pdu2InputPhaseVoltageMeasType 1.3.6.1.4.1.232.165.7.2.2.1.2

Value indicates what input voltage is being measured in this table row - single phase voltage, phase 1 to neutral, phase 2 to neutral, phase 3 to neutral, phase 1 to phase 2, phase 2 to phase 3, or phase 3 to phase 1.