The motor is our commonly used equipment, during the working process of the motor, sometimes the motor suddenly stops, then restarts after a while  but after starting, it only turns for a few minutes, then stops for a while can start again, so on. Sometimes when starting, the motor speed is very slow, it stops after working for a while. If this fault is found dealt with in time, it is easy to burn out the components of the motor control system for a long time. Speed motor manufacturers today to cure this problem!

Thermal relay is a kind of relay that uses the thermal effect of current to protect the motor long-term overload. The thermal relay has a button that can choose manual reset automatic reset. In the incubation equipment, we set the thermal relay to be automatically reset. When the load carried by the contactor works under overload conditions for a long time, the thermal relay can disconnect the contactor wire package power supply within the effective time protect the motor. However, when the self-locking mechanism in the thermal relay cools, the control switch in the thermal relay sends the power to the contactor to drive the motor to work, then the system returns to normal, but after a few minutes, the thermal relay heats up again to disconnect the contactor power, the motor stops again, so on.

The cause of the fault is in the thermal relay, so what is the cause of the protective action of the thermal relay? We know that load phase loss phase bias is the main cause of thermal relay operation. The direct detection method is used, the machine is turned off, each device is measured judged according to the principle back to front, the motor to the user's power knife fuse, the control device that may cause phase loss poor contact is replaced tightened.

Speed motor manufacturers believe that the capacitor is broken the motor turns short circuit may cause the motor to turn when it does turn. Therefore, when you encounter a problem, you must first find a problem, find a way to solve it well through the problem. Today's knowledge is here, if you need motor products to give us a call!