What type of isolation transformer used in UPS's??
It's Star-Delata Or Delata-Star????Why it is used????
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Answer Posted / mms
UPS OUTPUT FROM IGBT IS WITHOUT NUETRAL IT IS JUST PHASE
AND CUSTOMER REQUIRED PHASE AND NUTRAL FOR LOAD SO IN UPS
USE STAR OUT PUT TO THE LOAD HENCE THE USE "DELTA STAR"
TRANSFORMER USED IN UPS
FOR EXAMPLE IN SINGLE PHASE UPS OUTPUT(230VAC) WITHOUT
CONNECTING THE DEDICATED EARTH THIS TWO TERMINAL HAS OUTPUT
VOLTAGE FOUND 115 AND 115 VOLTS AND ALSO BOTH POINT TESTER
IS GLOWS THUS WE CONNECT THE EARTHING TO UPS
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