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Step-down autotransformer rotor excitation frequency starting circuit – Circuit Schematic
Step-down autotransformer rotor excitation frequency starting circuit
Circuit shown in Figure 3-187. When you start, then people start auto ZQB step-down transformer. After a period of delay, ZQB out of operation, the motor incre...
Synchronous motor full voltage start-up circuit – Circuit Schematic
Synchronous motor full voltage start-up circuit
Circuit shown in Figure 3-186. Figure, os for the isolation switch; QF vacuum circuit breakers; YR line for the circuit breaker coil; YA circuit breaker closin...
Thyristor AC torque motor speed control circuit 2 – Circuit Schematic
Thyristor AC torque motor speed control circuit 2
Circuit shown in Figure 3-181. Main circuit consists of three thyristor Vi-V3 components. Trigger circuit single-junction transistor relaxation oscillator. Spe...
Two motor speed control circuit and the main level indicating circuit – Circuit Schematic
Two motor speed control circuit and the main level indicating circuit
Circuit shown in Figure 3-178. It withered speed torque motor for continuous casting machine, the circuit from the main circuit, trigger circuit, manual and au...
V-shaped torque motor speed control circuit – Circuit Schematic
V-shaped torque motor speed control circuit
Circuit shown in Figure 3-177. It uses two single-phase voltage regulator and connected to a V-shaped, single-phase regulators when two concentric series of ti...
Three phase torque motor speed control circuit – Circuit Schematic
Three phase torque motor speed control circuit
Circuit shown in Figure 3-176. This adjustment method, the motor can run at equilibrium, adjustment range and relatively wide. But requires a three-phase volta...
Single-phase torque motor speed control circuit 2 – Circuit Schematic
Single-phase torque motor speed control circuit 2
Circuit shown in Figure 3-175. Regulator connected between one phase and neutral. It applies to the rated voltage of 380V torque motor. This method than the de...
A control circuit reversing braking and reverse grading speed control function – Circuit Schematic
A control circuit reversing braking and reverse grading speed control function
Circuit shown in Figure 3-168, which uses the controller SA grading speed and reversing control; reverse brake connected to the rotor circuit overcurrent relay...
Frequency sensitive rheostat manually start reversing circuit – Circuit Schematic
Frequency sensitive rheostat manually start reversing circuit
Circuit shown in Figure 3-166. It uses the button control. When start forward, press SB], the motor rotor string frequency sensitive people rheostat RF operati...
Frequency sensitive rheostat for manual and automatic way starting circuit – Circuit Schematic
Frequency sensitive rheostat for manual and automatic way starting circuit
Circuit shown in Figure 3-164. The circuit can be manual and automatic two ways. During startup, KA normally closed contact relay FR hot heating element shorte...
Time to start reversing relay control circuit – Circuit Schematic
Time to start reversing relay control circuit
Circuit shown in Figure 3-162. in graph. SBi is forward the start button, SBz to reverse the start button, SB3 for the stop button. Start switching resistance ...
Single-phase motor automatic intermittent operation control circuit – Circuit Schematic
Single-phase motor automatic intermittent operation control circuit
Circuit shown in Figure 3-16. It uses 555 IC A as the control element; capacitive step-down circuit; bidirectional thyristor V between the motor control interm...
Forward and reverse running short brake circuit – Circuit Schematic
Forward and reverse running short brake circuit
Circuit shown in Figure 3-154. Figure, KM3 braking contactors. Shutdown, you can disconnect the os. At this time, KM3 was electric pull its normally open conta...
Single-speed motor excitation power from a braking circuit – Circuit Schematic
Single-speed motor excitation power from a braking circuit
Circuit shown in Figure 3-151. Figure 3-151 (a) of the capacitor banks connected into shape, it applies to shaped or Y-connected motor; Fig. 3-151 (b) of the Y...
Single-phase motor energy consumption of the two brake circuits – Circuit Schematic
Single-phase motor energy consumption of the two brake circuits
Circuit shown in Figure 3-150. When shut down, the contactor KM1 released. KMz pull, 220V AC power supply through the diode VDi, VD2 rectifier, the motor prima...
Dynamic braking circuit control thyristor – Circuit Schematic
Dynamic braking circuit control thyristor
Circuit shown in Figure 3-148. The circuit eliminates the need for step-down transformer, using thyristor for brake control, for small capacity asynchronous mo...
One of the positive and negative brake circuit to operate energy – Circuit Schematic
One of the positive and negative brake circuit to operate energy
Circuit shown in Figure 3-144. The circuit for the automatic control of dynamic braking circuit using the time relay KT control system up time, dynamic braking...
The brake a little dynamic braking circuit – Circuit Schematic
The brake a little dynamic braking circuit
Circuit shown in Figure 3-143. The line not only make the braking effect of the motor is in the normal shutdown, and jog through the process and has a good bra...
Nine one-way operation of the dynamic braking circuit – Circuit Schematic
Nine one-way operation of the dynamic braking circuit
Circuit shown in Figure 3-141. The line autotransformer voltage starting, dynamic braking. Figure, SBi buck start button, SBz the stop button. Buck start-up ti...
Solid-state relays control the motor forward and reverse operation circuit – Circuit Schematic
Solid-state relays control the motor forward and reverse operation circuit
Circuit shown in Figure 3-14. SA switch placed in the work position, the motor is transferred; SA placed bit is set, reverse the motor. Drawing, over-voltage p...