Rmu 11kv Ring Main Unit Circuit Diagram

Ring main unit rmu is a compact sealed for life metal enclosed switchgear widely used in urban power distribution network.

Rmu 11kv ring main unit circuit diagram.

Indoor and outdoor installation. 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. Ring main unit circuit diagram. Front view and single line diagram figure 2.

11kv ring main distribution network scientific diagram. Ring main distribution with rmu power unit as an important part of circuit breaker introduction it is the manufacturers and function does a serve cur interruption technologies. This incomer feeder is given with the provision of bushing protruding from the enclosure of rmu for supply cable connection. The units are locally manufactured and assembled in production facilities in united arab emirates.

17 5 kv 2 ring switches up to 630 a 1 vacuum circuit breaker up to 630a. These units allow the connection of transformers through under ground cables and also provide protection to the transformers. Front view and single line diagram efi 21ka 17 5 kv 400a ct. This model is the principal unit in which two ring switches and a tee off circuit breaker accompanied by a disconnector switch are contained in a common tank.

17 5 kv 2 ring switches up to 630a 1 vacuum circuit breaker up to 630a. Technical specification for 22 and 11 kv ring main unit switchgear table of contents 1 0 scope 2 0 general 3 0 standards 4 0 the standards mentioned above are available from 5 0 climate conditions 6 0 rmu outdoor metal clad 7 0 take off terminal units for future automation 8 0 isolator load break type. The incomer feeder is either vacuum circuit breaker or sf 6 circuit breaker with associated disconnect switch and earth switch. The major advantage of ring main units is the safety they provide to the operators.

Ring main unit is utilized in a substation in a high voltage distribution. Ring main units are available in different voltage ratings ranging from 11kv to 33kv. Ring main unit comprises of one incomer feeder and one or more outgoing feeder. The ring switches are fault make load break enclosed.

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. 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. Sbs 3 way compact indoor type rmu sbs 3 way compact outdoor type rmu figure 1.