American Power Conversion InfraStruXureTM System instruction

4.Set the UPS System Enable switch to the OFF position.

5. Set the Battery Enclosure DC Disconnect circuit breaker to the OFF position.

Verify proper voltage and phase rotation on the PDU

1. Close (turn ON) the Q1 circuit breaker on the InfraStruXure PDU to apply power to the UPS.

2.Ensure A-B-C clockwise rotation at the UPS input bus bars, using a phase rotation meter.

3.Verify proper voltage is present at the UPS input bus bars (208V, metered phase-to-phase), using a true RMS voltmeter.

4.Ensure A-B-C clockwise rotation at the top of the PDU bypass switch, using a phase rotation meter.

5.Verify proper voltage is present at the top of the PDU bypass switch (208V, metered phase-to- phase), using a true RMS voltmeter.

The voltage for the bypass feed can only be 208V, phase-to-phase.

Warning

56	InfraStruXure System—Installation and Start-Up