Self Regulating Heating Cable Principle

The electrical resistance of the matrix increases as its temperature rises until the cable reaches thermal equili.

Self regulating heating cable principle.

The principle of temperature self regulation. Self regulating heating cables offer protection against burst water pipes frozen roof gutters ice or snow covered ramps stairways and walkways. Cable can be arbitrary cut short or in a certain range of long use and the performance does not change. The electrical resistance of the matrix increases as its temperature rises until the cable reaches thermal equili.

With the heating system temperature changes automatically adjust the output power without the need of additional equipment. Self regulating heating cables self regulating self limiting heating cable often called heat trace cable or heating tape automatically adjusts heat output based on surface temperature. Power is controlled either by a contactor or a solid state controller. Self regulating heat cables operating principle a self regulating heat cable consists of a semi conducting matrix fitted between two conductors to which an electrical current is applied.

The outer jacket braide and inner jacket provide mechanical electrical and chemical protection. How does this principle work in self regulating heating cables. Ideal for freeze protection and low temperature process maintenance such as water pipe heating and roof gutter freeze protection. Trace heat cables may be connected to single phase or in groups to three phase power supplies.

1 1 self regulating heating cable advantages heating can automatically limit working temperature of cable. Self regulating heat tracing cables. This video courtesy of raychem provides a short but informative understanding of how self regulating heat tracing cable sometimes referred to as heat tap. The cable itself adjusts its heat output in response to change of the ambient temperature.

The principle of self regulating cable operation is illustrated below by an example of pipe heating. The use of these systems provides a reliable and long term solution to costly damage or operational disturbances. Self regulating heat cables o perating principle a self regulating heat cable consists of a semi conducting matrix fitted between two conductors to which an electrical current is applied. For self regulating cable the supply must furnish a large warm up current if the system is switched on from a cold starting condition.