LISAAir-insulated Switchgear Solutions for OEM Manufacturing12kV, …31.5kA, …2500A

1. Enclosure2. Low voltage compartment3. Circuit breaker compartment4. Shutter5. Vacuum circuit breaker6. Door lock7. Door handle8. Inspection window9. Cable compartment10. Earthing switch11. Current transformer12. Fixed contact insulator13. Busbar system14. Bushing15. Overpressure flap

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1. Enclosure2. Low voltage compartment3. Door lock4. Circuit breaker compartment5. Door handle6. Shutter7. Inspection window8. Vacuum circuit breaker9. Cable compartment10. Earthing switch11. Fixed contact insulator12. Current transformer13. Busbar system14. Bushing15. Overpressure flap

LIS�� is a family of air�insulated medium voltage switchgearIS�� is a family of air�insulated medium voltage switchgear

solutions for indoor installations.

It is designed for worldwide applications and high operating

safety.

Design

. Depending on the design all compartments are accessible from

the front. ��lternatively the cable compartment is accessible from

the rear. . Cable connection points at comfortable height of up to 900mm.. Pressure resistant inspection windows for cable and circuit

breaker compartments.. Typicals with top�entry for cables or bus bars available.. Created for straight forward manufacturing: No welding, truing,

grinding and cleansing procedures required.. Segregated busbars from panel to panel.. Optional arc venting shields or gas exhaust duct available.

Safety

. Fully type tested including internal arc tests according to

IEC 62271�200(I��C classified: ��FLR, 31.5k��/1s).. Mechanical interlocks and padlocks.. ��ll switching operations can be performed with the doors closed.. Metallic shutters automatically protect the high voltage parts

when the circuit breaker is withdrawn.

Characteristics

Switchboard manufacturers are facing the challenge of providing

their customers with high quality, fully type tested switchgear

solutions at reasonable costs. Design and testing state of the art

medium voltage switchgears becomes more and more expensive. To

assist switchboard manufactures Tavrida Electric has developed and

type tested a range of switchgear solutions.

The solutions are available in two different options:

Complete Solution

Completely factory�assembled and routine tested switchgear panel

(primary part):

Complete metal structure, doors, interlocks, bushings, fixed contact

insulators, support insulators, shutter mechanism, vacuum circuit

breaker, earthing switch (optional) and copper bars (optional).

��dditional required components:

Transformers, control components and wiring.

Technical License

Licenses providing the necessary information and authorisation to

manufacture and assemble in own factory:

Manufacturing drawings, bushings, fixed contact insulators,

support insulators, earthing switch, shutter mechanism, vacuum

circuit breaker, list of components to be ordered from third

parties.

Concept

LIS�� panels with arc venting duct

ISMD � withdrawable Vacuum Circuit Breaker from Tavrida Electric

Data with technical information

Enclosure

The enclosure is made of corrosive resistant hot dip galvani�ed steelhe enclosure is made of corrosive resistant hot dip galvani�ed steel

sheets. Its design allows fast assembly with bolts only. No welding,

truing, grinding or cleansing is necessary. No jigs are required for

assembly.

Each panel is equipped with sidewalls. The special design provides

an 8mm air gap between two neighbouring panels. In the unlikely

event of an internal arc, this design assures that the damage is

limited to the panel where the fault occured.

Doors

The coated doors are made from galvani�ed sheet steel. Robusthe coated doors are made from galvani�ed sheet steel. Robust

hinges and handles provide for convenient and safe closing. The

closing mechanisms are available for left or right hand operation.

Rounded edges guarantee safe handling

Properly designed labyrinths as

well as additional steel sheets

provide maximum operator

safety in case of internal arc

fault

Housing

Each panel consists of three power compartments:ach panel consists of three power compartments:. busbar compartment (1). cable compartment (2). circuit breaker compartment (3). the instrument compartment (4).

Busbar compartment

The busbar compartment houses the main busbar system connectedhe busbar compartment houses the main busbar system connected

to the fixed upper isolating contacts of the circuit breaker by means

of branch connections. The main busbars are made of electrolytic

copper. The busbar compartment of each panel is segregated from

the busbar compartments of the neighbouring panels.

