ks z series substations - abb... z series substations transformer substations in concrete enclosures...
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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
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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.
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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)
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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
22-30 z substation with 630 kVA transformer.......................................... 2890 MJ/ m2
25-36 z substation with 630 kVA transformer.......................................... 2165 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.
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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
medium-voltage compartment
low-voltage compartment
transformer room
30
00
2200
8
9
7
1800
700
2550 3
2
1
5
4
6
General specifications
building width
building length
building height above ground
depth of building foundation
protection degree
building weight less equipment
Materials
building
3000 mm
2200 mm
1800 mm
700mm
IP 43
8000 kg
reinforced concrete (B35)
equipment installation after roof removaloperated from the inside
KS 22-30 z substation buildingKS 22-30 z substation building
630 kVA630 kVA
14
roof reinforced concrete (B45)
joinery
the building walls are finished with structural plasters in the ordered
colour (standard – sand RAL 1015)
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
aluminium (or aluzinc)
800 375
13
50
• building wall thickness is 100 mm
equipment installation after roof removal
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
medium-voltage compartment
low-voltage compartment
transformer room
General specifications
building width
building length
building height above ground
depth of building foundation
protection degree
building weight less equipment
Materials
building
3600 mm
2500 mm
1800 mm
700 mm
IP 43
10500 kg
reinforced concrete (B35)
KS 25-36 z substation buildingKS 25-36 z substation building
1000 kVA1000 kVA
15
roof reinforced concrete (B45)
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
aluminium (or aluzinc)
800 375
20
00
• building wall thickness is 100 mm
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
General specifications
building width
building length
building height above ground
depth of building foundation
protection degree
building weight less equipment
Materials
building
3600 mm
2500 mm
1800 mm
700 mm
IP 43
11000 kg
reinforced concrete
equipment installation after roof removal
operated from the inside
36
00
2500
7
8
1800
700
2550
1
2
3 4
5
6
for windmill power plants
KS 25-36 z substation buildingKS 25-36 z substation building
1250 kVA1250 kVA
16
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
aluminium (or aluzinc)
800
20
00
• building wall thickness is 100 mm
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
20
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:
21
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
Substation placement(with equipment)
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
Substation placement(with equipment)
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
• the installation traverse issupplied with the substation
• the lifting sling for roof removalis supplied with the substation
• 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
Low voltage compartment
5
Low voltage compartment
V
A A A
4 4
Low voltage compartment
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
reinforced concrete building
medium-voltage switchgear, with insulationSF6
medium-voltage measurement bay
MV/LV transformer
low-voltage RNTz switchboard
additional equipment space
substation service door
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
reinforced concrete building
medium-voltage switchgear, max. 4-bay, with insulationSF6
MV/LV transformer
low-voltage RNTz 6, 10, 12-bay switchboard
additional equipment panel
substation service door
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
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