Thank you for your lectures sir , they are very helpful in understanding concepts clearly. My doubts are : Why the rotor winding is not generally grounded? What happens if we connect it to the ac ground?
Sir, I have two doubts 1. Why in loss of excitation rotor speed increases ? 2. Why offset setting is given in loss of excitation relay ? Please explain sir
Sir how to identify whether exicter field winding or armature winding is good or not. If either of the one is not good then alternator will be tripped on reverse reactance
Sir what happened to the damper winding during loss of excitation..why it doesn't keep the speed under check when rotor speed become more than synchronous speed
Sir why field failure characteristic of relay is covered 3&4th quadrent. As during field failure conditions Impedance comes in 4 th quadrent only.pls explain.
When conductors cut magnetic flux at 90° emf induced is maximum because of flux cutting is maximum due to the flux is DC flux (constant, not changeable.)That mean conductors will cut the flux must be a not changeable value .In case of AC , generated output voltage will not be sinusoidal because AC current flux always changeable.
![Generator Rotor earth fault protection in hindi/Generator protection [Practical]](/img/n.gif)
Awesome explanation for rotor earth fault. Now only I understood its full concept
Thank u
Explained very well
Very good lecture Sir. Thanks
excelent sir
Thank you for your lectures sir , they are very helpful in understanding concepts clearly.
My doubts are :
Why the rotor winding is not generally grounded?
What happens if we connect it to the ac ground?
@@lecturesinelectricaleng sir , what will be the circumstances if we connect the dc field windings to Ac ground?
Very nice
Thank you.
Sir, please make a video for , I observed that 1500 rpm Generator (15 MW) has 4 pole but its exciter has 12 pole.
Sir, I have two doubts
1. Why in loss of excitation rotor speed increases ?
2. Why offset setting is given in loss of excitation relay ?
Please explain sir
i want to know sir, what is the purpose of isolation transformer and how it work.
Sir how to identify whether exicter field winding or armature winding is good or not.
If either of the one is not good then alternator will be tripped on reverse reactance
Thanks sir
Sir , what is the use of auxillary ac supply and isolation transformer?
Sir what happened to the damper winding during loss of excitation..why it doesn't keep the speed under check when rotor speed become more than synchronous speed
Rotor field wire connection to Relay , How it made
Sir why field failure characteristic of relay is covered 3&4th quadrent. As during field failure conditions Impedance comes in 4 th quadrent only.pls explain.
What is the purpose of bridge rectifier in the circuit
Sir incase of rotor winding opens what happens??
Sir what is the need of auxiliary supply?
Sir at 7:10
Sir, why field is always excited with DC only? What happened if excited with AC??
When conductors cut magnetic flux at 90° emf induced is maximum because of flux cutting is maximum due to the flux is DC flux (constant, not changeable.)That mean conductors will cut the flux must be a not changeable value .In case of AC , generated output voltage will not be sinusoidal because AC current flux always changeable.
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