How to choose the trough type cable tray?

2023-12-01

The trough cable tray and its supports and hangers are actually used in a corrosive environment, and should be made of corrosion-resistant rigid materials, or anti-corrosion treatment, and the anti-corrosion treatment method should meet the requirements of the engineering environment and durability. In the section with fire protection requirements, the cable tray can be composed of fire-resistant or flame-retardant plates, nets and other materials or semi-structures in the cable ladder frame and tray.

Classification and production process of bridge frame

2023-11-07

In addition, the tray-type cable tray is another cable tray with a wide range of uses. Its structure is very simple, and its weight is much lighter than other types of cable trays. If a large span is required, a large-span cable tray made of fiberglass materials is generally used. This kind of cable tray has a very long service life, is light in weight, and is easy to cut.

What conditions should the grounding points of the cable tray system meet?

2023-11-07

When it is allowed to use the cable tray system to form the grounding trunk circuit, the following requirements should be met. The connection resistance between the ends of cable trays should not exceed 0.00033 ohms, and the insulating coating should be removed from the grounding holes. In the 1KV and below neutral point direct grounding system, the grounding of the powered equipment is connected to the system neutral line grounding. When equipped with a dynamic cut-off power supply device, the metal cross-sectional area of the bridge frame in the step direction should not be less than the specified value.