Cisco Systems OL-6256-17 manual Minimum torque In-lb 2.2 N-m Maximum torque In-lb 3.3 N-m

Appendix A Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Specifications

Table A-1 Cisco CRS 8-Slot Line Card Chassis Component and Power Specifications (continued)

Maximum Power Consumption,	This represents total input power.
Modular Configuration
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	56 A (nominal)
(PDU rated for 60 A)	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)

Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide

A-2 OL-6256-17