High Voltage HV 18/30kV Copper conductor XLPE insulated steel tape armored cable CU/XLPE/STA/PVC 3x240MM2

Specifications

High Voltage HV 18/30kV Copper conductor XLPE insulated steel tape armored cable  CU/XLPE/STA/PVC 3x240MM2

1. Description  CU/XLPE/STA/PVC CU/XLPE/STA/PVC CU/XLPE/STA/PVC
   Construction: Compacted stranded circular copper 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 inner covering as armoring bedding, double galvanized steel tape armored, PVC or PE outer sheath.

1. Operating Characteristics
   Rated voltage U₀/U(U_m): 18/30(36)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
2. Application
   The cable is used for fixed installations such as electric power distribution networks or industrial installations, which is laid indoors, outdoors, in tunnel or in cable trench, unable to bear external mechanical force.
   Single core cable in magnetic duct is not permissible.

3. Main technical data of 18/30KV, three cores, Copper conductor, XLPE insulated, double galvanized steel tape armored and PVC or PE sheath cable

   Size	Nominal thickness of XLPE insulation(mm)	Approx. thickness of copper tape screen (mm)	Nominal thickness of steel tape(mm)	Nominal thickness of PVC or PE(mm)	Approx. overall diameter of finished cable(mm)	Max. conductor D.C resistance @ 200C (Ω/km)
   3x50mm2	8.0	0.10	0.5	3.2	74.1	0.387
   3x70mm2	8.0	0.10	0.5	3.3	78.1	0.268
   3x95mm2	8.0	0.10	0.5	3.5	82.2	0.193
   3x120mm2	8.0	0.10	0.8	3.6	86.9	0.153
   3x150mm2	8.0	0.10	0.8	3.7	90.6	0.124
   3x185mm2	8.0	0.10	0.8	3.9	94.7	0.0991
   3x240mm2	8.0	0.10	0.8	4.0	100.4	0.0754
   3x300mm2	8.0	0.10	0.8	4.2	105.4	0.0601
   3x400mm2	8.0	0.10	0.8	4.4	113.0	0.0470