TT system
The TT earthing system, shown in the following figure, is NOT widespread and presents problems for
the EMC requirements, which can only be fully met with precautions and measurements in the field.
The following are the main features:
a.
Direct connection to ground (ground point)
b.
NA
c.
Connection to the ground of all parts exposed to contact and all shields
5.3.5.2 Protection Components
Fuses
It is recommended to implement protection against short circuit in the final application using external
semiconductor type fuses, 660 VAC, 200 kA M.A.H., or other with the same characteristics.
The sizing of the mains fuses can be achieved using the next size larger than the DM2020 system
current.
PN: L-MAM2-E-201
Moog Casella DM2020 Installation and Startup Guide
5.3.5.2 Protection Components
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