After a week of starting the motor with a soft start, the motor burns, what is the reason?

If the motor soft start cabinet fails to protect, it means that your parameter setting is unreasonable, or even the function setting is wrong.

1. Soft start is used to start the motor to prevent too much starting current from impacting the power grid when starting. The soft-start device is only active during the start-up process.

2. Motor burning prevention is the responsibility of the motor’s overload protection device. The simplest fuse is generally a thermal resistance. But the general soft starter can be achieved.

3. The motor still burns, indicating that your circuit design is unreasonable. The configuration of the device is not reasonable. Or not consider overload protection at all. I thought that as long as it was installed, it would provide overload protection. In fact, it needs to be debugged first.

The role of the motor soft start cabinet:

1. Reduce the starting current of the motor, reduce the power distribution capacity, and avoid investment in capacity expansion;

2. Reduce the starting stress and prolong the service life of the motor and related equipment;

3. Smooth start and soft stop avoid the surge problem and water hammer effect of traditional starting equipment;

4. A variety of starting modes and a wide range of current, voltage and other settings can be adapted to a variety of load conditions;

5. Perfect and reliable protection function to more effectively protect the safety of motors and related equipment;

6. It can start/stop the motor smoothly without steps, avoiding mechanical and electrical shocks caused by traditional starting methods such as direct starting, star/delta starting, and auto-decompression starting;

7. It can effectively reduce the starting current and distribution capacity, and avoid investment in capacity expansion.

Classification of motor soft start cabinets:

1. According to the voltage

Low-voltage soft-start cabinet, high-voltage soft-start cabinet

2. According to the load

Fan soft start cabinet, water pump soft start cabinet, etc.

3. According to different load control methods

One for one soft starter cabinet, one for more than one soft starter cabinet, one use and one backup soft starter cabinet, dual use and one backup soft starter cabinet, etc.

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