Service manual

Start-Up Procedure
64 InfraStruXure System – Service Manual – Installation and Start-Up 990-1467C
Close Cross-Tie
1. If applicable, ensure A-B-C clockwise rotation at the bottom of the PDU cross tie output circuit
breaker, using a phase rotation meter.
2. If applicable, verify that there is NO voltage present across the PDU cross tie circuit breaker, and
that proper voltage is present on each side of the circuit breaker (208V, metered phase-to-phase),
using a true RMS voltmeter.
Warning: There should be no voltage present across the Cross Tie Output circuit
breaker.
3. If applicable, set the PDU Cross-Tie Output (X) circuit breaker to ON.
Once the cross-tie output circuit breaker is closed, you can start the system to which the circuit breaker is
tied. Repeat this start-up procedure for each InfraStruXure system.