10kv cable intermediate head specification Model:
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YJV YJLV cable is suitable for AC 50Hz, rated voltage 6-35KV, power lines, transmission and distribution.
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YJV - Cross-linked polyethylene insulated, PVC sheathed copper core power cable.
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YJV22 - XLPE insulated, PVC sheathed steel band armoured copper core power cable.
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YJLV - Crosslinked polyethylene insulated, PVC sheathed aluminum core power cable.
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YJLV22 - Power cable with crosslinked polyethylene insulated, PVC sheathed steel band armoured aluminum core.
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When the ambient temperature of the cable is not lower than 0 degrees, it does not need to be heated in advance. Cable performance is not limited by its laying height difference. The bending radius of the laying should not be less than 10 times the outer diameter of the cable. The long-term allowable working temperature of 6-10KV cable core should not exceed 90 degrees. The long-term allowable working temperature of 35KV cable core should not exceed 80 degrees
The operating temperature of a high-voltage cable should not exceed 35 ° C.
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Because the long-term allowable working temperature of the cable is inversely proportional to the rated voltage of the cable, the rated voltage of the high-voltage cable is generally higher, when the temperature exceeds 35 ° C, the cable insulation strength is reduced, and accidents are prone to occur; Therefore, the operating temperature of the high-voltage cable should not exceed 35 ° C.
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operating characteristic
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Operating temperature: The highest rated operating temperature of the cable conductor is 90℃.
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2, overload temperature: cable short-term maximum overload temperature shall not exceed 130℃.
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3, short-circuit temperature: cable short-circuit, the maximum temperature shall not exceed 250℃. (Maximum duration is no more than 5 seconds).
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4, laying temperature: cable laying temperature is not less than 0℃. When laying below 0℃, it must be heated in advance.
35KV cold shrink cable terminal provided by Changsha Cable Accessories Co., LTD. : The ambient temperature is usually not higher than 45 ° C, not lower than -40 ° C. The long-term working temperature and overload temperature of the cable accessories meet the requirements of its supporting cables. The normal operating temperature is 90℃, and the short-circuit temperature is 250℃.