Best Application Scenarios for Insulating Oil Purifiers

Choosing the right insulating oil purifier ensures reliable transformer operation and efficient oil maintenance. Below is a clear, improved version of the selection guide.

 1. Routine Transformer Maintenance

Recommended: Single-stage or double-stage vacuum purifier

Use When: Oil needs regular dehydration, degassing, and breakdown voltage improvement.

 2. Severely Aged or Acidic Oil

Recommended: Regeneration oil purifier

Use When: Oil is dark, acidic, or contains sludge—problems that standard vacuum filtration cannot fix.

 3. Online (On-Load) Oil Treatment

Recommended: Online vacuum purifier

Use When: The transformer must stay energized while controlling moisture and gas levels.

 4. High Moisture or Emulsified Oil

Recommended: Double-stage vacuum purifier; add a centrifuge if emulsification is heavy

Use When: Oil appears milky, cloudy, or water-contaminated.

 5. New Equipment Installation

Recommended: High-vacuum purifier with evacuation capability

Use When: Drying transformer insulation and filling oil under vacuum during commissioning.

 6. Field or Mobile Maintenance

Recommended: Portable purifier

Use When: Working in remote locations or servicing small distribution transformers.

 7. Large Substations or High-Volume Systems

Recommended: High-capacity double-stage purifier or automatic online system

Use When: Treating large oil volumes quickly or maintaining long-term oil stability.

 8. After Faults or Repairs

Recommended: Strong vacuum purifier; regeneration if oil is degraded

Use When: Removing moisture, gases, or contaminants before the transformer is re-energized.