Longline (HTP1F)

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.

Example of Applications

  • Long pipelines
  • Buried pipelines
  • 3-Phase heating systems

Benefits

  • Circuit lengths up to 5km
  • Single supply point, minimises supply cabling costs
  • Available up to 600VAC
  • Product Specification - maximum withstand temperature 125°C (257°F)
    Longline (HTP1F) is available in 10, 15, and 23 W/m outputs.

    Maximum Withstand Temperature

    ( Power off )

    125°C (257°F)

    Minimum Installation Temperature

    -40°C (-40°F)

    Minimum Operating Temperature

    -60°C  (-76°F)

    Power Supply

    up to 600V 3-Phase

    Cable Dimensions

    HTP1F-CT 22.0 x 8.0mm +/- 0.5mm (16mm²)

    Weight kg/100m

    HTP1F-CT - 65.0 kg (16mm²)

    Minimum Bending Radius

    75mm (16mm²)

    Maximum Workpiece Temperatures (°C)

    Heater Nominal Output (W/m)

    HTP1F

    HTP1F-C

    HTP1F-CT

    10

    112

    109

    100

    15

    94

    95

    85

    23

    78

    80

    70

    Surface temperature limits in acordance with EN50014

Product Instructions