SF6 Gas Insulated Ring Main Unit

SF6 Gas Insulated Ring Main Unit

Rockwill provide with you whole solution for SF6 gas insulated switchgear.

The range of voltage rating from 12kV, 24kV to 36kV.

Current rating from 630A to 3150A.

Short circuit current rating from 16kA to 40kA.

RMR RMU is a secondary switchgear,Which is rating up to 40.5kV,1250A,25kA

RGIS C-GIS is a primary switchgear, which is rating up to 40.5kV,3150A,40kA.

RMC M-GIS is economic type GIS switchgear, to connection from RMU to C-GIS. The rating is up to 40.5kV,1250A,31.5kA.

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What is RMU, Ring Main Unit

Ring Main Unit (RMU) is a totally sealed with SF6 gas or other insulation material, Rockwill's RMU is a gas-insulated compact switchgear unit.

A ring main unit or RMU is combinated wiith minimum three ways together, The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers (VCB or GCB).

Normally, a primary circuit breaker is the switching device, which can be vacuum circuit breaker or gas circuit breaker ,etc. it is always equipped with protective relay,  it is a very basic self-powered type or a more advanced one with communication capabilities.
The rated voltage and current ranges for RMUs typically reach up to 40.5 kV and 630 A respectively.

Different combinations SLD request pls contact us.