Cisco XR 12404 - Manual (Page 50)

Chapter 2 Preparing for Installation
Safety and Compliance
2-4
Cisco XR 12404 Router Installation Guide
OL-13830-02
• A Cisco XR 12404 Router configured with a DC PEM requires a dedicated
35–Amp DC circuit breaker for the DC power source. This circuit breaker
should protect against short-circuit and overcurrent faults in accordance with
United States National Electrical Code NFPA 70 (United States), Canadian
Electrical Code, part I, CSA C22.1; CSA C22.2 No. 0 (Canada) and IEC 364
(other countries).
• Only a DC power source that complies with the safety extra-low voltage
(SELV) requirements in UL60950, CSA 60950, EN60950, and IEC 60950
can be connected to a Cisco XR 12404 Router DC PEM.
• A Cisco XR 12404 Router configured with a DC PEM is to be installed in a
restricted access area and in accordance with Articles 110–18, 110–26, and
110–27 of the National Electric Code, ANSI/NFPA 70.
• A Cisco XR 12404 Router configured with a DC power distribution unit
(PDU) shall have a readily accessible disconnect device incorporated in the
fixed wiring.
Compliance and Safety Information
The Cisco XR 12404 Router is designed to meet the regulatory compliance and
safety approval requirements. Refer to the Regulatory Compliance and Safety
Information for the Cisco XR 12000 Series Routers.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage to circuit boards can occur if they are
handled improperly. Such mishandling can result in intermittent or complete
failures of the board.
When handling circuit boards, observe the following guidelines to prevent ESD
damage.
• Always use an ESD-preventive ankle or wrist strap and ensure that the strap
makes adequate contact with your skin.
• The ankle or wrist strap protects equipment from ESD voltages on the body
only; ESD voltages on clothing can still cause damage to electronic
components.
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