Requirements for installing surge protectors in elevators

According to the standard elevator power distribution cabinet, a surge protector must be installed in this position, and the elevator is responsible for carrying people and objects, which is very important. The lightning protection of the elevator power distribution system should be paid more attention.

In the actual lightning protection acceptance project, many units have failed the acceptance of the surge protector in the elevator machine room. So what kind of surge protector meets the requirements of the lightning protection standard for the elevator machine room?

In the lightning protection of the building power distribution system, the elevator machine room belongs to the three-level lightning protection or the final level of lightning protection (the total power distribution level 1, the floor power distribution level 2, and the elevator machine room level 3).
Because the surge protector is installed to protect the elevator motor controller and other equipment, the residual voltage or protection level of the surge protector installed in the elevator cannot be high. If the residual voltage is high, the lightning protector will also play a role, but the elevator Still struck by lightning.

According to the standard elevator lightning protection and surge protector, products with a protection level of Up: 1.2KV should be selected (the residual voltage value will be slightly lower than the protection level value), and the protection level of the elevator surge protector will also be paid attention to in the lightning protection acceptance of the Meteorological Bureau , which is the Up value.
Therefore, it is necessary to pay attention to this point when selecting lightning arresters for elevators.