NH-RVS Fire Resistant Twisted Pair Wire
NH-RVS Fire-Resistant Electric Wire
NH-RVS type copper core fire-resistant PVC insulated twisted connection flexible wire
I. Products
NH means fire-resistant, is in the polyvinyl chloride insulation and copper conductor added between a layer of mica tape, in order to make the outside fire flame and conductor separation, in a certain period of time can be normal power supply, but its insulation material and ordinary BV wire; and ZR means flame retardant, is in the polyvinyl chloride insulation added fuel retardant, so that the outer insulation does not delay the ignition, in the elimination of fire source automatically extinguished. The principle is not the same, but still NH has a higher rating.
II. Standards of implementation
Conforms to IEC331 Conforms to GB12666.6
III. Characteristics of use
1. Used for detector lines of automatic fire alarm system for fire protection.
2. For household appliances, small electric tools, instruments and power lighting wires. Double white cores are used for direct connection of lamp head line, red and blue cores are used for fire alarm and so on. Red and white core is used for broadcasting and telephone lines. Red and black core is used for broadcasting line.
3. Used for connecting amplifier and audio equipment, broadcasting system to transmit audio signal amplified by amplifier.
4. Structure: Insulation: fire-resistant PVC insulating material
1、Stranded fine copper wire conductor
2、Fire-resistant mica winding
3、Fire-resistant or low smoke and halogen free insulation
Fire-resistant cables are widely used in high-rise buildings, underground railroads, underground streets, large power stations and important industrial and mining enterprises and other places related to fire safety and fire life-saving.
