Open Neutral
Senior Member
- Location
- Inside the Beltway
- Occupation
- Engineer
I have 3 sync'ed 5KW inverters that put out 208/120 3ph. I need 480/277. Simple, just need a stepup transformer......But the 480 side feeds a remote Delta->Wye xfmr.
[When the inverters are not on-line, a PoCo xfmr feeds us from a wye. When Reddi Kilowatt goes on vacation, an ATS will switch from it to the inverters.]
I can't see any way around a Wye-Wye transformer, but know that brings a host of issues. Is there such a thing as Wye-Delta-Wye, or one with an aux. delta winding to control the harmonics?
[When the inverters are not on-line, a PoCo xfmr feeds us from a wye. When Reddi Kilowatt goes on vacation, an ATS will switch from it to the inverters.]
I can't see any way around a Wye-Wye transformer, but know that brings a host of issues. Is there such a thing as Wye-Delta-Wye, or one with an aux. delta winding to control the harmonics?