Agents which Contaminates the Insulating Oil
Q. List the agents which contaminates the insulating oil.
The insulating oil gets contaminated when the following impurities are present in it. The impurities will reduce the dielectric strength of oil and further in may loose its dielectric and insulating properties.
- Water
- Dirt / dust
- Carbon deposits
- Sulphur
- Acids
- Gases
- Alcohols
- Grease
- Acetones and aldehydes
- Ketons
- Presence of sludge which is mainly an oxidation product, whose formation is accelerated by temperature and contact with air.