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ABB HV Cabinet Five Anti-mechanical Lock
Jul 11, 2018

Blocking 1. When the circuit breaker door is opened, the handcart cannot be swung to the operating position. As shown in the figure below: The circuit breaker handcart allows the operation slot A1 and the door panel unlocked plug-in A2, cooperate with the screw rod to realize when the circuit breaker door is opened, the hand crank can not be placed in the hand-operated jack, and the hand-crank can not be operated. 


Blocking 2. The circuit breaker door cannot be opened when the handcart is in the running position or in the middle position. As shown in the figure below, the handcart position is linked to the circuit breaker door locking device B1. When the handcart is in the working position or the intermediate position, the locking device B1 is interlocked with the circuit breaker door locking device B2, and the door of circuit breaker cannot be opened.


Blocking 3. When the cable compartment door is open, grounding cannot be operated. As shown below. When the cable compartment door unlocked plug-in C1 is inserted into the slot C2, the grounding switch locking pin C3 is retracted to the left to be hidden, and the grounding lever can be inserted into the grounding knife operating hole to allow operation.


Blocking 4: When the grounding knife is opened, the cable compartment door and the cabinet rear door cannot be opened. As shown in the figure, when the grounding is opened, the cable compartment door locking device D1 moves downward to interlock with the D2 on the cable compartment door panel, so that the cable compartment door cannot be opened. The rear door is similar to this, so that D3 and D4 interlock with each other and cannot open the rear door. The door can only be opened after the grounding knife is closed.


Blocking 5: The grounding knife gate can only be closed when the hand truck is "tested/isolated" or connected to the switchgear. As shown in the figure: When the handcart is only in the test/isolation position or is pulled out, the side panel of the handcart does not hinder the locking device E2 from ejecting. When E2 pops up, the slider can be pressed to allow operation of the grounding switch.

微信图片_20180709103124.jpg


Blocking 6: When the grounding switch is closed, the handcart cannot move from the “test/isolation” position to the operating position. As shown in the figure, when the grounding knife is in the closing position, G2 is in the pop-up state to the top of G1, and G1 is moved to the right. When the screw H is slightly rotated, the screw and G1 will joggle together, causing the screw H not rotate. Handcart cannot move.



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