Ring Main Distribution System Diagram

Ring main distribution system a similar level of system reliability to that of the parallel feeders can be achieved by using ring distribution system here each distribution transformer is fed with two feeders but in different paths.

Ring main distribution system diagram. In other words the consumer in the radial electrical distribution system would be in darkness until the feeder or transformer was rectified. In an electrical power distribution system 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. Shows ac ring main system where bcdab is the closed feeder supplied by the sub station s at point b. A similar level of system reliability to that of the parallel arrangement can be achieved by using ring main feeders.

Operation of ring main network. In this system the primaries of distribution transformers form a loop. The figure shows the circuit diagram of ring main network used for distribution secondary of power to houses and small industries. The loop circuit starts from the substation bus bars makes a loop through the area to be served and returns to the substation.

In the exam you may have to interpret a diagram of the ring main similar to this one. The feeders in this system form a loop which starts from the substation bus bars runs through the load area feeding distribution transformers and returns to the. The various distributors are connected to points a c and d of the feeder. Figure 3 parallel feeder system.

Ring main connection schemes of distribution system in this system the feeder closes on itself i e. 11kv distribution ring main network. The single line diagram of ring main system is shown in figure 7. It forms a complete ring and hence the name ring main system.

2 3 2 ring main system. Every consumer has redundant supply in ring main distribution system. Go back to distribution feeder systems 3. Ring main electrical power distribution system.

An rmu is a ring main unit a type of switchgear used to connect distribution transformers to an underground secondary distribution 11 kv in the uk cable ring main system. In this system the primaries of distribution transformers form a loop. The drawback of a radial electrical power distribution system can be overcome by introducing a ring main electrical power distribution system. This usually results from the growth of load supplied by a parallel feeder where the cabling has been installed along different routes.

The loop circuit starts from the substation bus bars makes a loop through the area to be served and returns to the substation.