ПНЖВ, ПНЖП, ПНСВ
Heating wires with steel conductor is designed for cast concrete and reinforced concrete heating and for ground-type heaters with 380 V alternating voltage of 50 Hz frequency or up to 1000 V direct voltage.
CONDUCTOR:steel, solid conductor
INSULATION: PVC compound (ПНСВ, ПНЖВ) or polyethylene (ПНЖП).
Insulation rated thickness - 0.8 mm.
NUMBER OF CONDUCTORS: 1
ПНЖВ, ПНСВ models operating temperature range: from -40°С to +70°С.
ПНЖПmodel operating temperature range: from -60°С to +70°С.
Rated radial thickness of wire insulation for ПНЖВ and ПНЖП models with conductor diameter from 1.0 mm to 1.4 mm - 0.8 mm; with conductor diameter from 1.8 mm and above - 1.0 mm.
Insulated conductors color - any. Usage of mixed and transitional colors is allowed.
Electrical wireinsulation resistance for a length of 1 km at a temperature of +20°Сshall be not less than 1 MΩ
Wires are resistant to ambient temperature changes from -60°С to +50°С.
Maximal permissible insulation temperature: +80°С.
Wiringshall be performed at ambient temperature not lower than -15°С
Wires are resistant to the effects of water, 20% sodium chloride-water solution and 30% Ca(OH)2 or NaOHalkaline solutions.
Mounted wires shall not cross or contact each other; wire spacing shall be not less than 15 mm.
To achieve thermal field uniformity, it is recommended to cover the mounted wires with metal foil with 0.2-0.5 mm thickness.
Rated conductor electrical resistance for a length of 1 km at a temperature of +20°С:
Wires operational life - not less than 16 years.
Regulations: Technical Specificationsof The Republic of Belarus500017371.028-2003, Technical Specifications16.К71-013-88