Protection control system for direct starting of motor
A protection control and motor technology, applied in emergency protection circuit devices, electrical components, starter parts, etc., can solve the problems of power grid impact, motor damage, control device circuit operation and difficulty for maintenance personnel, etc., to achieve easy operation. And the effect of maintenance and reliable operation
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[0046] The embodiment of the present invention will be described in detail with reference to the drawings and examples below.
[0047] see also Figure 1 As shown, in some embodiments of the protection control system for direct starting of the motor, it includes a main circuit, a driving circuit, a sampling circuit and a protection control device for controlling the aforementioned circuits and modules. The main circuit is wired and correspondingly connected with the main circuit breaker QF, the protection control device, the contactor and the switch K3, and then connected to the motor. The upper terminal of the motor is connected with the contactor KMA of the main circuit. The driving circuit comprises a relay, a switch input circuit DI and a switch output circuit DO, the main circuit is connected with a built-in transformer, and each terminal of the built-in transformer is correspondingly connected with the control circuit; The protection device comprise a controller, wherein that...
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