Другие характеристики:
APPLICATION
Heating wire with steel conductor is designed for heating of monolithic concrete and ferro-concrete, and also for floor heaters at AC voltage up to 380V nominal frequency 50 Hz or DC voltage up to 1000V.
DESIGN
CONDUCTOR - steel single-wire.
INSULATION - PVC-compound (ПНСВ, ПНЖВ) or polyethylene (ПНСВ, ПНЖП). Nominal insulation thickness is 0,8 mm.
TECHNICAL DATA
Electric resistance of insulation for 1 km at the temperature +20°C is not less than 1 МОhm.
Wires can operate at an ambient temperature from -60°C to +50°С.
Maximum permissible temperature of insulation is +80°С.
Permissible temperature at laying is not below -15°C.
Cables resist to water and to 20 % water solution of salt or 30 % alkaline solutions of Ca (OH) 2 or NaOH.
Bending radius of wires at installation is not less than 5 outer diameters of wire.
Assembled wires should not be crossed or touch to each other, permissible distance between assembled cables is not less than 15mm.
Power to heating section is supplied by "cold" ends, the joining of heating conductor and "cold" end is recommended to remove from warmed zone.
The "cold" end and heating wires are recommended to solder with the help of copper wire bandage, terminal boxes or sleeves.
For achievement of uniform thermal field the assembled wires are recommended to cover with metal-foil of 0,2-0,5 mm.
Service life of wires is not less than 16 years.
