Owner`s manual

The XMI power supply is made up of three power regulators.
1
The
power supply provides sufficient power for any combination of modules (see
Table 2–2.)
Table 2–1: AC Power Controller Input Voltage
Model No. Hz
Nominal Input
Voltages Phase
H405-E 60 208 V 3
H405-F 50 380 V 3
50 416 V 3
Table 2–2: Power Supply Available
DC Voltage Available XMI Current
+5V 124.0 A
+3.3V 80.0 A
+12V 4.0 A
–12V 2.5 A
–5.2V 20.0 A
–2V 7.0 A
The optional battery backup unit (BBU), if present, is located near the
bottom of the cabinet. This unit supplies power to sustain memory for up
to 10 minutes following power interruption to system memory. The unit
also provides 1 second of ride-through capability. The BBU has its own fan,
which operates only when power is being supplied by the BBU. The system
control panel indicates the status of the battery backup unit.
1
Two additional power regulators are required if the system includes the optional VAXBI.
System Components 2–9