... 4, good quality and low price JLSZY-35,33,20 outdoor three phase transformer Parameter of voltage part ProductTypeRatedvoiltage ratio(V) Rated ... transformation ratioSingle transformation ratio5-105,1012.5 0.2/20 0.2S/2010-20201.53.7515-30302.4620-40403.07 ... security factor FS≤10If you have special requirement for our product, please add note explanation. JLSZY-35,33,20 outdoor three phase transformer