- A constant Watt heat tracing cable designed for high exposure temperatures and/or high watt density applications
- Typical applications are found in the Chemical- and Petrochemical industries for maintenance of low viscosity fluids as well as in applications where steam purging occurs.
- Alloy 825 for exceptional resistance to stress corrosion in chloride, acid, salt and alkaline environments.
- Ex-rated for hazardous areas
- High heating power, suitable up to 500°C (Power on)
- Can be installed at temperatures to -60°C
- T-rating: Stabilized design or thermostat
- Certifications/ Approval:
Applications for Thermon MIQ Mineral Insulated Heating Cables
MIQ high performance mineral insulated heating cables are used extensively for high temperature maintenance, high temperature exposure and/or high watt density applications which exceed the limitations of thermoplastic insulated cables.
Thermon's MIQ mineral insulated cables are manufactured using Alloy 825, a high nickel/chromium alloy which is ideally suited for high temperature service that offers exceptional resistance to stress corrosion in chloride, acid, salt and alkaline environments.
MIQ cables are certified for use in ordinary (nonclassified) areas and in potentially explosive atmospheres in accordance with the ATEX directive and the IEC Ex scheme.
 | II 2 G Ex d IIC T1 to T6 2 II 2 G Ex de IIC T1 to T6 II 2 D Ex tD A21 IP66 T450°C to T85°C |
 | International Electrotechnical Commission IEC Certification Scheme for Explosive Atmospheres FMG 09.0006 |
 | Factory Mutual Research Ordinary and Hazardous (Classified) L ocations |
Construction
- Solid alloy or copper conductor
- CCompacted magnesium oxide insulation
- Seamless alloy 825 (DIN 2.4858) sheath
Thermon MIQ Heater Sets
Thermon MIQ cable sets are available in four factory fabricated configurations:
Type A, B, D or E.
The standard assemblies consist of a predetermined length of heating cable joined to a standard 1.2 m or 2.1 m nonheating cold lead with 305 mm long thermoplastic insulated pigtails.
The nonheating section of the unit is sealed and fitted with a high pressure, liquid-tight M20, M25 or M32 brass gland 3 for connection into the supply junction box.
Ratings
- Rated voltage¹: 300 and 600 Vac
- Maximum maintenance temperature²: 500°C
- Maximum continuous exposure temperature:
Power-off: 600°C - Maximum Watt density²: 260 W/m
- Minimum installation temperature: -60°C
- Minimum bend radius
6 x cable O.D.
Notes:
| ¹ | Specific voltage depends on circuit length and design conditions. |
| ² | Watt density limitations are correlated to maintain temperatures. |
Available Cables
600 Vac Cable—Two Conductor—Heater Set Type D or E
| Product Type | Resistance¹ Ohm/km | Nominal Diameter mm |
| MIQ-11E0H-2S | 36100 | 5.2 |
| MIQ-90E1H-2S | 29500 | 5.7 |
| MIQ-60E1H-2S | 19700 | 5.8 |
| MIQ-40E1H-2S | 13100 | 6.1 |
| MIQ-20E1H-2S | 6600 | 6.5 |
| MIQ-10E1H-2S | 3300 | 6.5 |
| MIQ-70E2H-2S | 2300 | 6.7 |
| MIQ-50E2H-2S | 1640 | 7.1 |
| MIQ-30E2H-2S | 980 | 7.6 |
| MIQ-20E2H-2S | 660 | 6.5 |
| MIQ-15E2H-2S | 490 | 6.7 |
| MIQ-10E2H-2S | 330 | 7.1 |
| MIQ-70E3H-2S | 230 | 7.5 |
