Power Requirements; Power Connection Guidelines; Ac-Powered Systems - Cisco SCE 8000 Installation And Configuration Manual

Chapter 4 Installing the Cisco SCE 8000 Chassis
Table 4-2
Specification
Relative humidity
Heat dissipation

Power Requirements

Warning Read the installation instructions before connecting the system to the power source.
Statement 1004
Follow these requirements when preparing your site for the Cisco SCE 8000 installation:
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Power Connection Guidelines

This section provides the guidelines for connecting the Cisco SCE 8000 AC and DC power supplies to
the site power source:
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AC-Powered Systems

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Ambient Temperature and Humidity Requirements for the Cisco SCE 8000
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 because of 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 SCE 8000, which can have substantial current draw
fluctuations because of bursty data traffic patterns.
AC-Powered Systems, page 4-5
DC-Powered Systems, page 4-12
Site Planning Checklist, page 4-14
Each chassis power supply should have its own dedicated branch circuit.
Circuits must be protected by a dedicated two-pole circuit breaker.
Acceptable Range
Operating: 10% to 85%
Storage: 5% to 95% (non-condensing)
Single Cisco SCE 8000-SCM-E module:
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AC Power: 950 W / 3250 BTUs
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DC Power: 1000 W / 3450 BTUs
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• Dual Cisco SCE 8000-SCM-E modules:
– AC Power: 1350 W / 4600 BTUs
– DC Power: 1430 W / 4880 BTUs
Cisco SCE8000 GBE Installation and Configuration Guide
Power Connection Guidelines
4-5