Cisco 8540 User Guide - Page 51

DC Power Supply Specifications, Description, Specifications

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Appendix A Chassis and Power Supply Specifications Table A-1 Chassis and Power Supply Specifications (continued) Description Specifications DC Power Supply Specifications DC total output 1360W maximum DC voltage Typical range (U.S. and Canada) Typical range (international) -48 to -60 VDC continuous -48 VDC (nominal) -56 VDC (high) -42 VDC (low) -60 VDC (nominal) -72 VDC (high) -52 VDC (low) Power supply load 1360W maximum, 1000W typical with maximum configuration Maximum dissipated power at -48VDC 1/2A DC current Rated 40A Maximum power draw: 43A @ 42 VDC, 38A @ 48 VDC, 30A @ 60 VDC with chassis fully configured Heat dissipation 1800 W (6140 Btu/hr) DC voltages supplied and steady-state maximum current ratings +3V3 @ 15.0A +5V @ 5.0A +12V @ 6.0A +42V @ 28.84A DC wire gauge for power cable 816 AWG17, 90° , copper conductor (recommended18) 1. lfm = linear feet per minute. 2. UL = Underwriters Laboratories. 3. CSA = Canadian Standards Association. 4. EN = European Norm. 5. IEC = International Electrotechnical Commission. 6. TS = Technical Standard. 7. AS/NZS = Australian/New Zealand Standard. 8. EMI = electromagnetic interference. 9. LightStream 1010 port adapters installed in a Catalyst 8540 MSR chassis may not be EMI compliant. An EMI strip ships with the chassis for installation on the port adapters to meet EMI compliance. 10. FCC = Federal Communications Commission. 78-6134-03 Catalyst 8540 Chassis Installation Guide A-3

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A-3
Catalyst 8540 Chassis Installation Guide
78-6134-03
Appendix A
Chassis and Power Supply Specifications
DC Power Supply Specifications
DC total output
1360W maximum
DC voltage
Typical range
(U.S. and Canada)
Typical range
(international)
–48 to –60 VDC continuous
–48 VDC (nominal) –56 VDC (high) –42 VDC (low)
–60 VDC (nominal) –72 VDC (high) –52 VDC (low)
Power supply load
1360W maximum, 1000W typical with maximum configuration
Maximum dissipated
power at –48VDC
1/2A
DC current
Rated 40A
Maximum power draw: 43A @ 42 VDC, 38A @ 48 VDC,
30A @ 60 VDC with chassis fully configured
Heat dissipation
1800 W (6140 Btu/hr)
DC voltages supplied and
steady-state maximum
current ratings
+3V3 @ 15.0A
+5V @ 5.0A
+12V @ 6.0A
+42V @ 28.84A
DC wire gauge
for power cable
8
16
AWG
17
, 90
°
, copper conductor (recommended
18
)
1.
lfm = linear feet per minute.
2.
UL = Underwriters Laboratories.
3.
CSA = Canadian Standards Association.
4.
EN = European Norm.
5.
IEC = International Electrotechnical Commission.
6.
TS = Technical Standard.
7.
AS/NZS = Australian/New Zealand Standard.
8.
EMI = electromagnetic interference.
9.
LightStream
1010 port adapters installed in a Catalyst 8540 MSR chassis may not be EMI compliant. An EMI strip ships with
the chassis for installation on the port adapters to meet EMI compliance.
10.
FCC = Federal Communications Commission.
Table A-1
Chassis and Power Supply Specifications (continued)
Description
Specifications