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Keith... can you forward a simple sketch or Single-Line-Diagram illustrating you system? Regards, Phil Corso (cepsicon[at]aol[dot]com)

James... can you forward a simple sketch or Single-Line-Diagram illustrating the connection between the 440 and 220 volt systems? Phil Corso (cepsicon [at] aol [dot] com)

Ali... I have sent an e-mail requesting additional information. In the interim, my answer to each of your questions is, YES! However, there are specific restraints! Regards, Phil Corso

Ali... thank you for the SLD. I have sent you an e-mail requesting additional information. In the interim, my answers to both of your questions are, Yes! Details will follow. Regards, Phil Corso

Ali... can you send a simple sketch or Single-Line Diagram? Phil Corso (cepsicon [at] aol [dot] com)

Verne Lund... use a Vibrating-Reed Tachometer! Regards, Phil Corso

Curt... there are two sources of "sound!" The first, called "white-noise," is that sound produced by mechanical motion, when for example, the cooling fan is rotating. The second, and most offensive to human hearing, is caused by magnetic flux through the core laminations. Known as...

Ali... unless the new conductor "area" is nearly equal to the original the solution proposed will not work! There are three reasons: 1) Current Flow Current, not Volt Amperes, flowing through a conductor in a slot produces magneto-motive-force or mmf. Because your proposal produces less...

Seifj... see http://control.com/thread/1291132911! Regards, Phil Corso

Grishma... what you hear is the movement of the magnetic structure at twice the supply frequency! Regards, Phil Corso

Ali... I don't believe that rewinding just the field-coil will work because the smaller wire-size will not fill-out the slot, thus affecting air-gap flux density! Phil Corso

Pola... send me your e-mail address! Regards, Phil Corso (Cepsicon [at] aol [dot] com)

Ali... I should have asked the following question first: Why do you want to change the voltage of the pilot-field, not the main-field, from 12V to 70V? Phil Corso

Ali... 1) Do you mean rotor values are 190V, 1600A? 2) Is the alternator a brushless machine? Phil Corso

Ali... are you sure about the parameters you presented? Excitation is only 0.0024 percent of the alternator's MW capacity! Regards, Phil Corso

Sarmad... Have you considered the application of an M of N voting scheme for the Fire Protection system? Regards, Phil Corso

LMGS... I suggest you post a new thread outlining your problem since it is not typical of what this thread provides regarding education of Control.Com members. That said, here is my suggestion: This kind of a problem is best solved by developing an OMT or Operations Matrix Table, similar...

Sd... the answer is NO! For the Ynd1 xfmr, the lo-voltage (delta) winding's phase-to-centroid vector, LAGS the hi-voltage (wye) winding's phase-to-neutral vector, by 1x30 or 30 deg. Conversely, for the Ynd11 xfmr, the lo-side LAGS the hi-side by 11x30 or 330 deg. (It can also be said...

Genman... has your question been resolved? Regards, Phil Corso

Ashutosh... please add the following to Par F) subpar (b): Furthermore, if the line currents were averaged, i.e., 53.3A, the power reading should have been about 3.0MW! Phil C.