Cisco ASR1002 Installation Manual page 38

Cisco ASR 1002 Router Power Supplies
Turn the branch source breaker on.
Step 8
Place the –48 VDC Standby switch in the On (|) position. The power supply LEDs light when power is
Step 9
supplied to the router.
You have completed the procedure for connecting a –48 VDC power supply in the Cisco ASR 1002
Router.
Connecting Cisco +24 VDC Power Supply
The +24 VDC power supply uses a spring-loaded terminal block. The input terminal block requires
8 AWG multi-strand wiring to support input current. Features are provide for strain relieving the input
wires from the terminal block on the front panel. The recommended branch circuit breaker for the Cisco
ASR 1002 Router +24 VDC power supply is a 40 A UL listed circuit breaker.
Before you begin, read these important notices about the +24 VDC power supply:
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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
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The labeling displays +27 VDC INPUT. This labeling describes the nominal voltage provided at a
cell site.
Observe the polarity location—Unlike the polarity labels of the –48 VDC power supply (ground,
positive, negative), the polarity labels on the +24 VDC are ground, negative, positive as shown in
Figure 8-28 from right to left as they appear on the actual power supply unit.
The ground (GND) lead is always installed first and removed last.
The +24 VDC power supply uses a spring loaded terminal block; therefore have the recommended
screwdriver size available.
Review the diagrams to see how the wire is stripped and how the screwdriver is inserted at an angle
into the terminal block.
Have the following equipment available to install and remove the +24 VDC power supply:
Phoenix Contact 3.5mm flat-blade screwdriver or equivalent
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Wire-stripping tool for stripping 8-gauge wire
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Chapter 8 Cisco ASR 1002 Router Overview and Installation
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