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Discussion on XLPE Insulated Power Cable

Release time:

2022-03-03 15:34

Cross-linked polyethylene insulated power cables are commonly used in civil engineering, including ordinary type, flame retardant type, fire-resistant type and halogen-free low-smoke flame retardant type. XLPE insulated power cable is resistant to environmental stress, has the characteristics of high mechanical strength, chemical resistance, excellent electrical performance, simple structure, light weight and convenient use.
1. XLPE insulated power cable use: This product is suitable for power lines with rated voltage (U0 / U) from 3.6 / 6 to 26/35KV, used for energy transmission and distribution.
2. XLPE insulated power cable standard: aluminum core plastic insulated power cable, GB12706-91 rated voltage 35KV and below copper core.
3. The use characteristics of cross-linked polyethylene insulated power cables:(1) When the cable is laid at an ambient temperature of not less than 0°C, there is no need to preheat. There are no restrictions on cable laying. (2) The long-term allowable working temperature of the cable core wire shall not exceed the following regulations: 90 ℃ for cables with PVC sheath; 80 ℃ for cables with polyethylene sheath. (3) When the wire core is short-circuited (for a maximum of 5S), the temperature should not exceed 250°C. (4) The minimum bending radius when laying the cable is as follows: single-core cable: 20(d D)± 5%; three-core cable: 15(d D)± 5%, in the formula: d is the actual outer diameter of the conductor, D is the actual outer diameter of the cable.



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