I thought (based a previous thread) that we needed to be concerned with VA output of inverters, not wattage, at least on the transformer based machines like the SW. I realize this wouldn't be an actual load if on grid. In these situations, I just measure DC amps into the inverter to determine the actual consumption, irregardless of power factor, AC efficiency, etc.
R. Walters r...@solarray.com Solar Engineer On Jul 25, 2011, at 9:29 AM, Exeltech wrote: > Measuring current without the phase relationship between the current and > voltage > isn't indicative of the actual power consumed. Likely what you were seeing > is the > eddy current in the transformer core. If so, it's 90 degrees out of phase > with the > voltage, and the real wattage consumed with no load connected is minimal. > > Dan > Sr. Engineer > Exeltech > > > --- On Mon, 7/25/11, Mark Frye <ma...@berkeleysolar.com> wrote: > > From
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