Dc Power Supply System - Huawei Eudemon8000E Series Manual

HUAWEI Eudemon8000E Firewall
Hardware Description
Indicator
ALM
Table 3-6
Table 3-6 Technical parameters of the DC PEM
Item
Type
Dimensions (Width x Depth x
Height)
Weight
Number of power inputs
Input voltage range
Input rated voltage
Maximum input current
Output voltage
Output current
Rated current of the air-break 70 A (Each PEM corresponds to an air switch).

3.6.2 DC Power Supply System

This section describes the architecture of the DC power supply system.
The E8000E-X8 has a DC power supply system, four 70 A PEMs work in 2+2 backup mode.
Figure 3-6
Two -48 V power inputs are joined on the board.
After the low-frequency filtering, the two -48 V power inputs for fans. Two separated RTN
inputs are joined on the board inside the fan module.
Issue 01 (2012-11-07)
Color
Red
lists the technical parameters of the PEM.
shows details of the DC power supply system.
NOTE
In Figure 3-6, each DC power input contains one -48 V power input and one RTN input. Two separated
RTN inputs are joined on the board.
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Copyright © Huawei Technologies Co., Ltd.
Description
Power failure indicator. If the indicator is steady on, it
indicates the following:
l The lightning protection link of the power module has
failed.
l The power modules does not have input power.
Technical Parameter
PEMB
58 mm x 115 mm x 220 mm
1.1 kg
1
-72 V DC to -38 V DC
-48 V/-60 V
70 A
-72 V DC to -38 V DC
70 A
3 E8000E-X8 Chassis Overview
45