18
The power input end of the switch has a noise filter, whose central ground is directly connected to the
chassis to form the chassis ground (commonly known as PGND). You must securely connect this
chassis ground to the earth so the faradism and leakage electricity can be safely released to the earth
to minimize EMI susceptibility of the switch.
You can ground the switch using one of the following methods, depending on the grounding
conditions available at the installation site:
•
Grounding the switch with a grounding strip
•
Grounding an AC-powered switch through the PE wire
The power and grounding terminals in this section are for illustration only.
Grounding the switch with a grounding strip
1.
Attach the two-hole grounding lug at one end of the grounding cable to a grounding point on
the switch chassis.
{
48G model and 48G TAA model: see "
Connecting the grounding cable to the switch
chassis
."
{
96G model and 96G TAA model: See "
Connecting the grounding cable to the switch
chassis
."
2.
Connect the ring terminal at the other end of the grounding cable to a grounding post on the
grounding strip, and fasten the grounding cable to the grounding post with a hex nut.
Figure 19
Connecting the grounding cable to a grounding strip
(1) Hex nut
(2) Ring terminal
(3) Grounding post
(4) Grounding strip
Grounding an AC-powered switch through the PE wire
If you ground an AC-powered switch through the PE wire of the power cable, make sure the following
conditions are met:
•
The power cable is a three-wire power cable that has a PE terminal.
