Power Transformer Oil Analyses

KEMA’s monitoring activities include the physical and chemical analysis of transformer oil.

Periodic checks are vital if transformers and other types of electrical switchgear are to be kept running and faults avoided. In this context, a number of analytical tests should be carried out on transformer oil at regular intervals. The findings provide insight into the quality of the oil and the condition of the system.

 

Insulation oil in high-voltage transformers and switchgear should be analyzed in order to determine the value of the following parameters:

 

-        appearance: color and solid contaminants ( ISO 2049 / IEC 60422)

-        breakdown voltage (IEC 60156)

-        water content (IEC 60814)

-        acidity or neutralization value (ISO 6618)

-        dielectric losses / specific resistance (IEC 60247)

-        interface voltage (ISO 6295)

-        gas in oil (IEC 60567)

-        corrosive sulphur(IEC 62535)

-        PCB's

-        furans

-        analysis frequency (IEC 60442).

 

KEMA has well-equipped laboratories in which numerous transformer oils are analyzed on a daily basis. The laboratory is ISO 9001 certified.