Recommended Airflow; Site Power Guidelines - Cisco NCS 540 Hardware Installation Manual

Recommended Airflow

Recommended Airflow

The movement of air around the router should not be more than 1 m/s from 5 inches front clearance.

Site Power Guidelines

The chassis has specific power and electrical wiring requirements. Adhering to these requirements ensures
the reliable operation of the system. Follow these precautions and recommendations when planning your site
power for the chassis:
• The redundant power option provides a second, identical power supply to ensure uninterrupted power
• Connect each power supply to a separate input power source. Otherwise, it results in a total power failure
• To prevent loss of input power, ensure that the maximum load on each circuit is within the current ratings
• Check the power at your site before installation, and periodically after installation, to ensure that you are
• Provide proper grounding to avoid personal injury and damage to the equipment due to power surges or
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
Caution This product requires external surge protection device for both AC and DC power feeds to the equipment.
For DC power feed, the surge protective device (SPD) must handle common mode and differential mode
surge as per the local standards.
Note
The chassis installation must comply with all the applicable codes, and is approved for use with only copper
conductors. The ground bond-fastening hardware must be compatible and preclude loosening, deterioration,
and electrochemical corrosion of hardware and joined material. Attachment of the chassis ground to a central
office or other interior ground system must be made with a 6-AWG gauge wire copper ground conductor.
Cisco Network Convergence System 540 Large Density Routers Hardware Installation Guide
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supply.
to the system due to a fault in the external wiring or a tripped circuit breaker.
of the wiring and the breakers.
receiving clean power. If necessary, install a power conditioner.
lightning striking power lines. The chassis ground must be attached to a central office or other interior
ground system.
Prepare for Installation