H3C Technologies H3C S12500 Series Switches - Manual (Page 16)

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Figure 18 Connecting the DC power cord to the grounding strip
5. Connect the other end of the DC power cord to the power source:
{
Connect the other end of the black DC power cord to the RTN(+) terminal that provides power
to the switch.
{
Connect the other end of the blue DC power cord to the negative terminal (–) that provides a
power module to the switch.
{
Connect the other end of the grounding cable to a reliable grounding point.
6. Put the protection cover on the wiring terminals.
Figure 19 Installing the protection cover