Technical description

ZR-W system switchgears are designed for energy distribution at each level, as well as control and protection of electrical devices against short-circuit and overload effects. They can be used as primary or sectional switchgears, or as control cabinets.
Thanks to the configuration universality, the ZR-W switchgear can be applied to the following industrial branches:
- chemical / petrochemical,
- pharmaceutical,
- power plants and thermal-electric power stations,
- heavy industry: mines, steel plants, coking plants,
- light industry: paper, textile, production of household appliances.
As well as for infrastructure needs:
- server facilities,
- airports,
- offices,
- shopping centres,
- hospitals.
Characteristics
- Simple assembly system, which does not require complicated manufacturing processes and tools, that considerably shorten the production time,
- Well thought-out construction composed of repeatable elements, which enables serial production of the switchgear ‘s components,
- Easy to modify (reconstructions and expansions), which makes it possible to adapt the device to changing needs,
- Depending on the requirements, it is possible to manufacture switchgears with primary busbars located at the top or at the back of the cubicle, which enables cables to be conducted both from the top and the bottom side of the switchgear,
- Withdrawable module technology assures quick device replacement without the need to switch off the whole switchgear,
- Easier service operations and maintenance, possibility to install various function modules in the cubicle,
- The switchgear has been completely examined according to the newest PN-EN 61439-1/2 standard, which focuses on operator safety,
- 25 years of experience in designing and developing switchgears has resulted in the introduction of a wide range of safety improvements,
- The switchgear is equipped only with high-quality materials and apparatus, which meet European requirements.
Technical data
Compliance with standards:
The ZR-W type switchgear meets the requirements of the following standards:
- PN-EN 61439-1 - “Low Voltage Switchgear and Control gear – Part 1: Common specifications”,
- PN-EN 61439-2 -“Low Voltage Switchgear and Control gear – Part2: Low voltage switchgear and control gear for power distribution”,
- PN-EN 60529 – “Degrees of protection provided by enclosures (IP code)”,
- PN-EN 50102 – “Degrees of protection against mechanical damages provided by the enclosures of the electrical devices (IK code)”.
Electrical data: |
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Rated voltage of the isolation | 690 V / 1000 V / 1500 V1) AC up to1500 V DC |
Rated connection voltage | 400 V / 500 V / 690 V / 1000 V2) AC up to1200 V DC |
Rated test impulse withstand voltage | 8 kV / 12 kV |
Rated frequency | 50 Hz |
Rated current rozdzielnicy | from 1000 up to 6300 A |
Rated short-time withstand current | from 105 kA (1s) |
Rated peak current strength | from 231 kA |
1) In special design up to 1500 V AC.
2) In special design up to 1000 V AC.
Mechanical data: |
|
Dimensions | Width from 400 up to1200 mm Height 1900 / 2200 mm Depth 600 / 800 / 1000 mm |
Protection degree IP | from IP20 up toIP54 |
Protection degree IK | up to IK 10 |
Compartment division | from 2A up to4B |
Surface protection | Zinc and galvanized steel constructions- 2,5 mm Door covers from metal painted- 1,5 / 2 mm3) Covers from metal painted- 1,5 mm |
Paint (powder technology): | standard - RAL 7035 or another colour – on request |
Plastic components | Halogen-free, self-extinguishing, fire-resistant, do not contain CFC |
3) Different construction technology, after prior consultation with the manufacturer.
Service conditions: |
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Ambient temperature - Lower limit of the ambient temperature - upper limit of the ambient temperature - daily average ambient temperatures |
-5°C (- 25°C)4) + 40°C -5°C up to35°C |
Relative humidity | up to 50% (at temperature. 40°C) |
Installation altitude | up to 1000 meters above sea level |
Atmosphere in installation place | Free from chemically aggressive dust, steam and gases |
4) Depend on apparatus used.
On the customer’s request it is possible to design a switchgear adapted to other conditions.
Switchgear construction
The main mechanical construction of the switchgear is composed of:
- a structure made from zinc profiles,
- elements that divide functional compartments, such as: horizontal and vertical partitions,
- external covers (door/ side and back walls / roof / floor).
Depending on the method of production, cells can be partially or entirely covered .The door, front covers and back walls can be equipped with ventilation grilles. Inspection windows installed on the door are made from multiple-walled glass or plastic.
Bays size
Construction dimensions |
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Height (mm) |
Width (mm) |
Depth (mm) |
1900 / 2200 | 400 | 600 / 800 / 1000 |
500 | ||
600 | ||
700 | ||
800 | ||
900 | ||
1000 | ||
1100 | ||
1200 |
Busbars
In the ZR-W type switchgear the following types of busbar systems are applied:
- primary busbars,
- distribution busbars,
- protective earth and neutral busbars (PE+N/PEN)
Primary busbars
Primary busbars located at the top of the switchgear cubicle
Phase and neutral N primary busbars (protective earth-neutral PEN applied for 4-wire cable) are located at the top of the switchgear in the busbar compartment. For 6300 A current, the upper busbar compartment is expanded with an extension with primary busbars, which increases the volume of the switchgear. Protective earth primary PE busbars (for 5-wire cable system) are located in the front at the lower part of the cubicle along its head.
