Earthing And Protecting The Communication Server; Connecting The Earthing Wire - Mitel 470 System Manual

Installation
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.
Warning
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.
Warning
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. 3. 1

Connecting the earthing wire

The communication server's earthing connection is located on the rear panel of the
communications server next to the mains power socket. The earthing wire is secured
using a screw and a spring washer.
Fig. 21 Earthing connection
100
Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016