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Start-Up Procedure: InfraStruXure System
56 InfraStruXure System—Installation and Start-Up
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.
4. Set the UPS System Enable switch to the
OFF position.
5. Set the Battery Enclosure DC Disconnect
circuit breaker to the OFF position.
Warning
The voltage for the bypass feed can only be 208V, phase-to-phase.