D-Link DGS-8000 Serie Guía De Instalación Rápida página 7

• Provide two kinds of grounding in the
equipment room:
- Safe Grounding - guarantees your safety
and that of the equipment. A typical
example is the AC protection grounding of
the 3-core socket of a power-supply bank.
Figure 8-1 The three-core socket of a
power-supply bank
- Lightning-Prevention Grounding -
prevents lightning strikes from affecting
the user and the switch. It includes a
lightning rod, down conductor, and
grounding system.
Rack-grounding poles
Figure 8-2 Grounding poles on the back of the
chassis of a DGS-8000 switch
DGS-8000 Grounding Method:
• Connect the grounding poles on the back of
the chassis of a DGS-8000 series switch to
the grounding pole or grounding bar of the
machine room through grounding cables.
• Connect the power modules to the power
socket using 3-core AC cables. The socket's
AC protection grounding is also connected
to the grounding pole or grounding bar
of the equipment room. This method is
specifically for a DGS-8000 series chassis
that uses AC power.
DGS-8000 Series - Grounding Steps
• Release and remove the nut on the
grounding pole at the back of the chassis.
• Lock the terminal of the grounding cable to
the grounding pole.
• Tighten the nut.
• Connect the other end of the grounding
cable to the grounding pole or grounding
bar of the machine room.
Static Electricity Prevention
To avoid damage from static electricity, please
conform to the following guidelines:
• Ensure that the static electricity prevention
measures are taken in sites where switches
are installed.
• Always wear an antistatic strap when
working around any electronic circuitry.
An antistatic wrist strap is included in the
packaging of DGS-8000 series switches.
• Hold a circuit board by its edges. Do not
touch any components on the PCB.
Follow these steps to correctly use an antistatic
wrist strap:
1. Put your hand through the loop of the
antistatic wrist strap.
2. Tighten the strap lock and make sure that
the metal part of the antistatic wrist strap is
in contact with your skin.
3. Insert the end of the wrist strap into the
antistatic wrist strap jack of the switch rack,
or clip it to the grounding pole of the rack.
The antistatic wrist strap jack is located on
the front panel of the rack and marked in
yellow as "ESD".
4. Make sure the antistatic wrist strap is
grounded well and the DC electric
resistance between the body and the
ground is in the range of 1 to 10 mega ohm.
DGS-8000 Series Chassis-Based Switch  7