Rmu Ring Main Unit Single Line Diagram

The rm6 is a compact unit combining all mv functional units to enable connection supply and protection of transformers on an open ring or radial network.

Rmu ring main unit single line diagram.

Front view and single line diagram efi 21ka 17 5 kv 400a ct. Ring main units are available in different voltage ratings ranging from 11kv to 33kv. The ring main unit is an innovative solution that makes it easier to manage the numerous challenges of electrical distribution. Operations counter indicator.

The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers. Ring main units 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. Ring switch mechanism are equipped with safety interlocks to protect the user equipment from any unintentional operation. A complete switchgear means assembly of required switching devices protection device as well as metering device.

A ring main unit rmu is a totally sealed gas insulated compact switchgear unit. 17 5 kv 2 ring switches up to 630a 1 vacuum circuit breaker up to 630a. Advantages of ring main units. Single line mimic diagram with clear indication of switch position on off or earth position.

Sbs 3 way compact indoor type rmu sbs 3 way compact outdoor type rmu figure 1. The major advantage of ring main units is the safety they provide to the operators. B by a fuse switch combination up to 2000 kva b by a circuit breaker with protection unit up to 8000 kva. These units allow the connection of transformers through under ground cables and also provide protection to the transformers.

Ring main unit rmu is a compact enclosed and sealed type of switchgear used for medium voltage power distribution. Front view and single line diagram figure 2. 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. Fully interlocked with cable box for earth and test facility.

Rmu is an all in one solution and is safe easy to install and maintenance free switchgear helping the utilities improve reliability uptime of the network and reduce the operational costs. 17 5 kv 2 ring switches up to 630 a 1 vacuum circuit breaker up to 630a. The switchgear and busbars are enclosed in a gas tight chamber fi lled with sf6. It is a complete switchgear in itself.

Read more ring main unit rmu introduction.