Dc Power Supply; Appearance - Huawei S9300 Hardware Description

Quidway S9300 Terabit Routing Switch
Hardware Description
Figure 3-5 Principle of the AC power supplies on the S9300
Backplane
AC
L: live wire

3.2 DC Power Supply

This section describes the panel, functions, and technical specifications of the DC power supply
on the S9300.

3.2.1 Appearance

The S9300 supports the DC power supplies working in 1+1 backup mode.
The power supplies are installed at the bottom of the chassis and are used for power input and
power distribution.
The -48 V or -60 V DC power supply adopts the standard structure.
appearance of a DC power supply of the S9300.
Issue 02 (2012-04-30)
Board 1
-48VA
RTNA
PWR1
L
N PGND
L N
AC
N: neutral wire
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Board 2
-48VA -48VB
RTNA
PWR2 PWR3
PGND L N PGND
AC
Board n
-48VB
RTNB
PWR4
L N PGND
AC
PWR1-PWR2 -48VA
PWR3-PWR4 -48VB
PWR1-PWR2 RTNA
PWR3-PWR4 RTNB
PGND: PGND wire
Figure 3-6
3 Power Supply
RTNB
shows the
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