It is used to transmit and distribute power on the power line of A.C. rated voltage 0.6/1kV
Executive standard:
GB/T12706.1 (equal to the standard of IEC60502)
Working condition:
Long-term working temperature allowed by cable conductor shall be no more than 70℃
Max. temperature of cable conductor shall be no more than 160℃ during short circuit(the longest lasting time shall be no more than 5 seconds).
Environment temperature for installation shall be no less than 0℃
Type, Description and Application occasion
Type
Description
Application occasion
Cu
Al
VV
VLV
Power cable with PVC insulation and sheath
To be laid indoors, in the tunnel, cable furrow or pipe. The cable can not bear mechanical force from outside
VV22
VLV22
Power cable with PVC insulation, PVC sheath and steel tape armored
To be laid underground, the cable can bear certain mechanical force, but it can not bear great pulling force
Production Scope
Type
Core number
Nominal cross section area
Cu
Al
VV
--
VV22
--
VLV
VLV22
1
1.5~500
2.5~500
10~500
VV
--
VV22
--
VLV
VLV22
2
1.5~185
2.5~185
4~185
VV
--
VV22
--
VLV
VLV22
3
1.5~300
2.5~300
4~300
VV
--
VV22
--
VLV
VLV22
4
2.5~300
2.5~300
4~300
VV
VV22
VLV
VLV22
3+1
4~300
4~300
Main technical parameter of cable:
Max. value of conductor DC resistance shall meet the requirement of conductor of category 2 stipulated in GB/T3956 standard at 20℃
For single core cable without shielding, voltage test of 3.5kV under power frequency is put on for 5 minutes between conductor and water when be immersed in the water for one hour. For multi-core cable, between each insulated conductor and other conductor, voltage test of 3.5kV under power frequency is put on for 5 minutes without puncture of insulation.
OVERHEAD LINE CONDUCTORS
