To select the type of cable tray and specification is a very important key point for cable tray roll forming machine. But how much information do you know about it? Here are some details about it.

Firstly, select for the type of cable tray and specification. If the electrical interference shielding cable network or requirements with impact outside, such as the environment of corrosion liquid, flammable dust and so on, it should choose corrosion protection shielding cable tray of the compound groove.

The environment with strong corrosively usually adopts the cable tray with composite epoxy resin anticorrosion flame retardant. The same material should be choosing for bracket and the holder to improve the service life of the accessories from the bridge and the cable tray. If the environment is easy to dust and need to cover or the outside place, both of them should be flat.

In addition to the situation above, we can select tray type, slot type, anticorrosion of flame retardant cable tray with glass or steel anti-corrosion flame-retardant cable tray bridge according to the local environment and technology requirements. If it is easy to dust, it will be covered by the flat.

In the public channel or across the road section outside, the base of the rock-bottom should be added base plate or use the tray in the segment. When the large span across the public channel which based on the requirements of the user to improve the loading capacity of the cable tray or choose to use the truss for the cable tray roll forming machine. So it should select hybrid cable tray for a big span, if it is out of the room, should choose composite epoxy refers to bridge.

Secondly, it is about how to choose the specification of the cable tray for the roll forming machine. The width and the height of composite epoxy resin should be selected according to the specification of the cable tray, and it should conform to the filling rate of the cable be controlled under the specified value with the specification, it will be 40~50% of the power cable, and controlled cable can be 50~70%, additional, there will left 10~25% of the type.

Different kind specifications of elbow and attachment should comply with the engineering layout condition and match with the tray bridge. The selection of holder and hanging bracket, it should equip according to the specifications of tray bridge, number of layers and the span, and meet the requirements of loading.

The choice of cross-sectional area of tray bridge should depend on any line from the cable network in the table, which is protected by the biggest electric current, and should meet the loading requirements.

Thirdly, collocating the holder and hanging bracket of the cable tray bridge. The span between the holder and hanging bracket generally adopts 1.5~3 meters inside, it will adopt 6 meters outside. Both of the holder and hanging bracket without straight line should obey these principles. When the width of the cable tray is less than 300mm, there should set a holder and a hanging bracket at the point between the nonlinear line and the straight line. If the width is over 300mm, not only comply the condition above, also add a holder and a hanging bracket in the middle of the nonlinear line.