![]() ![]() If the required gas density is not sufficient, safe operation cannot be guaranteed. ![]() Gas density is an important operating parameter for SF6 insulated MV equipment. The cable test cover is safely interlocked and cannot be opened unless the load break switch is earthed. Operators can simply conduct the cable testing through plug-in type connectors after opening the cover. Ring main units offer a safe way of cable testing from the easily accessible cable testing compartment on the front panel. Relays used for over current, under and over voltage protection. CTs can be used for giving the input of current to relays which then senses a normal or fault condition according to the current. CT/PTįor the purpose of monitoring current and voltages, current and potential transformer are used. Have a look at it to grab more information about circuit breakers. □□ We also have written a blog titled Selecting the Right Circuit Breaker and Its Type. ![]() This blog describes the importance of Ring Main Unit in power distribution and its comparison with other types of switch gear and in which type of power distribution application using ring main unit can be cost effective. RMU is a completely sealed system with a stainless-steel tank, gas tight metal enclosure, containing all the live parts, switching-disconnector, earth switch, fuse switch, the circuit breaker. RMU can be supplied in various configurations suitable for most switching applications in 24 kV distribution networks. RMU is an extensible and non-extensible ring main unit for the secondary distribution network. This type of switchgear is used for medium-voltage power distribution. Ring main cables enter and leave the cabinet. The metal enclosed unit connects to the transformer either through a bus throat of standardized dimensions or through cables and is usually installed outdoors. It contains different types of switches for different purposes for example some switches connect with load, some feed a distribution transformer etc. ![]() In an electrical power distribution system, a ring main unit (RMU) is a factory assembled, metal enclosed set of switchgear at the load connection points of a ring-type distribution network. Published Date: Last updated: Abdur Rehman What is a Ring Main Unit? ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |