H3c-technologies H3C MSR 50 Manual do Utilizador descarregar pdf (Página 31)

Figure 18 PGND screw of the router

Use a PGND cable 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

rounded. Otherwise, the router canno

reliably avoid lightning, which may damage the router itself and even the peer device.

Connecting the Power Cord

Based on power supply mode, the MSR 50-40 and MSR 50-60 each have two models: DC, AC. You can

choose suitable models as needed.

Power Input and PGND

Table 16 Power input and PGND of the MSR 50-40 and MSR 50-60 routers

Item Description

Power input (AC-powered)

Provide 100 VAC to 240 VAC power socket

Power input (DC-powered) Provide –60 VDC to –48 VDC power socket

PGND

Connected to the earth ground with ground cable

Connecting the AC Power Cord

AC power supply

AC input range: 100 VAC to 240 VAC, 50 Hz to 60 Hz

The following figure illustrates the power socket and switch for an AC-powered router:

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