Differential protection of high-voltage motor
Release time:
2022-12-19
The current flowing in the same direction and the same size at both ends of the generator of the differential protection device of the voltage motor is called the through current, while the current flowing in the opposite direction is called the non through current.
The current flowing in the same direction and the same size at both ends of the generator of the differential protection device of the voltage motor is called the through current, while the current flowing in the opposite direction is called the non through current.
As the main protection, the generator ratio braking differential protection distinguishes the normal state, fault state and abnormal operation state of the protected components by taking the non penetrating current as the action value and the penetrating current as the braking value. Under normal operation, the through current is the load current, and the non through current is zero theoretically. Internal interphase short circuit state, non through current sharply increases.
