Transformer oil analysis

• Abnormal electrical or thermal activity

• Effects of transformer aging, including the condition of paper insulation – the

• primary indicator of potential transformer failure

• Information on the condition of the transformer and where it is in its lifecycle

  based on the transformer health index

• Cost-effective and efficient maintenance planning, refurbishment and

  replacement

Key benefits of Transformer Oil Analysis

• Assesses the internal condition of the transformer

• Helps calculate the probability of failure and end-of-life

• Identifies degradation before it leads to failure

• It is essential for effective maintenance and replacement strategies

• Allows testing to be done at low cost

• Offers excellent return on investment

Oil Diagnostic tests:

EA Technology offers a wide range of analytical specification tests, coupled with

expert interpretation and reporting systems. Typical testing on transformer units

includes:

EA Technology can also offer an additional range of bespoke testing such as:

Health Index Assessment for Transformers – Moving Towards a Condition Based Strategy

EA Technology has extensive experience of working with owners and operators of

high voltage equipment to understand degradation and failure processes. One

aspect of this work has been the development of Health Indices.

Health Indices for high voltage equipment combine relevant information on assets

to derive a single number that gives an indication of overall degradation and

proximity to end-of-life.

Health Index and Transformer Oil Analysis (Advanced Assessment)

By combining the oil analysis results with detailed background information, on-site

survey results and unrivalled sector experience, EA Technology can produce a full

Health Index assessment for each transformer. This information can then be used

to make strategic investment decisions regarding repair, refurbishment and

replacement programmes.

Transformer oil analysis can help in identifying which transformers could benefit

from life extension measures and alert operators to potential problems before they

lead to failure.

By moving from a time-based maintenance and replacement programme to a

condition-based strategy, you can bring considerable cost and efficiency savings,

while also increasing the reliability of supplies.

The Transformer Health Index Assessment Includes the Following Key Areas:

• DGA, Oil Quality and FFA analysis

• Current Health Index and probability of failure

• Ten-year future Health Index and probability of failure

• Years to End-of-Life (EOL) assessment

• Graphical depiction of Health Indexes for the transformer population

• Full written report of transformer details, results, discussion and

• recommendations

• Inclusion of on-site survey results, Partial Discharge Survey, Thermographic Survey and more