ks z series substations - abb... z series substations transformer substations in concrete enclosures...

630 kVA630 kVA

800 kVA800 kVA

1000 kVA1000 kVA

KS... z series substations

Transformer substations in concreteenclosures operated from the outside

ABB

3

Table of contents

1. Subject of the paper ...................................................................................................................... 4 2. Application of the substation........................................................................................................ 4 3. Technical specifications ............................................................................................................... 4

3.1. Substation building .................................................................................................................. 5 3.1.1. KS 19-28 z substation building specifications: ............................................................... 6 3.1.2. KS 22-30 z substation building specifications: ............................................................... 6 3.1.3. KS 25-36 z substation building specifications: ............................................................... 7 3.1.4. Building supplementary data: ........................................................................................... 7

3.2. Equipment arrangement........................................................................................................... 8 3.3. Substation technical specifications .......................................................................................... 8

3.3.1. Standards: ......................................................................................................................... 9 3.4. Medium-voltage switchgears .................................................................................................. 9 3.5. Low-voltage switchboard ........................................................................................................ 9 3.6. Transformers.......................................................................................................................... 10 3.7. Medium-voltage and low-voltage cable connections ............................................................ 10 3.8. Substation earthing ................................................................................................................ 10

4. Substation assembly and foundation .......................................................................................... 11 4.1. Substation foundation trench and installation of the substation ............................................ 11

5. Environmental protection ........................................................................................................... 11 6. Warranty ..................................................................................................................................... 12 7. Documentation acceptance ......................................................................................................... 12 8. Ordering a substation.................................................................................................................. 12 9. Substation transportation and hand-over .................................................................................... 12 10. Single-transformer substations (fig. 08.1 and 08.2) ............................ 27-28 11. Substation with medium-voltage side measurement (fig. 09.1 and 09.2) .............................29-30 12. Two-transformer substations (fig. 10.1 and 10.2) ...............................31-32

List of figures Fig. 01. Exterior styles Fig. 02. Equipment placement Fig. 03. Equipment placement Fig. 04. Transformer installation Fig. 05. Cable bushings Fig. 06. KS...z joinery

4

1. Subject of the paper The subject of the paper is transformer substations operated from the outside, housed in reinforced concrete enclosures: • KS 19-28 z substation ....................... with transformer of up to 630 kVA • KS 22-30 z substation ....................... with transformer of up to 630 kVA • KS 25-36 z substation ....................... with transformer of up to 1000 kVA • KS 25-36 z substation (special version) .......................... with transformer of up to 1250 kVA • two-transformer substations The substation is made as a complete, self-contained power device. It comprises a transformer, medium-voltage switchgear and low-voltage switchboard, a measurement circuit on the medium-voltage or low-voltage sides, cables and associated equipment; it’s a ready-to-use product to be placed directly in the desired location.

number of substation buildingstype of KS in the set-up

KS Compact transformer substation

substation building dimensions (dm)

z – operated from the outside

KS - zsubstation designation

2. Application of the substation The KS...z type transformer substations are designed for providing electrical power supply to public and industrial customers from medium-voltage networks of up 20 kV, and low-voltage networks of 400/230 V in TN-C systems.

3. Technical specifications The substation, depending on the building type, is designed for the following equipment: Building KS 19-28 z (→ page 13) medium-voltage switchgear: ..................... with SF6 insulation - SafeRing or SafePlus • up to 4 bays low-voltage RNTw type switchboard....... 1250 A transformer .............................................. up to 630 kVA

5

Building KS 22-30 z (→ page 14)

medium-voltage switchgear: ..................... with SF6 insulation - SafeRing or SafePlus • up to 5 bays

low-voltage RNTw type switchboard...... 1250 A transformer................................................ up to 630 kVA

Building KS 25-36 z (→ page 15, 16)

medium-voltage switchgear: ..................... with SF6 insulation - SafeRing or SafePlus • up to 5 bays

low-voltage RNTw type switchboard........ 1250 A (1600 A) transformer.................................................. up to 1000 kVA

3.1. Substation building The KS...z substation buildings are made of concrete using permanent moulds (walls and base are made of B35 type concrete, roof is made of B45 type concrete – walls are 10 cm thick).

The supporting constructions as well as fixing and transporting fittings are metallically joined with building reinforcement. All metal components of the building are hot-zinc-coated. Substation doors and ventilation grates are made of aluminium sheets and sections (or tinned steel), and painted with polyester powder paints (→ fig. 06). Ventilation doors are standard equipped with insect screens. The door frame of the transformer room is equipped with protection railing hooks (for the upper voltage – connector transformer type), and with hooks for safety nets (for the transformers with traditional ceramic insulators). The building roof is made of B45 type concrete (→ page 18), and is fitted with threaded transportation sockets (with PVC plugs – the plugs and lifting slings for roof removal are delivered with the substation as standard). The building contain medium-voltage, low-voltage, and transformer compartments.

Die-cast concrete building (deformations and cracking of the building in the construction, transportation and operation processes

are eliminated)

Substation concrete components: building, base and roof

Equipment can be installed inside the substation after removal of the roof. The transport fittings are approved for permissible loads.

