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SolarforChange... the frequency is determined by the "source" to which the Ind-Gen is connected. In your case, 60 Hz! The speed of the steam-turbine driving the Ind-Gen is maintained at a rotational speed/frequency slightly higher than 60 Hz! An example follows: If the Ind-Gen, as a motor...

Siva... if you are unable to extract the information you need from the referenced threads please contact me directly at: Phil Corso (cepsicon[at]AOL[dot]com

Tech77... A) Range: The 1 to 100A range you have identified is the range of current normally expected in the protection circuit! B) Turns-Ratio: Because the ratio is 2500:1, then, any ampere-turns (ATs) produced in the primary, whether 2500-A in a bus passed thru the CT 'window' or 1-A in...

Process V... my error! You identified E as Excitation Voltage when you really meant internal Air-gap voltage, Egp! Regards, Phil

Power Value... please explain your derivation of the P and Q formulas which involve the product of E and V? Phil Corso

Kasun... another possibility! Same symptoms... different cause. A cylindrical-rotor for a large turbo-generator was being off-loaded from its transport carrier. As it was being lowered onto chocks positioned at each end of the rotor-shaft, the supervising turbine engineer, ordered the chocks...

Tech787... there is a simple way to test it, but the data you presented is conflicting! If the CT turns-ratio is 2500:1, then passing 2,500 A in a single conductor thru the window, produces an mmf of 2500 AT. Thus, a circuit connected to its secondary terminals will carry 1 Ampere. For the...

Kasun... can you provide some corroborating parameters such as Volts, Amps, MW, MVAr, Field Volts, Field Amps, vibration, temp, etc! Regards, Phil Corso

Ragab... for the record I would appreciate knowing the title of the text that explains, "... reactive power is not a power." CSA... Congratulations for your slow, albeit sure, continuing use of the term, VAr, instead of the term, reactive power! Hopefully, you have also noted it has spread...

Mohamed Ragab... because "Reactive Power" is not power. To learn why read the Control.Com Thread: http://www.control.com/thread/1026236550 "The Physics of... Electrical Power!" Phil

Mohamed Ragab... paraphrasing your specific question, "How does kVAr affect fuel consumption?", then 'd-' provided the right answer, "... more fuel... required... !" Now for the "How" part! Any increase in kVAr, either lagging or leading, will increase stator-current (ac) and rotor current...

Henny... If you provide the data requested, I can confirm my thesis about the cause! Conversely, if you now know what the cause is, please tell us! Phil Corso

Henny... also look at: http://control.com/thread/1285417132 Phil Corso

Henny... question 5) of my earlier post should have read six conductors per phase... Phil

College Student Ritika... yours is a very intuitive thread, and NO, you did not misunderstand! In fact, had you had gone a little further you could have answered the question I presented in my 23-Feb-11 (09:53) response to ??????'s Thread No.: http://control.com/thread/1298383238 "Power...

Henny... several more questions: 1) Is this a commissioning problem or a new problem in an existing facility? 2) Is the high-current present: a) during acceleration; b) just after application of DC to rotor; or c) while carrying a load? 3) Can you send pictures showing how the...

Siva... I suggest you search the Control.Com Archives. Start with the following threads: o 1026239176 o 1284199900 o 1307209459 Regards, Phil Corso [<b>Moderator's note:</b> the url that goes before the number is: http://www.control.com/thread/ ]

Henny... how about some detail, like: o Synchronous or asynchronous motor? o Voltage? o Starting method, DOL, reduced voltage, etc? o Single-core, 3-core, 3-1/2 core? o Cable mmq size? o Number of conductors per phase? o Current in each phase? o Distance between...

Jong... 1) I also forgot to ask... how many burners? 2) If it is your intent to reduce the frequency of unwarranted (false) trips, then what is your present trip-logic? 3) For example, does iginition and trip logic conform to NFPA 8501 (single burner) or 8502 (multiple burner? 4) Is...

Jon... I further to my earlier post: Is the flame-eye setup to "look" at the main-flame, or simultaneously "look" at both the pilot-flame and main-flame? Regards, Phil Corso