Cisco Catalyst 2955 Hardware Installation Manual page 138
Cisco systems switch installation guide
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Also See for Catalyst 2955:
- Installation notes (12 pages) ,
- Configuration manual (710 pages) ,
- Command reference manual (686 pages)
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Preparing for Installation
The switch relays are rated at 1 Amp and have a voltage limit of 30 VDC and 0.3
Warning
Amp at a voltage limit of 125 VAC. It is dangerous to exceed these limitations in
a hazardous environment.
An electrical arc can occur when you connect or disconnect the relay wires
with field side power applied. This could cause an explosion in switch
installations in a hazardous location. Before proceeding, be sure that power is
removed or the area is not hazardous. Statement 1061.
Warning
This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in IEC
publication 60664-1), and at altitudes up to 2000 meters without derating.
Statement 1068
Warning
This equipment is supplied as "open type" equipment. It must be mounted
within an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The interior of the enclosure
must be accessible only by the use of a tool.
The enclosure must meet IP 54 or NEMA type 4 minimum enclosure rating
standards. Statement 1063
Use twisted-pair supply wires suitable for 86°F (30°C) above surrounding
Warning
ambient temperature outside the enclosure. Statement 1067
An exposed wire lead from a DC-input power source can conduct harmful levels
Warning
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the power and relay connector. Statement 122
Catalyst 2955 Hardware Installation Guide
4-4
Chapter 4
Installation in a Hazardous Environment
78-14944-03
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