Answer / altaf tachi

Over current
Earthfault
Revers Power protection(if it synchronised with Bus)
Loss of excitation

Answer / amit bose

over current protection, earth fault protection, overload protection

Answer / raul

Over voltage, over current, over speed, reverse power, over flux, loss of excitation. These r d major protection required for a synchronous generator.

What does bode plots shows?

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how much load 15kva dg set can bear

7 Answers  

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We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power factor setting : 0.90, then winding temp. Low. but when setting done : 0.83, then Winding temp. increase. WHY Why ? ? ?, plz give me answer.

4 Answers  

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how many bulb of 60watt at 300volt is used to maintain 0.25 amp.with valid reason?

4 Answers   Cords Cable, TATA,

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Describe how a salient pole / projecting pole rotor differs from a cylindrical rotor and state the application of each rotor respectively

3 Answers  

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If the output of a 100kva, 415v generator is stepped up to 11kv with a 500kva transformer,can the transformer be Loaded above the source generator loading?

2 Answers  

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How do I know if a transformer is saturated? I am doing the simulation of the saturation of a transformer, but what parameter tells me when a transformer is saturated? How do you calculate? is on the plate?, there is a rule that can help me? How could model? I understand the saturation occurs when the flow can no longer bind to the other winding, this is given to certain current, this current is the same that appears as the highest in the bale of features? Thank you for your help Eduardo Alvarez Guatemala

3 Answers  

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Why transformer rating in kVA not in kW?

5 Answers   ABB,

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i've iocl interview.. if you know the interview process please give me information..

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In 90 kva alternator that produce the output voltage is 115(p-n),200(p-p) at 1500 rpms means what ampere it produced ?

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what is an isolation transformer??? what is its purpose??? what happens if it is not used where it should be used?????

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In a running D.G set engine and Alternator is revolving at 1500RPM but no output in the terminal>>>>what to do?? someone told excitation problem ....please advice

3 Answers  

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