What is the difference between YJV cable and YJV22 cable?

YJV22 is a cross-linked polyethylene insulated power cable, generally used for medium and high voltage cables
YJV insulation uses cross-linked polyethylene
The working temperature of YJV cable reaches 90 degrees Celsius, and the maximum rated temperature of YI type cable conductor during operation is 90 degrees Celsius. During short circuit (lasting less than 5 seconds), the maximum temperature does not exceed 250 degrees Celsius.
YJV has a long service life in the long run.
From the perspective of technical and economic indicators, the YJV of three core cables has higher parameters than VV cables. It is recommended to use YJV in civil buildings, as its current carrying capacity is higher than VV. The main reason is that in electrical fires, due to its insulation material
The material does not contain chlorine and does not produce toxic gases during combustion. Armored cables, such as VV22 or YJV22, are commonly used. Actually, armored cables are cables with metal jackets, usually used for outdoor overhead and buried in trenches, with good protective performance. YIV22 has a maximum rated working temperature of 90 ℃, VV22 has a maximum rated working temperature of 70 ℃, and YJV22 has better electrical performance than VV22
Good mechanical and corrosion resistance, as well as advantages such as light weight and unrestricted installation by drop. In the structure, the insulation color separation of YIV22 is semi transparent, while VV22 is opaque, which can clearly distinguish between the two types of cables. The former is cross-linked polyethylene insulation with halogen-free elements and has better mechanical and electrical properties than the latter's polyethylene insulation. Crosslinked polyethylene insulated power cables are used in power transmission and distribution systems with rated voltages of 0.6/1,1.8/3,3.6/6/6/10,8.7/10,8.7/15,8.7/15,12/20,21/35,26/35kV.