Heating Cables – Longline (HTP3F)
Longline (HTP3F) is a constant power heating cable with a three-phase series resistance design, intended for freeze protection or temperature maintenance of process pipelines over moderate lengths, up to 2 km. A typical application is the freeze protection of above-ground water pipes.
This heating cable reduces the number of required power supply points, thereby lowering installation costs related to power cabling and distribution equipment. Circuits are often powered only at the ends of the pipeline.
The heating conductors are sized to deliver the required power based on the circuit length. Longline (HTP3F) heating cables are connected directly to a three-phase power supply or via a step-up transformer.
Thanks to its flat ribbon construction, HTP3F offers an extended heating surface, enabling lower operating temperatures compared to equivalent round conductors. This enhances safety and increases system lifespan.
Please contact us for any specific requirements.
Longline (HTP3F) constant power heating cable provides reliable freeze protection and temperature maintenance for long pipelines up to 2 km. Designed for three-phase systems, it combines high thermal efficiency, simplified installation from a single power feed, and consistent performance up to 23 W/m, even at 600 V AC.
Product Specifications – Maximum Allowable Temperature: 125 °C (257 °F)
Maximum Permissible Temperature (de-energized)
| 125°C (257°F) |
Minimum Installation Temperature | -40°C (-40°F) |
Power Supply | Up to 600 V – Three-phase |
Cable Dimensions | HTP3F-CT 25.0 x 7.0mm +/- 0.5mm |
Weight kg/100 m | HTP3F-CT - 65.0 kg |
Minimum Bending Radius | 75mm |
Maximum Temperature of Heated Medium (°C)
Rated Heating Cable Power (W/m) | HTP3F | HTP3F-C | HTP3F-CT |
|---|---|---|---|
10 | 112 | 109 | 100 |
15 | 94 | 95 | 85 |
23 | 78 | 80 | 70 |
Surface Temperature Limits According to EN 50014 Standard | |||
HTP3F constant power heating cable is ideal for freeze protection or temperature maintenance of medium to long pipelines, especially above-ground or buried water pipes. Thanks to its three-phase constant power design, it enables heating circuits of great length — up to 2 km — to be powered from a single point, thereby reducing costs related to wiring and distribution equipment.
Its flat conductor structure maximizes the heated surface area, limiting operating temperature for enhanced safety and extended system lifespan. HTP3F heating cable is well suited for industrial installations requiring power supply up to 600 V AC and consistent performance even under demanding conditions, with a maximum permissible temperature of 125 °C.
Example applications:
-Long pipelines (up to 2 km)
-Buried pipes
-Three-phase heating systems
Longline Heating Cables (HTP3F) are used in the following sectors:
-Chemical & Petrochemical
-Machine Manufacturing
-Construction
-Water Treatment and Distribution
-Food Industry
-Other Industries
This list is not exhaustive.
