Isolation operating mechanism under 12kV environmental protection cabinet (air insulated without SF6 gas)

The isolation operating mechanism under the VHK-J12 environmental protection cabinet is equipped with a VHK-J12 circuit breaker reclosing spring operating mechanism, and the isolation part is equipped with a RNHSG-07 compression spring isolation operating mechanism. The isolation machinery is a forward type, and the V operating mechanism is an inverted type, using a single rod mechanical structure to achieve interlocking with the lower door. Only when the main circuit is in the open state and reliably grounded can the interlocking return position open the lower door. The overall structure of the mechanism is compact, and the operation interlocking meets the five prevention requirements.
The operating mechanism complies with the relevant requirements of standards such as GB1984-2014, GB/T1022-2020, GB3804-2017, GB3906-2020, etc.

Operation of opening and closing the mechanism

Power transmission operation:
①. Close the door; ②. Insert the handle into the grounding operation hole of the G mechanism and operate counterclockwise to separate the locking/grounding of the lower door; ③. Insert the handle into the isolation operation hole of the G mechanism and operate counterclockwise to close the isolation switch; ④. Insert the handle into the energy storage operation hole of the V mechanism and operate clockwise to store energy in the circuit breaker; ⑤. Press the green button on the V mechanism to close the circuit breaker switch,
Power outage operation:
①. Press the red button on the V mechanism to open the circuit breaker switch; ②. Insert the handle into the isolation operation hole of the G mechanism and operate clockwise to open the isolation switch; ③. Insert the handle into the grounding operation hole of the G mechanism and operate clockwise to close the grounding switch; Only after the power outage and grounding are completed, can the lower door be opened.

Product Parameters

Installation dimensions