6

The medium-voltage switchgear and low-voltage switchboards are accessed after opening service doors, separate for the medium- and low-voltage sections. The transformer is accessed after opening the transformer room ventilation door. The medium-voltage and low-voltage cables are passed into the building base through type P50 (P70) (→ fig. 05) cable bushings or HD cable bushings. The KS 19-28 z contains 9 type P50 (p70) cable bushings as standard – for the dry medium-voltage cables, and the low-voltage cables are run directly from the ground. In the KS 22-30 z buildings and KS 25-36 z buildings, the medium-voltage cables, and the low-voltage cables are run through the P70 cable bushings. The substation building internal walls and roof are painted with white waterproof acrylic paints; the walls, base floor and substation building floor are multi-layer painted with sealing paints. The external walls structural plaster finish and the roof are painted with sealing paints according to the RAL colour palette. The base trim and the roof are painted – from the outside – with sealing paints in the substation door colour. The standard substation external finish is shown in fig. 01.

3.1.1. KS 19-28 z substation building specifications (→ page 13):

width: substation building .......................................................................... 1900 mm substation roof ................................................................................ 2050 mm

length: substation building.......................................................................... 2800 mm substation roof................................................................................ 2950 mm

height above the ground............................................................................. 1740 mm base foundation depth................................................................................. 650 mm total building height................................................................................... 2390 mm substation building weight (without equipment)............................................ 6500 kg equipped substation weight (without transformer) ....................................... 7500 kg substation weight with the transformer (up to 630 kVA) ............................. 9500 kg building area............................................................................................... 5.35 m2

3.1.2. KS 22-30 z substation building specifications (→ page 14):

external width at base ............................................................................... 3000 mm at roof .............................................................................. 3150 mm external length at base ................................................................................ 2200 mm at roof ............................................................................... 2350 mm

The buildings can be set-up in groups (if e.g. two-transformer substations are required → page 17)

7

height above the ground............................................................................ 1800 mm base foundation depth...................................................................................... 700 mm total height................................................................................................. 3320 mm substation building weight......................................................................... 8000 kg equipped substation weight (without transformer)............................................. 9500 kg substation weight with the transformer (up to 1000 kVA) ............................ 12300 kg building area................................................................................................ 6.6 m2

3.1.3. KS 25-36 z substation building specifications (→ pages 15,16):

width: substation building........................................................................ 3600 mm substation roof.............................................................................. 3750 mm

length: substation building........................................................................ 2500 mm substation roof.............................................................................. 2650 mm

height above the ground........................................................................... 1800 mm base foundation depth (including surface) .................................................. 700 mm total building height................................................................................. 3320 mm substation building weight....................................................................... 10500 kg equipped substation weight (without transformer)............................................ 12000 kg substation weight with the transformer (up to 1000 kVA) .......................... 14800 kg building area............................................................................................. 9 m2

3.1.4 Building supplementary data:

protection degree .............................................................................. IP 43 enclosure impact strength........................................................................ 20 J roof load strength ............................................................................ 2500 N/m2

enclosure class .............................................................................. 10 fire resistance........................................................................................... B fire resistance of walls and ceilings........................................................ 120 min substation fire load (depending on the amount of oil in the transformer housing

and size of the substation building) e.g.:

19-28 z substation with 630 kVA transformer.......................................... 3660 MJ/ m2



the minimum distance from other objects (depending on the type 10 to 15 m *) of the neighbouring buildings)

* distances can be reduced: by 50% if the neighbouring building wall has a 60 min fire resistance, and there is only one door of at least 30 min fire resistance; by further 25% if the neighbouring building is equipped with fixed, automatic fire extinguishing system.

8

The transformer substation can be located adjacent to a building, with a solid wall (no openings) towards the building, if the distance to the window and door openings is more than 1.1 m, and the horizontal and vertical distances from rooms with permanent presence of people is higher than 2.8 m.

3.2. Equipment arrangement The devices installed inside the building are operated from the outside. The medium-voltage switchgears and low-voltage switchboards are located in the medium-voltage and low-voltage compartments on two opposite sides of the building, divided by the transformer room. The switchgears and switchboards are accessed after opening service doors, and the transformer room is accessed through the ventilation door (→ figs 02 and 03).

3.3. Substation technical specifications The KS...z series transformer substations are type-tested at the Electrical Power Institute in Warsaw.

• transformer substation type: KS 19-28 z (up to 630 kVA) certificate no.550 • transformer substation type: KS 22-30 z (up to 630 kVA) certificate no.569 • transformer substation type: KS 25-36 z (up to 630 kVA) certificate no.569

attestation no. 021/2002 • transformer substation type: KS 25-36 z (1000 kVA) certificate no.596

Scope of substation testing:

• general requirements regarding construction and functionality, • mechanical strength of the building against impacts and loads, • protection degree, heat increase inside the station building, • electric strength of insulation, • fault current load, main circuit and earthing connections • inspection and evaluation of internal arc fault effects.

General substation data:

substation rated power ....................................................... 630 kVA (1000 kVA) rated frequency ....................................................... 50 Hz number of phases ...................................................................... 3

Medium-voltage side data:

rated voltage .................................................................. 17.5kV or 24 kV

The concrete moulding production process allows for individual location of doors, division walls (or their removal), and special equipment holes.

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insulation rated level ....................................................... 125 kV / 50 kV busbar rated continuous current ................................ 630 A (400 A) line bay .......................................................... 630 A (400 A) transformer bay .......................................................... 200 A peak withstanded rated current: busbar ................................................................... 31.5 kA line bay and earthing switch ........................................... 31.5 kA short-term withstanded rated current: busbar ................................................................... 12.5 kA line bay and earthing switch ........................................... 12.5 kA rated fault duration ..................................................................... 1 sec.

