Application
The cable is laid indoors, outdoors, intunnel, in cable trench, or direct in ground, able to bear external mechanicalforce and certain pulling force.
Description
Construction: Compacted stranded circular orsegmental copper or aluminium conductor, extruded semi-conducting compound asconductor screen, cross-linked polyethylene(XLPE) insulation, semi-conductingcompound as insulation screen, semi-conducting water blocking tape, corrugatedaluminium sheath, PE or PVC outer sheath.
OperatingCharacteristics
Rated voltageU0/U(Um): 127/220(245)kV
U0 is the ratedpower frequency voltage between conductor and earth or metallic screen for whichthe cable is designed;
U is the rated power frequency voltage betweenconductors for which the cable is designed;
Um is the maximumvalue of the "highest system voltage" for which the equipment may beused.
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 shouldnot be lower than: 0 °C
The bending radius of cable: not less than 20 timesof the diameter of cable
Rated voltageU0/U(Um): 127/220(245)kV
U0 is the ratedpower frequency voltage between conductor and earth or metallic screen for whichthe cable is designed;
U is the rated power frequency voltage betweenconductors for which the cable is designed;
Um is the maximumvalue of the "highest system voltage" for which the equipment may beused.
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 shouldnot be lower than: 0 °C
The bending radius of cable: not less than 20 timesof the diameter of cable
Standards
GB/Z 18890-2002, IEC 62067
Common types of cables we produce
Type | Description | Number ofcores | Nominal cross sectionof conductor (mm2) | ||
38/66kV | 64/110kV76/132kV | 127/220kV | |||
YJLW02 | CU/XLPE/CorrugatedAluminium/PVC | 1 | 150~2500 | 240~2500 | 400~2500 |
YJLLW02 | AL/XLPE/CorrugatedAluminium/PVC | ||||
YJLW03 | CU/XLPE/CorrugatedAluminium/PE | 1 | 150~2500 | 240~2500 | 400~2500 |
YJLLW03 | AL/XLPE/CorrugatedAluminium/PE | ||||
YJLW02-Z | CU/XLPE/CorrugatedAluminium/PVC Longitudinal Waterproof | 1 | 150~2500 | 240~2500 | 400~2500 |
YJLLW02-Z | AL/XLPE/CorrugatedAluminium/PVC Longitudinal Waterproof | ||||
YJLW03-Z | CU/XLPE/CorrugatedAluminium/PE Longitudinal Waterproof | 1 | 150~2500 | 240~2500 | 400~2500 |
YJLLW03-Z | AL/XLPE/CorrugatedAluminium/PE LongitudinalWaterproof | ||||
Dimensions for reference
Nominal cross sectional area ofconductor | Insulation thickness | Inner Sheath thickness | Steel tape thickness | Outer Sheath thickness | Approx diameter of cable | Approx.weight of cable | D.C.resistance of conductor20°C | Parcial discharge test 1.5Uo | Current rating (A) | |||||
Cu | Al | Cu | Al | In air | Direct in ground | |||||||||
mm² | mm | mm | mm | mm | mm | Kg/km | Kg/km | Ω/km | Ω/km | pc | Cu | Al | Cu | Al |
25 | 4.5 | 1.4 | 0.5 | 2.5 | 53.69 | 3675 | 3208 | ≤0.7270 | ≤1.2000 | ≤20 | 120 | 90 | 125 | 100 |
35 | 4.5 | 1.4 | 0.5 | 2.6 | 56.25 | 4167 | 3512 | ≤0.5240 | ≤0.8680 | ≤20 | 140 | 110 | 155 | 120 |
50 | 4.5 | 1.5 | 0.5 | 2.7 | 58.83 | 4787 | 3852 | ≤0.3870 | ≤0.06410 | ≤20 | 165 | 130 | 180 | 140 |
70 | 4.5 | 1.5 | 0.5 | 2.8 | 62.90 | 5682 | 4374 | ≤0.2680 | ≤0.4430 | ≤20 | 210 | 165 | 220 | 170 |
95 | 4.5 | 1.6 | 0.5 | 3.0 | 66.13 | 6640 | 4864 | ≤0.1930 | ≤0.3200 | ≤20 | 255 | 200 | 265 | 210 |
120 | 4.5 | 1.7 | 0.5 | 3.1 | 69.77 | 7643 | 5400 | ≤0.1530 | ≤0.2530 | ≤20 | 290 | 225 | 300 | 235 |
150 | 4.5 | 1.7 | 0.5 | 3.2 | 73.08 | 8769 | 5965 | ≤0.1240 | ≤0.2060 | ≤20 | 330 | 255 | 340 | 260 |
185 | 4.5 | 1.8 | 0.5 | 3.3 | 77.26 | 10109 | 6651 | ≤0.0991 | ≤0.1640 | ≤20 | 375 | 295 | 380 | 300 |
240 | 4.5 | 1.9 | 0.5 | 3.5 | 82.85 | 12123 | 7637 | ≤0.0754 | ≤0.1250 | ≤20 | 435 | 345 | 435 | 345 |
300 | 4.5 | 2.0 | 0.8 | 3.7 | 89.61 | 15208 | 9600 | ≤0.0601 | ≤0.1000 | ≤20 | 495 | 390 | 485 | 390 |
Photo of the high voltage power cable 300mm2 500mm2 630mm2
