Power Supply - Huawei Quidway S8500 Series Installation Manual

Installation Manual
Quidway S8500 Series Routing Switches
I. Functions
The backplane mainly functions in
Providing communication channels for signal exchange between boards
Providing support for hot-swapping of boards
Auto-identifying the slots
Connecting PSUs, achieving distributed power supply for SRPU modules, LPU
modules and PSUs and providing corresponding control channels.
II. Structure
For S8505
It uses a passive backplane, which provides five LPU slots and two SRP slots, one port
for fan tray and two –48V ports (one for system power input and one for PoE entry).
For S8508
It uses a passive backplane, which provides eight LPU slots and two SRP slots, one
port for fan tray and two –48V ports (one for system power input and one for PoE
entry).
For S8512
It uses a passive backplane, which provides 12 LPU slots and two SRP slots, one port
for fan tray and two –48V ports (one for system power input and one for PoE entry).

1.2.3 Power Supply

Note:
The S8500 series can be AC-powered or DC-powered. You can choose power
supply modules as needed.
If you want to change power supply type, just insert the power supply module of right
type.
Power supply modules of the S8500 series are hot-swappable.
The S8500 series can be AC-powered or DC-powered. The power supply is at the
bottom of the chassis, with a height of 3U. You can insert both AC and DC power supply
modules in the same slot based on your needs. The power frame is in different
compartment from the functional board frame and connected to the latter with cables,
which are routed on the chassis back. The power supply is cooled by built-in fans of the
PSU, which draw air into the chassis from the front and exhaust out of the back.
I. Power supply specifications
AC-input PSU
Huawei Technologies Proprietary
1-6
Chapter 1 Product Overview