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Motor voltage reducing starter 2

2016-09-01 16:08  
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Motor voltage reducing starter 2
The motor voltage reducing starter circuit is composed of regulated power supply circuit, delay control circuit and control implement circuit, it is shown in the figure 8-56. The regulated power supply circuit is made of fuses FU1, FU2, stop button S1, capacitors C1, C2, heat relay KR's normally closed contact, resistors R1, R2 and steady voltage diode VS. The delay control circuit consists of starter control button S2 (S2-1-S2-3), capacitor C3, potentiometer RP, transistor V, TRIAC VT and intermediate relay KA. When stop button S1 is pressed, the whole circuit is power failure and it stops working.