Huawei CloudEngine 7800 Series Hardware Description page 118

CloudEngine 7800&6800&5800 Series Switches
Hardware Description
Table 3-2 Functions of the PAC-150WA
Function
Input
protection
Output
protection
Overtemperature protection
Heat dissipation
Hot swap
Panel
Figure 3-2
Issue 16 (2015-08-26)
Input
undervoltage
protection
Input overcurrent
protection
Output
overvoltage
protection
Output
overcurrent
protection
Output short-
circuit protection
NOTE
When a power module enters overtemperature protection state, take measures to lower the temperature of
the power module. The power module can automatically resume power supply when the temperature falls
within the normal range.
shows the panel of the PAC-150WA.
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Description
In this protection state, the power module stops
supplying power. When the input voltage restores to the
normal range, the power module automatically resumes
power supply.
In this protection state, the power module stops
supplying power and cannot automatically resume
power supply when the input current restores to the
normal range.
In this protection state, the power module supplies
power intermittently. When the output voltage restores
to the normal range, the power module automatically
resumes power supply.
In this protection state, the power module supplies
power intermittently. When the output current is
limited within a range, the power module automatically
resumes power supply.
In this protection state, the power module supplies
power intermittently. When the short circuit is
removed, the power module automatically resumes
power supply.
When the temperature of the power module exceeds a
specified threshold, the power module stops supplying
power. When the temperature falls into the normal
range, the power module automatically resumes power
supply.
Natural heat dissipation
Supported
3 Power Module
108