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Industrial Segment |
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Drum Heaters |
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| SELFTRACE
CABLES
Thermo Selftrace Cables are self regulating
heating cables which can be used for freeze
protection of water pipelines, roof & gutter
heating and process temperature maintenance of
pipelines, vessels, tanks, equipments etc., in
domestic, commercial and industrial applications |
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Thermopads offers
Selftrace STS and
Selftrace STW.
Selftrace - STS
is
ideally suited for low temperature
applications such as freeze protection of
potable water pipelines and can be used for
installation on the outside surface of the
pipelines and inside pipelines.
Selftrace - STW is
ideally suited for low temperature
applications such as roof and
gutter heating and can be used for
installation on the roofs and in
gutters for snow / ice melting
and process temperature
maintenance of pipelines, vessels,
tanks, equipments etc., in
domestic, commercial and
industrial applications. |
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Operating Principle :
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Selftrace derives its self-regulating
characteristic from the inherent
properties of the semi conductive core
material.
As the core material temperature increases, the number of
conductive paths in the core
material decreases, thus 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 cable’s
length, adjusting the power output
to the varying conditions. As the
cable self-regulates its heat
output, it limits the maximum sheath
temperature, thus making it burn-out
proof.
Construction:
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Thermo
Selftrace is a self-regulating
parallel circuit heating cable
consisting of a semi-conductive
heating core extruded over
stranded coated copper bus wires.
Heating core is covered with TPE
jacket to provide electrical
insulation, mechanical strength
and moisture resistance. A tinned
copper braid is provided over the
electrical insulation to give a
continuous ground path. An outer
jacket of TPE / Fluoropolymer is
provided for use in corrosive
areas.
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1) Bus wire conductor
2) Semi conductive heating core
3) Primary insulation jacket
4) Metal Braid
5) Outer jacket |
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TECHNICAL
SPECIFICATIONS:
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Bus wire Conductor |
Coated Copper |
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Heating Element |
Semi Conductive core |
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Primary Insulation jacket |
Thermo Plastic Elastomer (TPE)
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Metal braid |
Tinned Copper |
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Outer Jacket |
Thermo Plastic Elastomer (TPE)
or Fluoropolymer |
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Minimum Temperature |
-30°C
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Maintain Temperature |
65°C
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Max. Exposure Temperature |
65°C
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Bending radius |
35mm (inner side)
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Linear power output |
10, 15, 17, 25, 31 W/m when
measured at 10°C
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Supply Voltage |
230V A.C |
Power Output
Curves:
Power Output
Curves For
Selftrace - STW:
Product
Range, Circuit Breaker Selection
and maximum Lengths:
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Catalog Number |
Output at 10Deg C |
Maximum Circuit Length |
Circuit Breaker Size |
Maximum Maintenance
Temperature |
Maximum Exposure Temperature |
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STS - 10*
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10 W/m |
100/60* |
10A |
65°C
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65°C
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STS - 15 |
15 W/m |
72 |
10A |
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STW – 17 |
17 W/m |
154 |
16A |
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STW – 25 |
25 W/m |
124 |
20A |
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STW – 31
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31 W/m |
110 |
25A |
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* STS-10 is offered for inside pipe application with
flouropolymer over jacket.
Maximum length of heat tracer
for inside pipe application is
60M.
Note:
1) Circuit breakers are sized
based on start-up temperatures
at 10°C.
2) Earth leakage circuit
breaker (ELCB) is recommended
for each heating circuit.
Sensitivity of the ELCB should
not exceed 30 mA. |
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Accessories:
We offer full range of
accessories required for power
connection, end connection,
splice connection and
temperature controllers
For
more details and business queries please
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