(3) Powering mode
l D (Direct): direct current
Functions
The PWR350D provides +12 V DC power. It has the following functions:
l EMC filtering, surge protection, and short circuit protection.
l Various alarms, for example, the alarm triggered when there is no power input, the alarm
for the air breaker status, the alarm for ineffective surge protection, and the alarm for
undervoltage input.
Appearance
Figure 3-11 shows the appearance of the PWR350D.
Figure 3-11 Appearance of the PWR350D
1. Handle
2. Switch 3. Indicator 4. DC jack
Table 3-8 describes the meanings of the PWR350D indicators.
Table 3-8 Description of the PWR350D indicators
Name
Status Description
STATUS Off
l The input power is out of range, for example, no DC
input power, DC input overvoltage, and DC input
undervoltage.
l The output power is out of range, for example,
undervoltage or overtemperature occurs.
Green The DC input power is within range.
Blinking green The output power is out of range, for example,
overvoltage, overcurrent, and short circuit occurs.
Huawei AR1200&2200&3200 Series Enterprise Routers
Hardware Description 3 Power Supply Units
Issue 03 (2012-04-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
42
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