Power Requirements; Power Connection Guidelines - Cisco SCE8000 GBE Installation And Configuration Manual

Preparing for Installation
Table 4-2
Specification
Temperature
Relative humidity
Heat dissipation

Power Requirements

Read the installation instructions before connecting the system to the power source.
Warning
Follow these requirements when preparing your site for the Cisco SCE8000 GBE installation:
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Power Connection Guidelines

This section provides the guidelines for connecting the Cisco SCE8000 GBE AC and DC power supplies
to the site power source.
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Cisco SCE8000 GBE Installation and Configuration Guide
4-4
Ambient Temperature and Humidity Requirements for the Cisco SCE 8000 GBE
The redundant power configuration provides a second, identical power supply to ensure that power
to the chassis continues uninterrupted if one power supply fails or input power on one line fails.
Connect each of the two power supplies to a separate input power source. If you fail to do this, your
system might be susceptible to total power failure due to a fault in the external wiring or a tripped
circuit breaker.
To prevent a loss of input power, be sure that the total maximum load on each circuit supplying the
power supplies is within the current ratings of the wiring and breakers.
In some systems, you might use an uninterruptible power supply (UPS) to protect against power
failures at your site. Avoid UPS types that use ferroresonant technology. These UPS types can
become unstable with systems like the Cisco SCE8000 GBE , which can have substantial current
draw fluctuations due to bursty data traffic patterns.
AC-Powered Systems, page 4-5
DC-Powered Systems, page 4-11
Site Planning Checklist, page 4-13
Chapter 4
Acceptable Range
Nominal: 32°F to 104°F (0°C to 40°C)
Storage: -4°F to 149°F (-20°C to 65°C)
Operating: 10% to 85%
Storage: 5% to 95% (non-condensing)
Single SCE8000-SCM-E module:
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– AC Power: 950W / 3250 BTUs
– DC Power: 1000W / 3450 BTUs
Dual SCE8000-SCM-E modules:
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AC Power: 1550W / 5294 BTUs
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– DC Power: 1600W / 5464 BTUs
Installing the Cisco SCE8000 GBE Chassis
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