What type of isolation transformer used in UPS's??
It's Star-Delata Or Delata-Star????Why it is used????
Answers were Sorted based on User's Feedback
Answer / sam
its Delta and star only
to provide electrical isolation
Is This Answer Correct ? | 9 Yes | 3 No |
Answer / ravi
IT IS DELTA-STAR ONLY.
TO PROVIDE SINGLE PHASE POWER SUPPLY i.e PHASE TO NETURAL
CONNECTION IT IS USED AS A DELTA-STAR TRANSFORMER.
Is This Answer Correct ? | 11 Yes | 9 No |
Answer / 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
Is This Answer Correct ? | 6 Yes | 4 No |
Answer / biswajit sahoo
deltastar, beacause neutral is dedicated for ups only. its
neutra is not mixing with raw power neutral
Is This Answer Correct ? | 5 Yes | 4 No |
Answer / hussein
Delta-Star
reason: isolation transformer is to isolate the neutral.
However, the transformer input will be only 3 core cable
(RYB phases) which will be connected as delta, output will
be 4 cores (3 phases and one neutral) and clean earth which
will be commoned to neutral at the star point.
Is This Answer Correct ? | 1 Yes | 1 No |
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