Cisco Systems Cisco uBR10012 Power Guidelines, Power Connection Guidelines for DC-Powered Systems

Chapter 2 Preparing for Installation

Site Requirements

Table 2-1	Specifications for Operating and Nonoperating Environments (continued)
Specification		Minimum	Maximum
Humidity, ambient (noncondensing) operating		5%	85%
Humidity, ambient (noncondensing) nonoperating and		5%	95%
storage
Altitude, operating and nonoperating		–197 ft (–60 m)	13,123 ft (4000 m)
Vibration, operating		—	5 to 200	Hz, 0.5 g (1 octet/min.)
Vibration, nonoperating		—	5 to 200	Hz, 1 g (1 octet/min.)
			200 to 500 Hz, 2 g (1 octet/min.)

Power Guidelines

Follow these precautions and recommendations when planning power connections to the

Cisco uBR10012 router:

•Check the power at your site before installation and periodically after installation to ensure that you are receiving clean power. Install a power conditioner if necessary.

•Provide proper grounding to avoid damage from lightning and power surges.

•Use a 6-AWG, copper ground conductor (minimum requirement) when attaching the chassis ground to a central office or other interior ground system.

Warning This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045

Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022

Power Connection Guidelines for DC-Powered Systems

The DC-input power supply allows the Cisco uBR10012 router to operate on either –48 or –60 VDC systems.

See Appendix A, “Technical Specifications,” for system power specifications, including input voltage and operating frequency ranges.

Warning Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV) requirements in IEC 60950 based safety standards. Statement 1033

Cisco uBR10012 Universal Broadband Router Hardware Installation Guide

OL-18259-01 2-7