Just an update on this post.
First, I was initially mistaken the normal current draw for this appliance is around 16 amps not 26 as I had originally thought.
I contacted the manufacturer of the Powerwave XR7 and they said the 256V reading was not out of line for their machine. They explained...
Another update.
I just looked at this unit - it is 50 Amps in and only 20 Amps out! I think this limitation along with the resistive loads is likely what is causing these anomalies. I will report what I get when I put the unit on true 208, 3 phase power
The unit I have is a Power Wave XR7. I think it is basically a big motor and a set of capacitors.
Here are the voltage readings with no load.
Each Phase to Ground
119.5 V
122.0 V
256.0 V
Phase to Phase
1-2 224V
1-3 209V
2-3 222V
I will be moving this unit to a true 3 phase 208V system...
I have a 3 phase converter installed in our shop - it runs on a 50 amp breaker and should put out about 30 amps 3 phase.
Today I was working on a cooking appliance that has 6 45 ohm resistance elements used to heat/boil water in a tank.
I noticed a couple of things that seemed a bit strange...
I just acquired a Systron Donner HR40-10C power supply.
It seems to be working fine and I seem to have figured out how to set it up to limit both voltage and amperage.
I have searched on line and there is no manual or information about the operation of these units to be found as they are quite...
