Heating cables

Self-regulated heating cable Thermon VSX

Process Temperature Maintenance or Freeze Protection High performance VSX self-regulating heating cables are designed specifically for process temperature maintenance or freeze protection where high maintain temperatures or high temperature exposure is required.

The heat output of VSX cable varies in response to the surrounding temperature by reducing its thermal output with increasing temperature. With its high self-regulating characteristic, VSX can be installed in hazardous areas requiring a T3 temperature class rating.

Construction VSX

1. Nickel-plated copper bus wires (14 AWG).

2. Semiconductive heating matrix and fluoropolymer dielectric insulation.

3. Nickel-plated copper brai.

4. Fluoropolymer overjacket provides additional protection for cable and braid where exposure to chemicals or corrosives is expected.

Features Thermon VSX:

• Freeze protection
• Medium to high process temperature maintenance
• Steam clean/purge
• Certified for use in ordinary (nonclassified) areas and in potentially explosive atmospheres

Ratings Thermon VSX

• Available watt densities: 16, 33, 49, 66 w/m @ 10°C
  (5, 10, 15, 20 w/ft @ 50°F)
• Supply voltages: 110-120 or 208-277 Vac
• Max. maintenance temperature: 149°C (300°F)
• Max. exposure temperature:
  Intermittent power-on: 232°C (450°F)
  Intermittent power-off: 250°C (482°F)
  Continuous power-off: 204°C (400°F)
• Minimum installation temperature: - 51°C (- 60°F)
• Minimum bend radius:
  °F (-15°C): 10 mm (0.38”)76°F (- 60°C): 32 mm (1.25”)
• T-rating: T3 200°C (392°F)

Power output curves Thermon VSX

The power outputs shown apply to cable installed on insulated metallic pipe (using the procedures outlined in IEEE 515) at the service voltages stated below. For use on other service voltages, contact Thermon.

Circuit breaker sizing

Maximum circuit lengths for various circuit breaker amperages are shown below. Breaker sizing should be based on the National Electrical Code, Canadian Electrical Code or any other applicable code. The National Electrical Code and Canadian Electrical Code require ground-fault protection of equipment for each branch circuit supplying electric heating equipment. Check local codes for ground-fault protection requirements.