Series Constant-Wattage Heat Tracing Cable
Heat Tracing Products

Series Constant-Wattage Heat Tracing Cable

The series constant-power heat tracing cable uses a metal conductor with a specified resistance as the heating element. When energized, it continuously generates heat along the entire finished circuit through Joule heating. It is suitable for long-distance pipelines, valves, pump housings, and instrument lines that exceed the length limitations of self-regulating and parallel constant-power electric trace heating circuits. Freeze protection, insulation, and process temperature maintenance for the longest 3.6 km circuit can be completed from a single power supply point.

Rated Voltage
220V / 380V / 660V AC
Structural Form
Single-core, double-core, three-core series constant power circuit
Longest Single Circuit
3.6 km
Output Power
Designed as a complete set according to supply voltage, finished product length, and conductor resistance
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Product highlights

  • The series resistance circuit provides a stable heat output per unit length along the entire finished length.
  • A single circuit can reach up to 3.6 km, suitable for reducing the number of power supply points for long pipelines.
  • Available in single-core, double-core, and triple-core structures to accommodate different voltages and electrical connection methods.
  • Multi-layer protection composed of high-temperature fluorinated insulation, tinned copper braid, and high-temperature fluorinated outer sheath.
  • Circuit length, supply voltage, conductor resistance, and target power must be designed as a complete set.

Technical specifications

Rated Voltage
220V / 380V / 660V AC
Structural Form
Single-core, double-core, three-core series constant power circuit
Longest Single Circuit
3.6 km
Output Power
Designed as a complete set according to supply voltage, finished product length, and conductor resistance
Maximum Exposure Temperature
205°C
Minimum Installation Temperature
-60°C
Minimum bending radius
Not less than 5 times the product outer diameter
Heating element
Metal heating conductor with specified resistance
Insulation and sheath
High-temperature fluorine-containing insulation + tinned copper braid layer + high-temperature fluorine-containing outer sheath
Applicable Occasions
Anti-freezing, insulation, and process temperature maintenance for long-distance pipelines, valves, pump bodies, and instrument lines
Installation Restrictions
Supplied as a complete circuit according to the designed length; cannot be arbitrarily cut or extended on site
Control and Protection
Equipped with corresponding temperature control, overload, short circuit, leakage, grounding, and cold-end connection protection
Heat Tracing Products

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Low-Temperature Self-Regulating Heat Tracing Cable
01

Low-Temperature Self-Regulating Heat Tracing Cable

The low-temperature self-regulating heat tracing cable uses two parallel bus wires and a PTC semiconductor polymer heating core tape. The core tape automatically adjusts output according to local pipe temperature changes: power increases when the temperature drops and decreases when the temperature rises. It is suitable for freeze protection, anti-freezing, and maintaining process temperatures up to 65°C for pipelines, valves, tanks, and equipment in water supply and drainage, fire protection, petrochemical, and other industries.

  • PTC core tape adjusts heating output segment by segment, adapting to different heat dissipation at various pipe positions
  • Parallel busbar structure, can be cut to installation size within the specified maximum loop length
  • self-regulating feature reduces the risk of continuous overheating at overlapping installation positions
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Medium-Temperature Self-Regulating Heat Tracing Cable
02

Medium-Temperature Self-Regulating Heat Tracing Cable

The medium-temperature self-regulating heat tracing cable uses parallel bus wires and PTC semiconductor polymer heating core tape, which can automatically adjust the output according to local temperature changes of the pipeline. It is suitable for antifreeze, anti-condensation, and 0–105°C process temperature maintenance of industrial pipelines, valves, storage tanks, and equipment in petroleum, chemical, steel, and power industries.

  • The PTC core tape adjusts the heating output in segments to compensate for heat loss variations at different positions of the pipeline.
  • The parallel loop structure allows cutting according to installation size within the specified maximum loop length.
  • 35 / 45 / 50 / 60 W/m power levels cover medium-temperature antifreeze and process temperature maintenance requirements.
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High-Temperature Self-Regulating Heat Tracing Cable
03

High-Temperature Self-Regulating Heat Tracing Cable

The high-temperature self-regulating heat tracing tape uses a semiconductor self-regulating heating core tape and parallel circuits that can be cut on-site. It automatically adjusts output along the heating loop according to ambient temperature and thermal loss of the insulation layer. It is suitable for frost protection and maintaining a process temperature up to 150°C for high-temperature process pipelines, valves, instrument lines, storage tanks, and equipment, and can withstand intermittent high temperatures caused by steam purging.

  • The semiconductor heating core tape adjusts output section by section along the loop to compensate for local heat loss changes.
  • The parallel loop structure allows cutting to on-site dimensions within the specified maximum loop length.
  • 10 / 20 / 30 / 39 / 49 / 66 W/m power ratings cover different high-temperature maintenance loads.
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