Motor protector circuit diagram 6

Published:2011/6/8 3:55:00 Author:Lucas | Keyword: Motor protector | From:SeekIC

The motor protector circuit is composed of the current transformers TA1 ~ TA3, thermal relay KR, rectifier diodes VD1 ~ VD14, relays K1 ~ K3, start button S1, stop button S2 and AC contactor KM, the circuit is shown as the chart. After the the knife switch Q1 is turned on and the start button S2 is pressed, 380V AC voltage between the phase line L2 and L3 is added to the AC contactor KM by the normally closed contacts of relay KR, stop button S1, diode D13 and start button QO, and KM will operate normally, and its normally open contacts ( action contacts) KM1 and KM2 are connected, at this time if the knife switch Q2 is connected, the motor M will be energized operation. VD1 ~ VD14 use 1N4007 silicon rectifier diodes. K1 ~ K3 select JRX-13F 12V small relays. KM uses 220V or 380V AC contactor. HL uses 220V, 60W incandescent bulb.



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