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Longline (HTS3F)

Products > Series (Longline) Heaters > Longline (HTS3F)

Product Features

ATEX - European Hazardous Area Approval FM - North American Hazardous Area approval

Longline (HTS3F) is a series resistance, three phase constant power heating cable used for freeze protection or process temperature maintenance of moderately long pipelines up to 2km, in safe or hazardous areas. A typical application is the temperature maintenance of crude or fuel oils in above ground or buried transfer lines. 

Longline (HTS3F) 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.
Heating conductors are sized to produce the desired heat output for the circuit length required. The Longline (HTS3F) heating cables are connected directly to the 3 phase mains voltage or to a step-up transformer.
The large heated surface of Longline (HTS3F)’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 60W/m.
Longline (HTS3F) heating cable may be straight traced or spiral traced to above ground pipes. The insulation material is silicone rubber ensuring the cable is very flexible. For buried lines, cables are usually drawn into channel raceways within a pre-insulated pipeline system. The installation of Longline (HTS3F) 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 230°C (446°F)

Longline (HTS3F) is available in outputs upto 60 W/m as illustrated on the graph to the right.  The graph shows the nominal power output at 480V 3 phase, 1000 metre long pipe with 3 x 4mm² conductors, 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

HTS3F-xS 230°C (446°F)
HTS3F-xF 205°C (401°F)

Maximum Energised Temperature HTS3F-xS 208°C (406°F)
HTS3F-xF 192°C (378°F)
Minimum Operating Temperature -80ºC (-112ºF)

Power Supply

 Upto 600V 3 Phase

Cable Dimensions

HTS3F-xS 23.0 x 9.0 mm
HTS3F-xF 22.4 x 8.0 mm

Click on the graph to see a larger version.
Nominal power output  against pipe temperature

Approvals and Certification
HTS1,2,3 03ATEX3292
EU DoC HTS1F, 2F, 3F
Product and Application Datasheets
HTS3F Datasheet
Long Pipes above ground
Long Pipes Buried

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