Self-limiting electric heating tape, also known as self-regulating or self-controlled electric heating tape, autonomously adjusts the local heating power of the tape based on temperature changes under normal operating conditions.

As shown in the figure, after the busbar applies working voltage, conductive particles in the semiconductor core form a current path between the busbars. As the temperature rises, the semiconductor core expands, reducing the current path and lowering power; conversely, power increases. The conductive carbon particles in the semiconductor core are extremely small, and this regulating mechanism exists at every complete structure of the self-limiting temperature electric heating tape. Therefore, in situations where temperature control is not required, the self-limiting temperature electric heating tape can be used without a temperature controller; any cutting and connection within its usage length will not affect its heating structure, and it can be overlapped without causing overheating damage to the heating structure.

Illustration of Self-limiting Heating Cable for Medium and Low Temperatures

1. Self-limiting temperature heating tape model description

ST: Self-limiting heating cable

□: Rated Power W/m

Q: Reinforce the outer sheath;

STL: Low Temperature Self-Regulating Electric Heating Tape

STH: Medium-High Temperature Self-Limiting Electric Heat Tape

High-Temperature Self-Limiting Electric Heat Tracing Tape

2. Main technical parameters of self-limiting temperature heating tape:

3. Self-limiting temperature electric tracing heating power curve

Low-Temperature Self-Limiting Heat Trace Cable Power Curve Diagram

Medium to High Temperature Self-Limiting Electric Trace Heating Power Curve Graph

High-Temperature Self-Limiting Heating Traceable Power Curve Graph

4. Applicable Locations

Thermal Insulation with Self-Limiting Temperature is suitable for pipeline and equipment frost and condensation prevention in the following situations:

·Safety Zone;

· Hazard Zone 1, 2; Area 21, 22;

·Moist and salt spray environments; corrosive environments (products with fluorine sheathing).

Three-layer co-extruded self-limiting electric heating tape

This product incorporates cutting-edge domestic technology, with its core technology being the one-step extrusion production of the conductor, low-resistance transition layers wrapped around the conductor sequentially, semiconductor core strips, and inner insulating layers. The self-limiting temperature electric heating tape produced using the three-layer co-extrusion technology has a tightly packed structure within the semiconductor core strip's inner insulating layer, which reduces the impact of air, water, oil, and impurities on the various layers of the semiconductor core strip. This, in turn, decreases the attenuation rate and starting current of the semiconductor core strip, enhancing the lifespan of the self-limiting temperature electric heating tape.