What is the difference between yjy cable and yjv cable?

YJY means cross-linked polyethylene insulated polyethylene sheathed power cable. Laying in the room, tunnel and pipeline, can also be buried in the loose soil, but can not withstand tension and pressure.YJ indicates that the insulation using XLPE (crosslinked polyethylene), XLPE that is, through physical or chemical methods of PE (polyethylene) crosslinking, XLPE can greatly improve its breakdown and heat-resistant properties, to maintain the original advantages of PE. The last Y indicates that PE (polyethylene) is used for the sheath. This cross-linked polyethylene material price is higher than the price of polyvinyl chloride material, resulting in the high cost of YJY, cross-linked polyethylene higher operating temperature of ninety degrees, on the higher operating temperature of vinyl chloride seventy degrees. In addition, YJV in the long run than VV number (long service life, etc.) but more expensive than VV. From the technical and economic indicators, three-core YJV than VV cable parameters are higher, such as: the flow: 40 degrees in the air, 10 square YJV: 60, VV: 46, but some designs in the selection of cable, 40A circuit breaker with 10 square YJV cable. From the operating temperature YJV is 90 degrees, VV is 70 degrees, from the short-circuit allowable higher: YJV is 250 degrees, VV is 160, 140.

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