Rmu 11kv Ring Main Unit Circuit Diagram

17 5 kv 2 ring switches up to 630a 1 vacuum circuit breaker up to 630a.

Rmu 11kv ring main unit circuit diagram.

Ring main unit comprises of one incomer feeder and one or more outgoing feeder. 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. The ring switches are fault make load break enclosed.

This incomer feeder is given with the provision of bushing protruding from the enclosure of rmu for supply cable connection. 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. Indoor and outdoor installation. An example of this is an 11kv or above.

Ring main units are available in different voltage ratings ranging from 11kv to 33kv. Advantages of ring main units. The units are locally manufactured and assembled in production facilities in united arab emirates. 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.

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 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 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.

It is a ring system where one line is interrupted or fails the other will work. 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 figure 2.

Sbs 3 way compact indoor type rmu sbs 3 way compact outdoor type rmu figure 1. 11kv ring main distribution network scientific diagram. The incomer feeder is either vacuum circuit breaker or sf 6 circuit breaker with associated disconnect switch and earth switch.