The invention relates to insulating method and device of an
oil pump motor
stator of an
electric locomotive transformer powered up by a frequency converter. An electromagnetic wire with a
polyimide hybridized nano material insulating layer is adopted to manufacture a
stator winding, and a
stator adopts a random single-layer winding structure; an NHN (
nickel hydrazine nitrate) composite foil with the capacity of resisting
corona is adopted to carry out isolation and insulation treatment in a stator insulating groove, ground insulation and phase to phase insulation; then a motor stator is placed in a vacuum container containing a TJ1158H level
solvent-free immersion paint, and an inorganic nano material (such as an aluminum
oxide derivative with a grain size of 50-100 nanometers) accountingfor 3-5 percent of the total quantity of the immersion paint is added to the
solvent-free immersion paint; and integral-immersion and
drying treatment is carried out by utilizing a
vacuum pressure integral-immersion (also known as V.P.I) insulating treatment technology. A hard
corona resistant paint film is formed on the surface of the motor after the motor stator is subjected to the integral-immersion treatment, and after the motor is finally assembled, cleaned and arranged on the
transformer, high vacuum evacuation treatment is carried out on the
transformer, wherein the vacuum degree is the pressure of 1*10-5 to 1*15-6 milli Hg; and after a required vacuum degree is reached,
transformer oil is filled.