Raychem QTVR Self-Regulating Heating Cables
Electrical Process Temperature Maintenance for Nonhazardous and Hazardous Locations
Product Overview
The Raychem QTVR family of self-regulating heating cables is designed for pipe heat tracing in industrial applications. QTVR heating cables can provide process-temperature maintenance up to 225°F (110°C) and can also be used for freeze protection in systems having high heat loss. The heating cables are configured for use in nonhazardous and hazardous locations, including areas where corrosives may be present.
Heating Cable Construction: The cable features a fluoropolymer outer jacket (-CT), a tinned-copper braid, a fluoropolymer inner jacket, a self-regulating conductive core, and nickel-plated copper bus wires.
QTVR cables meet the requirements of the U.S. National Electrical Code and the Canadian Electrical Code. For additional information, contact your Chemelex representative or call (800) 545-6258.
Application
| Area classification | Nonhazardous and hazardous locations |
|---|---|
| Traced surface type | Metal and some plastics |
| Chemical resistance | Organic and aqueous inorganic chemicals and corrosives. For use on plastic pipes, refer to TraceCalc Pro design software. |
Supply Voltage
QTVR1: 100-130 Vac
QTVR2: 200-277 Vac
Specifications
| Specification | Value |
|---|---|
| Maximum maintain or continuous exposure temperature (power on/off) | 225°F (110°C) |
| Maximum intermittent exposure temperature (power on/off) | 225°F (110°C) |
| Temperature classification | T4: 275°F (135°C). Temperature ID numbers are consistent with North America national electrical codes. |
| Minimum installation temperature | -76°F (-60°C) |
| Minimum bend radius |
-76°F (-60°C) ≤ T < -4°F (-20°C): 2" (51 mm) -4°F (-20°C) ≤ T < 14°F (-10°C): 1.4" (35 mm) 14°F (-10°C) ≤ T < 32°F (0°C): 1" (25 mm) 32°F (0°C) ≤ T < 50°F (+10°C): 0.8" (20 mm) T ≥ 50°F (+10°C): 0.5" (12.7 mm) |
| Bus wire size | 16AWG (10QTVR1-CT, 10QTVR2-CT, 15QTVR2-CT); 14AWG (15QTVR1-CT, 20QTVR1-CT, 20QTVR2-CT) |
| Outer jacket color | Brown |
Approvals
| Approval Body | Hazardous Locations | Zone Approvals |
|---|---|---|
| IECEx | IECEx BAS 20.0013X Ex 60079-30-1 eb IIC T4 Gb or Ex 60079-30-1 eb mb IIC T4 Gb Ex 60079-30-1 tb IIIC T130°C or Ex 60079-30-1 mb tb IIIC T130°C Tmin -60°C |
CLI, ZN1, AEx e II T4 Tmin -40°C |
| FM APPROVED | Class I, Div. 2, Groups A, B, C, D Class II, Div. 2, Groups F, G Class III Tmin -40°C |
CLI, ZN1, AEx e II T4 Tmin -40°C |
| Class I, Div. 1, Groups A, B, C, D, Class II, Div. 1 Groups E, F, G Class III -WS for Canada |
Ex 60079-30-1 IIC T4 Gb Ex 60079-30-1 IIIC T135°C Db Class I Zone 1 AEx eb IIC T4 Gb Zone 21 AEx tb IIIC T135°C Db -WS for Canada |
|
| IEx 09.0006X Ex eb IIC T4 Gb Ex eb mb IIC T4 Gb |
Design and Installation
For proper design and installation, use TraceCalc Pro design software or the Self-Regulating Heating Cables Design Guide H56882. Also, refer to the Chemelex Installation and Maintenance Manual (H57274). Literature is available on chemelex.com.
