YJV cables and VV cables
YJV cable,YJV cables and VV cables are basically the same in function, and both belong to power cables, which are used to transmit and distribute electric energy, but their differences are also obvious. The following Huaqiang Cable will introduce the difference between the two in detail
difference between name and insulation raw material
1) The full name of VV cable is copper core PVC insulated PVC sheathed power cable,
the full name of YJV cable is copper core XLPE insulated PVC sheathed power cable,
and the insulation material of YJV is XLPE; What VV insulating material used is polyvinyl chloride.
EV Silicone cable
2) VV is plastic cable, YJV is cross-linked cable, and the insulation performance of YJV cable is better than that of plastic cable.
Plastic cable: power cable with plastic insulation and sheath, referred to as plastic cable.
Cross-linked cable: A cable whose insulation is made of cross-linked material,
the most commonly used material being cross-linked polyethylene (XLPE).
3) YJV has done cross-linking treatment on the insulating material to improve the heat resistance temperature, while VV has not.
difference in usage characteristics
1) Operating temperature – the maximum rated temperature of the VV power cable conductor is 70 degrees Celsius,
and the maximum temperature of the short circuit (duration less than 5 seconds) does not exceed 160 degrees Celsius.
The maximum rated temperature of the YJV cross-linked cable conductor is 90 degrees Celsius,
When short-circuited (duration less than 5 seconds), the maximum temperature does not exceed 250 degrees Celsius.
2) Carrying capacity – YJV cable has a working temperature of 90 degrees, while VV is only 70 degrees, and the carrying capacity of YJV cable with the same cross-sectional area is large.
3) The allowable current carrying capacity of the wire depends on the difference between its allowable working temperature and working voltage range:
usually, the working voltage range of YJV cables is 6-500KV, while that of VV cables is 1-6KV.
Therefore, VV power cables are generally used in low-voltage environments, while YJV covers high, medium and low-voltage environments,
which is why YJV cables require a higher level of manufacturing technology.
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