Power Supply Principle - Huawei S9300 Hardware Description

Quidway S9300 Terabit Routing Switch
Hardware Description
S9303
The power supplies are located in the PWR1 to PWR2 slots of the S9303. The DC power supplies
and AC power supplies are supported. PWR1 is in area A, and PWR2 is in area B. Area A and
area B work in backup mode, as shown in
Figure 3-3 Configuration of the S9303 power supplies
The maximum power consumption of the S9303 is 350 W. You can use DC power supplies or
AC power supplies on the S9303.
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Only one PoE power supply unit can be installed on an S9303. The PoE power supply units
include:
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3.1.2 Power Supply Principle

Figure 3-4
principle of the AC power supplies.
Issue 02 (2012-04-30)
LPU
MCU
PW R1
电源模块
Master PWR Slave PWR
DC power supplies, 1+1 configuration
Each power supply is configured in active area A and standby area B. The two power
supplies work in backup mode, as shown in
Configuration of the S9303 AC power supplies
– 1+1 configuration, 220 V AC power supplies (800 W)
The maximum power consumption is 800 W. Each AC power supply is configured in
active area A and standby area B, as shown in
– 1+1 configuration, 110 V AC power supplies (400 W)
Two 110 V AC power supplies provide power of 400 W. The total power consumption
of the S9303 is less than 400 W; therefore, the S9303 can use two 110 V AC power
supplies in backup mode, as shown in
800 W power supply unit
2200 W power supply unit
NOTE
The 2200 W power supply unit only provides PoE power, but does not provide power for the entire device.
When the input voltage for an S9303 is 110 V, confirm with Huawei technical personnel to determine the
power supply configuration.
shows the principle of the DC power supplies on the S9300.
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Figure
LPU
LPU
MCU
PW R2
PoE
Figure
Figure
3-3.
3-3.
Figure 3-3.
3-3.
Figure 3-5
3 Power Supply
shows the
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