Chapter 2 Preparing for Installation
Power Requirements
Power Connection Guidelines for AC-Powered Systems
This section provides basic guidelines for connecting
•In some systems, you may decide to use an uninterruptible power supply (UPS) to protect against power failures at your site. Be aware when selecting a UPS that some UPS models that use ferroresonant technology can become unstable when operating with the ME 6524 switch power supplies that use power factor correction (PFC). This configuration can cause the output voltage waveform to the switch to become distorted resulting in an undervoltage situation in the system.
•In systems configured with two power supplies, 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.
•The
•To prevent a loss of input power, be sure that the total maximum load on each source circuit is within the current ratings of the wiring and breakers.
•If you are using a 200/240 VAC power source in North America, the circuit must be protected by a
•Ensure that all power connection wiring conforms to the rules and regulations in the National Electrical Code (NEC) and any additional local codes.
•The source AC outlet must be within 6 feet (1.8 meters) of the system and should be easily accessible.
•The AC power receptacles used to plug in the chassis must be the grounding type. The grounding conductors that connect to the receptacles should connect to protective earth ground at the service equipment.
•The circuit breaker is considered the disconnect device and should be easily accessible.
•You must protect the circuit by using a dedicated
Power Connection Guidelines for DC-Powered Systems
This section provides basic guidelines for connecting
When preparing your site for the switch installation, follow these requirements:
•In systems configured with two power supplies, 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 source circuit is within the current ratings of the wiring and breakers.
•You can connect the
•Ensure that all power connection wiring conforms to the rules and regulations in the National Electrical Code (NEC) and any additional local codes.
•Ensure that the DC return remains isolated from the system frame and the chassis
Cisco ME 6500 Series Ethernet Switch Installation Guide
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