Standard Test Method for Approximate Acidity in Electrical Insulating Liquids by Color-Indicator Titration

Importancia y uso:

4.1 The approximate acidity of used electrical insulating oils is an estimate of the total acid value of the oil. As acid values increase, oil quality decreases. This is usually due to oxidation of the oil while in service. In general, acidic by-products produce increased dielectric loss, increased corrosivity, and may cause thermal difficulties attributable to insoluble components called “sludge.” This test method is adapted to a specific volume of oil; total acid values of 0.05 to 0.5 mg of potassium hydroxide per gram of oil is a range which is functionally significant.

Subcomité:

D27.06

Referida por:

D0117-22

Volúmen:

10.03

Número ICS:

29.040.10 (Insulating oils)

Palabras clave:

acidity; color titration; insulating liquid; neutralization number ;