How are ring main units installed?

The ring main unit configurations are delivered from the factory for installation. Repetitive tests are performed out on every unit or modules before dispatch. Plus, no extra tools are needed for installing the equipment. Lower and upper front cover has a thickness of 3mm aluminum that is covered with a polycarbonate foil.

Where is ring the main unit used?

So ring the main unit is now widely used in residential buildings, public places, factory buildings and other buildings, especially in medium and small capacity compact stations.

What is ring main unit construction?

A ring main unit construction is made up of four parts. The switching room consists of several functional circuits. It includes load switches and ground switches. These are sealed in the busbar and metal housing between them. Three cold welds the shell rolled steel plates. Every functional loop is composed of a ground switch and a load switch.

How many holes are there in the ring main unit?

There are four rectangular assembly procedure holes in the rear and upper parts of the switch room. The observation window is set up on the front part of the ring main unit to check the position of the grounding switch. The rear part of the ring main unit components is geared with an explosion-proof device.

Are air insulated ring main units a good choice?

These ring main units are also ideal for rural and industrial settings. Some oil insulated RMU manufacturers provide non-extensible, extensible and modular options that can be incorporated even in the most extreme conditions. Air insulated ring main units on the other hand can work smoothly even reducing a number of its components.

What is SF6 ring main unit?

The sf6 ring main unit refers to the ring distribution network, that is, the power supply main line forms a closed ring, and the power supply supplies power to the ring main line, and then distributes power through the high voltage switch from the main line.