Busbars located at the back of the switchgear cubicle
Phase and neutral N primary busbars (protective earth neutral PEN applied for 4-wire cable) are located at the back of the switchgear in the busbar compartment. They are led on the lower or upper part depending on the configuration. Protective earth primary PE busbars (for 5-wire cable system) are located in the front at the lower part of the cubicle along its head.
Distribution busbars

Vertical distribution busbars are located in the busbar compartment, on the left side of the switchgear cubicle. They are used for connecting fixed, plug-in and withdrawable outgoing blocks. A neutral N busbar and protective earth PE busbar (for 5-wire cable system) or a protective earth neutral PEN (for 4-wire cable system) are then arranged vertically in the connection compartment.
Bays types
The ZR-W type switchgear is composed of a combination of 9 bay types:
- Bay with circuit breaker,
- Coupler bay,
- Bay with vertical fuse switch disconnectors,
- Bay with horizontal fuse switch disconnectors,
- Receiving bay
- Free installation bay,
- Cassette bay,
- Capacitor banks bay,
- Corner bay.
Bay with circuit breaker
Technical data of the bay with circuit breaker |
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Field of application |
Power supply |
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Protection degree | Ventilated for IP41 Non-ventilated for IP54 |
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Bay dimensions | Height Width Depth |
1900 / 2200 mm 400*) / 500 / 600 / 700 / 800 / 900/ 1000 / 1100 / 1200 mm 600 / 800 / 1000 mm |
Possibility to install the apparatus | Air circuit breaker up to 6300 A Compact circuit breaker up to 1600 A |
Form 2B / 3A / 4B |
Compartment division | Form 2B / 3A / 4B | |
Bay manner of performance | ||
Upper location of the primary busbar | Bay depth 600 | Terminal: - side / back / bottom busbar - bottom busbar system - cable at the bottom, up to 12 cables of 240 mm2 |
Upper location of the primary busbar | Bay depth 800 / 1000 | Terminal: - side / back / bottom busbar - bottom busbar system - cable at the top / bottom, up to 12 cables of 240 mm2 |
Back location of the primary busbar | Bay depth 600 | Terminal: - top / bottom busbar - top / bottom busbar system - cable at the top / bottom, up to 12 cables of 240 mm2 |
Back location of the primary busbar | Bay depth 800 / 1000 | Terminal: - side / top / bottom busbar - top / bottom busbar system - cable at the top / bottom, up to 12 cables of 240 mm2 |
*) Solution applied only to bays with a back busbar system.
Minimum bay dimensions depending on installed apparatus: | ||||
Apparatus type | Rated current | Bay width (3-pole apparatus) | Bay width (4-pole apparatus) | Bay depth |
Stationary or withdrawable compact circuit breaker | Up to 1600 A | 400*) / 500 mm | 600 mm | 600 mm |
Stationary or withdrawable power circuit breaker | Up to 1600 A | 600 mm | 800 mm | 600 mm |
Stationary power circuit breaker | From 2000 up to 3200 A | 600*) / 700 mm | 800 mm | 600 mm |
Withdrawable power circuit breaker | From 2000 up to2500 A | 600*) / 700 mm | 800 mm | 600 mm |
Stationary power circuit breaker | 4000 A | 800 mm | 900 mm | 800 mm |
Withdrawable power circuit breaker | From 3200 up to 4000 A | 800 mm | 900 mm | 800 mm |
Stationary or withdrawable power circuit breaker | From 5000 up to 6300 A | 1000 mm | 1200 mm | 1000 mm |
*) Solution applied only to bays with a back busbar system.
Coupler bay
Coupler bay technical data: |
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Field of application | Coupler between sections | |
Protection degree | Ventilated for IP41 Non-ventilated for IP54 |
|
Bay dimensions | Height Width Depth |
1900 / 2200 mm 600*) / 700*) / 800 / 900 / 1000 / 1100 / 1200 mm 600 / 800 / 1000 mm |
Possibility to install the apparatus | Air circuit breaker up to 6300 A Compact circuit breaker up to 1600 A |
|
Compartment division | Form 2B / 3A / 4B | |
Upper location of the primary busbar | Bay depth depends on the power supply bay depth | Busbar connection of two upper tracks using a riser compartment |
Back location of the primary busbar | Bay depth depends on the power supply bay depth | Upper busbars connection with down busbars |
*) Solution applied only to bays with a back busbar system.
