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Bridge crane main disconnect switch

Dec 05, 2019
Maintenance and inspection of bridge crane electrical equipment should generally be performed under power failure. Therefore, there should be isolation switches or other isolation measures between the electrical equipment and the power supply grid.
 
When the disconnector is in the disconnected state, there must be an effective disconnection distance and a clearly visible disconnection point, so that maintenance personnel can visually confirm that the main power circuit is indeed disconnected. In particular, it should be pointed out that when the air switch and the iron shell switch are in the disconnected position, there is no obvious disconnection point, and they cannot be used as disconnectors.
 
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