Specifications:
1) Insulated resistance: ≥ 200MΩ
2) Power frequency withstand voltage: ≥ 3.5kV/5min
3) Fine gas tightness and power proof performance
4) Small branch contact resistance
5) contact base resistance ratio: ≤ 1.2
6) Large contact short-circuit strength
7) Change rate resistance ratio after short-circuit: ≤ 0.2
8) Self-extinguishing time of flame-retardant prefabricated branch
cable: ≤ 12s
9) Fire-proof cable supplies 90min of power under burning conditions
10) Highest working temperature:
a) Copper VV cable: 70oC
b) YJV cable: 90oC
11) Corrosion resistance from inorganic salt, oil, alkali, and organic
solvent
12) Fine heat stability and aging resistance performance

Inner packing:
Wooden cable reel