Re: [teslafy] Re: Video clips of ferrite conductions.
- measurements need to be with a storage scope. Meters fed a waveform other than they are calibrated for are notorious for meaningless numbers.
From: Harvey D Norris <harvich@...>
Sent: Sun, February 6, 2011 10:38:40 AM
Subject: [teslafy] Re: Video clips of ferrite conductions.
--- In firstname.lastname@example.org, "Harvey D Norris" <harvich@...> wrote:
> 2.8DCA & 3.6 DCA 3/8th inch width ferrite conductions & corresponding 3 phase AC inputs.
> Camera Records made before computer crash, some two weeks old.
Descriptions added to video;
The top red meters are stator line amperages and the middle grey meters the phase amperages. In three phase for a delta delivery, the stator lines contain 1.71 or (sq rt 3) times the phase amperages. Yet at 1:41 in the videos the sum of the stator lines @ 8.54A EQUALS the sum of the phase amperages. Thus for this example using summed amperages of the phases themselves; ~70% more current exists as the effect of RESONANT RISE OF AMPERAGE. It is these outer delta AC currents that become the source of the DC currents across the ferrite by intervening rectifications of the three phase AC source currents. Note that the ferrite also has a non-linear resistance, it instead looses resistance with the amount of heat generated. At the start of video 25VDC enabled 2.8 A or an acting resistance of 8.9 ohms. At the ending of video 20VDC enables 3.6A or 5.5 ohms. The reactance of the megacable spiralled delivery lines are 2.3 mh@ 465 hz or 6.7 ohms.