Chapter 4
| Power and Grounding
How to Ground the Chassis
– 22 –
How to Ground the Chassis
The rear panel of the switch chassis includes a single hole grounding terminal. It
must be connected to ground to ensure proper operation and to meet
electromagnetic interference (EMI) and safety requirements.
Figure 9: Grounding Terminal
Before powering on the switch, ground the switch to earth as described below.
1. Ensure that the rack on which the switch is to be mounted is properly
grounded and in compliance with ETSI ETS 300 253.
2. Ensure that there is a good electrical connection to the grounding point on the
rack (no paint or isolating surface treatment).
3. Disconnect all power cables to the switch.
4. Attach a 6 AWG stranded copper wire to the grounding terminal on the switch.
The switch chassis is connected internally to 0 V. This circuit is connected to the
single-hole grounding terminal on the rear panel of the switch (left of the AC
power socket). The surface area around this terminal is not painted in order to
provide for a good connection.
5. Attach the grounding wire to the ground point on the rack.
Caution:
The earth connection must not be removed unless all supply
connections have been disconnected.
Grounding wire. Grounding terminal.
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