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

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 BACK TO TOP Return to our Home Page 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