User Information and Service Guide - HP Carrier-Grade Server cc3310

Chapter 4 31
Power Supplies
The power supply cage shown in Figure 3-3 is accessed from the rear of the chassis. The power supply cage
supports up to two hot-swap power supplies (either AC input or DC input) in a (1+1) redundant
configuration. A power supply filler module (shown in Figure 3-3) for the empty power supply site is supplied
for servers without redundancy.
Only the DC input version is NEBS certified.
Figure 3-3. Non-redundant AC-Power Supply Subsystem (Filler Module Shown)
DC Power Subsystem
This section defines the features of the DC input switching power subsystem.
Features
• 450-Watt output capability in full DC input voltage range
• Power Good indication LEDs
• Internal cooling fans with multi-speed capability
• Remote sense of 3.3-Volt, 5-Volt, and 12-Volt DC outputs
• DC_OK circuitry for brown-out protection and recovery
• Built-in load sharing capability
• Built-in overloading protection capability
• Onboard Field Replaceable Unit (FRU) information
• I
2
C interface for server management functions
• Integral handle for insertion/extraction
Introduction
The DC version of the server uses a –48 to –60 VDC input switching power subsystem, which provides up to
450 Watts with –48 to –60 VDC input and with current and remote sense regulation. The power subsystem
consists of one or two 450-Watt power supply modules. A server with two modules forms a redundant, hot-
swappable (1+1) power subsystem.