Power distribution unit VMAX 450F, VMAX 850F, VMAX950FThe VMAX 450F, VMAX 850F, VMAX 950F arrays are powered by two redundantpower distribution units (PDUs), one PDU for each power zone.Both PDUs are mechanically connected together, including mounting brackets, tocreate a single 2U structure, as shown in the following figures. The PDUs areintegrated to support AC-line input connectivity and provide outlets for everycomponent in the bay.The PDU is available in three wiring configurations that include:l Single-phasel Three-phase Deltal Three-phase WyeNoteThe PDU AC power cords (single-phase and three-phase) extend 74" (188cm) fromthe PDU chassis and are designed to reach to the bay floor egress for connection tothe customer power supply. 15' (4.57m) extension cables are provided.Each PDU provides the following components:l A total of 24 power outlets for field replaceable units (FRUs). The outlets aredivided into six banks with each bank consisting of four IEC 60320 C13 individualAC outlets.l Each bank of outlets is connected to individual branch circuits that are protectedby a single two pole 20 Amp circuit breaker.l Depending on which PDU option selected there is a different input connector foreach PDU.If the customer requires power to be supplied from overhead, EMC recommendsreplacing the rear top cover of the bay with the ceiling routing top cover, described inOverhead routing kit on page 106, which allows the power cables inside the machineto be routed out through the top.A second option is to "drop" the power cables down the hinge side, to the bottom, androute them inside the machine. The cables should be dressed to allow all doors to openfreely and space should be provisioned accordingly to accommodate an adjacentcabinet.Power cabling, cords and connectors62 Site Planning Guide VMAX 250F, VMAX 450F, VMAX 850F, VMAX 950F with HYPERMAX OS
