The input voltage orientation:
1: unknown for this UPS
2: singlePhase - phase 1 voltage is between Phase 1
and Neutral.
3: splitPhase - phase 1 voltage is between Phase 1 and
Neutral; phase 2 voltage is between Phase 2 and Neutral;
phase 3 voltage is between Phase 1 and Phase 2.
4: threePhasePhaseToNeutral - phase 1 voltage is between
Phase 1 and Neutral; phase 2 voltage is between Phase 2
and Neutral; phase 3 voltage is between Phase 3 and
Neutral.
5: threePhasePhaseToPhase - phase 1 voltage is between
Phase 1 and Phase 2; phase 2 voltage is between Phase 2
and Phase 3; phase 3 voltage is between Phase 3 and
Phase 1.