Prefabricated branch cable

 

Executive standard:  JG/T147--2002

Application: It is mainly applicable to power supply systems for transmitting electric power in high-rise buildings, industrial mines, highways, tunnels, airports, bridges,venues and other occasions. 

 

Using features    

 

1.Insulating resistance is bigger than 200Mohm
2.Power frequency withstand voltageis bigger than3.5KV/5min 
3.Fine gas tightness and power proof performance 
4.The contact resistance of branch contact is small. The ratio of contact resistance and base resistance of branch cable with the same length≤1.2 

5.Large contact short-circuit strength. The change rate resistance ratio after short-circuit≤0.2 

6.The protection cover self-extinguishing time of ZR-YJV flame-retardant type prefabricated branch cable≤12s 

7.The NH fire-proof type cable can not only supply power under normal working conditions, but also keep 90min normal running under burning conditions 

8.The highest working temperature of the copper of VV type cable can reach 70'C. That of YJV type cable can be as high as high as 90'C. 

9.Fine corrosion resistance performance can resist corrosion by inorganic salt, oil, alkali and organic solvent 

10.YJV type prefabricated branch cable has fine heat stability and aging resistance performance.