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Hemal... also search Control.Com Archives for Thread # 1285417142, which discusses a 1,200 A/phase circut! Phil Corso

Aryan... thank you for the reply to my 27-Dec-10 (11:00) question. What about answers to my 26-Dec-10 (10:03) questions.

Hemal... you need not concern yourself with the terms delta or wye. The pertinent requirements are amperes, material, single or 3-phase, voltage, and some installation details. I suggest you search the Control.Com Archives, starting with thread # 10262367721 ! Regards, Phil Corso

Ariel... was the problem resolved? Phil Corso

Phil... deriving a DC power pulse from an AC source is erratic because the triggering point along the AC waveform is random. Thus, the current ramp-up is not consistent. Regards, Phil Corso

Sibanda... see: Control.Com Thread Topic http://control.com/thread/1026197819 Regards, Phil Corso

Ali... start with http://control.com/thread/1245083704 "The Physics of... MV Grounding!" Phil Corso

Ali... I suggest you search the Control.Com archives. Phil Corso

Mehdi... IEEE Std 100 defines "Load Shedding" and a number of IEEE Std’s discuss it, but none provide a step-by-step procedure. Power providers and Protective Relay vendors have their own methodology using Protective Relays, in conjunction with PLCs, applied to system disturbances such as...

Adeel Farrukh... what is the energy source you are using to move irrigation water? Phil Corso

Aryan... is this transformer for an Electrical-Arc Furnace? Phil Corso

Ronak... I disagree with your position that the generator's kW output can be (arbitrarily) extended to its nameplate kVA rating @ unity power-factor! The generator's output is restricted by the prime-movers capacity! Regards, Phil Corso

Amin... One possible scenario follows: If instrument's contacts are "held-closed" when monitored condition is 'Normal', then for a common-mode failure, such as loss of power, the resultant output-action will certainly be confusing! Regards, Phil Corso

Aryan... please provide some detail: 1) Manufacturer of Instrument? 1-ph or 3-ph? What is instrument's output test-voltage? Are Input/Output voltages printed-out, or only ratio value? Finally what is calculated error? 2) Were open-circuit and short-circuit tests also performed on...

Aryan... following is a corrected Par C): C) Turns-ratio (3-ph xfmr) Note, that for Yd winding-configuration the Turns-ratio's are not equal to the Voltage-ratio's because Np is proportional to phase-voltage (line-to-neutral) while Ns is proportional to line-voltage (line-to-line). Thus, for...

Aryan... first I want to clear up a two misconceptions: (a) the numerical index ('hour' number) representing the phase displacement between the primary and secondary voltages is not at all involved in determining neither Voltage or Turns-ratio's; and (b) a 3-phase D-Y or Y-D conventional power...

Saqib... what is diameter and mass of platform being positioned? Regards, Phil Corso

Yes... there is a very timely article on the subject in the Dec 2010 issue (Vol, No 12) of "Maintenance Technology" magazine. Authored byJane Alexander (Editor of Magazine) with John Schukander (TAS Online Ltd, S. Africa) titled "Making A Business Case for Pump Improvement!" The magazine's...

Umesh... the 31-Aug-10 (19:01) of this thread advises a course-of-action when the percent impedances are different! Phil Corso

Ariel... did you checkout rpm sensor? Regards, Phil Corso