Main features:
The SRM6-12 fully enclosed and fully insulated gas-filled ring main unit switchgear produced by our company has passed the tests conducted by the National High Voltage and Low Voltage Electrical Appliances Quality Supervision and Inspection Center. The product is widely used in the 10kv/6kV power transmission and distribution systems of the national power grid, and is a preferred product for various users' power distribution systems in urban and rural areas. 

The switch cabinet adopts the horizontal block unit mode and can be combined according to different purposes; it is divided into two major categories: fixed unit combination and expandable unit, meeting the flexible usage needs of various substations for compact switch cabinets.

The SRM6-12 fully enclosed fully insulated gas-filled ring network switchgear is a completely sealed system. Its electrical components and switches are enclosed within the stainless steel housing. The entire switchgear is not affected by external environmental conditions, thus ensuring operational reliability and personal safety. It also achieves maintenance-free operation. By selecting expandable busbars, any combination can be achieved, achieving full modularization. The expansion busbar is safely insulated and shielded, ensuring reliability and safety. The SRM6-12 fully enclosed fully insulated gas-filled ring network switchgear can also provide TV-type automated solutions, forming the concept of intelligent switches and significantly reducing on-site installation and commissioning work. 

The SRM6-12 fully enclosed and fully insulated gas-filled ring main unit switchgear is divided into non-expandable standard configuration and expandable standard configuration. Due to its combination of full-module and semi-module as well as its self-expandability, it possesses extremely special flexibility. 

Product main features
Technical description
The SRM6-12 fully enclosed and fully insulated gas-filled ring main unit switchgear is installed on a galvanized frame. The switch unit is located in the SF6 gas tank, which is made of corrosion-resistant and non-magnetic 3mm thick stainless steel plates.
The SF6 gas tank is a "sealed pressure system" and can operate for 30 years under normal working conditions. The normal working pressure of SF6 gas is 0.15-0.4 bar. The gas tank is equipped with a pressure release device to ensure that the gas can be released from the bottom or rear in case of excessive pressure.

Switch unit
The load switch adopts a coaxial rotating dual-breakpoint method. It is operated kinetically through the same operating hole and the sliding plate, so the switch can only be in one of the three states at any given moment: "closed, separated, grounded", completely avoiding misoperation.

Operating mechanism
The operating mechanism of the switch is installed at the front of the gas tank outside. It is treated with special processes to prevent rusting, making it convenient for manual operation and maintenance, and easy to achieve electric operation.