2.5 Frame Earth Connection
Getting Started for Virtual IP Cards 13
CAUTION
To protect the back board from static electricity, do not touch parts on the back board in the main unit,
and PSU. To discharge static electricity, touch ground or wear an earthing strap.
Installing the Power Supply Unit
1. Insert the PSU along the guide rails.
2. Push the release lever in the direction of the arrow, so that the PSU engages securely with the
connector on the back board.
3. Turn the 4 screws clockwise, in the order indicated by the numbers 1 to 4, to fix the PSU.
2.5 Frame Earth Connection
IMPORTANT
Connect the frame of the PBX to earth.
• Proper earthing (connection to earth) is very important to protect the PBX from the bad effects of
external noise or to reduce the risk to the user of electrocution in the case of a lightning strike.
• The earthing wire of the AC cable has an effect against external noise and lightning strikes, but it may
not be enough to protect the PBX. A permanent connection between earth and the earth terminal of
the PBX must be made.
1. Loosen the screw.
2. Insert an earthing wire (user-supplied)*.
3. Tighten the screw.
4. Connect the earthing wire to earth.
* For earthing wire, green-and-yellow insulation is required, and the cross-sectional area of the
conductor must be more than 0.75 mm
2
or 18 AWG.
Guide Rail
Back Board
Release Lever
Screws
1
3
2
4
To earth
Earthing
wire
Screw
To Next Page
Loading...
Need help?
General
Weight and Dimensions
