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Anonymous... see Control.com Thread http://www.control.com/thread/1026212338! Regards, Phil Corso

Genman... the grid connection serves to provide backup, not stability! Can you send a simplified Single-Line-Diagram of your plant’s configuration? Phil Corso (cepsicon [at] aol [dot] com)

Genman... thank you for the quick reply. In my opinion, you have a "Tail Wagging the Dog" situation. There is lack of data to offer a meaningful solution! To summarize, there are three gensets, separated by cables that introduce relatively large impedances. And, a grid connection that seems...

Genman... putting short-circuit duty and economic strategy aside for the moment, following is what I have gleaned, thus far: A) The lead-in to your thread say you want to parallel a 10MW unit with a 20MW unit. B) Your post says there are qty 2, 12.5MVA units and qty 1, 25MVA Unit, all...

Genman...do the three alternators have the same pf rating? Regards, Phil Corso

Markinnh... you had posted that cost was a major concern. How about your labor as a minimum, plus some $100 - $200 for optional bells & whistles? Regards, Phil Corso

Markinnh... did you and your Navy buddies accomplish your goal? Regards, Phil Corso

Kapil... for those situations during which sequential event alarms are not available I suggest using the idea shown in Control.com Archives. The thread # is 1264601170! Regards, Phil Corso

AJ... the system you describe is called an NGT or Neutral-Grounding-Transformer (NGT) ystem. I suggest you search the Control.com archives and acquaint yourself with the basics. Regarding specifics; does the 240 V value represent the generator line-line or phase-neutral voltage? Please...

Kapil... your question was not very specific so my reply will be centered on the definition in IEEE Std 100. It's titled "The IEEE Standard Dictionary of Electrical and Electronic Terms!" 1. Servomechanism: (A) A feed-back control system in which one of the systems signals represents...

Control Valve Size determination... see: http://control.com/thread/1275377381 Regards, Phil Corso

Kedgamatic, Dave... my point is that a step-down transformer is probably being used to supply the 50A, 6.3V "Sealer" load. Unlike a 3-phase power transformer, a single-phase control-type transformer has a lower impedance! If a short-circuit occurred down-stream of the #8 AWG wire, the current...

Kedgamatic... what is the waiting time between cycles? Phil

Kedgamatic... if you are altering/modifying another manufacturers’ commercially available equipment/device without their permission, you are liable for any consequence related to your modification! Wiring, terminal-connectors, crimp-connectors, solder-lugs, step-down transformer... anything...

GAJENDRA... is the current displacement (14mm) exactly twice the original displacement (7mm)? If so, how do the thrust-bearing temperatures compare? Regards, Phil Corso

Kedgamatic... while RMS equivalent is low, I believe you should be more concerned with voltage- drop. Regards, Phil Corso

Cecelia... you must also define "barrel!" For example: o Barrel (US) = 31.5 Gallons (US) o Barrel (Br) = 36.0 Gallons (Br) o Barrel (oil) = 42.0 Gallons (US) Regards, Phil Corso

RY... I suggest you contact "Surplus Record" in the USA. Their web address is www.surplusrecord.com. Note: The replacement Xfmr is not necessarily in the USA. Regards, Phil Corso

Shahvir... the comparative losses study you asked for was provided in the year 2000! Control.com thread # 906472472 illustrates for the condition when transmitted power is equal and balanced, then, the 3-ph case results in a total copper weight just 75% that of both the single-phase and 4-ph...

Electrics... your 04-Nov-10 questions: (05:36) Your constant for the 3-ph case, 1.5 is wrong. Also, where did you get 1/2 as the E multiplier? (06:31) The development of the constant for the 3-ph case (and subsequently the 12-ph case) is illustated in Control.com Thread # 1026239915...