Cisco WS-C3550-24-FX-SMI - Catalyst 3550 100BASE-FX Switch Przewodnik Instalacji Strona 76

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Chapter 2 Installing and Starting the Switch
Connecting to DC Power
2-30
Catalyst 3550 Multilayer Switch Hardware Installation Guide
78-11358-03
Step 2 Identify the positive and negative feed positions for the terminal block
connection. The wiring sequence is positive to positive and negative to negative
for both the A and the B feed wires. The switch rear panel identifies the positive
and negative positions for both the A and B feed wires, as shown in Figure 2-28.
Figure 2-28 Positive and Negative Positions on the Switch Rear Panel
Step 3
Using a 18-gauge wire-stripping tool, strip each of the four wires coming from the
DC-input power source to 0.27 inch (6.6 mm) ± 0.02 inch (0.5 mm), as shown in
Figure 2-29. Do not strip more than 0.29 inch (7.4 mm) of insulation from the
wire. Stripping more than the recommended amount of wire can leave exposed
wire from the terminal block plug after installation.
Figure 2-29 Stripping the DC-Input Power Source Wire
Step 4
Insert the exposed wire of one of the four DC-input power source wires into the
terminal block plug, as shown in Figure 2-30. Make sure that you cannot see any
wire lead. Only wire with insulation should extend from the terminal block.
Warning
An exposed wire lead from a DC-input power source can conduct harmful levels
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the terminal block plug.
70151
INPUT 36 - 72 V
CURRENT: 2 - 1A
A
B
0.27 inch (6.6 mm)
±
0.02 inch (0.5 mm)
60531
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