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What is 100%
protection of
generator? Why
95% protection
is used not 100%?

Answer Posted / sandip upare

Generator having lot of protections rotar-stator wdg. earth
fault,over voltage,over current etc.
For that each relay having setting from 0-100 per. with
time period in seconds
According to type of fault we have to set the setting

example :- for earth fault protection we have set upto 50-
70per. because if we set to 100% every and each small
leakage relay trip

so my thinking is only that the setting of each protection
is depend up application of DG only on what load

Is This Answer Correct ?    18 Yes 25 No



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