Chapter 4
| Power and Grounding
How to Connect to AC Power
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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. The switch chassis is connected internally to 0 V. This circuit is connected to the
dual-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. Attach a 6 AWG stranded copper wire to the
grounding terminal on the switch.
5. Then 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.
How to Connect to AC Power
To supply AC power to the switch, first verify that the external AC power supply can
provide power that meets the specifications in Table 2.
To connect the switch to a power source:
1. Plug the power cord into a grounded, 3-pin, AC power source.
Figure 20: AC Power Cord and Power Socket
AC Power Cord AC Power Socket
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