The PCE830 will take this into account for all of the harmonics automatically once it is setup properly. It should be a nearly perfectly resistive load until over 100kHz, which makes it only a small problem with using the inline meters. Once they have the PCE setup properly, then they are in good shape. They have the option to put the SCR controller into zero-crossing mode (which they should do if they use it). However, now they are now switching to using the variac as the source. Then it gets much simpler.
On Tue, Feb 3, 2015 at 1:00 PM, David Roberson <dlrober...@aol.com> wrote: > I am following their comments as best I can. If they are using a > waveform cutting circuit such as with SCR's then the fundamental current > will be shifted in time as compared to one that is not cut up. > > I would measure the RMS voltage at 60 hertz, and read the fundamental 60 > hertz current. Then multiply these by the COS of the phase angle between > them. It does not work to use the RMS values of these waveforms (including > all harmonics) to obtain the product. > > Dave > > -----Original Message----- > From: Bob Higgins <rj.bob.higg...@gmail.com> > To: vortex-l <vortex-l@eskimo.com> > Sent: Tue, Feb 3, 2015 2:55 pm > Subject: Re: [Vo]:MFMP testing schedule > > There was a voltage multiplier set in the setup of the PCE that has been > corrected. In-line measurements are being used to verify the setup of the > PCE. I don't think they should be using the SCR controller - I would > rather they use the variac. The load should be pretty much flat-on > resistive for all of the harmonics. They are currently measuring a PF=1. > The concerns with the SCR controller are asymmetric +/- switching and noise > that could be introduced into the thermocouple channels. Painful to watch > sometimes, yes; but they are working through it. I have a chat line open > to them. > > On Tue, Feb 3, 2015 at 12:35 PM, David Roberson <dlrober...@aol.com> > wrote: > >> The guys performing the test are being tricked by the phase shift >> between the current and the supply voltage. A triac controller will cause >> that to happen. Can someone contact them directly and let them know that >> this may be the hangup. It is painful to watch them chasing this problem. >> >> I can not get in touch with them directly. Thanks. >> >> Dave >> >> -----Original Message----- >> From: a.ashfield <a.ashfi...@verizon.net> >> To: Vortex-l <Vortex-l@eskimo.com> >> Sent: Tue, Feb 3, 2015 11:55 am >> Subject: [Vo]:MFMP testing schedule >> >> MFMP have laid out their schedule for testing the Rossi style high >> temperature E-Cat. >> >> *DogBone Week, Live Now* >> >> http://www.quantumheat.org/index.php/en/home/mfmp-blog/446-dogbone-week-live-now >> Adrian Ashfield >> > >