Low-voltage side data:

rated voltage ............................................................................... 400 V insulation rated level ................................................................... 660 V busbar rated continuous current ............................................ 990 A (1440 A)

main switch disconnector (circuit breaker) .................................. 1250 A (1600 A) feeder bay ................................................................................ 400 A (630 A)

peak withstanded rated current ............................................ 40 kA short-term withstanded rated current ................................ 16 kA rated fault duration ................................................................... 0.5 sec

Transformer data:

transformer type .................................................................. sealed, oil cooled (or dry, resin type)

transformer power ................................................................... up to 630 kVA (1000 kVA) upper-voltage connection .......................................................... connector-type

(or insulators with terminal lug)

3.3.1. Standards:

EN 61330 : Prefabricated transformer high-voltage/low-voltage stations EN 60298 : 2000 – AC switchgears in metal enclosures for voltages above 1 kV. IEC 439-1+AC : 1994 – Low-voltage switchgear and controlgear. Requirements for fully and partially tested sets. IEC 1641 : 1996 – Technical Report. Enclosed low-voltage switchgear and controlgear assemblies. Guide for testing under conditions of arcing due to internal fault. IEC 529 (1989) – Protection provided by enclosures (IP code).

3.4. Medium-voltage switchgears (→ page 19, and the ‘SafeRing and SafePlus’ catalogue)

3.5. Low-voltage switchboard (→ pages 20-22)

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3.6. Transformers (→ page 23, and the: ‘Distribution transformers’ catalogue)

The transformer inside the substation building is standing on shock absorbing cushions, and fixed to the hooks provided in the building’s transformer room. (→ fig. 04). The transformer is connected with the medium-voltage switchgear using three single-phase cables 1 x 50 (70) mm2, in cross-linked polyethylene insulation for up to 20 kV voltage (one per phase). The cables from the medium-voltage switchgear side are terminated with elbow jack heads e.g. type EASW 20/250 (type and kind of head on the medium-voltage switchgear side is defined in the switchgear assembly and operation documentation).

3.7. Medium-voltage and low-voltage cable connections (→ page 24) The cables for transformers with connectors are terminated on the upper-voltage side with alternatively: elbow jack heads e.g. type EASW 20/250 or straight jack heads e.g. EASG 20/250. For the transformers with insulators, the cables on upper-voltage side are terminated with indoor heads e.g. type TI 24. The low-voltage cables of the RNTw switchboard are terminated with traditional KU 240 type cable terminals, and connected on the transformer side using e.g. PFISTERER type terminals or KU 240 type cable terminals. The transformer lower-voltage side terminals can be insulated with insulating covers.

3.8. Substation earthing (→ page 25) The electric shock protection of the transformer substation is made with safety earthing. The low-voltage service earthings as well as the medium-voltage and low-voltage safety earthings are all connected to common earth. Safety earthing: The substation equipment and structures are connected to the earthing busbar with the 1 x 50 mm2 cable in (yellow and green insulation). The earthing busbar is connected through the measurement contact (1 → page 25) with external substation earthing (flat section 200mm2). The building reinforcement is used as a common, metallic connection of all the substation structure components. RNTw switchboard service earthing: The PEN terminal of the RNTw switchgear is connected through the measurement contact (3) with the substation external earthing. Transformer service earthing: The transformer neutral point is connected through the measurement contact (2) with the substation external earthing. The measurement contact (2) is connected to the transformer neutral point using the LgY 1 x 50 mm2

cable – blue insulation (1 x 120 mm2 or zinc-coated flat-section 25 x 4 mm2 – acc. to the directives of Power Distribution Administration). To facilitate substation earthing installation, flat-section FeZn 50 x 4 segments are provided to connect the earthing points no. 1, 2, and 3 with the circumferential earthing.

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4. Substation assembly and foundation (→ page 26) The substation has been designed to be transportable to the construction site using traditional transportation means (weights of buildings are given in the substation building specifications → page 6). A special lifting sling or a traverse is delivered with the substation for the setting up purposes (we can guarantee assistance in proper substation installation).

4.1. Substation foundation trench and installation of the substation The substation should be placed in a foundation trench filled with water draining sub-crust breakstone or gravel of 0 ÷ 16 ÷ 25 mm granularity. In case of embankment grounds (unstable) a 15 cm thick concrete foundation slab should be made (B15 concrete with ∅12 mm wire reinforcement in 15 x 15 cm mesh), dimensions as given on page 26. Because of cable runs, the oversizing of the concrete foundation slab should be avoided (an oversized concrete slab can limit cable runs to the bushings). The depth of the substation foundation trench can be obtained as the total depth of the trench plus surface thickness, as given in the infrastructure design.

KS 19-28 z ................................... total of 650 mm KS 22-30 z ................................... total of 700 mm KS 25-36 z ................................... total of 700 mm

After setting up the substation, the transportation holes should be secured with PVC plugs (supplied with the substation).

5. Environmental protection The KS...z substations do not create any ecological threat. Buildings, doors, and all associated structures are made of environmentally friendly materials. The building base contains a leak-proof oil pit that prevents the transformer oil permeation into soil, and ground waters through the building base.

The substation installation site must guarantee a driveway and a manoeuvre field for a crane and truck carrying the substation.

health and safety regulations must be observed at all times

• the substations must be set up by cranes with lifting capacity of more than 50%

higher than the substation weight • use only the lifting slings and traverses designed for the KS... substations

We guarantee assistance in scrapping of accidentally damaged equipment. (e.g.. switchgears with SF6 gas).

