Cable tray bridge is divided into groove type bridge, tray type bridge and ladder type bridge, grid format and other structures, by the bracket, bracket arm and installation accessories and other components. In the process of using the bridge, there are many places to pay attention to, such as bridge grounding there are many places to pay attention to. So what are the precautions for cable tray grounding.

The specification of cable tray grounding: 　　According to the rules of the project, its total width of 50 ~ 1000mm, height to width ratio of 30 ~ 200mm, length is generally 2000mm, large span bridge is generally 6000mm. according to the field direction, will be straight to the bridge and a variety of types of curved through the type of bridge based on the coupling plate and supporting equipment screws connected together.

Cable tray grounding equipment is divided into two kinds of red: this is the middle of the section of the electrical equipment pass; this is the electrical equipment pass after the cable tray system and grounding equipment.

Grounding equipment specifications: there is no doubt that the grounding equipment is to avoid personal high voltage electric shock.

Bridge

In fact, grounding equipment to avoid serious damage to machinery and equipment and roadway, to avoid electrostatic induction damage and to ensure that the power supply system all normal operation. Grounding protection to ensure life and avoid simple contact with electrical accidents and will not normally induction of electricity, accidents will be induced by a portion of the exposed conductivity of the machinery and equipment will be electrified to open the grounding equipment.

In the cold and wet natural environment, such as rainy temperatures, the body’s characteristic impedance is reduced, it is very easy to suffer from high-voltage electric shock, grounding equipment is to say to avoid high-voltage electric shock is a good way. Grounding equipment of the power supply system, also known as operational grounding, operational grounding of the grounding resistance requirements are not large. In the whole process of electrical equipment, all the plastic shell of electrical equipment are necessary to take into account the grounding equipment problems. Cable tray as laying cables and protect the cable of the key shell, should also take into account the grounding equipment problems.

This article is edited by China Steel Pipe.