Performance Data
Adjustment Factors
| Cable Type | 208 V | 277 V | ||
|---|---|---|---|---|
| Power Output | Circuit Length | Power Output | Circuit Length | |
| 10QTVR2-CT | 0.92 | 0.94 | 1.16 | 1.06 |
| 15QTVR2-CT | 0.96 | 0.91 | 1.1 | 1.1 |
| 20QTVR2-CT | 0.95 | 0.92 | 1.08 | 1.11 |
Nominal Power Output Rating on Metal Pipes at 120 V/240 V
This graph illustrates the nominal power output (W/ft) on metal pipes versus pipe temperature (°F/°C) for 10QTVR, 15QTVR, and 20QTVR cables at 120V and 240V. The curves show how power output changes with pipe temperature for each cable type.
Maximum Circuit Lengths Based on Circuit Breaker Sizes
| Ambient temperature at start-up | 120 V | 240 V | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 15 A | 20 A | 30 A | 40 A | 50 A | 15 A | 20 A | 30 A | 40 A | 50 A | |
| 50°F (10°C) | 100 | 130 | 195 | 195 | - | 200 | 265 | 390 | 390 | - |
| 0°F (-18°C) | 80 | 105 | 160 | 195 | - | 160 | 210 | 320 | 390 | - |
| 10QTVR-CT | - | - | - | - | - | - | - | - | - | - |
| -20°F (-29°C) | 70 | 95 | 145 | 195 | - | 145 | 195 | 295 | 390 | - |
| -40°F (-40°C) | 65 | 90 | 135 | 180 | - | 135 | 180 | 275 | 365 | - |
| 50°F (10°C) | 75 | 100 | 150 | 200 | 220 | 160 | 210 | 320 | 340 | - |
| 0°F (-18°C) | 60 | 80 | 120 | 160 | 200 | 125 | 170 | 255 | 340 | - |
| 15QTVR-CT | - | - | - | - | - | - | - | - | - | - |
| -20°F (-29°C) | 55 | 70 | 110 | 145 | 185 | 115 | 155 | 235 | 315 | - |
| -40°F (-40°C) | 50 | 65 | 100 | 135 | 170 | 110 | 145 | 220 | 290 | - |
| 50°F (10°C) | 60 | 80 | 120 | 160 | 195 | 120 | 160 | 240 | 320 | 390 |
| 0°F (-18°C) | 45 | 60 | 95 | 125 | 160 | 95 | 125 | 190 | 255 | 320 |
| 20QTVR-CT | - | - | - | - | - | - | - | - | - | - |
| -20°F (-29°C) | 40 | 55 | 85 | 115 | 145 | 85 | 115 | 175 | 235 | 295 |
| -40°F (-40°C) | 40 | 55 | 80 | 110 | 135 | 80 | 110 | 165 | 220 | 275 |
Note: '-' indicates not permitted.
Product Details
Product Dimensions and Weight
| Description | Weight | Width x Thickness (nominal) |
|---|---|---|
| 10QTVR1-CT, 10QTVR2-CT, 15QTVR2-CT | 85 lbs/1000 ft (126 g/m) | 0.465 x 0.177 in (11.8 x 4.5 mm) |
| 15QTVR1-CT, 20QTVR1-CT, 20QTVR2-CT | 121 lbs/1000 ft (180 g/m) | 0.551 x 0.201 in (14.0 x 5.1 mm) |
Ordering Details
| Description | Part number |
|---|---|
| 10QTVR1-CT | 259951-000 |
| 15QTVR1-CT | 148345-000 |
| 20QTVR1-CT | 498703-000 |
| 10QTVR2-CT | 391991-000 |
| 15QTVR2-CT | 040615-000 |
| 20QTVR2-CT | 988967-000 |
Accessories and Safety
Connection Kits
Chemelex offers a full range of connection kits for power connections, splices, and end seals. These connection kits must be used to ensure proper functioning of the product and compliance with warranty, code, and approvals requirements.
Ground-Fault Protection
To minimize the danger of fire from sustained electrical arcing if the heating cable is damaged or improperly installed, and to comply with the requirements of Chemelex, agency certifications, and national electrical codes, ground-fault equipment protection must be used on each heating cable branch circuit. Arcing may not be stopped by conventional circuit protection. Many Raychem control and monitoring systems meet the ground-fault protection requirement.
Contact Information
North America
Tel +1 800 545 6258
info@chemelex.com
Latin America
Tel +1 713 868 4800
info@chemelex.com
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