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6. Warranty The manufacturer gives a limited warranty for transformer substations, equipped as ordered, for a period of minimum 24 months – excluding other vendors’ equipment, which is covered by a 12-month warranty. The manufacturer accepts no liability for damages and faults resulting from incorrect operation and usage, lack of maintenance or improperly performed engineering works. We guarantee assistance in choosing and commissioning of the substation, training of personnel, delivery of spares and consumables.

7. Documentation acceptance

During the preparation of the transformer substation documentation, apart from the legal and formal steps related to substation architecture and location, the following should be done:

• substation electrical diagram co-ordination and design, based on technical conditions issued by the relevant

Power Distribution Company • co-ordination with the Power Distribution Administration the way and type of electric power measurements,

and design of the measuring circuit (if applicable) • design of the external distribution networks • design of the substation earthing, using natural earthings, based on soil resistivity measurements • planning of the substation assembly procedure, with regard to transportation conditions

8. Ordering a substation When ordering a substation, the following should be defined: • type of substation (building) • operating voltage of the medium-voltage side • type and number of bays in the medium-voltage switchgear • configuration of the RNTw low-voltage switchboard • additional equipment of the RNTw low-voltage switchboard • transformer type, rated power, and voltages of the lower and upper-voltage sides • types of cables supplying power in the medium-voltage line bays • transformer cable connections (connectors and insulators) • substation exterior colour and contents of the warning labels (→ page 18)

9. Substation transportation and hand-over We deliver the substation with our own transportation means, and provide lifting slings and traverses to unload and set-up the substation. Location preparation and the crane to unload the substation are provided by the client. We guarantee assistance in setting-up of the station

The KS... series transformer substations are accompanied by type documentation

equipment installation after roof removal

KS 19-28 z

1

2

substation building

building roof

3

4

service door

ventilation door

5

6

7

8

9

10

exhaust grate

sealed cable bushings

medium-voltage compartment

temporary cable inlet

low-voltage compartment

transformer room

2800

1900

8

9

10

2350

1700

650

1

2

3 4 7

5

6

operated from the outside

General specifications

building width

building length

building height above ground

depth of building foundation

Protection degree

building weight less equipment

Materials

building

joinery

the building walls are finished with structural plasters in the ordered

colour (standard – sand RAL 1015)

the building roof is covered with sealing paints (standard – brown

RAL 8016 or ash RAL 7032)

joinery is painted with powder paints in the roof colour

1900 mm

2800 mm

1700 mm

650 mm

IP 43

~6500 kg

reinforced concrete (B35)

aluminium (or aluzinc)

630 kVA630 kVA

KS 19-28 z substation buildingKS 19-28 z substation building

• building wall thickness is 100 mm

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roof reinforced concrete (B45)

supplementary building dimensions fig.s 02 and 03

KS 22-30 z

1

2

substation building

building roof

3

4

service door

ventilation door

5

6

7

8

9

exhaust grate

sealed cable bushings



transformer room

30

00

2200

8

9

7

1800

700

2550 3

2

1

5

4

6


building width

building length



protection degree


Materials

building

3000 mm

2200 mm

1800 mm

700mm

IP 43

8000 kg


equipment installation after roof removaloperated from the inside


630 kVA630 kVA

14


joinery









800 375

13

50



KS 25-36 z

operated from the inside1800

700

2550

1

2

3 4

5

6

36

00

2500

8

7

9

1

2

substation building

building roof

3

4

service door

ventilation door

5

6

7

8

9

exhaust grate

cable bushings



transformer room


building width

building length



protection degree


Materials

building

3600 mm

2500 mm

1800 mm

700 mm

IP 43

10500 kg



1000 kVA1000 kVA

15


joinery







800 375

20

00


KS 25-36 z

1

2

substation building

building roof

3

4

service door

ventilation door

5

6

7

8

exhaust grate

cable bushings

medium-voltage and low-voltage compartment

transformer room


building width

building length



protection degree


Materials

building

3600 mm

2500 mm

1800 mm

700 mm

IP 43

11000 kg

reinforced concrete


operated from the inside

36

00

2500

7

8

1800

700

2550

1

2

3 4

5

6

for windmill power plants


1250 kVA1250 kVA

16

joinery







800

20

00


Set of two KS substation buildingsoperated from the outside

Set of two KS substation buildingsoperated from the outside

2 KS 22-30 z2 KS 25-36 z

500

breakstone

The set of two buildings allow to create a two-transformer substations.

Construction of such substation with typical buildings significantly facilitates

the substation set-up and allows free choice of architecture.

Division of substation weights e.g. two-transformer substations, allows use

of traditional transportation means .(especially in difficult locations)

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2 KS 19-28 z

Flat, single slope, reinforcedconcrete, 2.5% pitch

Flat, double slope, reinforcedconcrete, 5% pitch

building roofs :

Outside operated substation roofs:

• single or double slope reinforced concrete slab, covered with

sealing paints on outside in the joinery colour

• the roof is fitted with threaded transportation sockets(plugged with PVC plugs – the plugs and lifting slings for roof removal

are supplied with the substation)

Building roofs KS...zBuilding roofs KS...z

1 2

made for the substations standing adjacent

to buildings or for 2 substations.KS... z1

2 standard substation roofKS... z

Drainpipes and decorative roofs are provided for the KS... z type substations

KS 19-28 zKS 22-30 zKS 25-36 z

and 2 x KS 19-28 z2 x KS 22-30 z2 x KS 25-36 z

External designations of the KS... z substationsExternal designations of the KS... z substations

ground level

MV SWITCHGEAR

LV SWITCHGEAR

MV switchgear service door

LV switchboard service door

ventilation door 1

ventilation door 2

MV/LV TRANSFORMER

MV/LV TRANSFORMER

warning label with inscriptions:

