JDJ2-35(38.5) model Potential Transformer is one-phase double-winding,oil-impregnated type outside product, suitable to be used at A.C.50Hz power line with rated voltage 35(38.5)KV for voltage & energy measuring and relay protection of associated equipments. This model potential Transformer is suitable for power line of single-phase and three-phase. When it is used in three-phase power line, two potential transformers can be connected to be "V" line.Rated insulation level: 40.5/95/185KV; Product standard: IEC-60044-2, IEC186, GB1207-1997 (Potential transformer); Environental Temp.: Lowest temp.-30ºC,highest temp.40ºC,daily average temp. no exceed 30ºC; Creeping distance of surface meet class2 pollution requirements; Other technical data see below table: JDJ2-35 model potential transformer is made of silicon-steel piece type fold three-core pole type for its iron core. Second winding and first winding at middle pole. Second winding wind in insulation canister, first winding sub-sect symmetrically, wind in another insulation canister, two side of winding has static ring, outer-surface of head & end has static shield. Two winding is multi-layer cylinder type, first winding covers second winding, there's oil path between windings. Machine is fastened at the oil-box cover by nip tool, box cover is equipped with oiling stuff and oil tank. Top of oil tank has breathing-hole stuff, bottom is equipped with oil stuff, its side is equipped with panel oil-meter , oil tank's cliff is equipped with earthing bolt and oiling stuff, box bottom is welded with bracket which has four installation holes.