Rmu 11kv Ring Main Unit Circuit Diagram
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The units are locally manufactured and assembled in production facilities in united arab emirates.
Rmu 11kv ring main unit circuit diagram. An example of this is an 11kv or above. 17 5 kv 2 ring switches up to 630 a 1 vacuum circuit breaker up to 630a. Front view and single line diagram efi 21ka 17 5 kv 400a ct. Sbs 3 way compact indoor type rmu sbs 3 way compact outdoor type rmu figure 1.
Ring main unit circuit diagram. 17 5 kv 2 ring switches up to 630a 1 vacuum circuit breaker up to 630a. 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. Ring main unit comprises of one incomer feeder and one or more outgoing feeder.
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 main unit rmu is a compact sealed for life metal enclosed switchgear widely used in urban power distribution network. These units allow the connection of transformers through under ground cables and also provide protection to the transformers. Ring main unit is utilized in a substation in a high voltage distribution.
Front view and single line diagram figure 2. 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 are available in different voltage ratings ranging from 11kv to 33kv. This incomer feeder is given with the provision of bushing protruding from the enclosure of rmu for supply cable connection.
Advantages of ring main units. The ring switches are fault make load break enclosed. Indoor and outdoor installation. The incomer feeder is either vacuum circuit breaker or sf 6 circuit breaker with associated disconnect switch and earth switch.
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. 11kv ring main distribution network scientific diagram. It is a ring system where one line is interrupted or fails the other will work.
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