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WHY WE NEED AUTO TRANSFORMER,WHERE WE CAN USE?
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Answer Posted / sudhir singh
For obtaining variable output voltage we need auto
transformer because in auto transformer much cupper is
saved.
The autotransformer is used as voltage regulator,in
excitation of various machine.
| Is This Answer Correct ? | 8 Yes | 0 No |
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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.
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