Since they have their own transformer anyway, does this mean I didnt really need to use the isolation transformer at all.If as in the diagram if it is Delta - Wye is there anything to worry about.If you were backfeeding a WYE winding, with your center tapped DELTA supply (wild leg), you would not connect anything to the X0 (center) terminal, it would be left floating.The worst thing about backfeeding this unit, would be grounding of the Delta output.
Your choices would be to corner ground it, or leave it ungrounded. Its a great choice for HV RPC input side outputing to a LV load side. Wound Delta-WYE, so it re-derives a Neutral yah can Earth at the frame of the load for a local Neutral and then NOT have more than 120 VAC above ground, any leg to ground. I use an EGS-Hevi-Duty Delta-Wye at near-as-dammit one to one for that very purpose, 230-230 nominal, not 208, neither Voltage boost nor drop. Rotary 3 Phase Converter Wiring Diagram Plus All LegsGives me isolation and that less lethal limitation of 130-odd above Earth, plus all legs the same, not one of them higher. Your one would NOT even be on my menu for back feed, putting Delta into the Wye Windings to get Delta out. Just that Id go and get a different transformer. As I did. RPC are inherently Delta and NOT Wye, so yah either want a Delta-Delta or a Delta-Wye. Got a 15 KVA 2:1 Delta-Delta Id be happy to be rid off, but its an Eliptical Coil Uptegraf, waaay too heavy to affordably ship, least of all clear to Canada. Quote: If you were backfeeding a WYE winding, with your center tapped DELTA supply (wild leg), you would not connect anything to the X0 (center) terminal, it would be left floating. CEMF off the one powered phase, motor literally idle as to local shaft load, couples back, phasing now dependent on the physical arrangement of the windings and where their fields have rotated to. Three of them, no longer just one. Of course. Thats why we call it rotary as well as phase converter. Thats part of the process that shifts the single input phase into three phases at the output. Pushed sort of sideways in time away from the grids phase position. So their Neutrals no longer agree with the Utility mains Neutral, either. Best to just NOT. Use a 2XX primary control instead, and place it across any two legs BUT the generated leg. ![]() Rotary 3 Phase Converter Wiring Diagram Download Their ManualRotary 3 Phase Converter Wiring Diagram Manual And ReadDownload their manual and read the part as to what is required for use with a transformer. Delta Wye. No carry-through of utility mains Neutral, and the new Neutral yah derive off the Wyes common is not meant to be commoned-up to the Split-Phase Utility mains Neutral, either. Wondering if anyone can confirm the proper procedure on how you connect the WYE center point on the secondary of an isolation transformer used with a phase converter. This is connected to ground to eliminate the high leg problem right Is ground wire ok or should there be a separate neutral wire all the way to single phase panel Or something else I bought my phase converter used, it came with an isolation transformer and I had an electrician friend hook it up. Its been working fine for 3-4 years but he was a little uncertain about this part, and im not sure X0 is hooked up properly or even if its connected to anything at all. Also both my CNCs have their own transformer for highlow voltage.
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