1 Mining cable and thermal pipe parallel installation should be maintained at a distance of 2m, the cross should be kept at 0.5m.
2 The cable and other pipelines parallel or cross-installation are to maintain a distance of 0.5m.
3 Cable buried installation, 1-35kV cable buried depth should not be less than 0.7m.
4 10kV, and below the cable parallel to each other when the installation distance of not less than 0.1m, 10-35kV not less than 0.25m, cross the distance of not less than 0.5m.
5 The minimum bending radius of the cable, multi-core cable shall not be less than 15D, and single-core cable shall not be less than 20D (D for the cable diameter).
6 6kv and above cable connector.
A. When installing the cable terminal, must remove the semi-conductive shielding layer, the operation shall not damage insulation, and should avoid knife marks and a rugged situation.
If necessary, use sandpaper polished; the shield end should be smooth, and the graphite Layer (carbon particles) cleared.
B. Plastic insulated cable end copper shield and steel armor must be well grounded, the short line should also follow this principle, to avoid the three-phase unbalanced operation of the steel armor at the end of the induced electromotive force, and even "ignition" and combustion jacket And so on.
Grounding lead wire to use tinned braided copper wire, cable, and copper cable connection with soldering iron soldering, welding should not be used to burn, so as not to burn the insulation.
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