H3C Technologies H3C S10500 Series Switches User Manual

Page 28

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20

Grounding the switch through the RTN wire of a DC power
supply

CAUTION:

Make sure the RTN wire is well grounded from the DC egress of the DC power cabinet.

If the switch is powered by a –48 VDC power supply and no grounding strip is available at the

installation site, you can ground the switch through the return (RTN) wire of the DC power supply, as
shown in

Figure 17

.

Figure 17 Grounding the switch through the RTN wire of the DC power supply

DC power

box

–48V strip

RTN strip

PGND strip

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