Heat Trace Cable

This Factory Mutual approved heat trace cable is for Class I, Division 1, Group B, C and D (hazardous gas and vapor) environments. The cable also meets Factory Mutual requirements for use in Class II, Division 1, Groups F, G (combustible dust), and Class III environments. The type HSRL (low temperature) and HSRM (medium temperature) cables are designed to provide safe, reliable heat tracing for process temperature maintenance, viscosity/fluid flow management, and freeze protection of pipes, valves and tanks. To complete the system, the manufacturer supplies free ChromaTRACE 2.0 design software and the IntelliTRACE system, a complete heat trace control solution consisting of a pre-wired and assembled control panel with a microprocessor, control elements, RS-485 communications interface and Ground Fault Indicator. The heat trace cable terminations, splices, tees and end seal kits reduce installation time and NEMA Type 7 enclosures provide system protection.

The cables are self-regulating and come with T-ratings of T2C, T3, T4A, T5 and T6, corresponding to maximum sheath temperatures in the range of 446°F to 185°F. They are available in a wide range of wattage and voltage ratings, from 3 W/Ft at 120 VAC up to 20 W/Ft at 277 VAC. Circuit lengths up to 780 ft. are possible.

The cables utilize a special semiconductive polymer core matrix bonded to the conductors, which provides self-regulation and makes an over-temperature condition all but impossible. Because the core's electrical resistance varies inversely with temperature, the cables are power efficient, consuming less energy when lower heat is required. A flame-retardant fluoropolymer inner jacket insulates the core and heat trace wires from a tinned copper braid that provides mechanical support and a positive ground path. The outer fluoropolymer jacket is flame-retardant, resists most chemically active corrosives, and protects against abrasion and impact damage. The cables can be cut to length in the field, and single overlapped without fear of burnout.

Chromalox Precision Heat and Control, 701 Alpha Drive, Pittsburgh, PA 15238. Tel: 412-967-3803; Fax: 412-967-5148.