Cisco WAVE-574-K9 - Wide Area Virtualization Engine 574, Руководство по установке оборудования

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Chapter 2 Preparing to Install the WAVE-574
Understanding the Grounding Requirements
2-8
Cisco Wide Area Virtualization Engine 574 Hardware Installation Guide
OL-17738-01
Caution
Protect the WAVE appliance from power fluctuations and temporary interruptions
with a regulating uninterruptible power supply (UPS). This device protects the
hardware from damage caused by power surges and voltage spikes and keeps the
system in operation during a power failure.
When installing more than one WAVE appliance, you may need to use additional
power distribution devices to safely provide power to all devices. Observe the
following guidelines:
•
Balance the WAVE appliance power load between available AC supply
branch circuits.
• Do not allow the overall system AC current load to exceed 80 percent of the
branch circuit AC current rating.
•
Do not use common power outlet strips for this equipment.
•
Provide a separate electrical circuit for the WAVE appliance.
For details about the WAVE-574 power requirements, see Appendix A,
“WAVE-574 Hardware Specifications.”
Understanding the Grounding Requirements
To ensure proper operation and safety, you must properly ground the WAVE
appliance. In the United States, install the equipment in accordance with NFPA
70, 1999 Edition (National Electric Code), Article 250, as well as any local and
regional building codes. In Canada, you must install the equipment in accordance
with Canadian Standards Association, CSA C22.1, Canadian Electrical Code. In
all other countries, you must install the equipment in accordance with any
regional or national electrical wiring codes, such as the International
Electrotechnical Commission (IEC) Code 364, parts 1 through 7. Furthermore,
you must be sure that all power distribution devices used in the installation, such
as branch wiring and receptacles, are listed or certified grounding-type devices.
Because of the high ground-leakage currents associated with multiple WAVE
appliances connected to the same power source, we recommend the use of a PDU
that is either permanently wired to the building’s branch circuit or includes a