H3C S3100-8C-Sl Quick Start Manual page 60

Quick Start (For Japan)
H3C S3100 Series Ethernet Switches
2) Use a flat-blade screwdriver to loosen the two screws on the
DC input terminal blocks. Connect the power ground return
cable to the RTN(+) terminal and the power output cable to
the NEG(-) terminal. Tighten the two screws respectively to
fix the power cables.
3) Check whether the PWR LED on the front panel of the
switch is ON. If yes, the power is properly connected.
Caution:
Before powering on the switch, you should properly connect the
grounding cable.
The DC power cable should be less than 3 meters long.
II. DC power cable connection for S3100-26TP-PWR-EI
Ethernet switch
＋ － NULL ＋ － NULL
+: Working ground
–: Voltage input (–52 VDC to –56 VDC)
Figure 3-22 RPS DC power socket for S3100-26TP-PWR-EI
Ethernet switch
NULL: Reserved
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Chapter 3 Installation