Ring Main Unit Pdf

The extension transforms the rmu tobecome a 4 way or a 5 way respectively.

Ring main unit pdf. Different combinations of these primary switching devices within the unit are commonly used. The extended unit has a separatetank from the main unit. Ring main unit rmu is a compact enclosed and sealed type of switchgear used for medium voltage power distribution. It is available in 18 different configurations suitable for most switching applications within the range from 6 to 40 5 kv.

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. 11kv ring main unit with 3 lbs and 1 cb. A complete switchgear means assembly of required switching devices protection device as well as metering device. Rmu is an all in one solution and is safe easy to install and maintenance free switchgear helping the utilities improve reliability uptime of the network and reduce the operational costs.

These are utilized for medium voltage power distribution. Marketing launch of the fi rst rm6 compact with integrated insulation. The ring main unit is an innovative solution that makes it easier to manage the numerous challenges of electrical distribution. Rmu of different voltage mostly 12 kv and 24 kv and current ratings are.

Medium voltage mv sf6 insulated ring main unit for secondary distribution up to 40 5 kv 630a safering is a ring main unit rmu for the secondary distribution network. It is a complete switchgear in itself. You see complete switchgear simply means assembly of needed switching devices. The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers.

A ring main unit rmu is a totally sealed gas insulated compact switchgear unit. Ring main unit is a compact sealed and enclosed type of switchgear. It s complete switchgear in itself. It also includes a protection device and a metering device.

The below figure shows the rmu with 3 incomers and 1 outgoing feeder to distribution transformer. 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. Creation of the rm6 1 functional unit. Contents 1 introduction 4 introduction to sfa rm 4 a sfa rm solution 4 b quality management 4 c quality checks and tests 4 d environmental precision 5 2 sfa rm in network 6 3 application.

Ring main unit long experience 1983. Creation of the network point integrating the rm6 and telecontrol. Ring main unit is a compact gas insulated switchgear cubicle equipped with sf6 switch disconnector and sf6 circuit breakers.