H3C Technologies H3C S5500 Series Switches - Manual (Page 43)

35
Figure 28 Grounding the switch by burying the grounding conductor into the earth ground
(1) Grounding screw (2) Grounding cable (3) Earth ground
(4) Joint (5) Grounding conductor (6) Switch rear panel
Grounding the switch in other grounding environments
Grounding an AC-powered switch
If the installation site has no grounding strips or earth ground, you ground an AC-powered switch through
the PE wire of the AC power supply.
Make sure the PE wire is well connected to the ground at the power distribution room or AC transformer
side, the switch PE terminal and the PE wire are well connected, and the three-wire input cable of the
grounding 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 reconstruct the
grounding system.
Figure 29 Grounding through an AC power PE wire
(1) Three-wire AC power input cable (2) Switch rear panel
Grounding a DC-powered switch
If the installation site has no grounding strips or earth ground, you ground a DC-powered switch through
the return wire (RTN) of the DC power supply, and make sure this RTN wire is well connected to the
ground at the DC output of the DC power cabinet.
(1)
(2)
(3)
(4)
(5)
(6)