Medium Voltage Heaters

Medium voltage heater with operating voltage up to 6.6 KV, fabricated using MgO-based preforms for large industrial heating loads.

Medium Voltage Heaters
Process & Air Heaters

A heater operating at a voltage greater than 1000 V is considered a Medium Voltage Heater. Medium voltage heaters offer several economic advantages over low voltage heaters for large heating loads. Instead of loose MgO powder, the medium voltage heater can be fabricated using a preform made from electrically insulating, thermally conductive material (MgO). The heater can be fabricated as single-ended or double-ended.

These heaters are commonly used in applications where high power and temperature requirements are necessary — large industrial processes, power generation facilities, oil refineries, chemical plants, and other heavy-duty applications. They deliver significant heat efficiently, making them suitable for heating large volumes at low installation cost.

Specifications

Technical Specifications

RatingUp to a few Mega Watts as per requirement
VoltageUp to 6.6 KV
Design Temperature-40°C to 650°C
Design PressureUp to 350 bar(g)
Pressure VesselLTCS / CS / SS, Alloys etc.
Heating ElementsMineral filled insulated Heating Elements or Tubular Heating Elements with Ni-Cr (80-20) heating coil and suitable outer sheaths
Terminal EnclosureAs required (Weatherproof or Flameproof)
InstallationHorizontal / Vertical
Control SystemThyristor control panel + Local control stations (Safe or Hazardous area)
Protections & ControlElement skin temperature control, earth leakage protection, overload current protection, temperature class protection (hazardous area)
Benefits

Key Advantages

  • High operating efficiency
  • Low operation and maintenance cost
  • Reduced labor cost
  • Economical for industries requiring heavy thermal loads
Applications

Where It's Used

  • Oil & gas industry
  • Refineries
  • Power generation
  • Chemical plants
  • Heavy-duty industrial processes
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