Connecting The Pgnd Cable - H3C SecPath V100-E Installation Manual

Connecting the PGND Cable

A correct connection of the protection ground (PGND) cable on the device chassis is an essential
safeguard against lightning strokes and electromagnetic interference (EMI). When installing or using
the device, make sure the PGND cable is correctly connected.
The V100-E provides a grounding screw, which must be well grounded, so as to safely conduct the
inductive and leaky current to the earth ground, and thereby improve the capability of the whole device
to guard against the electromagnetic interference.
The grounding screw of the V100-E, which is marked with grounding symbol, is at the right end on the
real panel, as shown in Figure 3-3.
Figure 3-3 Grounding screw of the V100-E
(1) Ground screw
Use a PGND cable to connect the grounding screw to the earth ground, and the grounding resistance
should not be greater than 5 ohm. Likewise, if the V100-E is installed in a 19-inch standard rack, this
rack is required to be grounded too.
The V100-E must be well grounded during its operation. Otherwise, it cannot be protected reliably from
lightning, which may damage the V100-E itself and even the peer device.
3-3