The bending radius of the cable can be explained in two ways.
One is the bending radius of the cable itself, and the other is the bending radius of the cable in the construction and laying process.
The following describes the calculation of the minimum bending radius of the cable.
Cable Bending Radius Standard Complete
1. The calculation of the cable bending radius if the outer diameter of the cable is 10mm, the allowable bending radius of the cable is 15 * 10 = 150mm.
That is, when the cable is bent (at the corner), it is an arc bend.
Arc bending can be intersected by the tangent plumb line at any two points on the arc, that is, the radius of the arc should be greater than or equal to 150mm.
2. Cable bending radius standards 35kV and below plastic insulated power cables and plastic insulated control cables non-armored cables are not less than 6D outside diameter of the cable.
Armored or copper tape shielded cable is not less than 12D outside diameter of the cable. Shielded flexible cable shall not be less than 6D outside diameter of the cable.
The bending radius at the turn of the cable bridge shall not be less than the minimum allowable bending radius of the cable within the bridge.
The minimum bending radius of PVC insulated power cable is 10d. The minimum bending radius of cross-linked polyethylene insulated power cable is 15d. The minimum bending radius of the multi-core control cable is 10d.
3. For bare conductors, the bending radius is usually not less than 30D.