
Installation Manual
H3C S7502 Ethernet Switch
Chapter 1 Product Overview
1-30
Figure 1-30
Appearance of an external PoE power supply
Note:
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The S7502 supports a PoE power supply with up to 1500 W power output. A single
PoE module can provide 1250 W power output, and two can provide up to 2400 W
power output in the case that PSE2500-A3 supplies 100 VAC to 140 VAC input
voltage. Three PoE modules are required to provide output power of 2400 W if
power supply redundancy is desired. With 200 VAC to 240VAC input voltage, a
single PoE module can provide 2500 W power output. Two PoE modules are
required to provide 2500 W power output if power supply redundancy is desired.
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There are S7502 PoE chassis and non-PoE chassis. If the PoE function is required,
select an S7502 PoE chassis.
1.11.6 Fan Tray
The fan tray is on the right side of an S7502 chassis, and directly connected to the
backplane through a connector. The fan fault signals are summarized and transmitted
from the backplane to the SRPU for further processing. The fan tray is hot-swappable.
Figure 1-31
Fan tray on an S7502