The cable is used to transmit power on the power transmission and distribution line of A.C. 50Hz, rated voltage 35kV or lower. By comparison with power cable with PVC insulation, it has not only excellent electric performance, mechanical performance, heat & aging resistant performance, weather resistant performance, chemical corrosion resistant performance, but also simple structure light weight, no restriction by laying drop, and high temperature allowance for long term working (90℃) as well.
Executive standard:
As section “extruded insulation power cable with rated voltage from 1kV (Um=102kV) to 35kV (Um=40.5kV)” stipulated in GB/T12706.1-2002~ GB/T12706.3-2002 or IEC60502-1997 according to the requirement of the customer.
Working condition:
- Long-term working temperature by cable conductor is 90℃
- Max. temperature of cable conductor shall be no more than 250℃ during short circuit (the longest lasting time shall be no more than 5 seconds)
- Environment temperature for installation is no less than 0℃
- Min. bending radium of cable:
It is no less than 15 times that of cable outer diameter for cable with three cores
It is no less than 20 times that of cable outer diameter for cable with single core
- A.C. rated voltage U0/U of cable is 0.6/4kV~26/35kV
U0: rated A.C. voltage of conductor to earth OR between metallic shielding for cable designing, which is called phrase voltage
U: rated A.C. voltage between conductors for cable designing, which is called wire voltage
Um: Max. Endurable value of “Max. System voltage” for cable
Type, Description and Application Occasion
Type |
Description
|
Application occasion
|
|
Cu
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Al
|
|
YJV
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YJLV
|
Power cable with XLPE insulation, PVC sheath
|
To be laid indoors, in the tunnel, cable furrow, pipe or under soft soil. The cable can not bear mechanical force from outside. Single core cable isn’t permitted to be laid in the magnetic pipe
|
|
YJY
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YJLY
|
Power cable with X;PE insulation, PE sheath
|
|
YJV22
|
YJLV22
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Power cable with XLPE insulation, steel tape armor, PVC sheath
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To be laid underground (depth of burying: at least 0.7m above earth), the cable can bear certain mechanical force, but it can not bear great pulling force.
|
|
YJV23
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YJLV23
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Power cable with XLPE insulation steel tape armored PE sheath
|
