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Description

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, galvanized steel wire armored, PVC or PE outer sheath.

1. Operating Characteristics Rated voltage U0/U(Um): 12/20(24)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; Um 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 15 times of the diameter of cable For three core cable: not less than 12 times of the diameter of cable When the armored single core cable used for Alternative Current(AC) system, the armoring material should be non-magnetic.
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, in cable trench, or direct in ground, able to bear external mechanical force and certain pulling force.

3. Main technical data of 12/20KV, three cores, Copper conductor, XLPE insulated, galvanized steel wire armored and PVC or PE sheath cable                                                                                                                                                                       

4. CABLE  CONSTRUCTION: 12/20KV CU/XLPE/SWA/PVC or PE

   Size	Nominal thickness of XLPE insulation(mm)	Approx. thickness of copper tape screen (mm)	Approx. diameter of steel wire (mm)	Nominal thickness of PVC or PE(mm)	Approx. overall diameter of finished cable(mm)	Max. conductor D.C resistance @ 200C (Ω/km)
   3x35mm2	5.5	0.10	2.5	2.8	61.9	0.524
   3x50mm2	5.5	010	2.5	2.9	64.7	0.387
   3x70mm2	5.5	0.10	2.5	3.1	68.8	0.268
   3x95mm2	5.5	0.10	2.5	3.2	72.8	0.193
   3x120mm2	5.5	0.10	3.15	3.3	77.3	0.153
   3x150mm2	5.5	0.10	3.15	3.4	81.2	0.124
   3x185mm2	5.5	0.10	3.15	3.6	85.4	0.0991
   3x240mm2	5.5	0.10	3.15	3.7	91.0	0.0754
   3x300mm2	5.5	0.10	3.15	3.9	95.8	0.0601
   3x400mm2	5.5	0.10	3.15	4.1	103.7	0.0470

    We can produce POWER CABLE according to popular international standards such as ASTM,BS,DIN,NF &AS/NZ ect.