THREE-POLE HIGH-VOLTAGE SF6 CIRCUIT BREAKER Russian patent published in 2017 - IPC H01H33/04 H02B1/50 

FIELD: electricity.

SUBSTANCE: three-pole circuit breaker contains skeleton from two parallel channels with elements of rigidity. Current transformers are mounted inside the inlets. The SF6 density sensor is located inside the tank casing. The poles are mounted on pads fixed to the channel bars of the frame with mounting holes for an additional support consisting of interconnected racks. Side walls are welded to vertical channels. On the one hand the carcass to the plate welded to the vertical beam and kerchiefs, and is attached to the wall of the closet of the actuator. To the side walls with an angle of 45°, the sloped channel is welded, inside which the gear train system is placed, the spring wire of disconnection. The inner cavity of the channel that hosts the transmission closed lids, one of which made window for observation. On the one side of the frame to the corner and to the channel are welded additional corners, which are made with holes for fastening the control cabinet on them. The bosses for grounding are welded to the supports on both sides. The lifting lugs are welded to the both sides of the channels. In one of the horizontal channels, the holes are made for cable ties from the control cabinet.

EFFECT: creation of an ergonomic compact three-pole high-voltage gas-insulated circuit breaker in which, by using support elements with the same mounting holes connected to the carcass channels, the switch is unified and a series of switches with different heights and mounting holes is created with the same frame.

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