Huawei AR1200 Series - Page 46

Functions
The PWR350A uses 90 V AC-290 V AC input power, and provides 12 V/350 W output power.
The PWR350A has a fan. Table 3-5 describes the protection functions of the PWR350A.
Table 3-5 Protection functions of the PWR350A
Item Minimu
m Value
Typical
Value
Maximu
m Value
Remarks
Input
protectio
n
Input
undervolta
ge
protection
- - 75 V Input voltage can be
restored to the normal
range automatically, and
hysteresis is 5 V or less.
Input
overvoltag
e
305 V - 325 V Input voltage can be
restored to the normal
range automatically, and
hysteresis is 5 V or less.
Input
overcurren
t protection
- - - The AC input power lines
(L and N) have fuses.
Output
protectio
n
Output
overvoltag
e
protection
14 V - 16 V -
Output
overcurren
t protection
120% x
29.2 A
- 150% x
29.2 A
-
Output
short-
circuit
protection
- - - Output short-circuit can be
recovered automatically.
Overheating protection 75°C
(167°F)
- - When temperature exceeds
the upper limit, the power
supply unit automatically
shuts down to avoid
permanent damage. When
temperature is restored to
the normal range, the
power supply unit restarts
automatically.
Appearance
Figure 3-9 shows the appearance of the PWR350A.
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.
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