ZR-W — main low-voltage switchboard up to 6300 A
Country: Poland · Model: ZR-W
The ZR-W main low-voltage distribution board covers rated currents from 1000 to 6300 A with a short-time withstand current of up to 105 kA for 1 s. The cabinet system is used for main and secondary switchgear and control boards in the chemical, power and heavy industries, in data centers, airports and hospitals.
- Rated current
- 1000–6300 A
- Short-time withstand current
- up to 105 kA (1 s)
- Peak withstand current
- up to 231 kA
- Internal arc resistance
- 105 kA / 1 s
Technical specifications
| Rated current | 1000–6300 A |
|---|---|
| Short-time withstand current | up to 105 kA (1 s) |
| Peak withstand current | up to 231 kA |
| Internal arc resistance | 105 kA / 1 s |
| Version | fixed and withdrawable, busbars at top or rear |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The peak withstand current for which the busbars are rated reaches 231 kA. Internal arc resistance of 105 kA for 1 s matters in rooms where personnel work next to live equipment. The devices are installed in a fixed arrangement or on withdrawable modules, and the second option shortens downtime when a breaker is replaced, because the module is removed without disconnecting the cable connections. The busbars are placed at the top or rear of the cabinet, which simplifies the connection of a busway from a transformer or generator. The frame made of modular posts makes it possible to arrange incomer, bus-section and outgoing feeder sections for a specific single-line diagram.
How to choose
The main factors when choosing the ZR-W are the incomer current and the expected short-circuit current at the installation point. For a substation rated up to 2000 A with a short-time withstand current of 35 kA the simpler RN-W is sufficient. When currents above 6300 A, up to 7000 A, or a peak current of up to 330 kA are required, the Sivacon S8 assembled by is considered. For outgoing automation boards with busbars of 250–1600 A the INSTAL-BLOK is used.
Request a price and lead time
ZR-W — main low-voltage switchboard up to 6300 A. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the maximum rated current of the ZR-W switchboard?
The rated current range of the ZR-W is 1000–6300 A.
What internal arc resistance does the ZR-W have?
The switchboard withstands an internal arc of 105 kA for 1 s.
What peak withstand current can the ZR-W withstand?
The peak withstand current reaches 231 kA, and the short-time withstand current is up to 105 kA for 1 s.
Is the ZR-W available in a withdrawable version?
Yes, the switchboard is made in fixed and withdrawable versions, with the busbars connected from the top or rear.
Where is the ZR-W switchboard used?
As main and secondary switchgear and control boards in the chemical, power and heavy industries, in data centers, airports and hospitals.
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