Bch Dol Starter Circuit Diagram. Direct on line starter wiring diagram. Circuit diagram for dol starter with hold on contact the circuit breaker is used for protection against short circuits while the overload relay protects the motor from overloading.
In the below dol starter wiring diagram i shown a molded case circuit breaker a magnetic contactor normally open push button normally close push button switch thermal overload relay motor trip indicator and 3 phase motor. The above fundamental data is used to design the dol starter for larger size high voltage motor. Working principle of dol starter.
The contactor is used for starting and stopping the motor where the green and red buttons are connected.
The dol starter is made of a circuit breaker or mccb or fuse an overload relay and contactor or coil. What is dol starter. Dol starter or direct online starter is the most simple method to start a low capacity three phase motor. Circuit diagram for dol starter with hold on contact the circuit breaker is used for protection against short circuits while the overload relay protects the motor from overloading.
