... 1) Frequency; 50hz/60hz 2) Phase, 3-phase,isolation 3)ISO9001/2008.CE.CCC 3-phase dry type isolation transformerApplication; Our transformer produce out with ... series similar products standard, the dimension and the packing size already standard, now same as SIMONS 4AP series, under ... connection symbol, rating of winding, rectifier curcuit, weather with iron case or not, to satisfied all client's ...