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The cables are designed for aerial power lines with rated voltage Uo(Um) 10(12)kV.
GB14049 GB14049 etc.
Rated voltage is 10kV
Max.Continuous permissive working temperature of conductor:XPLE insulation should be not more than 90
Max. Temperature at short circuit (the longest continuous time is not more than 5S) XLPE insulation is 250
Installation temperature of cable should be not less than -20
Permissive benging radius of cable should be not less than 20(D+d) mm.
D -the actual overall diameter of cable, mm; d-the actual overall diameter of conductor, mm.
Insulation resistance of common insulation construction of aerial cable should be not less than 1500M km, and insulation resistance of thin XLPE insulated construction of light aerial cable should be not less than 1000m km.
AC Voltage test: immerse cables in water at least for 1h before implementing testing voltage.
(common insulation construction cable is 15KV, and thin XLPE insulated light cable is 12kV)
The continuous time of test is 1min. The cable should not be breakdown.
Partial discharge test: implementing AC Voltage 9kV on insulationshield cable. The discharge volume of cable should be not more than 20pc.