Three common questions about ring main units:

1. The meaning of R cabinet R cabinet. K cabinet. D cabinet

The meaning of ring main unit in power design:

(1) R cabinet represents the fuse cabinet, K cabinet is the load switch cabinet, D cabinet and B cabinet are fixed circuit breaker cabinets, and the cabinet type is the same as the load switch cabinet.

(2) F cabinet: incoming auxiliary cabinet, different from K cabinet, this kind of ring main units don’t have no load switch.

(3) M cabinet: measuring cabinet.

2. Series of high-voltage ring main units

Classification of high-voltage ring main units: ring main units have a rich variety of products, and the common ones are HK-10.MKH-10.8DH-10.XGN-15 and SM6 series products.

3. The working principle of the high-voltage ring network cabinet

The high-voltage ring main unit can be divided into air insulation and SF6 gas insulation according to the insulation structure. It is generally composed of three compartments, including two ring cable entry and exit compartments and a transformer circuit compartment.

High-voltage ring main unit is a popular term, generally refers to the SF6 load switch and SF6 load switch + fuse combination electrical appliances used in the ring main unit line or terminal.

The SF6 load switch is an excellent load switch with long life in addition to electricity and strong breaking force. It has the same advantages as vacuum load switches. It is also easy to achieve three working positions (connected, disconnected and grounded), and small current (inductance), Capacitor) breaking, strong resistance to severe environmental conditions, etc., suitable for use in urban and rural medium-voltage distribution equipment.