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|We operate a 10 Mw facility and we have been experiencing
several trips due to fluctuations on the MVAR? We have
checked all issues related to the AVR and we have found all
OK? Can anyone help us? The grid voltage, internal voltage,
all regular parameters look ok. MVAR fluctuate and there it
goes the unit? What could be happening? Thanks!
|what is the difference between home inverter and online ups?
|Why is it that North America uses 60 hz frequency while
Europe uses 50 hz?
|Why stand-by earth fault relay and restricted earth fault
relays are connected between neutral and ground in
|how the direction of rotation in a dc shunt motor could be
|what is the difference in inductance and resistance.both
oppose the flow of current but how.resistance having + ve
power in both cycle while inductance having both power.
|Why 50hz and 60hz frequencies are used by the world, why
they are not taking 55hz?
|Explain the working principle of Vacuum circuit breaker and
Air circuit breaker
|When we change the tap position of 10MVA transformer it
suddenly tripped with Out of step indication and also with
Static differential relay indication, Transformer Bucholz
relay indn and Low oil level indication. Before 1 week the
same problem occured by changing the tap position. but at
that time only oltc bucholz relay activated. After testing
the TxR Relay team & PET team cant find any solid reason.
The values are ok also. So plz answer wat's the reason for
this incident? anybody plz help.
|what is the difference between neutral and earth?
|how much load should be given on 5 mva transformer
|What is the minimum value required for Neutral to Earth in UPS
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