1. DO NOT TOUCH

2. ELECTRICAL DEVICE

3. DANGER

company logosubstation typesubstation number

18

19

A B

Ctype

rated voltage

transformer bay:

- with fuse

- without fuse

number of bays

A

B

C

2 3

696 1021 1346

4 2 3 4

696 1021 1346 1671

5

SafeRing

17.5 and 24 kV

750

1345

SafePlus

17.5 and 24 kV

750

1345

(mm)

(mm)

(mm)

- application of different switchgear requires consultation

table of fuse MV links selection in MV switchgear transformer bays

upper voltage transformer power

15 kV

fuse

1000 kVA

100 kVA

160 kVA

250 kVA

400 kVA

630 kVA

63 A

10 A

16 A

25 A

25 A

40A

20 kV

1000 kVA

100 kVA

160 kVA

250 kVA

400 kVA

630 kVA

50 A

10 A

16 A

16 A

25 A

40 A

Medium – voltage switchgearin SF insulation6

Medium – voltage switchgearin SF insulation6

The MV switchgear transformer bays are equipped with a circuit breaker or a fuse. In the switchgear equipped

with the isolation switch (200 A), the transformer is protected by a combination of a high-power isolation switch, and high-

voltage HRC fuse links type CEF. The isolation switch rated current in the transformer bay is limited by the fuse link rated

current (see table below).

Detailed information on switchgear design and operation is given in installation and operation documentation of

the MV switchgears.

Note: overcurrent CT settings (for the MV switchgear with circuit breaker)– acc. to directives given in the MV switchgear documentation.

Phase order

Each bay in the MV switchgear ( ) is standard equipped with neon lamp voltage indicators, and with test sockets for

setting phase of the medium-voltage cables (in each phase).

Phasing devices are fitted on clients request.

SF6

MV switchgears in insulationSF6

As standard, the substation is designed for SF insulated

switchgear, SafeRing or SafePlus type.

:

6

Note: the UniSwitch, SafePlus and traditional, air insulated switchgears allow

free choice of configuration of medium-voltage side bays

upper voltage transformer power fuse

rated continuous current

rated feeder current

rated voltage

insulation rated voltage

1 second withstanded rated current

peak rated current

protection degree

standard colour

1250 A

160 / 400 / 630 A

230 / 400 V

660 V

16 kA

40 kA

IP 20

RAL 7032

(1600 A)

RNTz switchboardsRNTz switchboards

600 1000 1200

V

A A A

V

A A A

280

13

80

RNTz - 6 RNTz - 10 RNTz - 12

RNTz - for outside operated substations

allows hanging on the substation bearing structure

incomer from above, feeder from below

module design: 6, 10, 12 feeder bays gr. 2 (3)

ready to add:

- control/measurement system PK

- measurement/counter system PR (current transformers)

SOCOMEC Sirco 1250 A (1600 A)220 V/16 A

RB

L-2

Sta

nd

-by

Sta

nd

-by

12345678910

PV

A

V

LLL 3

16 A

D01

16 A

D01

L1, L2, L3 400/230 V, 50 HzCu 50 x 10

(Cu 80 x 10)

Cu

60

x10

(Cu

80

x10)

Cu

40

x10

(Cu

60

x10)

3

D01

RB-00

D01

PEN

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

Internal load

Compensation

PK measurement

PR measurement

additional equipment RNTz

Cu 40 x 10(Cu 60 x 10)

RNT switchboard specifications:

Example

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RNTz switchboards continue.RNTz switchboards continue.

Busbars

incomer: - busbar Cu 60x10 (Cu 80 x 10)*

- busbar Cu 40x10 (Cu 60 x 10)*

busbars as standard are fitted for busbar

current transformers installation)

feeder: - busbar Cu 50x10 (Cu 80 x 10)*

- busbar Cu 40x10 (Cu 60 x 10)*

L1, L2, L3

PEN

L1, L2, L3

PEN*( ) execution for - 1600 A

1

2

Connections with the transformer

SOCOMEC1250 A

... connection using a traditional cable terminal

5 6

L1 L2 L3 PEN

2

1

L1

L2

L3

PEN

RNTz incomer options:

• 1250 A insulating switchOETL• 1250 A fuse insulating switch• 1250 A circuit breaker• without main circuit breaker

The RNTz switchboard busbars (10 feeder bays)with SOCOMEC Sirco 1250 A (1600 A) insulating switch

Example:

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RNTz feeder options:

• SLBM gr. 2 (3) insulating switch• XLBM gr. 2 (3) insulating switch

The RNTz switchboard with network-generator or automaticstand-by switching incomer supply, requires a customised design.

przek³adnikipomiarów PK (PR)

przek³adnikibaterii kondensatorów

RNTz switchboards continue.RNTz switchboards continue.

PR, PK - measurements

The RNT switchboards allow addition of the following

measurement systems:

PR – energy counter measurement

PK – control measurement

WILK

zegar

WILK

WILK WILK

TT-2 TT-3

TP-2 TP-3

zegarzegar

WILK

zegar

WILKWILK

WILKWILK

WILKWILK

TT-2 and TT-3 in OTT-2 (OTT-3) housing

TP-2 and TP-3 in OTP-2 (OTP-3) housing

PR and PK systems measurement boards

The TT type measurement boards are adapted to install directly

on the wall or in measurement cabinets.

