we have two trafo for 2 arc furnaces rating 8.5MVA , 11KV /240V with on load tapchanger on HV side max 14 taps.Make AEG germany . Trafo vector group Yd11 , %z = 10
Siemens persons performed ratio and vetor group test with eqiupment :Tettax AG Model # 2791HR
1- They read out the reading from...