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Mineralisoliertes Heizkabel
Einführung
Mineral-insulated heating cables demonstrate a major progression in industrial heating technology, providing reliable thermal cabling solutions to the most challenging applications. Mineral insulated heating cables are literally built for durability, accuracy and safety and can survive mechanical stress, extreme temperatures and corrosive atmospheres. At Tempsens, we have developed mineral-insulated heating cable solutions to support modern industrial processes, whether it is freeze protection in the petrochemical industry or process temperature maintenance in power generation. With an extensive thermal engineering experience base of 35 years, we manufacture MI heating cables that deliver performance, durability and heat transfer performance. Our heating cables have an internal seamless metal sheath that can be filled with highly compacted magnesium oxide insulation, which provides electrical isolation and enhanced thermal conductivity. Regardless of whether required, pipeline, tanks or hazardous location equipment heating solutions, our mineral insulated heating cable technology offers the accuracy and reliability your operations demand. Being ISO certified and extensively tested, Tempsens MI heating cables are used in industries around the world where operational failure is not an option.
About Mineral Insulated Heating Cable
Our Mineral Insulated Heating Cable Catalogue
Understanding Mineral Insulated Heating Cable
A mineral-insulated heating cable is made with single or dual heating element over which highly compacted magnesium oxide (MgO) powder providing the electrical insulation, and there is a solid metal sheath. This unique construction offers very uniform heat transfer at sheath temperatures up to 800°C, depending on sheath material selection which also contributes to energy efficiency benefits of MI heating cables. Mineral-insulated heating cables are designed to provide exceptional dielectric strength, moisture protection, and mechanical strength. The metal sheath ensures exceptional strength and is generally composed of stainless steel 316/321, Inconel, or specially designed alloys. The mechanical compressed MgO insulation will maintain maximum dielectric integrity over the service life of the cable. As such, a mineral-insulated heating cable is extremely well-suited to more demanding industrial heating environments.
Applications Of Mineral Insulated Heating Cable
- Freeze Protection Systems: Heat application for pipelines and vessels in the oil and gas industries to avoid solidification of process fluids.
- Process Temperature Maintenance: Preserve viscosity and flow characteristics in applications involving chemical processing.
- Tank and Vessel Heating: Uniform heat distribution on storage tanks in the food & pharmaceutical industries.
- Hazardous Area Heating: Certified solutions in Zone 1 and Zone 2 explosive atmospheres.
- High-Temperature Applications: Furnace components as well as reactors and equipment with heat applications up to 800 degrees Celsius.
- Petrochemical Industry: Heating heavy crude oil pipelines & refinery components.
- Power Generation: Boiler components, as well as turbine applications and/or auxiliary heating.
- Semiconductor Manufacturing: Precision temperature control in clean room environments.
Features/ Specifications of Mineral Insulated Heating Cable
| Heizkörper | Scheidenmaterial | Betriebstemperatur bis zu |
|---|---|---|
| NiCr-Legierung | Inconel 600 (2.4816) und SS316L (1.4404) | 800°C |
| CuNi-Legierung | SS321/AISI 321 (1.4541) | 500°C |
Technical Data for Mineral Insulated Heating Cable
| Outer Diameter (mm) | Resistance at 20°C (Ω/m) | Conductor Diameter (mm) | Wall Thickness (mm) | Maximale Nennspannung |
|---|---|---|---|---|
| 3.2 | 10 | 0.38 | ≥ 0,32 | 800 V |
| 3.2 | 6.3 | 0.48 | ≥ 0,32 | |
| 3.2 | 4 | 0.61 | ≥ 0,32 | |
| 3.6 | 2.5 | 0.77 | ≥ 0,36 | |
| 3.8 | 6.1 | 0.96 | ≥ 0,38 | |
| 4.1 | 1 | 1.21 | ≥ 0,41 | |
| 4.5 | 0.63 | 1.52 | ≥ 0,45 | |
| 5 | 0.4 | 1.91 | ≥ 0,50 | |
| 5.6 | 0.25 | 2.42 | ≥ 0,56 | |
| 6.5 | 0.16 | 3.03 | ≥ 0,65 | |
| Leiter CuNi, einsetzbar bis 500°C | ||||
| 6.5 | 0.16 | 3.03 | ≥ 0,65 | up to 300V / 500V |
Toleranz für den Widerstand pro Meter: ± 10%
Toleranz für den Außendurchmesser: nach DIN EN61515
Beispiel: 45-NiCr316 Heiz-MI-Kabel: 4,5 mm Außendurchmesser, 1 Kern, Leiter aus NiCr-Legierung, SS316L-Ummantelung
Warum Tempsens wählen?
- 35 years of thermal engineering experience: Tangible evidence of engineering and manufacturing experience in heating technologies for the industrial application market.
- ISO/IEC 17025: 2017 Accredited Labs: Full team of professionals and physical equipment to test your products with proven reliability and accuracy based on ASTM, UL, CSA and other in-depth standards.
- Custom product engineering capabilities: Customised cables designed to your exact design voltage, wattage and environment.
- Superior sheath material: Stainless steel grades 316 and 321, Inconel 600 and 800 and other proprietary alloys suited for corrosive environments.
- High power density capabilities: Engineered for applications requiring a surface loading of up to 100 W/in².
- Designed for hazardous locations: ATEX and IECEx certifications for explosive atmospheres.
- Very quick thermal response times: Small package size design with excellent thermal conductivity.
Häufig gestellte Fragen
Häufig gestellte fragen
Find answers to frequently asked questions related to Mineral Insulated Heating Cable.
The selection of an MI heating cable depends on many parameters, which include the operating temperature, required heat output, available voltage, compatibility with the sheath material, and hazardous area classification. Tempsens’ engineers will analyse these parameters and help you choose the best specifications.
Use of an infrared thermometer to inspect the cable condition and occasional insulation resistance testing is usually adequate for MI heating cable because of the robust design and sealed construction.
Your MI cable will be installed directly on the surface using recommended mounting methods, covered with thermal insulation, and terminated using the special termination kits connecting the MI cable to the power supplies requiring temperature controls.
MC Cable is polymer-insulated and allows for electrical distribution; MI cable is a mineral-insulated heating cable, allowing installation in extreme temperature environments.
MI cables can withstand extreme temperatures, up to 1000°C; the cable is completely moisture proof, has better mechanical strength, has a small outer diameter, which allows for better heat distribution, and can be utilised in hazardous locations.
