Zhongdong Cable Co., Ltd.
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XLPE Insulated High Voltage Cable Single Core Three Core PVC Shield 110kV
Application
Construction
Description
Specification
|
Parameter category |
Parameter item |
parameter values |
|
configuration parameter |
electric conductor |
Material: copper core (cross-section range: 630~1600mm²) |
|
External diameter of conductor |
30.0~56.5mm (The larger the section, the increasing the outer diameter) |
|
|
insulating course |
Material: Cross-linked polyethylene (XLPE), thickness of 16.5±0.5mm |
|
|
Conductor shielding layer |
Thickness of 1.2mm (semi-conductive material) |
|
|
insulation screen |
Thickness of 1.0mm (semi-conductive material) |
|
|
metallic sheath |
Wrinkle aluminum sheath (2.0±0.2mm) (double galvanized steel strip, 0.5~0.8mm) |
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|
oversheath |
Material: flame retardant polyvinyl chloride (PVC) or polyethylene (PE), thickness of 4.5±0.2mm |
|
|
Electrical parameters |
20℃ conductor DC resistance |
0.0754~0.009 Ω / km (the larger the section, the lower the resistance) |
|
90℃ conductor AC resistance |
0.097~0.0142Ω/km |
|
|
capacity value |
134-282 p F/m (increased with increasing cross-section) |
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|
Power frequency pressure test |
64 / 110kV (factory test) |
|
|
Local discharge performance |
At 5pC(1.5U₀ under-voltage) |
|
|
Mechanical and laying parameters |
minimum bending radius |
12 x cable outer diameter (armor layer requirement) |
|
Allow working temperature |
Long-term: 90℃, short circuit (within 5 seconds): 250℃ |
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|
Laying ambient temperature |
≥0℃ |
|
|
Vehicle flow reference |
Flow rate in single return air |
Section 630mm²: 1010A; section 1600mm²: 1690A (ambient temperature 40℃, soil thermal resistance 1.0m · ℃ / W) |
|
Load flow rate of directly buried laying |
Section 630mm²: about 800A; section 1600mm²: about 1300A (buried depth 1m, ground temperature 35℃) |