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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-17
Appendix A Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Specifications
Maximum Power Consumption,
Modular Configuration
This represents total input power.
Maximum DC 9.5 kW (assuming 88% efficiency)
Maximum AC 9.8 kW (assuming 92% efficiency)
Note Proper grounding is also required at the site to
ensure that equipment is not damaged by
lightning or power surges.
DC Power Lug Torque Ranges
Minimum torque 20 in-lb (2.2 N-m)
Maximum torque 30 in-lb (3.3 N-m)
Power Redundancy, Fixed
Configuration
DC 2N: Three “A” battery plant feeds for one PDU, and
three “B” battery plant feeds for the other PDU
AC (Delta or Wye 3-phase) 2N: Two independent Delta or Wye 3-phase power
sources required
Power Redundancy, Modular
Configuration
DC 2N: Up to four A battery plant feeds and up to four B
battery plant feeds required.
AC 2N: Up to three A AC single-phase power sources and
up to three B AC single-phase power sources required.
Inrush current, Fixed Configuration
DC 75 A
AC 160 A
Inrush current, Modular
Configuration
DC 90 Apk max
AC 30 Apk max
DC Input, Fixed Configuration
Nominal input voltage –48 VDC North America
–54 VDC Telco (RBOC)
–60 VDC International
(range –40.5 to –75 VDC)
Input current
(PDU rated for 60 A)
56 A (nominal)
66 A at –40.5 VDC (maximum)
DC Input, Modular Configuration
Nominal input voltage –48 VDC North America
–60 VDC International
(range –40 to –72 VDC)
Table A-1 Cisco CRS 8-Slot Line Card Chassis Component and Power Specifications (continued)