Fire-resistant, flame-retardant power cables with low gas and fume emission
ВВГнг(А)-FRLS, ВВГЭнг(А)-FRLS
DESIGNATION
Cables are designed for power transmission and distribution in fixed units and fixed installation of power lines with rated alternating voltage of 660 V or 1000 V and 50 Hz frequency.
Cable models and their definitions shall correspond to the details given in the table below:
|
Model |
Definition |
|
ВВГнг(А)-FRLS |
Power cable with copper conductors, with thermal barrier of mica tapes, in flame-retardant polyvinylchloride compound insulation and sheathwith low gas and fume emission |
|
ВВГЭнг(А)-FRLS |
The same with shielding of foil or copper tape under sheath |
ARRANGEMENT
CONDUCTOR:copper, solid.
BRAIDING:each conductor of each model is braided with two mica tapes with rated thickness of 0.14 mm in one direction with not less than 40% overlay
It's allowed to lay polyethylene terephthalate film braiding over mica tapes with not less than 15% overlay.
INSULATION: flame-retardant polyvinylchloride (PVC) compound with low gas and fume emission
STRAND:insulated conductors shall be stranded.During stranding of four-core cables with conductor area of 6.0 mm2and more as well as five-core cables - insulated conductors are located around PVC compoundkordel.
Two- and four-core cables can have insulated parallel laid conductors. Inthiscase "П" index goes after cable model.
FILLING:stranded insulated conductors shall be coated with inner extruded sheath of flame-retardant PVC compound with low gas and fume emission which fills the spaces between conductors in multi-core cables.
SHIELDING:inner sheath of ВВГЭнг(А)-FRLS cable shall be shielded with copper tape or copper foil braiding. It's allowed to shield the ВВГЭнг(А)-FRLS cables with copper wire lay.
SHEATH: flame-retardant PVC compound with low gas and fume emission
NUMBER OF CONDUCTORS:1; 2; 3; 4; 5.
CONDUCTORAREA, mm²:1.5;2. 5;4;6;10;16;25;35;50.
TECHNICALSPECIFICATIONS
Cables are operable at relative atmospheric humidity up to 98% at ambient temperature up to +35°C
Operating temperature range: from -30°С to +50°С.
Maximal continuous conductor heating temperatureduring operation: not more than +70°С.
Permissible conductor heating temperature under overload conditions is not more than 90°С.Operating periodunder overload conditions - not less than 8 hours per day and not more than 1000 hours overall.
Minimal bend radius of multi-core cables during cabling shall be not less than 10 outer cable diameters.
Cables do not spread combustion when laid as harness.
Factory power cable length - 450m.
Operational life-30 years.
Regulations: TechnicalSpecificationsBY 500017371.072-2013, TechnicalSpecifications16-705.337-2004 (GOST 31996-2012) (manufactured under license of JSC "All-Russian Research and Development Institute for Cable Industry")