Brief introduction of yjv22 cable model
XLPE insulated power cables are mainly divided into two materials, one is copper core and the other is aluminum core. There are mainly the following types of copper-core XLPE insulated power cables: YJV, YJV 22 and YJV 32. The full name of yjv is yjv, and its main function is to bear a certain strength of laying traction. Generally speaking, yjv is mainly laid indoors, in tunnels, cable trenches or pipelines, but yjv can also be buried in loose soil.
YJV？ The full name of 22 is XLPE insulated steel belt armored vinyl chloride sheathed power cable. Its main function is to bear mechanical external force, but it can't bear huge tensile force and is easy to be damaged. Crosslinked polyethylene insulated steel belt armored vinyl chloride sheathed power cables are mainly laid indoors, in tunnels, in cable trenches or directly buried underground. YJV？ The full name of 32 is XLPE insulated thin steel wire armored PVC sheathed power cable, which is mainly used to bear certain mechanical external force and tension, and is mainly suitable for high drop areas.
There are mainly the following types of aluminum-core yjv2 cables: YJLV is the full name of yjv, and its main function is to bear certain laying traction strength. Generally speaking, yjv is mainly laid indoors, in tunnels, cable trenches or pipelines, but yjv can also be buried in loose soil. YJLV？ The full name of 22 is XLPE insulated steel belt armored vinyl chloride sheathed power cable. Its main function is to bear mechanical external force, but it can't bear huge tensile force and is easy to be damaged.
The difference between YJV22 and YJV
YJV22 is a XLPE insulated power cable, generally a medium and high voltage cable.
1.YJV insulation adopts crosslinked polyethylene.
2.2 working temperature. YJV cable reaches 90 degrees. The maximum rated temperature of YJV cable conductor is 90 degrees Celsius, and the maximum temperature during short circuit (lasting less than 5 seconds) does not exceed 250 degrees Celsius. ? 3.YJV has long service life.
4. From the technical and economic indicators, the parameters of three-core YJV are higher than those of VV cable.
YJV is recommended for civil buildings. Its current carrying capacity is greater than VV. More importantly, in the case of electrical fire, because its insulation material does not contain chlorine, it will not produce toxic gas when burning. Armored cable, that is, VV22 or YJV22 that we usually use.
Armored cable is actually a kind of cable with metal sheath, which is generally used for outdoor overhead and buried trench, with good protective performance.
The maximum rated working temperature of YJV22 is 90℃, and that of VV22 is 70℃. YJV22 has better electrical performance, mechanical performance and corrosion resistance than VV22, and also has the advantages of light weight and unlimited laying.
Structurally, the insulation color separation of YJV22 is translucent, while VV22 is opaque, which can clearly distinguish two kinds of cables. The former is polyethylene? Insulation, halogen-free, pollution-free, and superior to the latter's mechanical and electrical properties of PVC insulation.
XLPE insulated power cables for rated voltage.
0.6/ 1, 1.8/3,3.6/6,6/ 10,8.7/ 10,8.7/ 15, 12/20,2? 1/35,26/35kv transmission and distribution system. ? Model and name? Model number? Name? YJV？ YJLV？ Yjv with copper core or aluminum core? YJV22？ YJLV22？ Copper core or aluminum core XLPE insulated steel belt armored PVC sheathed power cable? YJV32、42？ YJLV32、42？ Copper core or aluminum core XLPE insulated steel wire armored PVC sheathed power cable.
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