Dielectric Dissipation Factor and Resistivity @ 90 ºC (IEC 60247)

These tests measure the leakage current through oil. This is a measure of the degree of deterioration or contamination of that oil by soluble polar products and/or ageing products/colloids (resulting from oxidation of the oil it self or from the solution in the oil of external contaminants or materials used in the construction of the […]

Furan Analysis (IEC 61198 Modified)

As the cellulose insulation breaks down, one of the by-products which dissolves in the oil are Furans. We look at the five distinct furans 2-furfural (2FAL), 2-furfurylalcohol (2FOL), 2-acetyl furan (2ACF), 5-methyl-2-furfural (2MEF) and 5-hydroxymethyl-2-furfural (2HMF). Together with Dissolved Gas Analysis this analysis gives a very good guide to cellulose Insulation Degradation, which will tell […]

Dissolved Gas Analysis (DGA) (IEC – 60567, IEC – 60599 and IEEE C57.104-1991)

This test uses the total gas extraction method and can indicate degree of cellulose insulation degradation and any incipient (initial) fault that may be occurring in the transformer. Gases that will be analyzed: Hydrogen, Oxygen, Carbon Monoxide, Carbon Dioxide, Methane, Ethane, Ethylene, Acetylene, including percent gas by volume and combustible gases, also we give you […]

OQIN (Oil Quality Index Number) (WP 222)

these number will shown to us, when we need to replace or reclaime oil of the transformer.

Breakdown Voltage (IEC 60156/AS 1767.1)

this test measures the suitability of oil to withstand electrical stress. High level of dissolved matter and solid particles in the oil will reduce the breakdown voltage of the oil.