Installation
97
Mitel SMB Controller
syd-0657/2.0 – R6.0 – 09.2018
Tip
To remove the cable cover reach into the side openings of the cover, gently press the two
(engaged) lugs outwards and remove the cover.
4. 3
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.
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. 3. 1
Connecting the earthing wire
The communication server’s earthing connection is located at the front left on the un-
derside 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.
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.