... improved. The Golden Triangle company developed S13-M-RL, S11-M-RL series three-dimensional triangular core power transformer which is ... -quiet green power transformer.FeatureSaving energy, reducing noiseS13-M RL of new energy-efficient three-dimensional triangular> Compared to S7 ... with the different performance indicators. > S7, S9, S11-M.RL allow deviation standard: The total loss of +10%, no-load ...