system input power requirements, see PDU plugs, circuit breakers, and
receptacles on page 82.
Table 17 Electric power requirements
Phase Voltage Frequency
AC, single phase
2 wire + ground
200 V -8% min 240 V +6% max 50 ±3 Hz
60 ±2 Hz
AC, three phase delta 208 V
+5/-15%
50/60 Hz
Grounding
The site and site equipment must meet the following grounding
requirements.
• An insulated grounding conductor that is identical in size and insulation
material and thickness to the grounded and ungrounded branch-circuit
supply conductors. It must be green, with or without yellow stripes, and
must be installed as a part of the branch circuit that supplies the unit or
system.
• The grounding conductor described above should be connected to earth
ground at the service equipment or other acceptable building earth
ground. For a high rise steel-frame structure, this can be the steel frame
• The receptacles in the vicinity of the unit or system must include a ground
connection. The grounding conductors serving these receptacles must be
connected to earth ground at the service equipment or other acceptable
building earth ground.
Power connection
The AC power input for the storage system has a duplex PDU structure that
allows the rack-installed equipment to remain powered on if power is
removed from one of the two power distribution panels.
For more information, see
Electrical specifications on page 127.
Note: Site power can be connected to the PDUs at either the top or bottom
of the racks.
PDU plugs, circuit breakers, and receptacles
The PDU plugs must be appropriate for the power sources at the installation
sites. The table below lists the plugs on the end of the PDU power cords. The
power distribution panel at the installation site must have receptacles that
match these plugs.
Required number of plugs in each PDU per chassis:
82 Site preparation
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
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