Resistance cables
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When using resistance heating cables, you don't need to do as much calculating, since the cables are cut to length on site.
Resistance heating cables are fitted with a temperature-dependent resistive element placed between two parallel copper conductors. Once connected, current flows through the resistive element, which starts to heat up. As the element heats up, its electrical resistance increases, which causes the current to decrease and the heating output to drop.
In cases where the air temperature is low, the element's resistance is also low, which will mean a high initial current load. This means the fuses must be sufficiently rated for this. In very cold regions, the starting current can be limited using a soft starter, a device that regulates the initial current load. If you want to reduce energy consumption, it is recommended to use a thermostat for cables longer than 3 m.
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Hello, is it possible to use your products (heating cable) indoors as well, applied under the plaster of vertical walls as supplementary heating, to prevent wall dampness and mould in winter? Thank you.
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Hello, yes, this is a commonly used approach. Besides the cable, you also need a thermostat with a cable sensor to regulate the temperature of the heated wall - e.g. Devireg 530. Have a nice day.
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hello, I'd like to ask about the /Twin-conductor resistance heating cable DEVIflex 18T, length 34/. You write that a soft start is needed there; we need to put it on a pipe into a water tank, one company installed it at a neighbouring cooperative and didn't fit a soft start there. So I'd like to ask whether this start is really necessary. Thanks, Husar tel.:0907500300
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Hello. Unfortunately, we can't answer your question. Have a nice day.