Triple insulated wire or reinforced insulated wire that is made up of three layers, comletely insolates the primary from secondary of the transformer. Reinforced insulation provide various safety standards that eliminates barriers, inter layers tapes and insulating tubes in a transformer.
The most advantage of the triple insulated wire is not only higher breakdown voltage that is up to 17KV, but In addition to reduction in size and economy in material costs of the transformer manufacture.