Power Line Transients; Maximum Peak Inrush Specifications; Crest Factor Specifications - HP StorageWorks XP12000 - Disk Array Site Preparation Manual

You are responsible for having the correct plugs and receptacles installed by an electrician in
compliance with local electrical requirements and practices. See
49 for specific plug and receptacle part numbers and ordering information.
CAUTION:
When installing the receptacles, the electrician must ensure that each receptacle has its own neutral (if
required) and ground. Using the same neutral/ground for more than one circuit causes voltage loss and
heat problems and can create a fire hazard. A shared neutral conductor that fails open-circuit can cause
overvoltage damage to equipment.

Power line transients

Heavy electrical loads from nearby machinery or equipment (for example, elevators or electric welders)
can cause intermittent system problems with sophisticated electronic equipment, even if that equipment
is on a separate circuit breaker. When faced with these conditions, provide a separate, completely
independent power panel with an isolated ground and circuit breaker coming directly from the main
building power source or secondary power source.
If necessary, an HP representative can measure your power line noise level and make appropriate
recommendations concerning the use of line treatment devices.

Maximum peak inrush specifications

Table 19 Maximum peak inrush specifications
Cabinet
DKC
DKU
50-amp power configurations are single-phase only.

Crest factor specifications

Table 20 Crest factor specifications
Cabinet
DKC
DKU
50-amp power configurations are single-phase only.
Power
30-amp
50-amp
30-amp
50-amp
Power
30-amp
50-amp
30-amp
50-amp
"Electrical
Single-phase
46 A
60 A
34 A
56 A
Single-phase
1.68
1.56
1.65
1.50
XP12000 Disk Array Site Preparation Guide
specifications" on page
Three-phase
34 A
Not applicable
26 A
Not applicable
Three-phase
1.67
Not applicable
1.53
Not applicable
45