pvc insulation & sheath power cable of 0.6/1 kv or lower
http://www.ahdqjt.com time: 11/20/10 08:38
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 |
-- |
1 |
1.5~500 |
vv |
-- |
2 |
1.5~185 |
vv |
-- |
3 |
1.5~300 |
vv |
-- |
4 |
2.5~300 |
vv |
vlv |
3+1 |
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.
：cables
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