Cisco Nexus 7000 Series Manuale di istruzioni per l'installazione - Pagina 24

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Installation

Figure 15

Checking Electrical Isolation

The inner sides of the mounting brackets and the grommets on the chassis ears are shielded to isolate

the chassis from contact with the equipment rack. If your installation requires that the chassis be

electrically isolated from the rack, ensure that there are no conductive contact points between the

chassis and the rack before replacing the power supplies.

Use an ohmmeter to perform the following test:

Step 1

Step 2

Step 3

Proceed to the next section to replace the power supplies and reconnect the interface cables. If you

are performing an initial installation, proceed to the appropriate installation guide.

Note

Maintenance or Cisco 7507 Hardware Installation and Maintenance publications for cabling

guidelines and further instructions. First-time startup and troubleshooting procedures are not

covered in this installation document.

24 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions

Sliding the Chassis into the Rack

Zero out the ohmmeter.

Place one probe on an unpainted metal surface on the rack, and place the other probe on an

unpainted metal surface on the chassis (such as inside the power supply bay).

If the ohmmeter indicates an open circuit, the chassis is electrically isolated from the rack.

If the ohmmeter indicates a closed circuit (0 ohms), there is at least one contact point

between the chassis and the rack. Do not install the power supplies until you locate and

resolve all points of contact between the chassis and the rack.

If you are installing a new system, proceed to the Cisco 7000 Hardware Installation and