Dc Power Supply System - Huawei USG9500 Series Hardware Manual

HUAWEI USG9500 Series
Hardware Guide

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.
Table 1-15 Power supply solution of the USG9560 DC power system
DC Power
Module
PEM-A1
PEM-B1
PEM-A2
PEM-B2
NOTE
Figure 1-21
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
DCa
DCb
Figure 1-22
Issue 03 (2017-12-15)
Figure 1-21 describes the power supply solution.
Powered Area
Zone1
Zone2
PEMs A and B back up each other.
shows the relationships between the power modules and chassis parts. Each DC
Rear view
zone2 zone2 zone2
zone1 zone1 zone1
PEM PEM PEM
NEG(-) RTN(+) NEG(-) RTN(+) NEG(-)
A1 A2 B1
RUN ALM RUN ALM RUN
ON ON ON
OFF OFF OFF
-48~-60V;8.60A -48~-60V;8.60A -48~-60V;8.60A
shows the PEM.
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Powered Part
l Front panel: slots 5-8, 10
l Rear panel: fan modules (upper left side)
l Front panel: slots 1-4, 9, 11
l Rear panel: fan modules (upper right side)
zone2 zone2 zone2
PEM
RTN(+) NEG(-) RTN(+)
B2
ALM RUN ALM
ON
OFF
-48~-60V;8.60A
1 Hardware Overview
Front view
zone1 zone1 zone1
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