Electrical Requirements; Line Voltage; Branch Circuit Breakers - HP StorageWorks XP512 - Disk Array Manual

Electrical Requirements

Line Voltage

Branch Circuit Breakers

Preparing for Installation
Power requirements are one of the most important considerations prior to
installing your disk array. Each disk array has two separate connections to
AC power, so the rated AC current should be doubled. In case one input
fails, the second input MUST BE CAPABLE OF SUPPORTING THE
ENTIRE CURRENT DEMAND FOR BOTH SETS OF POWER
SUPPLIES.
The line voltage (AC) at the wall power outlet is a function of the local
power utility and your building power distribution network. Voltages
outside the operating range of the disk array can cause intermittent system
errors or a complete system shutdown. If required, the HP CE along with
your electrician can determine the current line voltage and make
recommendations. Avoid the use of a line voltage conditioner.
Make sure that distribution unit supports the correct voltage to support your
entire system.
Three-Phase Branch Circuit Breakers
The power cord supplied with each DKU is sized for connection to a 30-
amp circuit. This specification per phase is based on the input power
requirements of the first DKU in the subsystem since the first DKU
supplies power to the DKC.
Single-Phase Branch Circuit Breakers
With the single-phase power option, both the DKU and the DKC are
connected to the AC main. The power cord supplied with the DKU and
each DKU is sized for connection to a 20-amp circuit.
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