- A high temperature constant wattage polymer heat tracing cable.
- Ideal for freeze protection or process temperature maintenance
- This cable is used in rugged environments, typically in refineries
- Withstands the temperature exposures associated with steam purging.
- Operating Voltage: 750 VAC
- Maximum operating temperature: 260°C
- T-rating: Stabilized design or thermostat
- Certifications/ Approval:
Notes:
* with 30 mA earthfault protection NOTE: Longer circuit lengths are possible based on earth-fault protection with higher earthfault ratings; contact us.Construction
- Heating conductor
- Fluoropolymer dielectric insulation
- Glassceramic tape
- Nickel-plated copper braid (BN)
- Fluoropolymer overjacket
Applications for Thermon TESH Constant Watt Heating Cables
TESH series resistance constant Watt heating cables are used where circuit lengths exceed the limitations of parallel resistance heating cables. TESH withstands the temperature exposures associated with steam purging.
The series circuitry of TESH provides consistent Wattper- metre power output along the entire length of the cable with no voltage drop. A glassceramic tape layer adds additional protection to the heating cable and a fluoropolymer overjacket provides chemical resistance while maintaining maximum flexibility. The construction of the cable meets the 7 Joule impact test per EN50019.
TESH cables are approved for use in ordinary (nonclassified) areas and Catagories 2 and 3 ATEX classified areas.
 | II 2 G EEx e IIC T2 to T6 L CIE 05 ATEX 6135 |
Ratings
- Maximum Watt density: 25 W/m
- Maximum supply voltage: 750 Vac
- Maximum continuous exposure temperature:
Power-off: 260°C - Minimum installation temperature: -60°C
- Minimum bend radius
5 x cable O.D. - T-rating¹
Based on stabilized design²: T3 to T6
Notes:
| ¹ | T-rating per internationally recognised testing agency guidelines. |
| ² | Thermon heating cables are approved for the listed T-ratings using the stabilised design method. This enables the cable to operate in hazardous areas without limiting thermostats. The T-rating may be determined using CompuTrace® Electric Heat Tracing Design Software or contact us for design assistance. |
Stabilised Design
The Watt density limitation for TESH cables is directly related to the desired maintain temperature. Thermon is able to ensure the T-rating based on a stabilised design that enables series constant Watt heating cables to operate in hazardous areas without limiting thermostats.
TESH cable output and T-rating are dependent upon supply voltage, cable resistance, temperature conditions as well as additional variables.
Circuit Breaker Sizing and Type
Maximum circuit lengths for various circuit breaker amperages are shown below. Circuit breaker sizing and earth-fault protection should be based on applicable local codes. For information on design and performance on other voltages, contact Thermon.
Earth-fault protection of equipment should be provided for each branch circuit supplying electric heating equipment.
Available Cables
| Product Type | Resistance Ohm/m at 20°C | Conductor Size mm² | Max. Cable Length¹ m (with 30 mA earthfault protection) | Cable Diameter mm |
| TESH 2.9 | 0.0029 | 6.00 | 1435 | 7.0 |
| TESH 4.4 | 0.0044 | 4.00 | 1525 | 6.3 |
| TESH 7 | 0.0072 | 2.50 | 1855 | 5.5 |
| TESH 10 | 0.010 | 1.79 | 1775 | 5.1 |
| TESH 11.7 | 0.011.7 | 1.5 | 2025 | 4.9 |
| TESH 15 | 0.015 | 1.2 | 2090 | 4.7 |
| TESH 17.8 | 0.0178 | 1.00 | 2275 | 4.6 |
| TESH 25 | 0.025 | 1.11 | 2525 | 4.6 |
| TESH 31.5 | 0.0315 | 1.60 | 2400 | 4.9 |
| TESH 50 | 0,050 | 1.02 | 2335 | 4.7 |
| TESH 65 | 0,065 | 0.75 | 1890 | 4.4 |
| TESH 80 | 0,080 | 1.21 | 2190 | 4.3 |
| TESH 100 | 0.100 | 1.50 | 2025 | 4.9 |
| TESH 150 | 0.150 | 1.02 | 2335 | 4.6 |
| TESH 200 | 0.200 | 1.75 | 2605 | 4.4 |
| TESH 320 | 0.320 | 0.92 | 2420 | 4.5 |
| TESH 380 | 0.380 | 0.79 | 2555 | 4.4 |
| TESH 480 | 0.480 | 0.64 | 2765 | 4.3 |
| TESH 600 | 0.600 | 0.49 | 3010 | 4.2 |
| TESH 700 | 0.700 | 0.43 | 3155 | 4.1 |
| TESH 810 | 0.810 | 0.62 | 2780 | 4.3 |
| TESH 1000 | 1.000 | 0.49 | 3010 | 4.2 |
| TESH 1440 | 1.440 | 0.34 | 3395 | 4.1 |
| TESH 1750 | 1.750 | 0.29 | 3615 | 4.1 |
| TESH 2000 | 2.000 | 0.55 | 2900 | 4.2 |
| TESH 3000 | 3.000 | 0.34 | 3395 | 4.1 |
| TESH 8000 | 8.000 | 0.14 | 4455 | 3.8 |
¹Longer circuit lengths are possible based on earth-fault protection with higher earth-fault ratings; contact us.
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