H3C Technologies H3C MSR 20-1X - Manual (Page 28)

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Figure 16 Protection grounding terminal of the router
Use a PGND cable to connect the protection grounding terminal to the ground, with the grounding
resistance not greater than 5 ohms. Likewise, if the router is installed in a 19-inch standard cabinet, the
cabinet shall also be well grounded.
WARNING!
The router in operation must be well grounded. Otherwise, the router cannot be protected against
lightning, and consequently, the router or even the peer device may be damaged.
Connecting the Power Cord
MSR 20-1X routers support AC power input only.
Power Socket and PGND
Table 15 Power socket and PGND of MSR 20-1X routers
Item Description
Power socket Connected to a 100 VAC to 240 VAC power
PGND Connected to the ground with a PGND cable
Connecting the AC Power Cord
AC power supply
Rated voltage range: 100 VAC to 240 VAC, 50 Hz to 60 Hz
The figure below shows the appearance of the power socket on the router:
Figure 17 Appearance of the AC power socket on the router
(1) Power switch (2) AC power socket