Power distribution unit VMAX 450F, VMAX 850F, VMAX
950F
The VMAX 450F, VMAX 850F, VMAX 950F arrays are powered by two redundant
power distribution units (PDUs), one PDU for each power zone.
Both PDUs are mechanically connected together, including mounting brackets, to
create a single 2U structure, as shown in the following figures. The PDUs are
integrated to support AC-line input connectivity and provide outlets for every
component in the bay.
The PDU is available in three wiring configurations that include:
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Single-phase
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Three-phase Delta
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Three-phase Wye
Note
The PDU AC power cords (single-phase and three-phase) extend 74" (188cm) from
the PDU chassis and are designed to reach to the bay floor egress for connection to
the customer power supply. 15' (4.57m) extension cables are provided.
Each PDU provides the following components:
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A total of 24 power outlets for field replaceable units (FRUs). The outlets are
divided into six banks with each bank consisting of four IEC 60320 C13 individual
AC outlets.
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Each bank of outlets is connected to individual branch circuits that are protected
by a single two pole 20 Amp circuit breaker.
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Depending on which PDU option selected there is a different input connector for
each PDU.
If the customer requires power to be supplied from overhead, EMC recommends
replacing the rear top cover of the bay with the ceiling routing top cover, described in
on page 106, which allows the power cables inside the machine
to be routed out through the top.
A second option is to "drop" the power cables down the hinge side, to the bottom, and
route them inside the machine. The cables should be dressed to allow all doors to open
freely and space should be provisioned accordingly to accommodate an adjacent
cabinet.
Power cabling, cords and connectors
62
Site Planning Guide
VMAX 250F, VMAX 450F, VMAX 850F, VMAX 950F with HYPERMAX OS
