What is the Indian standard for transformer oil filtration, and where can I find the PDF?

The Indian standard for transformer oil filtration is IS 335:2018, which specifies the requirements for new insulating oils for transformers. This standard outlines the testing methods and quality parameters necessary for transformer oil filtration to ensure optimal performance and safety. You can find the PDF of IS 335:2018 on the Bureau of Indian Standards (BIS) website or through authorized distributors of Indian standards documents.