Connecting The Power Cord; Power Input And Pgnd; Connecting The Ac-Input Power Cord - H3C MSR 20 Installation Manual

Figure 11 Grounding terminal of the router
Use a PGND wire to connect the screw to the earth ground, and the grounding resistance should not be
greater than 5-ohm. Likewise, if the router is installed in a 19-inch standard rack, this rack is required to
be grounded too.
WARNING!
When the router is in normal operation, it is required to be well grounded. Otherwise, the router cannot
reliably avoid lightning, which may damage the router itself and even the peer device.

Connecting the Power Cord

The MSR 20-20/20-21/20-40 router is available with AC-powered units.

Power Input and PGND

Table 13 Power input and PGND of the MSR 20-20/20-21/20-40 router
Item
Power input
PGND

Connecting the AC-input Power Cord

AC power supply
Rated voltage range: 100 VAC to 240 VAC, 50 Hz/60 Hz
The following figure illustrates the partial external appearance of the power socket for an AC-powered
router:
Description
100 VAC to 240 VAC power input socket
Connected to the earth ground with ground cable
18