H3C S5120-EI Series, Руководство по установке

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3-14
are well connected, and the three-wire input cable of the PGND cable is used for the power supply cable.
If the PE wire of the AC power supply is not grounded at the power distribution room or AC transformer
side, report the problem and make reconstructions.
Figure 3-18
Ground through an AC power PE wire
(1) Three-wire AC power input cable (2) Switch rear panel
Use the PGND cable provided with the switch to connect the grounding strip in the equipment room.
Otherwise, the grounding effect may not be ensured, which easily causes damage to the switch.
Connecting the Power Cords
Make sure that the ground wire has been properly connected before powering on the switch.
Connecting the AC Power Cord
To connect an AC power cord, follow these steps:
Step1
Connect one end of the chassis ground wire to the grounding screw on the rear of the chassis and the
other end to the ground as near as possible.
Step2
Install the bail latch to prevent the AC power cord from accidentally falling off. Fix the bail latch into the
holes located at the two sides of the AC power receptacle. Then pull the bail latch upwards (see in
Figure 3-19 or Figure 3-21).
Step3
Connect one end of the AC power cord to the AC receptacle on the switch (see callout 1 in Figure 3-20
or Figure 3-22).
Step4
Pull the bail latch down to secure the plug to the AC receptacle (see callout 2 in Figure 3-20 or Figure
3-22).