Delta connection Motor phase protection circuit


Posted on Dec 11, 2010

Delta connection Motor phase failure protection circuit as shown in FIG. Its protective role is as follows: The three resistors R, ~ R3 connected as an artificial neutral point


Delta connection Motor phase protection circuit
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- when the motor phase failure, this neutral point offset occurs, relay KA is energized, normally closed relay contacts off contactor coil KM circuit. KM loss of power release motor circuit knock off the main circuit, the motor M is stopped.




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