Rmu Ring Main Unit

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.

Rmu ring main unit.

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. 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 ring main unit rmu is a secondary power distribution equipment.

Different combinations of these primary switching devices within the unit are commonly used. 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. It s also safe simple to install and maintenance free switchgear. What is ring main unit rmu.

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

Ring main unit is a compact gas insulated switchgear cubicle equipped with sf6 switch disconnector and sf6 circuit breakers. A complete switchgear means assembly of required switching devices protection device as well as metering device. It includes in one unit two switches that can connect the load to either or both main conductors and a fusible switch or circuit breaker and switch that feed a distribution transformer. 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.

That makes it a lot simpler to handle the various challenges of electrical distribution. Advantages of ring main unit. The below figure shows the rmu with 3 incomers and 1 outgoing feeder to distribution transformer.