| MIQ-50E3H-2S | 164 | 7.9 |
| MIQ-40E3H-2S | 131 | 8.3 |
| MIQ-30E3H-2S | 98 | 8.8 |
| MIQ-20E3H-2S | 66 | 6.9 |
| MIQ-16E3H-2S | 52 | 7.1 |
| MIQ-13E3H-2S | 43 | 7.4 |
| MIQ-10E3H-2S | 34 | 7.6 |
| MIQ-81E4H-2S | 27 | 7.6 |
600 Vac Cable—One Conductor—Heater Set Type A or B
| Product Type | Resistance¹ Ohm/km | Nominal Diameter mm |
| MIQ-20E1H-1S | 6560 | 4.3 |
| MIQ-16E1H-1S | 5250 | 4.3 |
| MIQ-13E1H-1S | 4270 | 4.3 |
| MIQ-10E1H-1S | 3280 | 4.3 |
| MIQ-85E2H-1S | 2790 | 4.3 |
| MIQ-70E2H-1S | 2300 | 4.3 |
| MIQ-50E2H-1S | 1650 | 4.3 |
| MIQ-38E2H-1S | 1250 | 4.3 |
| MIQ-30E2H-1S | 980 | 4.3 |
| MIQ-25E2H-1S | 820 | 4.3 |
| MIQ-20E2H-1S | 660 | 4.4 |
| MIQ-17E2H-1S | 560 | 4.6 |
| MIQ-15E2H-1S | 490 | 4.3 |
| MIQ-10E2H-1S | 330 | 4.3 |
| MIQ-80E3H-1S | 260 | 4.3 |
| MIQ-70E3H-1S | 230 | 4.3 |
| MIQ-60E3H-1S | 200 | 4.3 |
| MIQ-40E3H-1S | 130 | 4.4 |
| MIQ-30E3H-1S | 98 | 7.4 |
| MIQ-10E3H-2S | 34 | 4.7 |
| MIQ-20E3H-1S | 66 | 5.1 |
| MIQ-10E3H-1S | 33 | 4.3 |
| MIQ-65E4H-1S | 21 | 4.6 |
| MIQ-40E4H-1S | 13 | 4.8 |
| MIQ-25E4H-1S | 8 | 5.3 |
| MIQ-16E4H-1S | 5 | 5.7 |
300 Vac Cable—Two Conductor—Heater Set Type D or E
| Product Type | Resistance¹ Ohm/km | Nominal Diameter mm |
| MIQ-11E0L-2S | 36100 | 4.1 |
| MIQ-90E1L-2S | 29500 | 4.1 |
| MIQ-75E1L-2S | 24600 | 4.1 |
| MIQ-60E1L-2S | 19700 | 4.1 |
| MIQ-50E1L-2S | 16400 | 4.1 |
| MIQ-40E1L-2S | 13100 | 4.1 |
| MIQ-32E1L-2S | 10500 | 4.1 |
| MIQ-27E1L-2S | 9020 | 4.1 |
| MIQ-25E1L-2S | 8200 | 4.1 |
| MIQ-20E1L-2S | 6560 | 4.1 |
| MIQ-17E1L-2S | 5580 | 4.1 |
| MIQ-14E1L-2S | 4590 | 4.1 |
| MIQ-10E1L-2S | 3280 | 4.2 |
| MIQ-70E2L-2S | 2300 | 4.6 |
| MIQ-50E2L-2S | 1640 | 4.8 |
| MIQ-30E2L-2S | 980 | 4.3 |
| MIQ-25E2L-2S | 820 | 4.3 |
| MIQ-20E2L-2S | 660 | 4.3 |
| MIQ-15E2L-2S | 490 | 4.4 |
| MIQ-10E2L-2S | 330 | 4.8 |
| MIQ-70E3L-2S | 230 | 5.2 |
| MIQ-50E3L-2S | 164 | 5.7 |
Available MIQ Cold Leads
| Cold Lead Size AWG (mm²) | Heater Sets A/D/E Current Rating (A) | Gland Size | Heater Set B Current Rating (A) | Gland Size |
| 12 (3,3) | 20 | M20 | 25 | M20 |
| 10 (5,3) | 30 | M25 | 40 | M20 |
| 8 (8,4) | 45 | M32 | 50 | M25 |
| ¹ | All resistances shown are per length of cable at 20°C and are subject to a ±10% manufacturing tolerance. |
| ² | Flameproof system must be specified, contact Thermon. |
Circuit Breaker Sizing and Type
Maximum circuit lengths for MIQ heating cables will be a function of cable resistance, cable set power and operating voltage. Circuit length, breaker sizing and earth-fault protection should be based on applicable local codes.
Earth-fault protection of equipment should be provided for each branch circuit supplying electric heating equipment.
Thermon | Thermon PETK: |
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Thermon SCTK: | Thermon Terminator DE-B: |
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Thermon Terminator DP: | Thermon Terminator DS/ DE: |
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Zone Classification: | Zone Classification: Thermon SCTK Splice Connection Termination Kits Installation video |
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