if the synchronizing b/w
generator and busbar not
complete and we close the
out going circuit breaker
of generator then what
happen ?




Answers were Sorted based on User's Feedback



if the synchronizing b/w generator and busbar not complete and we close the out going circuit ..

Answer / sheikh

if synchronization b/w generator and busbar would not be
completed and if you close the out going CB then generator
have gone to over current tripped or reverse power tripped

Is This Answer Correct ?    3 Yes 0 No

if the synchronizing b/w generator and busbar not complete and we close the out going circuit ..

Answer / hamuel vilho

the generator winding wire will become hot and get broken which lead to linkage and it will get damaged,NB it is very expensive to repair winding wire, never try to close the circuit breaker if they are not in the same phases, frequency,

Is This Answer Correct ?    1 Yes 0 No

if the synchronizing b/w generator and busbar not complete and we close the out going circuit ..

Answer / milinda4p

IF the synchronization does not complete and if you close a cct breaker a severe arcing may occur and generator will trip instantaneously. Because the Generator sides voltages and bus side voltages do not match. To match the volatges following has to satisfied.
1. voltage magnitude
2. phase angle difference - 0
3. phase sequence - same
So at this condition there might be present voltage or phase angles or phase position mismatches. Say for example there exists a voltage magntude mismatch of 1 kV and when you close the cct breaker contact points have that voltage across them and this will cause severe current through contact points of breaker

Is This Answer Correct ?    0 Yes 0 No




if the synchronizing b/w generator and busbar not complete and we close the out going circuit ..

Answer / kk

First of all check sync relay will not permit to sync due to control ckt configuration, perhaps if it did then gen bkr would tripped in reverse power (32P relay) acted.

Is This Answer Correct ?    0 Yes 0 No

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