Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids

Importancia y uso:

3.1 In most of their uses, insulating liquids are continually in contact with metals that are subject to corrosion. The presence of elemental sulfur or corrosive sulfur compounds will result in deterioration of these metals and cause conductive or high resistive films to form. The extent of deterioration is dependent upon the quantity and type of corrosive agent and time and temperature factors. Detection of these undesirable impurities, even though not in terms of quantitative values, is a means for recognizing the hazard involved.

3.2 Two methods are provided, one for copper corrosion and one for silver corrosion. Copper is slightly less sensitive to sulfur corrosion than silver but the results are easier to interpret and less prone to error. The silver corrosion procedure is provided especially for those users who have applications where the insulating liquid is in contact with a silver surface.

Subcomité:

D27.06

Referida por:

D8180-23, D5222-23, D6871-17, D3487-24, D8240-22E01, D0117-22

Volúmen:

10.03

Número ICS:

29.040.10 (Insulating oils)

Palabras clave:

copper; corrosion; corrosive sulfur; elemental sulfur; free sulfur; insulating; insulating liquid; mineral; natural ester; oils; petroleum; silicone; silver; sulfur; synthetic ester;