Typical application in power conditioner:

A. Isolation transformer(Delta/Wye) connected at input terminal:
1. If there is serious 3 rd harmonic and distortion in main supply, these disturbances can be reduced.
2. By Delta/Wye connection, producing new neutral line in output. Then prevent normal operation from poor condition of mains neutral.
3. The current wave distortion as 3 rd harmonic by non-linear load is isolated and without contaminating main supply.

B. Isolation transformer Wye/Delta connection at output terminal:
1. Current wave distortion by non-linear load is isolated and reduced. The contamination to main supply and stabilizer can be reduced and improved.
2. The current wave distortion effects the correction of output voltage sampling. But the signal at the primary of isolation transformer reflects the regular wave and the power conditioner may operate exactly.
3. If there is unbalance load, the power conditioner can run regularly