Fire resistant power cable NH-VV
The characteristics and uses of NH-VV products for
NH-VV fire resistant power cable
The characteristics and uses of NH-VV products for fire resistant power cables: This product has a higher fire resistance and can withstand short circuit and short circuit faults in a certain period of time under the direct combustion of flame. Therefore, it is beneficial to reduce losses when fire occurs. Low smoke and halogen free cables belong to ring protection cables, especially for electric power, large buildings, railways, ships, etc., which require higher fire safety. Industry.
Product execution standard
Fire resistance meets GB12666.6-90 requirements (IEC331).
1. AC rated voltage: U0/U 0.6/1KV
2. high long term working temperature: flame retardant PVC insulation and sheath 70 and 105 C
Fluorocarbon insulation and sheath 200 and 260 C
XLPE insulation at 90 C
Low smoke halogen free flame retardant polyolefin at 70 C
Low smoke halogen-free flame retardant crosslinked polyolefin at 90 and 120 degrees Celsius
3. low ambient temperature: flame-retardant PVC sheath: fixed at -40 C, fixed at -15 C.
Fluoroplastic insulation and sheath: fixed at -60 C; fixed at -20 C.
4. fire resistance characteristics:
|Comply with IEC331 regulations||The flame temperature is 750 degrees, the burning time is 3h, the cooling time is 12h, the additional rated voltage and the additional 3A current are.|
|GB12666.6- class A||Flame temperature 950-1000 degrees, combustion time 90min, additional rated voltage 3A current|
|Conform to GB12666.6-B class||Flame temperature 750-800 degrees, combustion time 90min, additional rated voltage 3A current|
5. installation temperature of cable installation is not less than 0 C
6. the allowable bending radius recommended for installation: the non armored cable is not less than 6 times the outer diameter of the cable.
The armoured cable is not less than 12 times the diameter of the cable.
The fluorine plastic insulation and sheath material cable is not less than 8 times of the outer diameter of the cable.
Fire resistant power cable
|NH-VV||Flame retardant PVC insulated and sheathed fire resistant control cables|
|NH-FF||Fluorocarbon insulated and sheathed fire resistant control cables|
|NH-VDVD||Low smoke low halogen flame retardant PVC insulated and sheathed fire resistant control cables|
|NH-YDYD||Low smoke halogen free flame retardant polyolefin insulated and sheathed fire resistant control cables|
|Remarks: armoured cable type plus 22|