Henan Weihua Crane is a professional manufacturer of all kinds of cranes. It also attaches great importance to the safety of cranes. Whether it is in the production process, during the installation process, during the commissioning process or even during the process of use, there are a series of inspection and inspection work. , do a safe production.
The electrical equipment in the crane is an important part of the control crane. The main problem with this equipment is to avoid charging, which not only causes personal injury, but also affects the working effect. Therefore, before the equipment is used, it must be grounded protection and zero protection.
Grounding is the use of a grounding device to make a reliable electrical connection to the earth with a metal casing or frame that is not energized under normal conditions. Since the grounding resistance of the grounding device is small, the voltage of the metal casing to the ground is greatly reduced, and even if there is electric shock, the amount of overcurrent of the human body is reduced, and the damage is reduced.
Zero connection is to connect the metal casing or frame of the electrical equipment directly to the neutral line of the power supply. If the equipment is short-circuited or damaged by electrical insulation, the equipment casing is charged. Because the neutral line resistance is small, the short-circuit current is large. Forcing the leakage protection in the circuit to play a role in cutting off the faulty equipment power supply also has a certain protective effect.
Therefore, the electrical equipment of the crane should avoid the problem of electrification. You can do both of the above. If you have any doubts about this, welcome to contact Henan Weihua Crane.