The TT-2 and TT-3 boards are fitted only with typical 3-phase

counter boards.

The TP-2 and TP-3 boards are fitted additionally with the terminal strip,

voltage protection, control lamps etc.

All RNT switchboards are equipped with internal load system:

service outlet, and station lighting circuit.

The RNT switchboards allow installation of a

capacitor.

transformer idle

run

Transformer power

100 kVA

160 kVA

250 kVA

400 kVA

630 kVA

Capacitor power *

2 (2.5) kVAr

2.5 (3) kVAr

3 (5) kVAr

5 (7.5) kVAr

7.5 (10) kVAr

Transformer power

100 kVA

160 kVA

250 kVA

400 kVA

630 kVA

Current transformer ratio

200 A / 5 A

300 A / 5 A

400 A / 5 A

600 A / 5 A

1000 A / 5 A

Selection of current transformers for the measurement systems

Internal load and additional equipment

22

650

850

750550

650450

500

700

* - acc. to the transformer operation recommendations

A B

C

Transformers

23

The KS... type substation permit installation of dry type transformers:

• cast wil technology transformers

• RESIBLOC technology transformers

manufacturer

power

A

B

C

ABB

160

950

780

1230

(mm)

(mm)

(mm)

(kVA)

1340 1445 1570 2040

250

990

720

400

1085

900

630

1180

1020

1000

1890

1105

Transformer – medium voltage switchgear and low-voltageswitchboard connection (see page 10)

Oil typeOil type

Medium-voltage and low-voltagecable connections

Medium-voltage and low-voltagecable connections

Transformer – medium-voltage switchgear connections

• single wire cables YHKXs with 20 kV insulation

up to 250 kVA35 mm2

from 400 kVA to 630 kVA50 mm2

from 800 kVA to 1250 kVA70 mm2

The medium-voltage switchgears in SF6 insulation permit connection of dry or oil cables.

head manufacturer

SF insulated switchgears6

line bays – incomer cables

transformer bay – cables to the transformer

F&G

ASTS 20/630; AWKS 20/630

EASW 20/250

EUROMOLD RAYCHEM

K400 TB; K400 LR

K 158 LR

RICS

RSES

Cable heads

head manufacturer

transformers

with traditional connectors (insulators)

with jack connectors

F&G

EASW 20/250; EASG 20/250

EUROMOLD RAYCHEM

K 158 LR RSES

EAVI 20; TI 24 ITK; OTK IXSU; OXSU

head manufacturer

air insulated switchgears

line bays – incomer cables

transformer bay – cables to the transformer

F&G EUROMOLD RAYCHEM

EAVI 20; TI 24

EAVI 20; TI 24

ITK; OTK

ITK; OTK

IXSU; OXSU

IXSU; OXSU

Transformer – low-voltage RNTz switchboard connections

• single wire cables YHKXs with 1 kV insulation:

up to 250 kVA1 x 240 mm2

from 400 kVA to 630 kVA2 x 240 mm2

from 800 kVA to 1250 kVA4 x 185 (240) mm2

24

FeZ

n50x4

mm

FeZn 50x4 mm

FeZ

n50x4

mm

N

PE

N

MV

switc

hg

ea

r

Div

isio

n

MV

cab

le

Tra

nsf

orm

er

ne

utr

al p

oin

t

LVsw

itch

bo

ard

KS 19-28 zKS 22-30 zKS 25-36 z

Transformer

PE

PE

Earthing busbar

FeZn 50x4 mm

Su

bst

atio

nst

ruct

ure

1

3

2

Substation earthingSubstation earthing

Safety earthing:

• the substation equipment and structures and connected to

the earthing busbar with a green and yellow insulated cable

– 1 x 50 mm2.

• the earthing busbar is connected through a test clamp

1 with external substation earthing (flat section 200 mm2).

• the building reinforcement is used as additional, common

metallic connection for all substation structure components.

RNTz switchboard service earthing:

• the PEN terminal of the RNTz switchboard is connected

through the test clamp 3 with external substation earthing.

Transformer service earthing:

• the transformer neutral point is connected through the test

clamp 2 with external substation earthing.

• the connection of the test terminal with the transformer neutral

point is made with the 1 x 50 mm2 cable (1 x 120 mm2 or

25 x 4 mm2 tinned flat section – according to Electric Power

Distribution Company) – with blue insulation.

• to facilitate creation of substation earthing, flat-section FeZn

50 x 4 segments are included to connect the earthing points

number 1, 2, and 3 with the circumferential earthing.

25

18

50

ground level

2500

3800

70

0

3300

4600

15

0

3000 2200

breakstone

Substation placement(with equipment)

