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Transformer Oil Analysis

A Preventative Maintenance Cornerstone

As a universal industry practice, having your transformer oil routinely tested is an indispensable part of a preventative maintenance program. A transformer oil analysis allows you to monitor your equipment condition while detecting potential issues. During the transformer oil analysis, we monitor the oil’s water content, contamination, acidity, power factor, and dielectric strength in order to identify issues before they result in equipment failure.

With a routine transformer oil analysis, we monitor your oil on the following factors to preemptively identify issues before they result in equipment failure.

Moisture Content

Moisture Content: High moisture reduces the oil's insulating properties, resulting in equipment performance and a dialectic breakdown.

Acid Number

Acid Number: High acid causes oil to sludge, resulting in blocked oil canals.

Dielectric Strength

Dielectric Strength: A reduction in dielectric strength indicates that the oil is no longer providing electrical insulation effectively.

Liquid Power Factor icon

Liquid Power Factor: A high power factor indicates significant power loss within the oil.

Dissolved gas icon

Dissolved Gas Analysis: Varying levels of combustible gases in the oil indicate faulty operational or equipment problems. These gases include nitrogen, oxygen, carbon monoxide, hydrogen, methane, etc.

Combustible icon

Furans: Measuring furans helps identify the level of degradation within the cellulose paper.

Benefits of a Transformer Oil Test: 

  • Determines the condition of the equipment
  • Ensures equipment reliability
  • Reduces downtime and repair costs
  • Maximizes the life expectancy of the equipment
  • Identifies excessive overheating, overloading, arcing, and suddenly occurring faults
  • Detects loose connections, badly butted joints, and paper insulation embrittlement
Technician testing oil in a transformer
Technician inspecting a transformer

We recommend that your transformer oil should be tested periodically:

  • General and Physical Tests: Every 6 Months
  • Dissolved Gas Analysis: Every Year
  • Furan Testing: Every Two Years
View our Transformer Oil Analysis Line Card

Schedule a Transformer Oil Test

Have any questions about transformer testing? Or has your facility been in need of a test for a while? Reach out and our team will help you out as soon as possible.

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