A small -size dry -type transformer for electric power field

The utility model provides a small -size dry -type transformer for electric power field, includes iron core, low voltage coil, high -pressure coil, insulating cylinder and the insulating body that holds, the iron core includes the indisputable yoke that vertical iron core post of arranging and level were arranged, the low voltage coil winding is in on the iron core post, the high -pressure coil winding is in on the insulating cylinder, high -pressure coil with low voltage coil accomodate in the insulation is held internally, scribble the carbon black resistance layer that is used for shielding the electromagnetic field on the side of insulating cylinder, low voltage coil's side surface scribbles the hot aluminizing metal level that is used for tentatively shielding the electromagnetic field, insulating upper surface that holds the body and lower surface all scribble the heat that is used for shielding the electromagnetic field and spout the zinc metal level, the insulating side surface that holds the body scribbles the tinning metal level that is used for shielding the electromagnetic field, the insulating dielectric constant who holds the body compares the little 2 -5 of dielectric constant of insulating cylinder doubly.