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Finally... The "story" is attached ! Regards, Phil Corso

MRasool... At least in the USA, there is no NEMA standard, yet. It does however, recommend the phenomenon be investigated! And, you will find that motor mfgrs vary so there is no general agreement as to which end is to be isolated ! Regards, Phil Corso

MRasool Reur question about Cross-Current Compensation.... I suggest you search for Jojo's 2007 response in Control.com archives as #: 1026241828 ! He suggests some rather simple fact-finding procedures. I would also suggest you start a new thread . Regards, Phil Corso

Thank you for your response that illustrated the solution! See, Due Diligence works! Regards, Phil Corso

Skbarc... If you're interested in a funny story about generator testing search under Magnifying-Glass with 1026199716 ! Regards, Phil Corso

Pnachtwey... Thank you for the enlightenment. Regards, Phil Corso

Mehboob... If you are unable to shut it down, I suggest the following: 1) Are you are sure it's hissing (air) and not buzzing (arcing)? 3) Have others given their opinion? 2) Try recording it with a microphone and then view the output on an oscilloscope to determine frequency? 3) Perhaps your...

Benpin... You said "indication" ! Was it actually measured somewhere else? Regards, Phil Corso

Andy I started teaching about 8 years ago, and use Jiffys Phil hil

Andy... This forum's old-timers are always on the ball. They never forget. I was asked, "What about "PE" ? Once more, I edited Jiffy's. I also changed the Heating Element's rated-current label to Ie, to make it more "visible ! Phil

Andy... Several forum posters contacted me off-line to advise I had inadvertently omitted the E.quations part of Jiffy's, so I edited it ! Phil

Andy.. Feel free to contact me anytime. [email protected] Phil

Andy, here is my answer using my Gi.Fi.E.S. method (pronounced Jiffy’s), where: o Gi means ‘Given’ o Fi “ ‘Find’ o E “ ‘Equation’ o S “ ‘Solution’ The procedure follows: Gi.ven: System Facts o Supply = 3-phase, 4-wire (3- current carrying Line conductors, and 1-...

Andy... The requirement you just proposed is interesting. Essentially you want to know if there is any situation which by accident could cause harm to the Heater Elements. I have to admit there is one, but to date no one has recognized it. Furthermore, it would have to be done deliberately by...

Andy (if I may)... I believe the fellas that alluded to destructive or disruptive events were referring to a phenomenon called "Displacement Neutral Voltage" ! Yes, it can occur ! But, only if the 3 'Y' loads are complex, meaning containing inductive or capacitive components! It isn't possible...

Andy... Is the source 3-phase, 3-wire, 400-V, or 3-phase, 4-wire 400/231 ? BTW, if one element is removed neither source above will endanger the remaining elements ! Nor will it trip a protective device! Full explanation will be illustrated when you answer the question above! Phil Corso

Andy1984... 1) What is the applied voltage ? 2) Is the entire assembly of 3 elements rated 9-kW ? Regards, Phil Corso

Curious.One... Whether Kevinchelo's source is 230-V, 1-ph or 3-ph doesn''t matter. The Phenix Core-Loss Tester requires a 1-phase, 2-wire, 480-V input! Phil Corso

Curious_One Is your comment addressed to Thread-Starter or me ? Phil

Kevinchelo_Rewinder 1) From an economic point of view I suggest higher voltages, i.e., 230/480, because it requires smaller windings, hence smaller physical size and cost. 2) Capacity... based on what you said was the the minimum required, i.e., 50-kVA ! 3) Perhaps less, if you can provide a...