RN-W — low-voltage switchgear for substations up to 2000 A
Country: Poland · Model: RN-W
The RN-W low-voltage switchboard is rated for a current of 1250, 1600 or 2000 A and a short-time withstand current of 35 kA for 1 s. It is installed in urban transformer substations, industrial plants and commercial buildings, and in substations it serves as the main LV switchgear.
- Rated current
- 1250 / 1600 / 2000 A
- Short-time withstand current
- 35 kA (1 s)
- Peak withstand current
- up to 77 kA
- Earthing systems
- TN-S, TN-C, TN-C-S, TT, IT
Technical specifications
| Rated current | 1250 / 1600 / 2000 A |
|---|---|
| Short-time withstand current | 35 kA (1 s) |
| Peak withstand current | up to 77 kA |
| Earthing systems | TN-S, TN-C, TN-C-S, TT, IT |
| Features | switch-disconnector replacement without de-energizing, live extension |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The peak withstand current of the assembly reaches 77 kA. The switchboard works in TN-S, TN-C, TN-C-S, TT and IT earthing systems, so it suits both regional utility networks and sites with an isolated neutral. The switch-disconnector is replaced without de-energizing, so repairing one line does not disconnect consumers on neighboring feeders. The switchboard can also be extended with new sections while live, which is convenient when the substation load grows in stages. The design is adapted to the tight space of a transformer substation, where the switchboard stands next to the transformer and the medium-voltage unit.
How to choose
The rated current is chosen according to the transformer power, and within the RN-W series it is 1250, 1600 or 2000 A. If the main switchboard has to carry up to 6300 A or withstand an internal arc of 105 kA for 1 s, the ZR-W is the right choice. For secondary automation and metering boards with busbars of 250–1600 A the INSTAL-BLOK is more convenient, and for currents up to 7000 A the manufacturer assembles the Sivacon S8.
Request a price and lead time
RN-W — low-voltage switchgear for substations up to 2000 A. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What rated current is the RN-W switchboard available for?
The switchboard is made for 1250, 1600 or 2000 A, and the choice depends on the power of the substation transformer.
What short-circuit current can the RN-W withstand?
The short-time withstand current is 35 kA for 1 s, and the peak withstand current reaches 77 kA.
In which earthing systems can the RN-W be used?
In TN-S, TN-C, TN-C-S, TT and IT systems.
Can the switch-disconnector in the RN-W be replaced without shutting down the substation?
Yes, the design allows the switch-disconnector to be replaced without de-energizing, and the switchboard to be extended while live.
How does the RN-W differ from the ZR-W?
The RN-W is rated for a current of up to 2000 A and 35 kA withstand, while the ZR-W works in the 1000–6300 A range with a short-time withstand current of up to 105 kA and is intended for main switchgear.
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Need a price, lead time or replacement?
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