What Are The Classifications Of Ring Network Cabinets?

At present, there are many types of RMU products, such as HK-10, MKH-10, 8DH-10, XGN-15 and SM6 series.

Ring network cabinet is a group of high-voltage switchgear installed in steel metal cabinets or electrical equipment made of assembled spaced ring network power supply units. Improve power supply parameters and performance as well as power supply security and other advantages. It is widely used in distribution stations and box-type substations in load centers such as urban residential quarters, high-rise buildings, large public buildings, factories and enterprises.

The ring main unit is generally divided into three types: air insulation, solid insulation and SF6 insulation, which are used for dividing and closing load current, breaking short-circuit current and transformer no-load current, charging current of overhead lines and cable lines at a certain distance, and playing the role of control and protection. , is an important switchgear for ring network power supply and terminal power supply. In the cabinet, the load switches equipped with air insulation mainly include gas-generating type, compressed air type, and vacuum type, and the load switch equipped with SF6 insulation is SF6 type. Since the SF6 gas is enclosed in the shell, the partitions formed by it are invisible. The load switch in the high-voltage ring network cabinet generally requires three positions, that is, the load is cut off, the circuit is isolated, and it can be reliably grounded. Gas-producing, gas-compressing and SF6-type load switches are easy to achieve three-station, and vacuum arc-extinguishing type can only be interrupted, not isolated, so the general vacuum load ring network switchgear adds an isolation switch before the load switch to Form an isolation fracture.