Longline HTP1F & HTP3F

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 (HTP3F) 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. A typical application is the freeze protection of above ground water pipelines.

Longline HTP 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 HTP heating cables are connected directly to the 3 phase mains voltage or to a step-up transformer.

The large heated surface of Longline HTP'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 2km (HTP3F) or 5km (HTP1F)
• Single supply point, minimises supply cabling costs
• Available up to 600VAC
  

Product Specification - maximum withstand temperature 125°C (257°F)