CWM - Constant Wattage Medium Temperature Cables
Designed for faster installation to reduce your labor time
Long service life in hostile environments
About the Product
Chromalox CWM constant wattage heating cable is a proven, reliable solution for industrial process temperature maintenance and freeze protection. CWM features a parallel heating core that produces uniform thermal output over its entire length. Using a single power point, you can easily configure and install a heat tracing system as short as several feet or as long as 780 feet right in the field. With 392°F (200°C) fluoropolymer electrical insulation over-jacketing, CWM has outstanding electrical and thermal properties, and is well suited for most chemically hostile environments.
Chromalox CWM Constant Wattage Heating Cables are ideally suited for applications where a particular watt density is required at all times. The heater element consists of a nichrome wire wrapped around parallel, insulated buss wires.
WARNING — A ground fault protection device is required by NEC to minimize the danger of fire if the heating cable is damaged or improperly installed. A minimum trip level of 30mA is recommended to minimize nuisance tripping.
CWM - Constant Wattage Medium Temperature
+ Durable, non-aging fluoropolymer jacket ensures long service life and can be used in some hostile environments.
+ Flexible, easy to install on most equipment and delivers long-term reliable performance.
+ Eliminates the need for oversized wiring or switchgear.
+ Accurate temperature, reliable electric heat that can be consistently controlled and easily monitored.
+ Safe and rugged.
+ Parallel circuitry allows cut-to-length.
+ High performance, rated to withstand up to 392°F saturated steam (190 psig) temperature (power off).
+ Low profile, uses standard size thermal insulation on piping and process equipment.
+ Freeze Protection
+ Freeze Protection, High Exposure Temperature
+ Process Maintenance, Low Temperature
+ Process Maintenance, High Temperature
CWM Selection Guide
CWM Heat Trace Cable Features
Max. Maintenance Temp. (°F) 320
Max. Exposure Temp. (°F) Power Off 400
Max. W/Ft. 12
Max. Circuit Length (Ft.) 225 - 900
Buss Wire Size 12
Voltages 120, 208-277, 480
Hazardous Ratings Yes
Usable on Plastic Pipe No
Cut-to-Length in Field Yes
Field Splicable Yes
Can be Overlapped No
Output Varies with Temp. No
Varies Output Along Length No
Monitor Wire Available Contact Factory
CWM Corrosion Selection Guide
Moisture C, CT
Aqueous Solutions of Inorganic Compounds CT
Liquids Organic Chemicals Acids or Bases CT
Acids or Bases CT
C - Tin-Plated copper metallic braid for additional protection and ground path
CT - Fluoropolymer corrosion resistant overjacket over braid for hostile/corrosive environments
This is a recommendation guide. Chromalox cannot warrant any Electric Heat Trace against failure by sheath degradation if such failure is the result of operating conditions beyond the control of the heater manufacturer. It is the responsibility of the purchaser to make the ultimate choice of sheath material based on knowledge of the chemical composition of the corrosive solution, character of materials entering the solution, and controls which maintains the process.
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Chromalox heat trace solutions offer a safe, reliable and efficient way for freeze protection and process maintenance of pipes, valves, and tanks in the most extreme conditions.