Cisco 2950 Hardware Installation Guide - Page 114

Wiring the DC-Input Power Source

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Wiring the DC-Input Power Source Figure C-3 Torquing Ground-Lug Screws 36 - 72V 1 - 0.5A A B [email protected]. CONSOLE Appendix C Connecting to DC Power 65295 Torque to 15 lbf-in. Wiring the DC-Input Power Source Warning Only trained and qualified personnel should be allowed to install or replace this equipment. Statement 1030 Warning Before connecting or disconnecting ground or power wires to the chassis, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. Use a voltmeter to test for 0 (zero) voltage at the power terminals on the chassis. Statement 196 Caution You must connect the Catalyst 2950G-24-EI-DC or Catalyst 2950ST-24 LRE 997 switch only to a DC-input power source that has an input supply voltage from -36 to -72 VDC. If the supply voltage is not in this range, the switch might not operate properly or might be damaged. Caution The switch must be installed with 5-A-branch-circuit protection. Note This installation must comply with all applicable codes. Catalyst 2950 Switch Hardware Installation Guide C-4 OL-6156-01

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C-4
Catalyst 2950 Switch Hardware Installation Guide
OL-6156-01
Appendix C
Connecting to DC Power
Wiring the DC-Input Power Source
Figure C-3
Torquing Ground-Lug Screws
Wiring the DC-Input Power Source
Warning
Only trained and qualified personnel should be allowed to install or replace this equipment.
Statement 1030
Warning
Before connecting or disconnecting ground or power wires to the chassis, ensure that power is
removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel
board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch
handle of the circuit breaker in the OFF position. Use a voltmeter to test for 0 (zero) voltage at the
power terminals on the chassis.
Statement 196
Caution
You must connect the Catalyst 2950G-24-EI-DC or Catalyst 2950ST-24 LRE 997 switch only to a
DC-input power source that has an input supply voltage from
–
36 to
–
72 VDC. If the supply voltage is
not in this range, the switch might not operate properly or might be damaged.
Caution
The switch must be installed with 5-A-branch-circuit protection.
Note
This installation must comply with all applicable codes.
DC INPUT FOR REMOTE
POWER SUPPLY
SPECIFIED IN MANUAL.
+12V
@4.5A
36 - 72V
1 - 0.5A
CONSOLE
A
B
65295
Torque to 15 lbf-in.