TOFM blog
Practical guides on transformer oil filtration, oil-water separation, oil storage and vacuum drying, written by the TOFM engineering team.
Transformer Oil BDV: What It Means, How It Is Tested and How to Improve It
A low BDV result is often the first warning that transformer oil is wet or dirty. Here is what the number means and how to bring it back up.
3 min read →
Transformer Oil Filtration Machine Buying Guide: 8 Things to Check Before You Order
Two machines with the same LPH can deliver very different oil. These eight checks show you what to compare before you place an order.
3 min read →
MS vs SS Storage Tank: Which Material Should You Choose?
Mild steel saves money. Stainless steel saves maintenance. Here is how to decide which one your tank actually needs.
2 min read →
Hydro Cyclone vs Air-Solid Cyclone Separator: How They Work and Where to Use Them
Both use a spinning flow and both have no moving parts. One cleans liquids, the other cleans air. Here is how to tell which one you need.
2 min read →
Oil Filtration Machine Spare Parts: What to Keep in Stock
A clogged filter or a worn pump vane can stop a shutdown job halfway. This list shows which spares to keep ready before the next job starts.
2 min read →How Transformer Oil Filtration Works: Heating, Degassing, Dehydration and Filtration Explained
Wet, gassy or dirty oil weakens a transformer from the inside. Here is what happens to the oil at each stage of a filtration machine, and how to prove it worked.
4 min read →How to Choose Transformer Oil Filtration Machine Capacity (500 LPH to 20,000 LPH)
Too small and the outage runs long. Too big and you pay for a machine you cannot move. Use this simple calculation to size your next filtration machine.
3 min read →
Oil-Water Centrifuge vs Vacuum Filtration: When Does Transformer Oil Need Both?
Vacuum filtration is excellent at drying oil, until the oil arrives with litres of free water in it. That is where a centrifuge earns its place.
3 min read →
Transformer Oil Storage Tanks: A Design Checklist for Utilities, Substations and Transformer Shops
Clean oil goes back into a dirty tank, and the filtration job starts again. A few design choices prevent that, and most of them cost very little at the drawing stage.
3 min read →
Vacuum Drying of Transformers: Why Moisture in Insulation Matters and How It Is Removed
Most of the water in a transformer hides in its paper insulation, not its oil. Here is how vacuum drying gets it out before the transformer goes into service.
3 min read →Discuss your requirement with a TOFM engineer
Share your oil volume, application and site details. We will recommend the right equipment, capacity and configuration.