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Self Regulating Heating cable

Self Regulating Heating cable

MI Heating Cables

Self regulating heating cables that automatically adjust their power output to compensate for temperature changes. Self regulate heat trace cables are the advance technology in electric heating cables. They are designed and manufacture  to regulate their output according to process temperature i.e. as the process temperature go down , the cable’s output increases; opposite, as the temperature rises, the cables output decreases. Self regulating heating cable contain  a polymer core extruded onto two parallel conductors. The core consist semi-conductive material that is high in carbon content usually “graphite”, which allows electricity to flow from one bus wire to the other and create infinitely parallel resistors. The core’s resistance changes proportionally with temperature changes and the output varies along the length of the cable depending upon the temperature of the core of the heater. The fundamental principle of operation is that “when the temperature of the core increases or decreases, a change in the chemical composition takes place, which results in a increase decrease resistance and more or less heat output watt. This self regulating properties allows the cable to adjust its watt output at any point along the entire length of the heater circuit, helping to remove warm or cold spots.

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Maximum Maintenance  Temperature 120 °C
Maximum Exposure  Temperature 250 ° C
Maximum Circuit Length 245 M
Maximum Out Put [email protected] deg C 63 W/M
T Class T4
Nominal Voltage: 230 V AC
  • Parallel Heating circuit ;
  • These cables are Cut to length according to site complex piping design.
  • Adjust the power output i.e. increases power as temperature falls and decreases as temperature rises
  • Standard 220/240 V operation;
  • Maximum circuit lengths are typically 150 to 600 ft depending on design.
  • Available in wide variety of wattages generally ranging from a low of about 10 watts/Meter up to 70 watts/meter;
  • Maintain up to 120°C, exposure up to 210°C.


  • Inconstant output, less chance of overheating.
  • Maintains steady temperature profile throughout the pipeline which results in greater energy saving. • Intrinsically safe and can be used in hazardous areas.
  • Cut-to-length in field, easy installation;
  • The heat trace cable once installed, generally do not require any replacement for the entire life of the plant. The self regulating type tracers are usually guaranteed for more than 10 years of working life;
  • Flexible and can be overlapped without burnout;