Save time and money with oil processing as part of your transformer maintenance

October 5, 2017

Oil is the lifeblood of a transformer. If the oil level is low, contains excessive moisture or gasses, or is otherwise compromised, it is necessary to either replace the oil with new oil, which can be expensive, or regenerate the oil to like new condition to ensure that it is running at peak performance.

Without the proper level of clean oil in electrical equipment, you could be looking at unplanned down time at best, and complete equipment replacement at worst, potentially costing your company lost revenue and unnecessary man hours; not to mention being inconvenient for your customers.

Solomon Corp recently acquired a new oil processor to replace an older piece of equipment. “This new processor will offer state-of-the-art technology and processing speed, which will take our processing capabilities to another level,” said Sam Caudill, field service manager.

Oil processing explained

 Oil processing is performed so that impurities (moisture, particulates and gasses) are removed from transformer oil. It ensures the oil is clean and dry, and maximizes the life of the transformer. Processing should be performed after a transformer is assembled; after repairs are made for which oil is removed from the transformer tank, thereby exposing the windings to air; or when the existing oil needs to be processed to improve its qualities and remove impurities.

There are many different factors involved in transformer oil processing. If oil is removed from the transformer, moisture can be removed from the windings before oil is added to the tank by pulling a vacuum on the windings. The new oil processor is outfitted with dual 340 cfm screw vacuum pumps, which allows high levels of vacuum to be achieved quickly to maximize moisture removal. After the windings are suitably dry, oil is introduced to the transformer tank through the oil processor.

As the oil moves through the oil processor, the oil is exposed to vacuum, heat, filtration and a degasification chamber, all of which remove impurities from the oil and return it to usable condition. Depending on the total volume of the transformer tank and volume of oil, the work takes place around the clock, Sam said.

New processing rig part of company growth

 Rather than repair or upgrade existing equipment, the company made the decision to invest in a completely new rig. The increased speed and newer technology offered by the new equipment made it an easy decision. Solomon’s field technicians are trained in our factories by attending various industry training and events, as well as training directly with the equipment manufacturer, and are present to operate the equipment around the clock to meet the customer’s needs.

This new investment is a key part of Solomon’s field service growth mode, Sam said, requiring rapid expansion in both manpower and equipment across the map. “We are looking to add a new crew in our Grand Junction, Colorado location, as well as some potential satellite locations in the future,” he explained. The company is also looking to add some additional skill sets to its existing roster, such as circuit breakers and switchgear, which will allow Solomon to be a complete service provider and able to help in any scenario as needed.

Oil processing can be performed at multiple Solomon facilities or on location by the field service technicians using the new oil processor. Solomon has trained, experienced technicians who can handle all of your transformer needs, including oil processing, assembly, disassembly, repairs, component replacement, LTC repairs and complete project management.

As part of a routine maintenance, oil processing can help your save money by extending the lifetime of your equipment and keeping it running at optimal levels. For more information or to request a quote, visit us at or call 800-234-2867.