Mobile Oil Purification & Transformer Dryout Systems

System Uses

These systems are designed to very thoroughly degas, dehydrate and remove fine particles and carbon fines to quickly restore the dielectric strength of transformer oil and insulating oil in transformers, load tap changers and oil filled circuit breakers.

They are available in a variety of configurations and process flow rates from 5 GPM to 50 GPM.

System Features

The heart of each system is a powerful purifier that uses heat in combination with deep vacuum to rapidly remove dissolved combustible gases and moisture to less than 10 PPM. The system also includes multiple stages of Absolute rated filters for the removal of fine particles. Common options include Fullers Earth treatment vessels for acid reduction, processing and storage tanks, 3-Phase electrical generator to supply the proper power to the system and oxidation inhibitor introduction devices.

Most of these Mobile Oil Purification Systems (MOPS) include powerful vacuum pumps with auxiliary connection points that allow for easy connection to transformers in order to apply deep vacuum during maintenance or commissioning of new units.

We build these systems in custom heavy-duty trailers and 4 X 4 box trucks with a long list of options to meet your specific needs. We specialize in delivering powerful systems in compact and highly portable and maneuverable platforms for use in sub-stations, power plants and switchgear yards.

Please inquire and let us help select the features that best meet your requirements. We offer rugged designs and options to meet nearly any application.

Oil Purifier Case Example

The U.S. Bureau of Reclamation Grand Coulee Dam, the largest power plant in the United States and the second largest hydro power plant in the world, selected High Purity Northwest Inc to build a new state of the art oil purification system to purify turbine oil. This system was built with a custom footprint and component orientation to fit in the exact spot where the old oil filtration system was. This system replaced an aging Alpha De Lavalcentrifuge and filter press.

This new High Purity Northwest Thermo-Vac System very completely removes free and dissolved water, dissolved gases and particulates from the oil at a process flow rate of 30 GPM. The system recirculates the oil in the dirty oil tank until it reaches the cleanliness levels and dryness levels specified and then the oil is simply transferred to the clean oil tank where it is then ready to be transferred back into a generating unit.

This system has all of the safety features built in to allow for long run times of unattended operation. The Allen Bradly control system also allows for remote monitoring of the operation. The system also features an on-board oil condition monitoring device that gives real time ISO 4406 Oil Cleanliness Codes and moisture in oil content. This feature allows an operator to see the system working and know when the job is complete. This system performance is vastly superior to the older system while also being much easier to operate.

System Examples

The US Bureau of Reclamation, US Army Corps of Engineers and US Naval Weapons Special Weapons Testing Lab choose High Purity Northwest Systems.

Mini MOPS for use on small to medium size transformers

This system is being used to degas pad mount transformers at a wind farm.

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