Hi John,
The supply voltage for the rotary phase converter is usually 240V_rms from my multimeter. There are several voltage sets coming out of the phase converter. If no load is on the converter the voltages are ~ 236V_rms(measured from legs 1 and 2), 242V_rms(measured from legs 2 and 3), 251V_rms(measured from legs 1 and 3). There is a considerable amount of phase imbalance here, so I have the supply voltage pass through a line reactor rated for 82.5 FLA I believe. When the supply passes through the line reactor, the voltage is determined in part by the impedance of the load. Since both washing machines have motors in them with 2 main winding sets, to which the windings sets have different resistances and impedances, the voltage across the line reactor when under load will vary depending on what device is operating. The 440V nameplate motor is used to maintain a constant load on the line reactor , thus keeping the phase imbalance lower, and the voltage more stable. So When the Primus is in wash mode the voltages are 232V_rms(measured from legs 1 and 2), 236V_rms(measured from legs 2 and 3), 230V_rms(measured from legs 1 and 3). When in extract the voltages are 228V_rms(measured from legs 1 and 2),232V_rms(measured from legs 2 and 3), 229V_rms(measured from legs 1 and 3). I don't remember off the top of my head what the voltages are when the Ipso runs->I'll get back to you on that.
I wish the supply voltage was 208, as these two machines run a little better on it. I suppose, if I put another line reactor in series with the present one, I could achieve the 208V.
toploader55:
Sorry I missed your post. The phase converter is noisy because the idler motor has end bells to which the races that hold the bearings have been worn out. The result is a loose armature and shaft, which makes for extra vibration and noise. Since the motor does not have a mechanical load on it, it works for now. I will replace it eventually, new motors aren't cheap anymore. When running the Ipso, I think the fan causes it to be louder than the converter.