Specifications

AlphaServer 1000A Owner's Guide Hardware Installation • 2-3
Power Requirements
Your system ships with one primary power supply and the option of a second power
supply. The second power supply provides redundant power to the system. Both the
primary and secondary power supplies connect to an AC outlet. An internal cable
connecting the two power supplies is required when using the second power supply.
Voltage selection is not required. The system is intended for use at all rated AC-
input voltages. Table 2-2 lists the power supply ratings for systems using one or two
power supplies. Figure 2-2 shows the power supply requirements for a system with
one power supply.
Table 2-2 Power Supply Ratings
Specification Range
Voltage 100-120/220-240 volts AC
Frequency 50-60 Hz
Current 8.5/4.0 amperes (one power cord)
7.5/3.5 amperes (two power cords)
Note:
These ratings are the maximum with a fully loaded system enclosure and do
not include a monitor or terminal.
Figure 2-2 Power Supply Requirements (Single Power Supply)
100-120 VAC 7.5A 50-60 Hz
= Properly grounded power receptacle
220-240 VAC 3.5A 50-60 Hz
Power
Supply
Cable
Power Supply
Cable Socket
MA00937