MHYV 10*2*7/0.28 mining communication cable
MHYV polyethylene insulated PVC sheathed communication cable for coal mines
Usage conditions
1. AC rated voltage: U. /U (V series: 600/1000V, K series: 450/750V, B series: 450/750V).
2. Maximum long-term operating temperature of the cable
(1) Polyethylene fluoride insulation and sheath: 70℃ and 105℃; cross-linked polyethylene insulation: 90℃;
(2) Fluoroplastic insulation and sheath: 220℃ and 260℃; Fluoroplastic insulation and 105℃ flame retardant polyvinyl fluoride sheath: 90℃ and 125℃.
(3) Low halogen and low smoke flame retardant PVC insulation and sheath: 70℃; Halogen-free low smoke flame retardant polyolefin insulation and sheath: 90℃ and 125℃.
3. Minimum ambient temperature:
(1) Flame retardant polyvinyl chloride insulation and sheath: fixed installation -40℃; non-fixed installation -15℃;
(2) Fluoroplastic insulation and sheath: fixed installation -60℃; non-fixed installation -20℃;
4. The safe installation temperature of the cable should not be lower than 0℃.
5. Fire resistance:
Complies with IEC331 and GB12666.6
Flame temperature 750℃
Flame temperature 950℃-1000℃
Flame temperature 750℃-800℃
Burning time 3h
Burning time 90min
Burning time 90min
Cooling time 21h
