Insulating Oil Testing - LabPetroleumTest

Professional solutions for evaluating the electrical and chemical performance of insulating oils used in transformers and high-voltage equipment.

Insulating oil testing is essential for evaluating the electrical and chemical performance of insulating oils used in transformers and high-voltage equipment. Regular testing helps detect contamination, aging, and degradation that may affect insulation reliability.

Our insulating oil testing solutions are designed for laboratories, utilities, and maintenance teams, supporting accurate analysis in accordance with IEC, ASTM, and other international standards.

Insulating Oil Testing Parameters

Dielectric Breakdown Voltage

Measures the dielectric strength（BDV） of insulating oil under high voltage conditions.

Moisture Content

Determines water contamination that can significantly reduce insulation performance.

Acidity ( TAN )

Indicates oil oxidation level and aging
condition.

Dissolved Gas Analysis (DGA)

Analyzes dissolved gases to assess potential transformer fault conditions.

Interfacial Tension

Reflects the cleanliness and aging degree of insulating oil.

Resistivity

Evaluates the electrical resistivity related to oil purity and contamination.

Insulating Oil Testing Instruments

Dielectric Breakdown Voltage Testers

Testers for testing moisture content in insulating oils

Moisture Analyzer

A tester for testing acidity value of insulating oils

Acidity Testers

A tester for testing dissolved gas in insulating oils

Dissolved Gas Analyzer (DGA)

Interfacial Tension Tester

Dielectric Loss & Volume Resistivity Tester

Additional Insulating Oil Testing Instruments

Related Oil Testing Applications

In addition to insulating oil testing for transformers and high-voltage equipment, our solutions also support testing for insulating oils used across power generation, transmission, and industrial electrical applications.

>>> Lubricant Testing

>>> Petroleum, Fuel & Industrial Oils Testing

Why Choose Our – Insulating Oil Testing Solutions

IEC & ASTM Compliance

Instruments designed according to international testing standards.

Multiple Models Available

Solutions for laboratory, field testing, and different accuracy needs.

Professional Technical Support

Assistance in instrument selection, application, and operation.

Not sure which insulating oil testing instrument fits your application ?
Our team can help you select the right solution.

FAQ – Insulating Oil Testing

1. What are the key parameters in insulating oil testing?

A: Key parameters in insulating oil testing include dielectric breakdown voltage (BDV), moisture content, acidity (total acid number), interfacial tension, and dissolved gas analysis (DGA).
These parameters help evaluate the insulation performance and aging condition of transformer and insulating oils.

2. How do I select the appropriate insulating oil testing instrument?

A: The selection of an insulating oil testing instrument depends on the testing parameter, applicable standard (IEC or ASTM), required accuracy, and whether the test is performed in the laboratory or on site.
Different instruments are designed for specific testing methods and application scenarios.

3. What is the difference between laboratory and on-site insulating oil testing?

A: Laboratory testing typically offers higher accuracy and controlled conditions, making it suitable for routine analysis and research applications.
On-site insulating oil testing focuses on portability and fast results, allowing maintenance personnel to assess oil condition directly in the field.

4. Which standards are commonly used for insulating oil testing?

A: Insulating oil testing is commonly conducted according to international standards such as IEC, ASTM, and ISO.
Following these standards ensures consistent test procedures and reliable comparison of results across different laboratories and applications.