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Large Stock - Application Assistance - 30 Years Experience
  • SELF-REGULATING
    Freeze Protection up to 250°F
  • CONSTANT WATTAGE
    Up to 500°F
  • MINERAL INSULATED
    Up to 1000°F
  • IMPEDANCE HEATING
    Up to 1000°F High Temperature Applications

  • Calculate Heat Requirements for Maintaining A Pipe Temp on the Web:
    @ www.thermalinc.com/math/pipetrace.htm


    Call us at (901) 452-4516 or
    E-mail us at thermalinc@thermalinc.com
    Copyright 2000 Thermal Equipment Sales Co. Inc.
    Thermal Equipment Sales Co., Inc.


    Self-Regulating

    Advantages:
  • Cut to fit in the field.
  • Possible lower operating cost.
  • Possible lower installation cost.
  • Wide variety of wattages
  • Most tolerant to overlapping
  • Low Cost

    Disadvantages:
  • High start-up currents
  • Difficult to precisely control temperature
  • Not well suited for procsss control
  • Low design temperatures
  • Self-regulating cable
            has two parallel conductors or bus wires extruded in a polymer core. The core's resistance changes porportionally with temperature.

    The key to understanding Self-regulating cable is the output adjusts proportionally to the cable sheath temperature not the temperature of the pipe heated.

    There is no direct feed back for the pipe temperature. Most self-regulating cables are designed to give their rated wattage at 50 degrees F. The wattage output will exceed the rated wattage when the cable temperature is below 50 degrees and the lower the cable temperature the larger this wattage i.e. amperage is. INRUSH!!   A high start up current is the result. Tight temperature control is also more difficult with self-regulating cable, because the wattage output is always changing seeking 50 degrees F on the cable not the pipe or fluid in the pipe.

    Self-regulating cable works quite well for freeze protection applications. Freeze protection and low temperature applications that do not require very tight control. The inrush can be considered on the design of wiring and breakers, and there are some other cost savings to consider. We always recommend a thermostat on every cable we sell. However, when there are several very short runs or several pipe size changes one ambient thermostat can save on a job.

    Self-Regulating Cable
    Model # Temperature Range Wattage Voltage Jackets
    SLCAB Series 150 Max Operating Temp
    200 Degrees F
    3 to 10 Watts 120, 208, 240 & 277 B= Tinned Copper Overbraid
    BP = Braid with Thermoplastic Elastomer OverJacket
    BF = Braid with Fluoropolomer OverJacket
    S = Stainless Steel Overbraid
    SLMCAB Series 150 Max Operating Temp
    200 Degrees F
    5 to 15 Watts 120, 208, 240 & 277


    Visit our Math Page to:
    Calculate Heat Requirements for Maintaining Pipe Temp
    @ www.thermalinc.com/math/pipetrace.htm

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    Call us at (901) 452-4516 or
    E-mail us at thermalinc@thermalinc.com
    Copyright 2000 Thermal Equipment Sales Co. Inc.



    Thermal Equipment Sales Co., Inc.


    Constant Wattage

    Advantages:
  • Cut to fit in the field.
  • Easily controlled
  • Built in cold length at every power connection
  • Wide variety of wattage outputs
  • Low cost
  • 480 Volt Cable available
  • Design Temperatures up to 500° F
  • Disadvantages:
  • Requires pipe sensing thermostats
  • Can NOT be overlaped
  • Constant Wattage Cable is made up with two parallel conductors or wires. These wires have a heater wire wrapped around and connected in approximately 2-foot intervals in parallel. This design provides constant wattage output or a uniform output all along its length. The heater wires are designed such that if any section of cable should fail the rest of the heater would continue to operate without change.

    Constant wattage cable should NOT be overlaped. The effect of double the wattage where the cable crosses will cause high temp failures.

    The constant wattage output makes maintaining higher and more accurate process temperatures easier. This cable is well suited for freeze protection and many low temp process control applications.

    This cable can be cut in the field. When terminated the last 2-foot heater section becomes a cold sections "unheated". This provides an unheated section of cable to penetrate the insulation, enter the junction box and make up power connections. Constant Wattage Cable needs a thermostat on each pipe and each pipe size in order to maintain accurate temperature control.

    Constant Wattage Cable
    Model # Temperature Range Wattage Voltage Jacket Overbraid
    FECAB 400° Max
    Operating Temp
    3 to 12
    Watts/foot
    120, 208, 240,
    277 & 480
    Teflon@ B= Tinned Copper Overbraid
    SS = Stainless Steel Overbraid
    KECAB 500° Max
    Operating Temp
    3 to 12
    Watts/foot
    120, 208, 240,
    277 & 480
    Teflon®
    w/Teflon® Overjacket
    B= Tinned Copper Overbraid
    SS = Stainless Steel Overbraid
    KKCAB 500° Max
    Operating Temp
    4 to 18
    Watts/foot
    120, 208, 240,
    277 & 480
    Heat Fused Polyimide B= Tinned Copper Overbraid
    SS = Stainless Steel Overbraid
    KMCAB 500° Max
    Operating Temp
    4 to 18
    Watts/foot
    120, 208, 240,
    277 & 480
    Polimide over Fiberglass B= Tinned Copper Overbraid
    SS = Stainless Steel Overbraid







    Visit our Math Page to:
    Calculate Heat Requirements for Maintaining Pipe Temp
    @ www.thermalinc.com/math/pipetrace.htm



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