Model BA-OHM
Portable Oil Heating / Vacuum Pump System

This module combines the features of both the OHM and VPM onto a single system with integrated controls.


These economical Baron units are compact, light and portable systems for the assisted heat up of transformers being dried in the field. They can be used to preheat or boost heat by hot oil circulation prior to or during processing with a Baron oil purification trailer.

Systems are available with:

  • A wide variety of circulating pump sizes
  • A wide range of heater sizes
  • Optional particulate filtration
  • Vacuum systems for pumping vacuum on the apparatus during heat up

Standard Features

All of the features of the OHM and VPM modules are combined into a single unit with centralized controls for all components.

  • Heavy-duty, positive-displacement, direct-driven oil pump with relief valve
  • Low watt-density heaters designed for efficient heat transfer while protecting oil from scorching. Heaters are controlled automatically to maintain the desired setpoint by a solid state temperature and step-control system
  • Inlet suction strainer to protect the oil pump from the ingress of large particles
  • System pressure gauge
  • Rate of flow indicator
  • Inlet and outlet isolation valves
  • Inlet and outlet camlock couplers with dust caps
  • Operating and maintenance manuals are included with all systems

Electrical Requirements

All systems are available in every standard three-phase voltage up to 600 V in either 50 or 60 Hz. Specify desired voltage at time of inquiry.


A full range of accessories is available for these systems, including:

  • ASME code design (labeling available upon request) filter housing for particulate removal in the oil circulation loop. This filter uses industry standard 6" x 18" pleated paper 0.5 micron elements and is sized according to the desired flow rate.
  • Cuno Zeta Plus filter housing and elements
  • Totalizing meter
  • Oil and vacuum hoses
  • Weatherproof housing
  • Open-type or van-style trailer

What can we do for you?

Baron USA specializes in providing customized support, training, products and solutions to meet your specific needs. To learn how Baron USA can help you, call 93I.528.8476 or email us

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