How to judge the electric hoist？

How to judge whether the electric hoist meets the standard?

1. The lifting chain should be equipped with guiding devices to assist the normal meshing of the chain with the lifting sprocket and the cruise ship. The end of the hoisting chain that is unstressed should be provided with a restriction device that prevents the hoisting chain from being unwound from the lifting sprocket.

2. The rated lifting capacity of the electric chain hoist should be marked in the prominent position of the lower hook. There should be a locking device to avoid accidental slippage of the rigging. The lower hook should be able to rotate 360 degrees and turn flexibly.

3. The motor winding should be able to withstand the withstand voltage test for 1 minute without the insulation breakdown.

4. For motors with rated power not more than 1.1KW, the leakage current during the test should be no more than 10 mA. For motors with rated power greater than 1.1 KW, the leakage current during the test should be no more than 20 mA.

5, the mechanical performance test of the hook should comply with national regulations, the lifting chain should not be lower than the provisions of GB/T10051.1.