Minimum bay dimensions depending on installed apparatus: | ||||
Apparatus type | Rated current | Bay width (3-pole apparatus) |
Bay width (4-pole apparatus) |
Bay depth |
Stationary or withdrawable compact circuit breaker | Up to 1600 A | 600 mm | 700 mm | 600 mm |
Stationary or withdrawable power circuit breaker | Up to 1600 A | 700*) / 800 mm | 800 mm | 600 mm |
Stationary power circuit breaker | From 2000 up to 3200 A | 900 mm | 1000 mm | 600 mm |
Withdrawable power circuit breaker | From 2000 up to 2500 A | 900 mm | 1000 mm | 600 mm |
Stationary power circuit breaker | 4000 A | 1100 mm | 1200 mm | 800 mm |
Withdrawable power circuit breaker | From 3200 up to 4000 A | 1100 mm | 1200 mm | 800 mm |
Stationary or withdrawable power circuit breaker | From 5000 up to 6300 A | 1200 mm | ---------------- | 1000 mm |
*) Solution applied only to bays with a back busbar system.
Bay with vertical fuse switch disconnectors
Technical data of the bay with vertical fuse switch disconnectors: |
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Field of application | Outgoings on the fuse switch disconnectors | |
Protection degree | Ventilated for IP2X Non-ventilated for IP54 |
|
Bay dimensions | Height Width Depth |
1900 / 2200 mm 400*) / 500 / 600 / 700 / 800 / 900/ 1000 / 1100 / 1200 mm 600 / 800 / 1000 mm |
Possibility to install the apparatus | Strip-type fuse switch disconnectorssize 00 up to 3 Twin switch disconnector installation (size3) 800 A / 1000 A / 1250 A |
|
Compartment division | Form 2B | |
Bay manner of performance | ||
Upper location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom, up to 3 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Back location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom or top, up to 3 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Primary busbar positions | Bay depth 800 / 1000 | Terminal: - cables from the bottom or top, up to 3 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
*) Solution applied only to bays with a back busbar system.
Minimum bay dimensions depending on installed apparatus: | |||||||||
Bay width | 400*) | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1120 |
Number of 00 size apparatus | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 |
Number of 1 size apparatus | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
Number of2 size apparatus | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ---- |
Number of 3 size apparatus | 3 | 4 | 5 | 6 | 7 | ---- | ---- | ---- | ---- |
*) Solution applied only to bays with a back busbar system.
Bay with horizontal fuse switch disconnectors
Technical data of the bay with horizontal fuse switch disconnectors: |
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Field of application | Outgoings on the fuse switch disconnectors | |
Protection degree | Ventilated for IP2X Non-ventilated for IP54 |
|
Bay dimensions | Height Width Depth |
1900 / 2200 mm 1100 / 1200 mm 600 / 800 / 1000 mm |
Possibility to install the apparatus | Strip-type fuse switch disconnectorssize 00 up to 3 | |
Compartment division | Form 2B / 3B / 4B | |
Bay manner of performance | ||
Upper location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom, up to 3 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Back location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom or top, up to 3 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Primary busbar positions | Bay depth 800 / 1000 | Terminal: - cables from the bottom or top, up to 3 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Minimum bay dimensions depending on installed apparatus: | ||
Bay width | 1000 mm | 1200 mm |
Number of 00 size apparatus | up to 15 | up to 19 |
Number of 1 size apparatus | up to 10 | up to 15 |
Number of 2 size apparatus | up to 9 | up to 11 |
Number of 3 size apparatus | up to 6 | up to 7 |
Receiving bay
Receiving bay technical data: |
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Field of application | Outgoings on the box fuse switch disconnectors, compact circuit breakers or motor modules | |
Protection degree | Ventilated for IP41 Non-ventilated for IP54 |
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Bay dimensions | Height Width Depth |
1900 / 2200 mm 1100 / 1200 mm 600 / 800 / 1000 mm |
Possibility to install the apparatus | Box fuse switch disconnectors Compact circuit breakers up to 800 A motor power suppliers (protection/ contactor) Modular apparatus |
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Compartment division | Form 2B / 3B / 4B | |
Bay manner of performance | ||
Upper location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom, up to 2 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Back location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom or top, up to 2 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Primary busbar positions | Bay depth 800 / 1000 | Terminal: - cables from the bottom or top, up to 2 cables for each switch disconnector, cable cross-sections according to the manufacturer’s catalogue |
Possibility to install the apparatus: |
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Height bloku | Possibility to install the apparatus in the block |
