Cable tray machine is suitable for laying power cables and control cables overhead indoor and outdoor in general industrial and mining enterprises. It can also be used in telecommunications, broadcasting and television departments to be installed indoors or outdoors. However, there have been differences in the definition of various accessories. Therefore, in order to standardize the entire cable tray market, the relevant departments announced the standard for cable tray accessories some time ago. It is also very important to purchase cable tray machine accessories.
It is recommended to purchase high-quality, compression-resistant cable tray machine accessories. Conventional accessories include: tees, elbows, reducers, screws, buckles, support arms, booms, cross arms, connecting pieces, grounding wires and so on.
Commonly used electrical accessories include cable terminal junction boxes, indirect cable junction boxes, connecting pipes and terminals, steel wire slots, and cable trays. For vibration locations, a spring coil should be installed at the connection of the grounding part. The bridge system should have reliable electrical connections and be grounded. The following requirements shall be met when it is allowed to use cable tray machine to form a grounding trunk circuit for the bridge system:
1. The connection resistance between the ends of the bridge should not be greater than 0.00033 ohm. The grounding hole should be clear of insulating coating.
2. In the 1KV and below of Neutral Grounded Power System, the ground of the powered equipment is connected to the neutral earthing of the system.
3. When the power supply is cut off, the metal cross-sectional area of the bridge frame in the longitudinal direction should not be less than the specified value.