1.2.4.2 DC Power Supply System
This section describes the power supply architecture of the DC power system and the
appearance and technical specifications of the DC power modules of the USG9560.
The USG9560 uses four 70 A PEM modules that work in 2+2 backup mode for DC power
supply.
describes the power supply solution.
Table 1-15
Power supply solution of the USG9560 DC power system
DC Power
Module
Powered Area
Powered Part
PEM-A1
PEM-B1
Zone1
l
Front panel: slots 5-8, 10
l
Rear panel: fan modules (upper left side)
PEM-A2
PEM-B2
Zone2
l
Front panel: slots 1-4, 9, 11
l
Rear panel: fan modules (upper right side)
NOTE
PEMs A and B back up each other.
shows the relationships between the power modules and chassis parts. Each DC
power input contains one -48 V power input and one RTN input. Two separate RTN inputs
join together on the board.
Figure 1-21
Power supply architecture of the USG9560 DC power system
Rear view
Front view
RUN
ON
OFF
ALM
NEG(-)
RTN(+)
PEM
-48~-60V;8.60A
RUN
ON
OFF
ALM
NEG(-)
RTN(+)
PEM
-48~-60V;8.60A
RUN
ON
OFF
ALM
NEG(-)
RTN(+)
PEM
-48~-60V;8.60A
RUN
ON
OFF
ALM
NEG(-)
RTN(+)
PEM
-48~-60V;8.60A
zone1
zone1
zone1
zone2
zone2
zone2
zone1
zone1
zone1
zone2
zone2
zone2
A1
B2
B1
A2
DCa
DCb
HUAWEI USG9500 Series
Hardware Guide
1 Hardware Overview
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
38