gui chao cable news: basic knowledge of security cable
from：guichao author：admin click： 459 addtime：2017-04-22 15:49:56
rvv and kvv rvvp and kvvp
difference: rvv and rvvp inside the wire used for the formation of multiple strands of fine copper wire, that is, rv wire composition.
kvv and kvvp inside the wire used for single strand thick copper wire composed of hard wire, that is, bv line composition.
avvr and rvvp
the difference: something like that, just inside the section is less than 0.75 mm2 in the name of avvr,
greater than or equal to 0.75 mm2 rvvp.
syv and sywv
difference: syv is a video transmission line with polyethylene insulation.
sywv is a radio frequency transmission line. for cable tv.
rvs and rvv 2 core
difference: the rvs is twisted into a double core rv wire, and has no outer sheath.
rvv 2 core cable directly into the cable, with an outer sheath for power supply, control signals, etc..