nVent RAYCHEM XPI-NH Series Resistance Trace Heating Cables


Series resistance trace heating cables for frost protection and temperature maintenance

RAYCHEM XPI polymer insulated (PI) series resistance trace heating cables for frost protection and temperature maintenance applications requiring long circuit lengths.

XPI-NH series resistance heating cables allow for circuit lengths that exceed those of parallel heating cables(typically < 250 m). This makes them particularly suitable for long pipelines and large tanks / vessels. Polymer insulated (PI) trace heating cables can easily be terminated in the field.

  • Continuous withstand temperature 260°C
  • Available in a wide resistance range to cover most applications
  • Power output up to 25 W/m (power output by design)
  • For use in ordinary areas

Key benefits:

  • Requires fewer circuits by allowing circuit lengths up to 5 km from single power supply point
  • Highest reliability and lifetime expectancy in the most severe environments
  • Excellent chemical resistance
  • Easy to terminate in the field
  • Highly reliable connection kits (cold applied)

Unlike many other series resistance trace heating cables, XPI-NH insulating jackets use a PTFE, which retains its mechanical strength over the entire temperature range and offer a variety of benefits. It significantly reduces the risk of typical failure modes of PI cables such as conductor displacement over time at elevated power and temperatures.

TraceCalc Pro design software for safe design and product selection and advanced control and monitoring products complete the XPI-NH trace heating system

Technical Specifications

Maximum power output25 W/m (typical value, depending on the application)
Nominal voltage U0/U300/500 Vac
Max current loading129A (depending on cold lead size)
Maximum continuous withstand temperature260°C
Maximum intermittent withstand temperature260°C
Approved for use in
hazardous areas


Installation Manuals
Connection and Protection