The nVent RAYCHEM HBTV family of self-regulating heating cable provides the solution to heat tracing applications that include pipe freeze protection and process temperature maintenance for CID1 areas. RAYCHEM HBTV electric heat trace cable maintains process temperatures up to 150°F (65°C) and can withstand intermittent exposure to temperatures up to 185°F (85°C). The RAYCHEM HBTV heat trace cables are approved for use in hazardous (CID1) areas, including areas where corrosives may be present.

Additional Product Information:

  1. RAYCHEM HBTV heat trace cables are configured specifically for use in hazardous locations
  2. RAYCHEM HBTV heat trace cables are configured for use in areas where corrosives may be present
  3. RAYCHEM HBTV heat trace cables meet the requirements of the U.S. National Electrical Code

Industries Served:
Chemical and Pharmaceutical
Food and Beverage
Oil and Gas

Technical Specifications

  1. The heating cable shall consist of two 16 AWG or larger nickel-plated copper bus wires, embedded in a self-regulating polymeric core that controls power output so that the cable can be used directly on plastic or metallic pipes. Cables shall have a temperature identification number (T-rating) of T6 (185°F or 85°C) without use of thermostats.
  2. A ground-fault protection device set at 30 mA, with a nominal 100-ms response time, shall be used to protect each circuit.
  3. The heating cable shall have a tinned copper braid with a resistance less than the heating cable bus wire resistance as determined in type test (ASTM, B193, Sec. 5). The braid shall be protected from chemical attack and mechanical abuse by a modified polyolefin or fluoropolymer outer jacket.
  4. In order to provide rapid heat-up, to conserve energy, and to prevent overheating of fluids and plastic pipe, the heating cable shall have the following minimum self-regulating indices:

    Minimum Self-Regulating Indices
    Heating cable S.R index (W/°F) S.R index (W/°C)
    3 W/ft 0.038 0.068
    5 W/ft 0.060 0.108
    8 W/ft 0.074 0.133
    10 W/ft 0.100 0.180

    The self-regulating index is the rate of change of power output in watts per degree Fahrenheit or watts per degree Celsius, as measured between the temperatures of 50°F (10°C) and 100°F (38°C) and confirmed by the type test and published data sheets.
  5. In order to ensure that the self-regulating heating cable does not increase power output when accidentally exposed to high temperatures, resulting in thermal runaway and self ignition, the cable shall produce less than 0.5 watts per foot (1.64 watts per meter) when energized and heated to 350°F (177°C) for 30 minutes. After this test, if the cable is reenergized, it must not have an increasing power output leading to thermal runaway.
  6. The self-regulating heating cable shall be specifically FM Approved or CSA Certified for use in Division 1 locations.
  7. A ground-fault protection device set at 30 mA, with a nominal 100 ms response time, shall be used to protect each circuit.
  8. The temperature identification number (T-rating) of the cable used shall comply with FM and CSA requirements as applicable.
  9. Connection methods used with the cable shall be compatible and approved as a part of the system manufactured and supplied by the heating cable vendor for use in the Division 1 location.
  10. The heating cable shall have continuous exposure capability up to 150°F (65°C) and intermittent exposure capability up to 185°F (85°C).

For detailed product specifications, please refer to the product datasheet


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