There is electricity on the wire rope of the tower crane. . .

This is the phenomenon of electrostatic charging. My project has experienced twice, and both tower cranes are close to high-voltage electricity or in the area between two high-voltage electricity, which is easy to cause static electricity. Depending on the surface area of metal machinery, the metal surface area of tower crane is large, so a lot of static electricity is accumulated and released on the hook, causing electric injury to people. My hand was burned, too. Ha ha, although it is not serious, it causes psychological pressure to people, and workers are reluctant to touch the hook (by the way, the tower crane driver is fine). When the source of static electricity, that is, high voltage electricity, cannot be cancelled (it will not be cancelled generally. How awesome the power supply bureau is When my project first appeared, it was abandoned wires, but the power supply bureau just ignored it. There was nothing to do! ), just add an insulating rope at the end of the hook, which is no problem to bear the load, but it is more expensive. Fortunately, it was less than a few meters, hehe, and then it was okay. The safety supervision station will check or accept it, and it will not affect it after it is clearly explained.