Elektroniy tabdilgar (ET) silsilai PND (tabdilgar-i doimiy voltaj) nomi 140 kVA. ET silsilai PND baroi afzudani yoki kam kardan voltaj, mutanosib kardan darajai doimiy voltaj, ta'min kardan iste'molkunandagon ba darajai mukhtalif voltaji doimiy tok.
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