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Longline (HTP1F)

Products > Series (Longline) Heaters > Longline (HTP1F)


Product Features

Longline (HTP1F) is a series resistance, single conductor heating cable . It is supplied in multiples of three cables for configuring into a 3 phase heating system. It is used for freeze protection or process temperature maintenance of long pipelines up to 5km. A typical application is the freeze protection of above ground water pipelines.

Longline (HTP1F) minimises the number of electrical supplies needed and so minimises supply cabling and distribution equipment costs. Circuits are often fed at the pipe ends only.
The number of heating cables and their conductor size is varied to produce the desired heat output for the circuit length required. The Longline (HTP1F) heating cables are connected directly to the 3 phase mains voltage or to a step-up transformer.
The large heated surface of Longline (HTP1F)’s flat foil construction results in lower operating temperatures than equivalent round conductor constructions thereby improving safety and system life. The high efficiency produces high power capability up to 23W/m for each cable.
Longline (HTP1F) heating cable may be straight traced or spiral traced to above ground pipes. For buried lines, cables are usually drawn into channel raceways within a pre-insulated pipeline system. The installation of Longline (HTP1F) is quick and simple and requires no special tools. See Product, Application and Documentation Links below.

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Product Specification

Maximum Withstand Temperature 135°C (275°F)

Longline (HTP1F) is available in outputs upto 23 W/m as illustrated on the graph to the right.  The graph shows the nominal power output at 480V 3 phase, 1500 metre long pipe with 1 x 12mm² conductor but with 3 cables, when installed on insulated metal pipes.  The output of the cable is varied by changing the voltage or the size of the conductors.  Click on the graph to see a larger version.

Maximum Withstand Temperature 135°C (275°F)
Maximum Energised Temperature 100°C (212°F)
Power Supply Upto 600V 3 phase
Cable Dimensions 27.0 x 9.0 mm

Click on the graph to see a larger version.
Nominal power output  against pipe temperature
Product and Application Datasheets
HTP1F Datasheet
Long Pipes above ground
Long Pipes Buried

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