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The product of 1-core aluminum underground cable SUNWON- 1.8/3 (3.6) kV-AL/XLPE/PVC/DSTA/PVC-W is specified according to TCVN 5935-2:2013 with the following technical requirements:
- The rated voltage Uo/U(Um) of the cables considered in this standard is 1.8/3 (3.6) kV.
- Insulating compound
- PVC thermoplastic;
- Cross-linked insulating compound: Ethylene propylene rubber or the like (EPR), molecular rubber or high hardness ethylene propylene rubber (HEPR), Cross-linked polyethylene (XLPE).
- The maximum conductor temperature in normal operation is 70 degrees C (if PVC insulation) and 90 degrees C (if XLPE insulation).
- Conductors: Must be class 1 (1 solid conductor) or class 2 (braided conductor) (according to IEC 60228:2004) of annealed copper/coated with aluminum or aluminum alloy;
- Regulations on the minimum thickness of each insulating compound on each product classified according to the following nominal cross-sections: 1.5 and 2.5mm2, 4 and 6mm2, 10 and 16mm2, 25 and 35mm2, 50mm2, 70mm2, 95mm2, 120mm2, 150mm2, 185mm2, 240mm2, 300mm2…
- Thickness of extruded, wound inner coating (0.4mm);
- Maximum resistance: The measured resistance value must be corrected to a temperature of 20 degrees C and 1 km of length according to the formula and coefficient stated in IEC 60228.
- Shield regulations:
- The conductor screen shall be of non-metallic material and shall be of extruded semiconductor compound, which may be placed on top of a semiconductor ribbon. The extruded semiconductor compound shall be firmly bonded to the insulation;
- The insulating screen shall consist of a non-metallic semiconductor layer combined with a metallic layer. The non-metallic layer shall be extruded directly onto the insulation of each core and made of an adherent or peelable semiconductor compound;
- The metal screen shall be one or more ribbons, or a woven mesh or a layer of concentric wire, or a combination of wires and ribbon(s).
- Metal armor thickness regulation: Armor can be round/flat wire or double ribbon. In addition, the TCVN specifies that the tape armor should be wound spirally in two layers so that the outer band is approximately centered over the gap of the inner band…
1-core underground aluminum cable SUNWON- 1.8/3 (3.6) kV-AL/XLPE/PVC/DSTA/PVC-W is classified based on the nominal cross-section of the conductor core as follows: AXVSV-W 1x16mm2, AXVSV- W 1x25mm2, AXVSV-W 1x35mm2 W 1x400mm2…
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