Transformer Oil Filtration Service

Approx. Rs 1,000 / LitreGet Latest Price

Approx. Rs 12 / LitreGet Latest Price

Transformer Dehydration (also called oil filtration & vacuum dehydration) is the process of removing moisture, dissolved gases, and impurities from transformer insulating oil and windings using a high-vacuum filtration plant.

• Heating oil to 50–60°C

• Multi-stage filtration (coarse, fine, micro)

• High-vacuum moisture removal

• Degassing of oil

• Hot oil circulation in transformer

• Vacuum drying of windings (offline units)

• Pre & post oil testing (BDV, PPM, acidity)

• BDV: ≥ 60–70 kV

• Moisture: ≤ 10 ppm

• Gas content: ≤ 0.5%

• Tan delta & acidity improved to standard limits

• Improves Insulation Strength – Higher BDV prevents internal flashover.

• Removes Moisture – Reduces risk of breakdown and partial discharge.

• Extends Transformer Life – Dry insulation ages slower.

• Reduces Heating & Losses – Clean, dry oil improves cooling efficiency.

• Prevents Failures – Eliminates sludge, gases, and contaminants.

• Cost-Effective – Restores oil without the need for oil replacement.

• Improves Reliability – Ensures safe, stable transformer operation.

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