SCS Self-Regulating Heater Cable

Description:

Serge Basil Type SCS self-regulating heater cable is a parallel circuit electric heater strip. A conductive fluoropolymer core material is extruded over the multi-stranded, nickel-plated 16-gauge copper bus wires. A fluoropolymer jacket provides excellent dielectric strength, moisture resistance, protection from impact and abrasion damage, and a wide range of chemical resistance.

The tinned copper braid gives an acute mechanical protection as well as a conductive ground path. The optional fluoropolymer overjacket can be specified when the cable is to be used in wet or corrosive areas.

Principle of Operation:

The parallel bus wires apply voltage along the entire length of the heater cable. The conductive core provides a continuous parallel heating element permitting the cable to be cut to any length in the field with no dead or cold zones developing. The heater cable derives its self-regulating characteristic from the inherent properties of the conductive core material. As the core material temperature increases, the number of conductive paths in the core material decreases, automatically decreasing the heat output. As the temperature decreases, the number of conductive paths increases, causing the heat output to increase. This occurs at every point along the length of the cable, adjusting the power output to the varying conditions along the pipe.
The self-regulating effect allows the cable to be overlapped without creating hot spots or burnout. As the cable self-regulates its heat output, it limits the maximum sheath temperature, while also providing useful power for process temperature maintenance.

Application:

Serge Baril Type SCS self-regulating heater cable is ideal for maintaining fluid flow over a wide range of operating temperatures. The product is used for freeze protection of periodically steam (200 psig) cleaned pipes and temperature maintenance for 250^oF or lower processes. Typical applications include hydrocarbon and chemical product piping.

Options: (Specify Option Indicated)

-SS: A stainless steel metal braid is available for use in dry, corrosive areas where mechanical abuse is a problem. Stainless steel metal braid is not recommended for use as a conductive ground path.

-BT: A tinned copper metal braid with a fluoropolymer overjacket is available for use when the heater cable is exposed to excessive moisture, organic chemicals, solvents, etc. in hazardous (classified) areas and ordinary areas.

Catalog Numbers:

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