Long-term allowable operating temperature of high voltage mining cable is not more than 65℃/90℃. 1.Long-term allowable operating temperature of high voltage mining cable is not more than 65℃/90℃. 2.The lowest temperature of high voltage mining cable should more than-35℃. 3.This high voltage mining cable of shield machine is mainly used for heavy equipment for open-pit mine and underground digging under the voltage system of 8.7/15kV. 4.The bending radius:not more than 6 times of cable diameter. No.ofcore NormalArea(mm²) Construction(No./mm) Sheaththickness(mm) OveralDiameter(mm) Insulationthickness(mm) MaxConductor resistanceat20°C(Ω/km)Bare MaxConductorresistanceat 20°C(Ω/km)Tinned 1 0.75 24/0.20 0.8 4.6±0.2 0.8 26 26.7 1.0 32/0.20 0.8 4.8±0.2 0.8 19.5 20 1.5 30/0.25 0.8 5.1±0.2 0.8 13.3 13.7 2 0.75 24/.02 0.6 6.4±0.2 0.8 26 26.7 1.0 32/0.2 0.6 6.9±0.2 0.9 19.5 20 3 0.75 24/0.2 0.6 7.0±0.2 0.9 26 26.7 1.0 32/0.2 0.6 7.4±0.2 0.9 19.5 20