132HC Mast Section Inspection and maintenance of electrical equipment
1. Whether the bolts of each part are fastened and whether the sign of outgoing line is correct. Whether the rotor rotates flexibly.
2. The DC resistance error of tower crane shall not exceed 4% of the average value.
3. The insulation resistance to ground and interphase shall not be less than 5 megohm.
132HC Mast Section
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2、 Inspection of explosion-proof switch of tower crane
1. The switch stops and delivers power correctly, with short circuit and reliable overload action.
2. The switch handle and indicating device are in correct position and flexible action under various working conditions.
3. The action relationship between various interlocking, locking, handle and button is clear.
4. The indication of all kinds of indicator lights is consistent with the state of handle and button, and the color is correct.
132HC Mast Section
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