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Answer Posted / sripellirajukumar
hi ,
this is rajkumar
u were said about r very silly points
here somewhat depth differences there as follows
current transformers
1.primary winding turns r very less .
2.CT means it is step up transformer.
3. the primari and secondary winding turns ratio is in the
form of 100:5.
4.this CT is used to measure currents in high voltage
alternating current ckts.
5.secondary winding of CT must be closed.it should never be
left open under any circumstances..other wise it CT
winding insulation will damage,and also that will effects
on the people who r doing the measurements.
potential transformers
1.primary winding turns r more as compared to secondary turns
2.PT means it is step up transformer.
3.the primary and secondary winding turns ratio is depends
on the range of lowrange voltmeter (which is used to
measure voltages in lab)
4.PTs r used to measure high alternating voltages.
5.here no need to specify about closing of PT because we
will be connecting low range voltmeter...
thanks,,,,,,,,
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