150 mm | Stationary compact circuit breaker up to 160 A Box fuse switch disconnector up to 160 A Modular apparatus |
200 mm | Plug compact circuit breaker up to 160 A Stationary compact circuit breaker up to 250 A |
250 mm | 3- pole stationary compact circuit breaker up to 630 A 3- pole plug or withdrawable compact circuit breaker up to 400 A 3-pole box fuse switch disconnector up to 400 A |
300 mm | Four fuse switch disconnectors or compact circuit breakers installed vertically (current ≤ 160 A ) 3- pole stationary compact circuit breaker up to 800 A 3- pole plug or withdrawable compact circuit breaker up to 630 A Meters for electrical energy Various apparatus |
In a cubicle with height 2200 the field for apparatus application is 1900 mm
In a cubicle with height 1900 the field for apparatus application is 1500 mm
Free installation bay
Free installation bay technical data: |
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Field of application | Bay for customer’s specific configurations | |
Protection degree | Ventilated for IP41 Non-ventilated for IP54 |
|
Bay dimensions | Height Width Depth |
1900 / 2200 mm 400*) / 500 / 600 / 700 / 800 / 900 / 1000 / 1100 / 1200 mm 600 / 800 / 1000 mm |
Possibility to install the apparatus | Bay designed to install customer’s apparatus, such as: frequency changers, softstarts, non-typical control apparatus, etc. | |
Compartment division | Form 2A | |
Bay manner of performance | ||
Upper location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom, cable cross-sections according to customer’s specifications |
Back location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom or top, cable cross-sections according to customer’s specification |
Primary busbar positions | Bay depth 800 / 1000 | Terminal: - cables from the bottom or top, cable cross-sections according to customer’s specification |
*) Solution applied only to bays with a back busbar system.
Cassette bay
Cassette bay technical data: |
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Field of application | Cassette outgoings | ||
Protection degree | Ventilated for IP41 | ||
Bay dimensions | Height Width Depth |
1900 / 2200 mm 1000 / 1200 mm 600 / 800 / 1000 mm |
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Possibility to install the apparatus | Cassettes (withdrawable module from 8M/2 to 24M/1) | ||
Cassette type | Maximum current | Maximum number of cassettes in the cubicle | |
8M/2 | 63 A | 18 | |
8M/1 | 160 A | 9 | |
14M/1 | 250 A | 4 | |
20M/1 | 400 A | 3 | |
24M/1 | 630 A | 2 | |
Compartment division | Form 2B / 3B / 4B | ||
Bay manner of performance | |||
Upper location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom in the cable duct |
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Back location of the primary busbar | Bay depth 600 | Terminal: - cables from the bottom or top in the cable duct |
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Primary busbar positions | Bay depth 800 / 1000 | Terminal: - cables from the bottom or top in the cable duct |
*) Solution applied only to bays with a back busbar system.
Capacitor banks bay
Capacitor banks bay technical data: |
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Field of application | Capacitor or choke type battery with power from 160 up to 600 kvar - From 160 kvar to 460 kvar by increments of 20 kvar - 500 / 550 / 600 kVA by increments of 25 kvar |
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Protection degree | Ventilated for IP31 | |
Bay dimensions | Height Width Depth |
1900 / 2200 mm 600 / 800 / 1000 / 1200 mm 600 / 800 / 1000 mm |
Possibility to cover the capacitor steps or capacitor-choke steps | Battery increment size used | |
Non-choke-type | Choke | |
5 kvar | 10 kvar | |
10 kvar | 15 kvar | |
15 kvar | 20 kvar | |
20 kvar | 25 kvar | |
30 kvar | 30 kvar | |
40 kvar | 40 kvar | |
50 kvar | 50 kvar | |
60 kvar | ||
Compartment division | Form 2A | |
Bay manner of performance | ||
Battery connected in line with the main switchgear | Busbar terminal from switchgear primary busbars Cable connection from the top or bottom |
|
Separate battery | Cable connection from the top or bottom |
Notice:
More information about capacitor banks can be found in chapter BK, BKD - Capacitor Banks
Corner bay
Corner bay technical data: |
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Field of application | Bay connecting switchgear cubicles, which form a “L” shape | |
Protection degree | Ventilated for IP41 Non-ventilated for IP54 |
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Bay dimensions | Height Width Depth |
1900 / 2200 mm 700 / 900 / 1100 mm 700 / 900 / 1100 mm |
Busbar connection in top and back layout | Top busbar track 1600 / 2000 / 2500 / 3200 /4000 / 5000 / 6300 A Back busbar track 1600 / 2000 / 2500 / 3200 /4000 / 5000 / 6300 A |
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Compartment division | Form 1 | |
Cable connections | Does not apply to |
General conditions of positioning and setting of the switchgear
Setting
Flooring must be leveled, and the floor unevenness cannot exceed 1 mm / 1000 mm.
The switchgear cubicle can be installed directly on the ground, duct frame or steel construction of the facility.
Sk - duct width Sk =(G-100)
G - switchgear cubicle depth (600, 800, 1000)