1）断路器进行分、合操作各50次a. 试验时，只有当可移开部件处在工作

1) the circuit breaker performs, close operation 50 times <br>a test time, only when in the working member can be removed, test, removed position, the circuit breaker can be divided, closing operation;. <br>. B circuit breaker closed state, can not be used used used sliding operating handle; <br>2) times grounding switch 50 is operated <br>during the test, when the grounding switch is in the closing position, not removable member into the operative position; <br>3) and a removable insert member each 25 removal <br>a the test, when the removable test member in position within the earthing switch is not operating handle insertion hole;. <br>B earthing switch is in the open state, the closure panel and the rear panel can not be opened.

1) Circuit breakers for the separation, joint operation 50 times each<br>a. During the test, the circuit breaker can only be divided and closed when the moving part is in the working, test and removal position;<br>b. The circuit breaker is in the closing state, the hand truck handle can not be pushed and pulled the cart;<br>2) Ground switch operation 50 times<br>During the test, when the ground switch is in the closing position, the moving part cannot enter the working position;<br>3) Remove parts to insert and remove each 25 times<br>a. During the test, the ground switch operator's handle cannot be inserted into the operator's hole when the removable part is within the test position;<br>b. The ground switch is in a split state and the lower panel and rear seal cannot be opened.

1) Open and close the circuit breaker 50 times each<br>a. During the test, the circuit breaker can be opened and closed only when the movable parts are in the working, testing and moving positions;<br>b. When the circuit breaker is closed, the handcart can not be pushed or pulled with the handcart operating handle;<br>2) Operation of earthing switch 50 times<br>During the test, when the grounding switch is in the closing position, the removable parts cannot enter the working position;<br>3) Removable parts are inserted and removed 25 times each<br>a. During the test, when the movable parts are within the test position, the operating handle of the grounding switch cannot be inserted into the operating hole;<br>b. When the grounding switch is in the off state, the lower panel and the rear sealing plate cannot be opened.