Dell S4810-ON Installationsanleitung PDF herunterladen (Seite 23)

Power Supplies

The S4810–ON supports two hot-swappable power supply units (PSUs) with integrated fans that provide

cooling for the system.

The S4810–ON supports AC power supplies with two air-flow directions (normal and reversed). Two

PSUs are required for full redundancy, but the system can operate with a single PSU.

NOTE: If you use a single PSU, install a blank plate in the other PSU slot. Dell Networking

recommends using power supply 2 (PSU2) as the blank plate slot.

The PSUs are field replaceable. When running with full redundancy (two power supplies installed and

running), you can remove and replace one PSU while the other PSU is running without disrupting traffic.

The power supply LED indicates the power supply status:

• Off — no power

• Solid Green — Power supply is present and working

WARNING: ESD damage can occur if components are mishandled. Always wear an ESD-

preventive wrist or heel ground strap when handling the S4810–ON and its components.

WARNING: To prevent electrical shock, ensure that the S4810–ON is grounded properly. If you

ground your equipment incorrectly, excessive emissions may result. To ensure that the power

cables meet your local electrical requirements, use a qualified electrician.

Components

The following power supply options are available for the S4810–ON.

• AC power supply with integrated fan

• AC power supply with integrated reverse flow fan

Power supply 1 (PSU1) is on the left side of the chassis; power supply 2 (PSU2) is on the right side of the

chassis.

The PSUs in the S4810–ON are field replaceable. When both power supplies are installed and running,

you can remove one power supply without interrupting traffic.

The PSUs are in a single piece with the PSU fans. You can replace the fan trays individually, but you

cannot replace the fans that are attached to the PSUs — if the fans attached to the PSU fail, you must

replace the entire PSU. For fan tray replacement procedures, refer to Fans.

WARNING: Prevent exposure and contact with hazardous voltages. Do not attempt to operate

this system with the safety cover removed.

CAUTION: Remove the power cable from the PSU prior to removing the PSU. Also, do not

connect the power cable before you insert the PSU in the chassis.

NOTE: To comply with the GR-1089 Lightning Criteria for Equipment Interfacing with AC Power

Ports, use an external SPD at the AC input of the router.

Power Supplies

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