Connecting The Power Converter To A Dc Power Source - Cisco Catalyst 2955 Hardware Installation Manual

Chapter 3 Installation
Connecting the Switch to the Power Converter

Connecting the Power Converter to a DC Power Source

You can also connect the power converter to a DC power source. The power
converter derates the power source voltage to provide 24 VDC to the switch.
To power on the switch, the input voltage to the power converter must be at least
Note
95 VDC. To ensure proper operation after the Catalyst 2955 switch has powered
on, the input voltage to the power converter cannot drop below 80 VDC.
To guarantee 24 VDC at 2.5 A to the Catalyst 2955 switch, the input power to the
power converter must remain between 160 and 375 VDC.
Figure 3-19 shows a basic wiring diagram for connecting a power converter to a
DC power source.
Catalyst 2955 Hardware Installation Guide
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