Answer / guest

over current-a)instantaneous, idld,thermal earth fault,
under votage.

Answer / romeo

in addition, differential relays for current and voltage
are necessities also to monitor considerable leakage of
current and difference in voltage (in case of two leg
switchgear for a make and break design) to a magnitude that
will activate tripping action or prevent closing of the bus
tie.

What is the allowalable frequency variation in India and in US? Why there is the difference?

3 Answers  

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how the magnetic flux is said to be rotating & alternating?

4 Answers  

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can any one provide some material?

1 Answers  

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A 100KVA SINGLE PHASE TRANSFORMER 10000/200V,50HZ REQUIRES 300V AT HV SIDE TO CIRCULATE FULL LOAD CURRENT WITH LV SHORT CIRCUITED.THE INTAKE IS 1000W.THE % OF REGULATION ON FULL LOAD AT 0.8 PF LAGGING WILL BE HOW MUCH AND THE SECONDARY TERMINAL VOLTAGE ON 0.8 PF LEADING WILL BE

0 Answers   IAS, TATA,

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What is meant by class of CT&PT?

1 Answers  

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why the transformers are rated in kv not kw?

6 Answers   L&T,

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How to checked frequency drive output voltages?

0 Answers  

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Define rise time.

0 Answers  

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What is the resistance of the field winding of a d.c. Shunt generator kept low?

0 Answers  

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c++ write a program to use a fuction call "max"which accepts an intger arrey of size5.as an arrument and return the larger and smallest of the arrey to main without changing. the original changing of the original position of the element of the arrey.

0 Answers  

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how much percentage(%) of load can feed in power transformer?

1 Answers   Siemens,

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what is real time system type definition

1 Answers  

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