Wiring The Dc-Input Power Source - Cisco ME 3400E Hardware Installation Manual

Power-Supply Module Installation
Figure 3-14
Connect the input power as described in the
Step 5

Wiring the DC-Input Power Source

Before you wire the DC-input power source, review the warnings in this section and this information:
Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than: 
10 A Statement 1005
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. 
Warning
Statement 1022
Only trained and qualified personnel should be allowed to install or replace this equipment. 
Warning
Statement 103
Connect the unit only to a DC-power source that complies with either DC mains or Safety Extra-Low
Caution
Voltage (SELV) requirements in IEC 60950 based safety standards. Do not connect to a hazardous
voltage source.
The DC-power-supply voltage should be within the range that you select on the DC-power-supply
Caution
voltage switch, either –36 to –72 VDC or +18 to +36 VDC. If the supply voltage is not in this range, the
switch might not operate properly or might be damaged.
Cisco ME 3400E Ethernet Access Switch Hardware Installation Guide
3-12
DC-Voltage Selector
P S U O K
+ 2 4 V - 4 8
V
Chapter 3 Installing and Removing AC- and DC-Power-Supply Modules
"Wiring the DC-Input Power Source" section.
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