Product Overview
B N R M 6 - 1 2 series fully insulated and fully enclosed ring network switchgear is S F 6 gas insulated metal common box enclosed switchgear, which can be composed of modules such as load switch unit, load switch fuse combination electrical unit, vacuum circuit breaker unit, and busbar feeder unit. It adopts a series of advanced technologies and materials. It has excellent electrical and mechanical properties, is little affected by the environment and weather, has a compact size, is easy to install, is easy to operate, requires no maintenance, and has a flexible combination. The clear and intuitive design ensures simple and direct operation. Large feeder capacity, suitable for a wide range of wiring systems.。

Design statement
The BNRM 6-12 gas fully insulated and enclosed ring mains switchgear is mounted on a galvanized sheet metal frame and the switching units are housed in an SF 6 gas tank made of corrosion-resistant and non-magnetic 3 m m thick stainless steel plates. The S F 6 gas tank is a “hermetically sealed pressure system” and can be operated for 20 years under normal operating conditions. The normal operating pressure of the S F 6 gas is 0.015 to 0.04 MPa. The gas tank is equipped with a pressure relief device to ensure that the gas can be released from the bottom or rear of the tank in the event of excessive pressure.

Four core competencies
1. Operational safety. With the following safety measures, we can provide special security for users:
2. Reliable operation. Fully enclosed design, all 10k V switch and busbar charged body are sealed in 3m m stainless steel plate welded into the air box; with silicone rubber cable plugs, to achieve the cable head fully insulated and fully sealed so as not to be affected by dust, moisture, small animals and other external environment:
3. Economy.
4. Program flexibility。

Model Meaning

Model Meaning
1.BNRM6- 12-C/630DL means load switch cabinet, rated voltage 12kV, rated current 630A, right expansion, left cable inlet and outlet mode.
2.BNRM6- 12-CF/63O IR indicates that the load switch unit and fuse combination unit are combined, bus voltage 12kV, bus current 630A, left expansion, right cable in and out of the line mode.

Main technical parameters
 

Note: 1. Depends on the fuse rated current value; 2. Opens 1250KVA no-load transformer; 3. Depends on the high-voltage fuse;