Item
Technical Specification
Number of power inputs
1
Maximum input voltage
range
-72 V DC to -38 V DC
Rated input voltage range -48 V DC to -60 V DC
Input current
60 A (Each power supply input with at least 60 A current is
recommended.)
Output voltage
-72 V DC to -38 V DC
Output current
60 A
Rated current of the air-
break
70 A (Each PEM is controlled by an air switch).
1.2.4.3 AC Power Supply System
This section describes the power supply architecture of the AC power system and the
appearance and technical specifications of the AC power chassis of the USG9560.
shows the power supply architecture of the USG9560 AC power supply system.
The input AC power is output as steady DC power after being converted by the AC/DC
module and being transmitted along external cables to the PEM to power all boards and fans.
Table 1-18
Power supply solution of the USG9560 AC power system
AC Power
Module
DC Power
Module
Powered
Area
Powered Part
AC power
chassis
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 AC power chassis, 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.
HUAWEI USG9500 Series
Hardware Guide
1 Hardware Overview
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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