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Heater Power Panels

Pre-Engineered Heater Power Panels from Principal Technology incorporate years of experience in the industry to provide the features customers need in less time. Our Heater Power Panels provide safety interlocks and control of electric heaters for process streams including liquid, gas and aqueous electric vaporizer applications and have Standard Heater ranges from 15 to 540 KW (1 to 14 circuits) at 480V/3 ph/60 Hz.

Principal Technology’s Heater Power Panels are configured with multiple heater circuits, typically limited to 48 Amps as required for specific applications of the NEC, while offering redundancy if one or more heater circuits fails. Modulating control for electric heaters is accomplished using Silicon Rectified Controllers (SCRs), proportional to customer demand signal (4-20 mA), and SCR heat sinks are mounted externally on the enclosure for faster SCR heat rejection. Each unit includes a main three phase disconnect, control power transformer with Nema 4 electrical enclosure with LED pilot indication for Power On, Heater On, and Over-Temperature, with reset.

Principal Technology’s Pre-Engineered Heater Power Panels come with a number of standard critical safety features, such as:

  • Single Power Disconnect
  • Branch circuit protection with semiconductor fuses designed for SCR short circuit protection
  • Over temperature controller, password protected
  • Touch safe electrical components
  • Remote Heater Run Permissive, with Heater Running feedback

To provide our customers with the exact equipment needed for their specific operation, we offer a choice of several optional features to customize heater units. These options include:

  • Single — One electrical panel for one heater set
  • Dual — One electrical panel with reversing starters for two heater sets (i.e. redundant heaters).
  • UL Listing for General Purpose and Hazardous Classified Areas
  • Stainless Steel Enclosures
  • Enclosure space heaters and Air Conditioners for reliable operation in extreme climates

All of our Pre-Engineered Heater Power Panels meet NFPA 70, National Electric Code and are approved for hazardous locations.