Rmu Ring Main Unit

Ring main unit rmu is a compact enclosed and sealed type of switchgear used for medium voltage power distribution.

Rmu ring main unit.

Ring main unit is a compact gas insulated switchgear cubicle equipped with sf6 switch disconnector and sf6 circuit breakers. A ring main unit rmu is a totally sealed gas insulated compact switchgear unit. You see rmu is considered an all in one solution. The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers.

A ring main unit includes a combination of one or more load break switch lbs cum earth switch as incomer and outgoing feeder and vacuum circuit breaker with associated disconnector and earth switch for load feeders. That makes it a lot simpler to handle the various challenges of electrical distribution. In an electrical power distribution system a ring main unit rmu is a factory assembled metal enclosed set of switchgear used at the load connection points of a ring type distribution network. The below figure shows the rmu with 3 incomers and 1 outgoing feeder to distribution transformer.

Both oil and gas insulated ring main units are the result of extensive innovation using advanced technologies and are subjected to extensive testing and safety standards. The secondary power distribution equipment refers to the medium voltage switchgear that redistributes the electrical energy of the primary power distribution equipment that receives the high voltage transformer. It s also safe simple to install and maintenance free switchgear. The ring main unit rmu is a secondary power distribution equipment.

Our range of ring main units rmus are all suitable for both indoor and outdoor locations and are designed to operate in the most extreme environmental conditions. What is ring main unit rmu. Different combinations of these primary switching devices within the unit are commonly used. Advantages of ring main unit.

A ring main unit is no doubt a ground breaking solution. It is a complete switchgear in itself. Rmu ring main units sfa rm units are designed to supply reliable energy and protect electrical equipment in secondary distribution networks up to 36 kv.