrida Electric applies a policy of ongoing development and reserves the right to change products without notice. Tavrida Electric does not accept any responsibility for loss or damage incurred as a result of acting or refraining from action based on information in this Catalogue.

AS Tavrida Electric ExportE-mail: [email protected]

www.tavrida.eu

Tallinn Office14, Visase str.,11415 Tallinn, EstoniaTel.: +372 606 47 57Fax.: +372 606 47 59

Moscow Office3rd floor, 1A, Grizodubovoy str.,125252 Moscow, RussiaTel./Fax.: +7 499 530 22 05

Vilnius Office222, Ukmerges str.,07157 Vilnius, LithuaniaTel.: +372 688 50 680Fax.: +372 606 47 59E-mail: [email protected]

Muscat OfficeP.O. Box 1102, CPO-Seeb,P.C. 111, Mabellah Indl. Area,Sultanate of Oman Tel.: +968 9417 6184E-mail: [email protected]: www.tavrida.eu

ROMANIAEnergobit TAVRIDA47/11, Taietura Turcului str.,Industrial Park Tetarom I,400221 Cluj Napoca, RomaniaTel.: +40 264 308 854Fax.: +40 264 207 555E-mail:[email protected]: www.tavrida.ro

POLANDTAVRIDA ELECTRIC POLSKA sp. z o.o. ul. Graniczna 4443-100 TYCHYTel.: +48 (32) 3271986Fax.: +48 (32) 3271987E-mail: [email protected]: www.tavrida.pl

Tavrida Electric North and East Africa S.A.E25 Tayran Street (Mahmoud Shaltout),Building Number 476, Street Number 9, D area, Mokattam ,11571, Cairo,EgyptTel.: (+202) 25079317Fax: (+202) 25079319E-mail: [email protected]: www.tavrida.eu


technical manual - tavrida.com · 2.3.1 accessories supplied with ism ... cm control module vi...

Documents