Installation
For more technical details see Network interfaces on page 275.
4.4 Earthing and protecting the communication server
The protective earth and equipotential bonding are important integral parts of the safety concept: Standard
EN 60950 relevant to safety matters stipulates protective earthing.
CAUTION:
High leakage currents can occur as a result of connecting to the communication network. Establish
an earth connection before connecting to the communications network.Disconnect the communication
server from the communications network before carrying out maintenance work.
CAUTION:
Transient overvoltage can occur on the mains and on the communications network. Protect each line
installation leading from the building by using one surge voltage protector per core at the isolating
point (main) distribution frame or entry point into the building.
Operation on an IT current distribution system:
The communication server can be operated on an IT power distribution system as per EN/IEC 60950 with
voltages of up to 230 VAC.
4.4.1 Connecting the earthing wire
The communication server’s earthing connection is located at the front left on the underside and can only
be connected once the housing cover has been removed. The earthing wire is secured by a screw, spring
washer and serrated lock washer, which are included in the screw set of the communication server. The
serrated lock washer must rest against the metal housing of the communication server.
Figure 16: Earthing connection
Release 7.1
System Manual for Mitel SMB Controller 96
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