کابل هیت تریس خودتنظیم‌شونده ال ترم ELSR-H

6. Cable Construction

The ELTHERM ELSR-H+ features a multilayer construction designed to provide electrical heating, insulation, and additional protection under demanding industrial operating conditions.

Bus Wires

The cable incorporates nickel-plated copper bus wires with a specified cross-sectional area of 1.23 mm². These conductors distribute electrical power along the heating cable and supply the self-regulating heating element.

Self-Regulating Heating Element

The heating element responds to local temperature variations by changing its electrical characteristics. This allows the cable's heat output to adapt to different thermal conditions along the installation.

Electrical Insulation

Fluoropolymer electrical insulation provides separation between conductive components and contributes to the cable's suitability for demanding industrial environments. The insulation must remain intact throughout installation and operation.

Protective Braid

The nickel-plated copper protective braid provides an additional metallic protective layer. Its grounding and electrical connection must comply with the manufacturer's instructions and applicable electrical regulations.

Outer Jacket

The fluoropolymer outer jacket provides an external protective layer intended to support resistance to moisture, chemicals, oil, petrol, and other environmental influences within the product's specified limits. Compatibility must be assessed for the actual installation conditions.

7. Installation and System Design Considerations

Correct system design and installation are essential for reliable heat tracing, electrical safety, and long-term operating performance. The ELSR-H+ must be selected according to the thermal, electrical, mechanical, and environmental requirements of the application.

Heating Load Calculation

Determine the required heating capacity according to the equipment dimensions, operating temperature, minimum ambient temperature, thermal insulation, and expected heat losses. The design must provide sufficient heating output to maintain the required temperature under the specified operating conditions.

Cable Selection

Select the appropriate nominal power rating using the manufacturer's technical data and heating-output curves. The available ELSR-H+ ratings are 15, 30, 45, 60, and 75 W/m. The correct selection depends on the calculated heating demand and actual installation conditions.

Cable Layout and Installation Method

Determine cable routing, spacing, fixing methods, and the number of cable runs according to the required heating output and equipment geometry. Follow the manufacturer's instructions and avoid crossing or overlapping cable sections unless expressly permitted.

Thermal Insulation

Appropriate thermal insulation reduces heat losses and supports effective temperature maintenance. Insulation materials must be compatible with the process temperature and operating environment. Weatherproofing should be considered where moisture could enter the insulation system.

Maximum Heating Circuit Length

Determine the permitted circuit length using the manufacturer's official design tables. The maximum length may depend on cable rating, start-up temperature, supply voltage, protective-device rating, and installation conditions. It must not be estimated from nominal wattage alone.

Electrical Protection

Provide suitable overcurrent protection, residual-current protection where required, protective earthing, and compatible electrical accessories. Circuit design must account for start-up current, steady-state current, cable length, voltage drop, and applicable electrical regulations.

Bending Radius and Mechanical Handling

Observe the specified minimum bending radius of 25 mm. Avoid twisting, crushing, stretching, or damaging the cable during transport and installation. The outer jacket, insulation, and protective braid must remain intact.

Installation Temperature

The specified minimum installation temperature is -60°C. Installation planning and cable handling must comply with the manufacturer's instructions and the permitted environmental conditions.

Chemical Compatibility

Verify the cable's compatibility with all process chemicals, cleaning agents, oils, and other substances present at the installation site. Consider chemical concentration, operating temperature, exposure duration, and the possibility of accidental contact.

Temperature Control and Monitoring

Select a suitable control strategy according to the process requirements. Temperature sensors, controllers, contactors, alarms, and monitoring equipment may be required depending on the application and applicable safety requirements.

Inspection Before Commissioning

Before energizing the system, inspect the cable, protective braid, electrical connections, end terminations, junction boxes, and protective devices. Complete the required electrical tests and commissioning procedures in accordance with the manufacturer's instructions.

8. Compatible Accessories and System Components

A complete ELSR-H+ installation may require connection kits, end termination components, junction boxes, mounting materials, electrical protection devices, temperature sensors, and control equipment. The required components depend on the cable version, installation environment, and system design.

Connection and Termination Accessories

Use connection kits and end termination components approved for the selected heating cable. These components must provide suitable electrical insulation, mechanical protection, and environmental sealing for the intended application.

Junction Boxes

Select junction boxes with suitable electrical ratings, ingress protection, cable entries, and environmental resistance. Compatibility with the heating cable, connection accessories, and installation conditions must be confirmed before use.

Mounting and Fixing Materials

Suitable mounting materials may be required to secure the cable to pipes, tanks, vessels, or other approved surfaces. Fixing methods must not damage the cable or compromise its protective layers.

Electrical Protection Equipment

Circuit breakers, residual-current protection devices, protective conductors, contactors, and other electrical components must be selected according to the manufacturer's instructions, circuit design, and applicable regulations.

Temperature Sensors and Controllers

Depending on the application, temperature sensors and control equipment may be used to monitor the protected equipment and manage system operation. Sensor placement and controller settings must reflect the process requirements and thermal characteristics of the installation.

