Reasons for the burning out of the hottest lifting

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The reasons for the burning out of the lifting motor are

1. In addition to the lack of phase, the reasons for burning the motor are

a, and the load is too heavy

b, the motor bearing is damaged

c. The brake is not working. During operation, whether it is disengaged or the electromagnetic coil is in poor contact, resulting in sometimes power failure and locking the brake drum

2. Cause of phase loss:

oxygen index according to GB8624 (1) 997 version standard

a. The contactor contacts are frequently started, ablated quickly, contact spring, plastic burning deformation at the contact, and other common faults 6: these will make the contact position insufficient, resulting in phase loss

b, the fuse is too small, causing heating, burning out and phase loss

c, phase loss caused by poor power contact

d, poor contact of motor incoming line

e. installing automatic air switch and thermal overcurrent protector with high sensitivity, and installing phase loss controller can effectively prevent twists and turns

3. The phase failure protector is very effective for the protection of phase failure. Once phase failure occurs, it can immediately disconnect the contactor. The price is not expensive, usually within 40-50 yuan. Generally, these 8 items can be output, and the original control circuit starting line is completed by passing it through a group of normally closed contacts. (end)

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