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EX-3524/EX-3548 Layer 2 Gigabit Ethernet PoE/PoE+ Switch
3.3 Power and Grounding
The switches require power from an external AC power supply that can provide 100 to 240 VAC, 50-60 Hz. A
standard AC power socket is located on the rear panel EX-3524 (left) and EX-3548 (right) of the each switch.
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.
To ground the switch chassis:
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 single-hole grounding
terminal on the rear panel of the switch. The surface area around this terminal is not painted in order to
provide for a good connection.
5.
Attach a 6 AWG stranded copper wire to the grounding terminal on the switch.
6.
Attach the grounding wire to the ground point on the rack
.
CAUTION
The earth connection should not be removed unless all power supply connections
have been disconnected.
