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The reason why the tower crane phase loss protector does not work
Why does the tower crane slip hook? The reasons are mainly as follows:
1. The connection bolts of the motor rotor and stator coil have poor ablation and contact.
2. The gearbox gear is broken, and the fixed gear bolts are loose.
3. The tower crane phase loss protector does not work.
4. The fixing screws of the contactor power supply inlet and outlet lines in the tower crane distribution box are loose, the connection bolts of the terminal board are in poor contact, and the main contacts of the contactor are in poor contact.
