Minimum 4 AWG multiple strand, high-flex cable is recommended for final connections from the PDP
to the PFUs. Although the chassis configuration may not draw maximum power, it should be sized and
wired to handle 12.8 kW of power to accommodate future expansion. See
on page 81
.
Important
Each feed connects to supply and return terminals on the rear of the PFUs using two-hole lugs crimped to the
end of each cable. The feed cables are routed through openings in each side of the chassis. The input terminals
are wired through EMI filters to the ASR 5500 backplane.
For a non-redundant chassis power configuration, live power feeds must be connected to all four power inputs
on PFU-A. For a redundant power configuration, live power feeds must be connected to all four power inputs
on PFU-B. The four power feeds per PFU assure that all power planes in the backplane are energized; power
is available to all card slots in the chassis. For additional information, see
Internal Power Planes, on page 78
.
The circuit breakers at the power distribution panel must disconnect the supply line of each -48VDC feed.
However, it is recommended that the circuit breakers at the power distribution panel simultaneously disconnect
both poles (supply and return) for each -48 VDC feed to completely isolate the ASR 5500 from the power
source.
To maintain power redundancy, separate
–
48 VDC supply circuits should be used to feed each DC power
input on both PFUs.
Set the circuit breakers on the distribution panel to the OFF position before making the power connections
at the PFUs.
Caution
Each power input cable must be terminated with a supplied Panduit LCD4-14AF-L 2-hole, 90-degree lug
using the appropriate crimping tool and die.
The following alternate lug types (not supplied with the chassis) are also approved for use on the power feeds:
•
Panduit LCC4-14AF-L, 4 AWG, 2-hole, 90-degree long barrel lug
•
Burndy YAZ2C2TC1490, 2 AWG, 2-hole, 90-degree long barrel lug
If a DC power input should fail, the operating supply circuits continue to power the ASR 5500.
Internal Power Planes
Four inputs are labeled A1 through A4 and the other inputs are labeled B1 through B4. A1 is redundant for
B1 and so on. The inputs correspond to the four power planes that supply power to various chassis components
as shown in the table and figure below.
The SSC monitors all eight feeds for outages.
All four power inputs on a PFU must be connected to live power feeds to assure that all card slots in the
ASR 5500 chassis are energized.
Important
ASR 5500 Installation Guide
78
Power Cabling
Internal Power Planes
Summary of Contents for ASR 5500
Page 12: ...ASR 5500 Installation Guide xii Contents ...
Page 16: ...ASR 5500 Installation Guide xvi About this Guide Contacting Customer Support ...
Page 40: ...ASR 5500 Installation Guide 24 Technical Specifications Chassis Grounding ...
Page 74: ...ASR 5500 Installation Guide 58 Card Installation Save Shipping Cartons ...
Page 88: ...ASR 5500 Installation Guide 72 MIO Port Cabling Cleaning Fiber Optic Connectors ...
Page 112: ...ASR 5500 Installation Guide 96 System Power up show leds Command ...
Page 130: ...ASR 5500 Installation Guide 114 Initial System Configuration Additional Configuration Tasks ...
Page 164: ...ASR 5500 Installation Guide 148 Replaceable Components Returning Failed Components ...
Page 186: ...ASR 5500 Installation Guide 170 Console Port to Cisco Server Cabling Configuration ...
Page 192: ...ASR 5500 Installation Guide 176 RMA Shipping Procedures Rear Cards ...
