Installation Manual
3. Product Installation
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Figure 3-10 Removing a Power Module
Remove the power module uprightly and slowly.
Install a filler panel in the location where the power module is removed to ensure the normal
ventilation and dissipation and avoid the dust in the chassis.
3.7
Grounding
A PGND is installed on the back of QSW-6900-56LF. First connect the PGND to the grounding
terminal of the cabinet and then connect the grounding terminal to the grounding bar of the
equipment room.
Precautions
❖
The cross sectional area of the grounding cable should be determined according to the
possible maximum current. Cables of good conductor should be used.
❖
Do not use bare wire.
❖
The grounding resistance for combined grounding should be less than 1
Ω
.
To guarantee the security of the person and the device, the QSW-6900-56LF must be well-
grounded. The grounding resistance should
be less than 1Ω.
A service person should check whether or not the socket-outlet from which the device is to
be powered provides a reliable connection to the building protective earth. If not, the service
person should arrange for the installation of a protective earthing conductor from the
separate protective earthing terminal to the protective earth wire in the building.
The socket-outlet should be installed at a location near the device easy for operation.
During the device installation, always make the ground connected first and disconnected
last.
The cross-sectional area of protective earthing conductor should be at least 2.5 mm
2
(12
AWG).