The compatibility of individual accessory models must be verified against the manufacturer's documentation for the selected ELSR-H+ cable. No specific accessory should be assumed compatible without confirmation.

9. Industrial Frost Protection and Process Temperature Maintenance

Industrial freeze protection is essential where low ambient temperatures may cause liquids to freeze, interrupt operations, or damage equipment. Pipes, tanks, vessels, and other exposed components may require heat tracing to compensate for heat losses during cold weather.

The ELSR-H+ can be incorporated into an appropriately engineered heating system to maintain the required temperature of compatible equipment. Its heating output compensates for thermal losses through the equipment surface and insulation, helping maintain the specified operating conditions.

System performance depends on cable selection, heating output, cable layout, insulation quality, ambient conditions, process temperature, and electrical supply. Nominal power ratings should not be interpreted as guaranteed output under all operating conditions.

The required control strategy depends on the application. Some systems may operate continuously during cold conditions, while others may use temperature-based control or additional monitoring to maintain the desired process temperature.

Applications involving sensitive process media, hazardous areas, or demanding chemical exposure require assessment of the complete heating system against the applicable process, electrical, and safety requirements.

10. Hazardous-Area Applications and Safety Requirements

Where the heating system is intended for a potentially explosive atmosphere, the suitability of the complete installation must be verified against the applicable hazardous-area classification, product approvals, and installation requirements.

The heating cable must be used with compatible approved connection kits, termination components, junction boxes, electrical protection devices, and control equipment. The installation must comply with the relevant certification conditions, manufacturer's instructions, and applicable electrical regulations.

Self-regulating operation does not eliminate the need for suitable electrical protection, temperature limitations, correct heat-loss calculations, or any required temperature-control measures. The complete system must be designed and installed by qualified personnel.

11. Safety and Maintenance

Installation and electrical connection of the ELTHERM ELSR-H+ must be performed by qualified personnel in accordance with the manufacturer's instructions and applicable electrical regulations.

Before commissioning, verify cable condition, electrical connections, protective-braid continuity, grounding arrangements, end terminations, circuit protection, and compatibility of the installation accessories. Carry out the required electrical tests and document the commissioning results where necessary.

Periodic inspection should be carried out according to the operating environment and maintenance requirements of the heating system. Particular attention should be given to visible cable damage, deterioration of the outer jacket, damaged junction boxes, moisture ingress at connections, and changes in process conditions that could affect heating performance.

Any identified damage must be assessed by qualified personnel before the system is returned to service. Repairs and replacements must follow approved manufacturer procedures and use compatible components.

The maximum continuous maintenance temperature of +165°C and maximum exposure temperature of +210°C when de-energized are separate ratings and must be observed accordingly. The specified minimum installation temperature and minimum bending radius must also be respected throughout installation.

12. Main Product Advantages

• Self-regulating heating technology that responds to local temperature variations.
• Maximum continuous maintenance temperature of +165°C.
• Maximum exposure temperature of +210°C when de-energized.
• Five nominal power ratings: 15, 30, 45, 60, and 75 W/m.
• Nominal operating voltage of 230 VAC.
• Fluoropolymer electrical insulation and outer jacket.
• Nickel-plated copper bus wires and protective braid.
• Specified minimum installation temperature of -60°C.
• Specified minimum bending radius of 25 mm.
• Designed for suitable industrial freeze protection and process temperature maintenance.
• Resistance to moisture, selected chemicals, oil, and petrol, subject to product ratings and exposure conditions.
• Flexible cable routing when installed according to manufacturer requirements.
• Suitable for integration into engineered industrial heat-tracing systems.

These characteristics make the ELSR-H+ a candidate for industrial heat-tracing projects requiring elevated temperature capability, reliable temperature maintenance, and robust construction, provided that the selected cable version and complete installation meet the application requirements.

13. Conclusion

The ELTHERM ELSR-H+ is a self-regulating, high-temperature electric heating cable designed for industrial freeze protection and process temperature maintenance. It offers a maximum continuous maintenance temperature of +165°C, a maximum exposure temperature of +210°C when de-energized, and nominal power ratings ranging from 15 to 75 W/m at a nominal voltage of 230 VAC.

Its nickel-plated copper bus wires, self-regulating heating element, fluoropolymer insulation, nickel-plated copper protective braid, and fluoropolymer outer jacket provide a multilayer construction intended for demanding industrial environments. With a specified minimum installation temperature of -60°C and minimum bending radius of 25 mm, it supports installation planning for a variety of compatible industrial heating applications.

The ELSR-H+ can be considered for suitable industrial piping, tanks, vessels, silos, valves, pumps, and other process equipment in chemical and petrochemical facilities, oil and gas installations, power plants, and industrial utility systems.

Successful application requires correct cable selection, heat-loss calculations, appropriate thermal insulation, compatible accessories, suitable electrical protection, and a control strategy matched to the process. All technical ratings and installation requirements must be verified against the manufacturer's documentation for the exact product designation.