traverse


3600 2500

1850

2800

4200

70

0

3900

5300

15

0

ground level

breakstone

16 T crane(25 T in case of difficulties)

trawers

Substation installation and placementSubstation installation and placement

KS 19-28 z

KS 22-30 z

KS 25-36 z

26

65

01

50

2300

3500

1900

17

00

2800

2300

4400

breakstone

ground level


16 T crane

do not oversize the foundation slab –cable runs

traverse

cable

cable

• the installation traverse issupplied with the substation

• the lifting sling for roof removalis supplied with the substation





9,5 T

12,5 T

15 T

16 T crane(25 T in case of difficulties)

Substation equipment options - standard

Transformer substation

KS 19-28 zKS 22-30 zKS 25-36 z

3

4

56 6

7

7

8

2

11

2

3

4

5

6

7

8

reinforced concrete building

medium-voltage switchgear, max. 4 bays, with insulationSF6

MV/LV transformer

low-voltage RNTz switchboard, 6, 10, 12-bay

additional equipment space

substation service door

ventilation door

exhaust grate

Equipment placement

Low voltage compartment

5

RNTz – 10 bay switchboard instandard version

RNTz – 10 bay switchboard with PKand PR measurement, and externallighting module

RNTz – 10 bay switchboard withPK and PR measurement

RNTz – 10 + RNTz – 6 with PKmeasurement, and transformeridle run compensation

kWh

kVAr kVAr


5


V

A A A

4 4


5

V

A A A

4

kWh

ST

V

A A A

4

fig. 8.1

Examples of low-voltage side of the 19-28 z substation

27

RNTz - 6, 10, 12 bay

max. 630 kVA

substation building

LV switchboard

transformer

MV switchgear: option: SF - insulation – SafeRing or SafePlus

• up to 4 bays (24 kV)

6

KS... z substation electrical diagram

RozdzLow

-voltage

sw

itchboard

RN

Tz

–(p

p.20-2

2)

MV

/LV

transfo

rmer

(p.23)

Mediu

m-v

oltage

sw

itchgear

(p.19)

Internal load

Test energy counter

Energy counter

Compensation

MV/LV oil sealed

transformer

4x2YKXS 240 cables

3x1YHKXS 50 cable

EASW 20/250 heads

SIRCO

Qsn

60W

Qnn

60W 220 V/16 A

RB

L-2

RB

L-2

RB

L-2

Sta

nd-b

y

Sta

nd-b

y

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

12345678910

PV

A

V

LLL 3

3

kVAr

A

PK :

PR :

16 A

D01

6 A

D01

6 A

D01

16 A

D01

kV

A/5A

A/5A

L1, L2, L3 400/230 V, 50 Hz Cu 50 (80) x 10

Cu 40 (60) x 10

I>

L1, L2, L3 in SF6 insulationkV

The transformer, type and number

of medium-voltage and low-voltage

switchgear bays, and additional substation

equipment are determined by the client

SafeRing or SafePlus with circuit breaker in the transformer bay with fuse...

RNTz

1

Earthing busbar

Oth

er

Str

uctu

res

LV

sw

itchboard

MV

sw

itch

ge

ar

Tra

nsfo

rmer

2

PE

N

PEN

3

28

fig 8.2

3

4

56

7

7

8

2

1

2

2a

3

4

5

6

7

8


medium-voltage switchgear, with insulationSF6

medium-voltage measurement bay

MV/LV transformer

low-voltage RNTz switchboard

additional equipment space


ventilation door

exhaust grate

Equipment placement in the KS 19-29 z substation

6

2a

1

Substation equipment options – with medium-voltage side measurement

Transformer substation

KS 19-28 zKS 22-30 zKS 25-36 z

fig. 9.1

The KS 25-36 z building allows installation of 3-bya medium-voltage

SafeRing switchgear and medium-voltage measurement module

29

RNTz - 6, 10, 12 bay

max. 630 kVA

substation building:

LV switchboard

transformer

MV switchgear: option: SF insulation – SafeRing

• 2 bays (24 kV) – with circuit breaker or fuse

• MV measurement bay

6

3x1YHKXS 50 cable

EASW 20/250 heads

EAVI 20 heads

Internal load

Test energy counter

Compensation

MV/LV oil sealed

transformer

4x2YKXS 240 cable

SIRCO

Qsn

60W

Qnn

60W 220 V/16 A

RB

L-2

RB

L-2

RB

L-2

Sta

nd-b

y

Sta

nd-b

y

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

12345678910

PV

A

V

3

kVAr

PK :

16 A

D01

6 A

D01

16 A

D01

kVA

kV

A/5A

Cu 50 (80) x 10

Cu 40 (60) x 10

RNTz

RB-00

TP board

IMZ

UMZ

3

3

L1, L2, L3in SF6 insulation

2-bay switchgear with fuse (SafeRing) in the transformer bay + medium-voltage measurement bay

3xYHKXS 50 cable

KS... w substation electrical diagram – example with measurement cell

standard additional equipment

Low

-voltage

sw

itchboard

RN

Tz

–(p

p.20-2

2)

MV

/LV

transfo

rmer

(p.23)

Mediu

m-v

oltage

sw

itchgear

(p.19)

17.5 (24) kV

1

Earthing busbar

Oth

er

Str

uctu

res

LV

sw

itchboard

MV

sw

itch

ge

ar

Tra

nsfo

rmer

2

L1,L

2,L

3

PE

N

PEN

3

fig. 9.2

30

The transformer, type and number of

medium-voltage and low-voltage

switchgear bays, and additional substation

equipment are determined by the client

Substation equipment options – example of two-transformer substation

Two-transformer substation

2KS 22-30 z

2KS 25-36 z

KS 19-28 z2

3

4

56 6

7

2

1

3

4

56 6

7

2

1

1

2

3

4

5

6

7

8

9


medium-voltage switchgear, max. 4-bay, with insulationSF6

MV/LV transformer

low-voltage RNTz 6, 10, 12-bay switchboard

additional equipment panel


ventilation door

ventilation grate

exhaust grate

Equipment placement in the 2 KS 19-29 z substation

8

8

9

9

31

fig. 10.1

2 x RNTz - 6, 10, 12 bay

2 x 630 kVA

substation building

LV switchboard

transformer

MV switchgear: 2 x SafeRing or SafePluse.g.

2 x

e.g.

e.g.

