Self Regulating Heat Tracing | Eltherm ELSR-FHP ATEX Heat Tracing Cable (Up to 110 Degrees Celsius)
Thorne & Derrick | Distributed from Stock | UK & Export Sales | Customer Service Excellence | ATEX Compliant Solutions
Self Regulating HeaT tRACING Cables
Eltherm ELSR-FHP is a versatile self-regulating heat tracing cable that provides process temperature maintenance and frost protection to pipework, instrument lines, tanks and drums up to 110° Celsius – with IECEx and ATEX Certification Eltherm ELSR-N heat tracing cables are suitable for Zone 1 and Zone 2 hazardous areas.
The self-regulating technology allows the heating cable to increase or decrease its heat output based on the ambient temperature, providing energy-efficient operation and preventing overheating. ELSR-FHP is suitable for use in various industrial applications where maintaining consistent temperatures is critical for process integrity and safety including:
- Freeze prevention
- Silos, vessels, tanks
- Cryogenic Storage Tanks
Our Team of Trained Sales Engineers are available to advise and support your ATEX heat tracing enquiries – this includes design and supply of complex multi-kilometre, major-project systems to custom heat trace cable kits for the protection of winterisation against plant and factory facilities.
ELTHERM ELSR-FHP heat tracing CABLE – SPECIFICATION
Eltherm ELSR-FHP self-regulating trace heating wattages per metre at 5°C – 23, and 38 watts.
- Nominal Supply Voltage : 230v
- Maximum Cable Exposure Temperature – Power off: 110ºC, 80ºC
- Maximum Cable Exposure Temperature – Power on: 80ºC, 65ºC
- Minimum Installation Temperature : -45° Celsius
- Minimum Heater Cable Bend Radius : 50mm
- Heater Cable Outer Jacket: Fluoropolymer
- Bus Wire: Nickel plated copper
- Bus wire – Nickel plated Copper
- Self-regulating heating element
- Insulation
- Protection: Protective braid (Cu, tin plated)
- Outer jacket – Fluoropolymer
Eltherm ELSR-FHP self-regulating heating cables are available in the BO design. The BO version of the ELSR-FHP heating cable has a protective tin-plated copper braid to adapt to low-temperatures and medium temperature applications.
Hazardous Area Classifications 
Heat Tracing Classification:
- II 2G Ex e IIC Gb
- II 2D Ex tb IIIC TX Db
Hazardous Area Certification:
- 14ATEX1653X
- IECEx EPS 14.0021U
Temperature Class: T5
Eltherm ELSR-FHP Heating Cable Benefits
- Highly robust
- Suitable for harsh installed environment
- Flexible mounting
- Waterproof
Eltherm ELSR-FHP heating cables provide process temperature maintenance and frost protection to pipework, instrument lines, tanks and drums up to 110° Celsius – with IECEx and ATEX Certification Eltherm ELSR-N trace heating cables are suitable for Zone 1 and Zone 2 hazardous areas. Typical applications include heating process pipework, instrument lines and storage tanks to maintain viscosity or prevent frost damage as an integral work-task of plant Winterisation.
Eltherm ELSR-FHP cables utilise cold-applied installation components to complete the trace heating system – no requirement for “hot-working” permit applications in potentially explosive atmospheres, including Zone 1 and Zone 2 hazardous areas.
elsr-fhp heating Circuit Length
Contact T&D for technical guidance, heat loss calculations for pipework systems and optimum specification of the correct trace heating cable for your application.
| Eltherm ELSR-FHP Heater Cable | Nominal Output | Cable Dimensions (mm) | Cable Weight Approx (g/m) |
| ELSR-FHP-23 | Approx 23 w/m at 5ºC (in 25mm / 1″ conduit) | 14 x 5.5 | 155 |
| ELSR-FHP-38 | Approx 38 w/m at 5ºC (in 25mm / 1″ conduit) | 14 x 5.5 | 155 |
ELSR-N Heating circuit length
| Switch on temperature [°C] | Nominal fuse rating [A] | Heating circuit length*1 [m] | |
| ELSR-FHP-23 | ELSR-FHP-38 | ||
| -5 | 10 | 30.0 | 23.0 |
| 16 | 48.0 | 36.0 | |
| 20 | 60.0 | 45.0 | |
| 25 | 75.0 | 72.0 | |
| 32 | 97.0 | 91.0 | |
| 40 | 121.0 | 21.0 | |
| -15 | 10 | 23.0 | 34.0 |
| 16 | 37.0 | 43.0 | |
| 20 | 46.0 | 54.0 | |
| 25 | 57.0 | 68.0 | |
| 32 | 74.0 | 85.0 | |
| 40 | 92.0 | 85.0 | |
*1 Heating circuit lengths on the following conditions:
- 230 V nominal voltage
- Delayed action circuit breakers (C-characteristic) with 110 % max. load
- Maximum 10 % line voltage drop on heating cable bus wire
- Power connection to one heater end
- In certain installation situations, the heating circuit length may vary. Please contact T&D
Eltherm ELSR-N HEATer CABLES
Eltherm video providing a step-by-step termination of ELSR-N heater cable using a EL-ECN termination kit.
Self-Regulating heat tracing System
A Trace Heater
B Power Connection Kit
C End Termination Kit
D Junction Box
E Pipe Mounting Bracket
F Fasteners and Self-adhesive Tapes, Foils
G Insulation Bushing
H Warning Sign
I Temperature Controller
J Temperature Sensor
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Eltherm ELSR-FHP Heater Cable – Self Regulating Heat Tracing Cable – Data Sheet
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