H3C Technologies H3C S12500 Series Switches - Manual (Page 48)

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Figure 36 Connecting the grounding cable
If there is no grounding point on the rack, you can attach the grounding cable to a grounding strip. The
installation procedures are similar.
Installing a power supply
The S12500 switches supports both AC and DC power supply. You can select either AC or DC power
supplies as needed. For how to connect power cords, see "
Connecting power cords ."
Installation preparation
CAUTION:
•
Hold a power entry module (PEM) or power supply by the bottom when moving it. Never attempt to lift
a PEM or power supply with its handle because the handle is not designed to support weight. Doing so
might result in bodily injury or damage to the module.
• When inserting or removing a power supply, verify that the switch is sturdy. To prevent bodily injury,
avoid tipping the switch chassis.
• When hot-plugging power supplies, make sure the insertion interval is no less than 30 seconds.