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Single Core Copper Conducotr , Middle Voltage Power Cable PVC
Sl No. | Description | Unit | Required specification | Manufacturer’s Particulars |
Name & address of the Manufacturer | To be mentioned | NBF cable HEBEI PROVINCE CHINA | ||
Type / Model of the offered Cable | To be mentioned | CU/XLPE | ||
Nominal System voltage | KV | 33 | 33 | |
Rated Voltage Cable | KV | 18/33 (36) | 18/33 (36) | |
Process of manufacturing | VCV/CCV | VCV | ||
Number of core and Cross sectional area of conductor cores | Sq.mm | 1X500 | 1X500 | |
Conductor materials | Copper | Copper | ||
Minimum no. of strand | No. | 53 | 60 | |
Diameter of each strand | mm | To be mentioned | 3.36 | |
Shape of conductor | Compacted circular | Compacted circular | ||
Type of conductor screen | Semi-conducting | Semi-conducting XLPE | ||
Thickness of semi-conducting screen | mm | 0.6 | 0.6 | |
Average thickness of insulation | mm | 8.0 | 8.0 | |
Process of curing | Dry process | Dry process | ||
Material of Insulation | Cross Linked Polyethylene (XLPE) | Cross Linked Polyethylene (XLPE) | ||
Type of non-metallic insulating screen | Semi-conducting | Semi-conducting XLPE | ||
Thickness of semi- conducting insulation screen | mm | 1.0 | 1.0 | |
Number and diameter of copper screen strands | No./mm | Based on design calculation | 60/3.36 | |
Composition of filler | PVC | PVC | ||
Composition of bedding | Extruded PVC | Extruded PVC | ||
Thickness of bedding | mm | Based on design calculation | 1.5 | |
Number and diameter of armour wire | No./mm | As per IEC 60502 | 42 | |
Average thickness of MDPE over sheath | mm | Based on design calculation | 2.9 | |
Nominal diameter of complete cable | mm | Based on design calculation | 61.0 | |
Nominal weight per meter of complete cable | Kg/m | Based on design calculation | 7.88 | |
Minimum radius of bend round which cable can be laid | mm | Based on design calculation | 1000 | |
Maximum D.C. resistance conductor per meter at 20°C | Ohm/m | Based on design calculation | 0.0366 | |
Maximum A.C. resistance conductor per meter at maximum conductor temperature | Ohm/m | Based on design calculation | 0.0484 | |
Star reactance per meter cable at 50Hz | Ohm/m | Based on design calculation | 0.142 | |
Star capacitance per meter of cable at 50Hz | pF/m | Based on design calculation | 285 | |
Charging current per conductor per meter at 18000/30000Volts, 50Hz | mA | Based on design calculation | 2.68 | |
Maximum current carrying capacity of conductor in ground | A | Based on design calculation | 625 | |
Maximum conductor temperature under continuous loading | ºC | Based on design calculation | 90 | |
Short circuit withstand capacity of the cable for sec. Duration | KA | Mm. 25 | 25 | |
Conductor temperature the end of short circuit | ºC | ≤ 250 | ≤ 250 | |
Earth fault withstand capacity for 1 sec. | KA | Mm. 25 | 25 | |
Screen short circuit withstand capacity | KA | Mm. 25 | 25 | |
Armour short circuit capacity | KA | Based on design calculation | 25 | |
Cable resistance, reactance: | ||||
a) for positive sequence | Ohm/m | Based on design calculation | 0.0481+j0.186 | |
b) negative sequence | Ohm/m | Based on design calculation | 0.0481+j0.186 | |
c) zero sequence | Ohm/m | Based on design calculation | 0.0751+j0.334 |