The PNSV-1,2 wire with a steel core and with polyvinyl chloride insulation is designed for heating monolithic concrete, and is also used in floor heaters that operate under a voltage of 380 Volts AC. It is also used for heating industrial facilities in the oil and gas industry. At a low temperature of concrete from 5°C and below, there is a need for uniform heating of concrete for better solidification. Currently, heating concrete with a heating wire is the most common. The reasons for this are the relatively low cost of the wire, the well-developed technology of its application. In addition, the heating wire has an undeniable advantage over heating mats - all the heat released by the wire passes directly into the concrete body. The PNSV wire can be used to warm up any structure, including the floor, but it is most often used for heat treatment of floors, staircases and marches.
AC voltage up to 380V;
The estimated length of the wire section at a voltage of 220 V is 110 m;
Specific heat dissipation power of the wire:
for reinforced structures: 30-35 W/p. m,
for non-reinforced structures: 35-40 W / p. m;
Recommended supply voltage: 55-70 V;
Average core resistance: 0.15 ohms/m;
Specific power: 1.5-2.5 kW / m3;
Consumption of PNSV 1.2 mm wire: 50-60 p. m./m3 of concrete
Thermos holding cycle of structures: 1-3 days
Heating cable PNSV - the optimal solution for winter concreting. This is a wire with a steel core, which is used for heating monolithic concrete and reinforced concrete structures.
PNSV wire consists of a steel core having a round shape, and an insulating coating of PVC plastic or polyethylene.
Heating wire PNSV, adapted for heating monolithic concrete structures in the winter, is most in demand in modern industrial construction.
PNSV wire is resistant to ambient temperature changes in the range from -60°to 50°C;
maximum possible operating temperature 80°C;
laying and fixing of the cable must be carried out at a temperature not lower than -15°C;
the wire is resistant to water or 20% salt solution and 30% alkali solution;
during installation, the wire should be bent so that the bending radius is at least five times the outer diameter. Please note that the minimum allowable bending radius is 25 mm.;
when installing, the wires should not be crossed or placed too close, the minimum step width between the wires is 15 mm.;
the cable is designed to operate repeatedly in a short-term mode or for a long period without interruptions;
the service life of the heating PNSV cable is from 16 years.
Creating a system of internal heating of concrete with the help of PNSV wire, you improve its properties and accelerate the process of hydration of concrete, which is a very significant factor when pouring concrete in the winter. By ridding the concrete of excess moisture, you prevent the risk of cracks, breaks and corrosion in the body of the concrete structure.