What is the significance of vector grouping in Power Transformers??

3 Answers  

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What is restricted earth fault protection ?

1 Answers  

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How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.

0 Answers   Taj Group, Tata Steel Limited,

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Mathemetical Relation Between KWRH and KWH?

3 Answers   UPPCL,

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Pls explain about vfd control?Where it is used, Give some example?

3 Answers   Siemens,

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hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx

0 Answers   Ansaldo,

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in thermal power plants by opening the turbine governor valve increase the generator load. how

3 Answers  

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Going in for a three phase motor or a single phase motor, what factor should be considered for this? For eg., to pump water to certain height and such domestic applications, which motor is suitable?

1 Answers  

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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.

3 Answers  

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What is the current carring capacity of 0000SWG and 0SWG overhead solid bare copper conductor. If possible please provide reference for various sizes Vs current ratings

1 Answers  

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Define thermal resistance in the context of power amplifier.

0 Answers  

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Define ohm’s law for a.c (alternating current)?

0 Answers  

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