What are the main structures of dry-type transformers and what are the functions of the various components?
To put it simply, a dry transformer is a transformer whose core and winding are not impregnated in insulating oil.
Dry type transformer: rely on air convection for cooling, generally used for local lighting, electronic circuits and small capacity transformer in power system, turbine, boiler, general ash, dust, etc. are variable variable variable dry desulfurization, ratio of 6000V/400V, used to load with rated voltage of 380V.
Structurally, they can be divided into two types::(1) solid insulated encapsulated winding(2) non encapsulated windingStructure features of dry type transformer::1. iron coreThe high quality cold rolled grain oriented silicon steel sheet is adopted, and the core silicon steel sheet adopts 45 degree fully inclined joint, so that the magnetic flux passes along the joint direction of the silicon steel sheet.The 2. winding has the following kinds:(1) winding type;(2) filling with epoxy resin and filling with sand;(3) glass fiber reinforced epoxy resin pouring (i.e., thin insulation structure);(4) a plurality of strands of glass fiber impregnated with epoxy resin winding type;(usually 3, because it can effectively prevent the cracking of the resin and improve the reliability of the equipment).