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Compartments

LIS�� � F��3 (Front access)

Cable compartment

The cable compartment houses the connection of the power cableshe cable compartment houses the connection of the power cables

to the busbar. ��dditionally the earthing switch, surge arresters,

voltage and current transformers can be installed. The compartment

is closed with a metallic bottom plate.

Circuit breaker compartment

The circuit breaker compartment houses the bushing insulatorshe circuit breaker compartment houses the bushing insulators

containing fixed contacts for the connection of the circuit breaker with

the busbar and the cable compartment. The bushings are single�pole

type and are made of cast resin. They are covered by metallic shutters.

The metallic shutters operate automatically during movement of the

circuit breaker from the racked�out position to the service position

and vice versa.

The position of the circuit breaker can be seen from the front of the

panel through an inspection window.

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LIS�� � R��4 (Rear access)

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Make�proof earthing switch

Equipment

Earthing switch

Each feeder compartment can be equipped with an earthing switchach feeder compartment can be equipped with an earthing switch

for cable earthing.

When installed in measurement, bus�tie or bus riser panels it can

also be used to earth the busbar system.

The earthing switch has short circuit making capacity. The position

of the earthing switch can be seen by means of mechanical position

indication and in addition through an inspection window.

Interlocks

The switchgear is fitted with all interlocks needed to guarantee thehe switchgear is fitted with all interlocks needed to guarantee the

highest level of safety for operators. ��ccording to IEC 62271�200

the interlocking devices prevent

. closing of the circuit breaker in an intermediate position

. racking�out of the circuit breaker in closed position

. racking�in of the circuit breaker in closed position

. opening of the circuit breaker compartment door as long as the

circuit breaker is not in test position.

Interlock for circuit breaker compartment door

In addition if the panel is equipped with an earthing switch the

interlocking devices prevent

. racking�in of the circuit breaker with the earthing switch closed

. closing of the earthing switch when the circuit breaker is in

connected or intermediate position. opening of the cable compartment door with the earthing switch

open

Padlocks

Each door can be locked in its closed position by means of padlocks.ach door can be locked in its closed position by means of padlocks.

The operations for circuit breaker racking�in/out and earthing switch

opening/closing can be prevented by applying the padlocks to the

corresponding insertion slots.

The metallic shutters can be locked by means of two independent

padlocks in both the open and closed positions.

Swinghandle locks on the doors provide additional safety

Interlock for cable compartment door

Vacuum circuit breaker

LIS�� switchgear solutions are equipped with Tavrida Electric�sIS�� switchgear solutions are equipped with Tavrida Electric�s

advanced vacuum circuit breaker ISM. Tavrida Electric has

simplified the mechanical structure of the circuit breaker to the

greatest possible degree. It uses three single�coil magnetic

actuators, one per pole. ��ll switching elements are assembled along

a single axis. ��ll mechanical movements are therefore direct and

linear. The three actuators are mounted in a steel frame and are

mechanically linked by a synchroni�ing shaft.

Completely avoided is failure of critical components such as

. mechanical latching

. gears, chains, bearings and levers

. tripping and closing coils

. motors to charge springs

The result is up to 150,000 C�O cycles at rated current or up to 100

operations at full short circuit breaking current without the need

to replace or adjust any parts. Tavrida Electric´s vacuum circuit

breakers are maintenance free over the total life expectancy of

at least 25 years.

Low duty circuit breaker

High duty circuit breaker

Instrument transformers

The panel is designed to be equipped with current transformers forhe panel is designed to be equipped with current transformers for

measurement an protective purposes, toroidal current transformers

and voltage transformers according to the dimensions of DIN 42600.

For other transformers the panel can be adapted on request.

Power cables

Up to a maximum of 6 cables per phasep to a maximum of 6 cables per phase can be used depending

on the unit dimensions and the cable cross�section. ��ccess to the

cables is provided either from the front or from the rear. The

cables enter the panel from the bottom. Optional top entry design

is available.

Surge arresters

In the cable compartment space is provided for three fix mountedn the cable compartment space is provided for three fix mounted

surge arresters to protect the equipment from switching overvoltages.

Surge ��rresters from Tavrida Electric

Indoor support type current transformer and voltage transformer

Connected power cable to the feeder busbar

Availability and partition

LIS�� switchgears are designed in compliance to availability classes

LSC2B and partition class PM according to IEC 62271�200.

