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HMT LIMIT POWER CABLE
High-temperature heating cables of constant power HMT are designed specifically to protect against freezing or maintain the process temperature for working bodies in metal pipelines and tanks, where too high a temperature of maintenance and/or exposure precludes the use of heating cables with thermoplastic insulation. The parallel resistance configuration allows you to cut the cable to the desired length and terminate it directly at the installation site using easy-to-use kits supplied by "Thermon".
HMT heating cables are guaranteed to provide a constant specific power output regardless of the length of the circuit. The corrugated stainless steel outer shell is an extremely robust construction designed for use in harsh operating conditions.
HMT heating cables are certified for use in ordinary (unclassified) areas, as well as in explosive areas of Category 2 and 3 (Zone 1 and 2) according to the ATEX standard.
Technical specifications
- Available specific capacities are 5, 10, 15, 20 W/ft at 50°F (16, 33, 49, 66 W/m at 10°C)
- Supply voltage 110-120, 208-277 V (~)
Maximum maintenance temperature
- HMT-5 572°F (300°C)
- HMT-10 563°F (295°C)
- HMT-15 502°F (261°C)
- HMT-20 423°F (217°C)
- The maximum temperature of continuous exposure in the off state is 662°F (350°C)
- Minimum installation temperature -76°F (-60°C)
- Minimum bending radius at -76°F (-60°C) 1.00” (25 mm)
Construction
- Nickel-plated copper cores(2.1 mm)
- Heating spiral made of composite metal alloy
- Connecting the heater bus
- High-temperature fiberglass braid
- High temperature mica insulation
- Fiberglass shell
- Corrugated stainless steel shell
Certificates / Permissions
Canadian Standards Association
Normal zones
Hazardous (classified) areas
Class I, Section 2, Groups A, B, C and D
Class II, Section 2, Groups E, F and G
Class III
Ex e II
