Question

What two types of insulation are used in a transformer and why?

Answer 1

Answer:

Materials commonly used in insulation systems are: (i) insulating fluid: mineral oil, synthetic, or vegetable oil (natural esters), (ii) conductor insulation: paper (kraft, Nomex®, enamel), (iii) 'solid' insulation, i.e. barriers, blocks, spacers, made of pressboard, transformer wood (densified wood), or wood