IEC60502,and BS6346, VDE, AS/NZS, UL,etc or as customer's request.
The Rated Voltage(kv):
1st class 0.6/1 1.8/3 3.6/6 6/10 8.7/15 12/20 18/30 21/35
2nd class 1/1 3/3 6/6 8.7/10 12/15 18/20 - 26/35
1)These cables are most suitable for direct burial or for installation on trays or ducts, Where there is a risk of mechanical damage, armoured cables should be used.
2) For laying in ground along route with large difference of level able to bear external mechanical forces.
Construction for concentric cable :
Conductor: Solid or stranded copper
Insulation: Cross-linked polyethylene (XLPE) or Polyvinyl chloride (PVC)
Filler: Polypropylene filament with lapped binding tape
Binder: Binding tape
Inner sheath: Polyvinyl chloride (PVC)
Amour: Galvanized steel wire armored(SWA) or steel tape armored(STA)
Sheath: Polyvinyl chloride (PVC)
Nominal Section for concentric cable:
Area(mm2) :1.5 2.5 4 6 10 16 25 35 50 70 95 120 150 185 240 300 400 500 630 800
Operating Features for concentric cable:
1)The maximum conductor operating temperature: 90°C
During short circuit (lasting less than 5 seconds) the maximum temperature of the cable conductor shall not be above 250°C
Environment temperature should be no lower than 0°C for laying the cable.
2)Bending Radius of the Cable:
Single Core Cable: Non Armored Cable 20D, Armored Cable 15D
Cores Cable: Non Armored Cable 15D, Armored Cable 12D.
Remarks: D means practical external diameter of the cable.
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