Huawei Quidway S9300

Figure 3-5 Principle of the AC power supplies on the S9300
Board 1
Board 2
Board n
AC
PWR1
N PGND
Backplane
AC AC AC
PWR1-PWR2 -48VA
PWR3-PWR4 -48VB
PWR1-PWR2 RTNA
PWR3-PWR4 RTNB
PWR2
PWR3 PWR4
-48VA -48VA -48VB -48VB
L
N PGNDL N PGNDL N PGNDL
RTNA RTNA RTNB RTNB
L: live wire N: neutral wire PGND: protection grounding cable
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
3.2.2 Panel
3.2.3 Function Overview
3.2.4 Technical Specifications
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. Figure 3-6 shows the
appearance of a DC power supply of the S9300.
3 Power Supply
Quidway S9300 Terabit Routing Switch
Hardware Description
3-8 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 01 (2010-12-15)