Ring Main Unit Drawing

The ring starts at the consumer unit also known as fuse box distribution board or breaker box visits each socket in turn and then returns to the consumer unit.

Ring main unit drawing. They are not so common in the uk but are used extensively abroad as the ring main or final ring circuit does have it s drawbacks. The ring is fed from a fuse or circuit breaker in the consumer unit. Different combinations of these primary switching devices within the unit are commonly used. 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.

The main purpose of a spur is adding an extra socket on to an existing ring main circuit. In the uk at 11 kv. An example of this is an 11kv or above. Ring main unit is utilized in a substation in a high voltage distribution.

It is a ring system where one line is interrupted or fails the other will work. The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers. It includes in one unit two switches that connect both sides of the load to the main conductors and a fusible switch or circuit breaker that tee off to feed a distribution transformer medium. 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.

Wiring a socket correctly in a final ring circuit or ring main. 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. A very fantastic ring main unit rmu presentation by us. We will always be behind you and good cooperative partner in china.

Design and protection for ring main circuits. Essentially it s three switches incorporated into one device used to. As you can see it eliminates the need to wire a socket all the way back to the a consumer unit but the nearest ring main socket is used instead. Hey i am tony wang.

A ring main unit rmu is a totally sealed gas insulated compact switchgear unit. Its simplicity makes it a great arrangement for that use. A ring main unit rmu is a totally sealed gas insulated compact switchgear unit.