The switchgear compartments do not need any tools for opening.he switchgear compartments do not need any tools for opening.

Interlocks allow access only when the corresponding high voltage

parts are dead and earthed. Metallic shutters and partitions

segregate the compartments from each other. When a compartment

is opened all other panels in the installation and all cable

termination compartments (including that in the panel concerned)

remain in operation.

Type tests

LIS�� switchgear solutions are all fully type tested according toIS�� switchgear solutions are all fully type tested according to

IEC 62271�200:

· Short time and peak withstand current

· Temperature rise and main circuit impedance

· Dielectric test on main and auxiliary circuits

· Making and breaking capacity of the circuit breaker within the

panel

· Earthing switch making capacity

· Mechanical operations

· Internal arc fault (I��C classified: ��FLR, 31.5��/1s)

Internal arc fault test, 31.5k��/1s

Type test reports

* For installations at altitudes higher than 1000 m, the insulation withstand level of external insulation

at the service location has to be determined by multiplying the rated insulation levels by a factor Ka in

accordance to IEC 62271�1.

Rated voltage (Ur) 12kV

Rated power frequency withstand voltage (Ud) 28kV (42kV on request)

Rated lightning impulse withstand voltage (peak) (Up) 75kV (95kV on request)

Rated short�circuit breaking current (Isc) to 31.5k��

Rated peak withstand current (Ip) to 82k��

Rated short�time withstand current (Ik) to 31.5k��

Rated duration of short circuit current (tk) 4s

Internal arc withstand current, 1s 31.5k��

Rated frequency 50/60H�

Rated busbar current 2500��

Rated feeder current 630��, 1250��, 1600��, 2000��

Standards IEC 62271�200

Degree of protection (RC 630��, 1250��) IP4X

Degree of protection (RC 1600��, 2000��) IP3X

Temperature range �25…+40

Maximum relative humidity 95%

Maximum altitude 1000m a.s.l.*

Rated data

Standard

��ccessories

��lternative Solutions

IF IF top entry BT BR M DIF

IF : Incoming/outgoing feederBT : Bus�tieBR : Bus�riserM : MeasurementDIF : Direct incoming/outgoing feederIF top entry : Top entry incoming feeder

Typical units

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

Tavrida Electric applies a policy of ongoing development and reserves the right to change product 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 Product Guide.

LISA

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2009

South AfricaTavrida Electric ��frica (Pty) Ltd.Cnr.Van Dyk and Commissioner StreetsBoksburg East, Gauteng, Republic of South ��fricaPhone: + 27 11 9142199Fax: + 27 11 9180584E�Mail: info@tavrida.co.�aWeb: www.tavrida.co.�a

ChinaTavrida Electric (Beijing) Co., Ltd.First Floor West, Building 11, No. 28 Yuhua Road, ��rea B, Beijing ��irport Industrial Zone, 101300 Beijing, ChinaPhone: +86 (10) 8049 2474/5474Fax: +86 (10) 8049 7114E�Mail: info@tavrida.cnWeb: www.tavrida.cn

GermanyTavrida Electric ��GWetterkreu� 3, 91058 ErlangenGermanyPhone: + 49 (0) 9131 972079�0Fax: + 49 (0) 9131 972079�9E�Mail: info@tavrida.deWeb: www.tavrida.de

SwitzerlandTavrida Electric ��GRheinweg 7, 8200 SchaffhausenSwit�erlandPhone: + 41 (0) 52 625 0315Fax: + 41 (0) 52 625 2035E�Mail: info@tavrida.chWeb: www.tavrida.ch

IndiaTavrida Electric India Private Limited15 NC, Block���, New ��liporeKolkata � 700 053, West Bengal, IndiaPhone: +91 33 2488 1715/3260 8634Fax: +91 33 2488 1766E�Mail: info@tavrida.inWeb: www.tavrida.in

AustraliaTavrida Electric ��ustralia Pty Ltd.Unit 26, 59�61 Frankston Gardens Dr.Carrum Downs Victoria 3201��ustraliaPhone: +61 3 97708918Fax: +61 3 90119681E�Mail: info@tavrida.com.auWeb: www.tavrida.com.au