How to distinguish between start and run capacitors? And reversing control how

Today let's chat single-phase capacitor motor. How to distinguish between start and run capacitors? How positive &negative control wiring?

dual single-phase capacitance motors

general with single capacitance under 500 w, 750 w above with double capacitance. Two: common orthogonal l-type connection single-phase dual single-phase capacitor motor and Y type double capacitor motor, the internal winding, though different, but the connection principle is similar. L wiring, for example, we first look at the circuit diagram.

circuit diagram

2 winding form L, a primary winding is a pair of winding. Two capacitors in parallel, a start a run capacitors, starts a capacitor in series centrifugal switch. The two capacitor how to distinguish?

capacitor

these two are non-polarity capacitance, CBB60 for running capacitor, smaller capacity, CD60 for startup capacitor, slightly larger capacity.

as shown in the above, each winding is start winding, just at the beginning of the start winding and start capacitor in series, after the completion of the motor, centrifugal switch will disconnect startup capacitor, finally only running a capacitance.

the working principle of the centrifugal switch: motor starts, motor speed to achieve rated speed, reaction by centrifugal hammer, micro switch off contact makes startup capacitor.

positive &negative wiring

positive &negative wiring principle: because start later start centrifugal switch capacitance and this part is useless, we can put this part out. Blue, as shown in the above zero for two winding public side, when the red wire running capacitor upper hypothesis for the forward, the line of fire when running capacitor bottom is the reverse.

with the wiring diagram

this is the positive and negative transfer of electric chart, some friends say look not to understand, but which two points to connect power we can still see it. As long as the power of the, the rest is to adjust the location of the two connection piece.

are switching method: the Z2 and U2 with connector nipple, U1 and V1 short

the switching laws: the Z2 with connecting piece and short U1, U2 and V1 sub

below red circle, connecting piece is a sideways with even one is vertical.

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