KS... z substation electrical diagram – example

Ro

zd

zie

lnic

Lo

w-v

olt

ag

esw

itch

bo

ard

RN

Tz

–(p

p.20-2

2)

MV

/LV

tran

sfo

rmer

(p.23)

Med

ium

-vo

ltag

esw

itch

gear

(p.19)

PV

6 A

D01

6 A

D01

6 A

D01

6 A

D01

PV

AA

VV

33

MV/LV oil sealed

transformer

T 1 T 2

4x2YKXS 240 cable 4x2YKXS 240 cable

3x1YHKXS 50 cable

EASW 20/250 heads

3x1YHKXS 50

EASW 20/250 heads

cable

SIRCO

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

2R

BL

-3

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

RB

L-2

11 22 33 44 55 66 77 88 99 1010

33

Compensation

Test energy counter

Internal load

Energy counter

RNTz RNTz

L1, L2, L3 400/230 V, 50 Hz L1, L2, L3 400/230 V, 50 HzCu 50 (80) x 10 Cu 50 (80) x 10

Cu 40 (60) x 10 Cu 40 (60) x 10

L1, L2, L3 in SF6 insulation L1, L2, L3 in SF6 insulation

I I> >

LL LL LL

kVArkVAr

AA

MP:MP:

PR:PR:

kV

kV kV

kV

A/5AA/5A

A/5AA/5A

1

Earthing busbar

Oth

er

Str

uctu

res

LV

sw

itchboard

MV

sw

itch

ge

ar

Tra

nsfo

rmer

kVA

kVA

SIRCO

2

3 3

2

PEN

L1

,L2

,L3

PE

N

L1

,L2

,L3

PE

N

PEN

1

Earthing busbar

Oth

er

Str

uctu

res

LV

sw

itchboard

MV

sw

itch

ge

ar

Tra

nsfo

rmer

32

fig. 10.2

The transformer, type and number of

medium-voltage and low-voltage switchgear bays,

and additional substation equipment

are determined by the client

...the medium-voltage and low-voltage switchgear

and switchboard can be equipped with mechanical locks

SafeRing or SafePlus with circuit breaker in the transformer bay SafeRing or SafePlus with circuit breaker in the transformer bay

01

fig.

33

Exte

rior

Exte

rior

1

Exte

rior

2E

xte

rior

4 Exte

rior

2

Identific

atio

nla

bel

MV

/LV

transfo

rmer

RO

OF

gre

yor

bro

wn

colo

ur

RO

OF

gre

yor

bro

wn

colo

ur

MV

/LV

transfo

rmer

WA

LLS

sand

colo

urr

WA

LLS

sand

colo

urr

ME

TA

LF

ITT

ING

Sgre

yor

bro

wn

colo

ur

ME

TA

LF

ITT

ING

Sgre

yor

bro

wn

colo

ur T

RIM

gre

yor

bro

wn

colo

ur

TR

IMgre

yor

bro

wn

colo

ur

MV

Sw

itchgear

MV

Sw

itchgear

34

Eq

uip

men

tp

lacem

en

t02

fig.

KS

19-2

8z

substa

tion

4-b

ay

Safe

Rin

gm

ediu

m-

-volta

ge

sw

itchgear

Low

-volta

ge

sw

itchboard

RN

Tz-1

0

Tem

pora

rycable

inle

t

Serv

ice

door

Ventila

tion

door

MV

/LV

transfo

rmer,

max

630

kV

A,dim

ensio

ns

max.1600

x1030

mm

35

Eq

uip

men

tp

lacem

en

t03

fig.

KS

19-2

8z

substa

tion

1415

980

995 300

Leak-p

roofoil

pit

Exhaustgra

te

UK

40/6

0cable

hold

ers

36

Tra

nsfo

rmer

insta

llatio

n04

Fig

.

Vers

ion

1

W1

vib

ratio

ndam

per

(with

leveladju

stm

ent)

NO

TE

S:

1.T

ransfo

rmer

insta

llatio

nis

perfo

rmed

afte

rsubsta

tion

roofre

moval.

2.T

he

transfo

rmer

ispla

ced

dire

ctly

inth

eoil

pit:

-on

vib

ratio

ndam

pers

(vers

ion

1),

or

-on

shock

absorb

ing

cushio

ns

(vers

ion

2)

W2

shock

absorb

ing

cushio

nT

ransfo

rmer

mountin

gstrip

s

Vers

ion

2V

ers

ion3

37

Cab

leb

ush

ing

s05

fig.

Vers

ion

1

P50

cable

bushin

g(

50

mm

)�

P70

cable

bushin

g(

0m

m)

��H

D125

(150)

Therm

o-s

hrin

ktu

be

Therm

o-s

hrin

ktu

be

Therm

o-s

hrin

ktu

be

XP

LE

insula

ted

cable

XP

LE

insula

ted

or

paper-o

ilin

sula

ted

cable

XP

LE

insula

ted

or

paper-o

ilin

sula

ted

cable

Vers

ion

2V

ers

ion

3

38

KS

...zsu

bsta

tion

sjo

inery

06

fig.

Serv

ice

door

Casem

ent-b

olt

lock

with

turn

/tilthandle

Technic

alspecific

atio

ns:

1.M

ate

rial–

alu

min

ium

or

alu

zin

csheet

2.A

nti-ru

stcoatin

g–

poly

este

rpow

der

pain

t3.In

gre

ss

pro

tectio

n–

IP43

Ventila

tion

door

Insect screen

ks z series substations - abb... z series substations transformer substations in concrete enclosures...

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