high voltage 21/35kv aluminum conductor xlpe insulated cable

High voltage HV 21/35kV ALUMINUM CONDUCTOR XLPE INSULATED POWER CABLE

21/35kV AL/XLPE/PVC(or PE) Power Cable

1. Description HV ALUMINUM XLPE CABLE HV ALUMINUM XLPE CABLE

Construction: Compacted stranded circular aluminum conductor, extruded semi-conducting compound as conductor shield, cross-linked polyethylene (XLPE) insulation, semi-conducting compound as insulation shield, copper tape or combination of copper wire and tape as metallic screen, three cores assembled together with non-hygroscopic polypropylene filler, wrapped with binder tape, PVC or PE outer sheath.

2.Operating Characteristics
Rated voltage U₀/U(U_m): 21/35(40.5)kV
U₀ is the rated power frequency voltage between conductor and earth or metallic screen for which the cable is designed;
U is the rated power frequency voltage between conductors for which the cable is designed;
U_m is the maximum value of the “highest system voltage” for which the equipment may be used.
Max. permissible continuous operating temperature of conductor: 90 °C
Max. temperature of conductor during short-circuit (5s max. duration) shall not exceed: 250 °C
The ambient temperature under installation should not be lower than: 0 °C
The bending radius of cable is recommended as following:
For single core cable: not less than 20 times of the diameter of cable
For three core cable: not less than 15 times of the diameter of cable

3.Technical data of 21/35KV, three cores, Aluminum conductor, XLPE insulated, and PVC or PE sheath cable