EFISIENSI TRANSFORMATOR DAYA 30 MVA 70/20 KV UNTUK DISTRIBUSI PRIMER DI PT. PLN ( PERSERO ) GARDU INDUK BOOM BARU

In the industry, the load of transformer usually varies. So when the load of transformer was changing, it will be impact the losses and the efficiency of transformer is not perfect, that is no one hundred percent. If the load of the transformer is high, so the losses of transformer will be high too. And also the efficiency of a transformer will be influenced by the higher power output of being measurable so the efficiency of a transformer is getting close one hundred percent and the higher of copper losses so the efficiency of a transformer is smaller, that is not getting close one hundred percent. Keywords: Transformer, copper losses, the efficiency of transforme