Cisco 15530-LCMB-0200 - ESCON Multiplexing Line Card Multiplexor Hardware-Installationshandbuch - Seite 30

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Power Guidelines

The Cisco ONS 15530 installation must comply with all applicable codes and is approved for use with

Note

copper conductors only. The ground bond fastening hardware should be of compatible material 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 should be made with

a 6-AWG, copper ground conductor at a minimum.

Power Connection Guidelines for DC-Powered Systems

The DC-input power supply allows the Cisco ONS 15530 to operate at –48 VDC nominal in North

America and –60 VDC in Europe.

See

operating frequency ranges.

The DC return is to remain isolated from the system frame and chassis (DC-I).

Note

A readily accessible disconnect device must be incorporated in the building's installation wiring.

Warning

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that

Warning

a Listed and Certified fuse or circuit breaker, 25A minimum 60 VDC, is used on all current-carrying

conductors.

Plant Wiring Guidelines

Following are guidelines for setting up the plant wiring and cabling at your site. When planning the

location of the new system, consider the distance limitations for signaling, EMI, and connector

compatibility, as described in the following sections.

Interference Considerations

When wires are run for any significant distance in an electromagnetic field, interference can occur

between the field and the signals on the wires. This fact has two implications for the construction of plant

wiring:

•

To predict and remedy strong EMI, you may also need to consult experts in radio frequency interference

Note

(RFI).

Cisco ONS 15530 Hardware Installation Guide

2-30

Appendix A, "Specifications,"

Bad wiring practice can result in radio interference emanating from the plant wiring.

Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy the signal

drivers and receivers in the Cisco ONS 15530.

for system power specifications, including input voltage and

Chapter 2

Installing the Cisco ONS 15530

OL-7706-01