Huawei S7700 Hardware Description page 49

S7700 Smart Routing Switch
Hardware Description
Figure 3-6 Appearance of a 1600 W DC power supply
Figure 3-7
Figure 3-7 Panel of a 1600 W DC power supply
NEG(-) RTN(+)
1. NEG
4. Handle
The indicators of the power supplies are shown on the panel through the light pipe.
describes the indicators on a 1600 W DC power supply panel.
Table 3-1 Indicators on a 1600 W DC power supply
Indicator
ALM
Issue 02 (2012-09-10)
shows the panel of a 1600 W DC power supply.
1
NEG(-) RTN(+)
ON
ON
3
40
O
OFF
OFF
INPUT
INPUT
O
ALM
ALM
O
2. RTN
5. Indicator
Color
Red
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2
4
5
Description
If the indicator is on, the protection circuit fails.
If the indicator is off, the protection circuit is working
properly.
3 Power Supply
3. Switch
Table 3-1
38