27/01/22
User Manual TPS/T 10-90kVA 62000560_09_
26
4.2.
PROTECTIONS
Mandatory
Safety protection (Magneto-thermal and differential) are mandatory according to
the nominal TPS/T characteristic.
An additional adequate protection
must be added
when electrical components
(cable, Equipment under test
–
EUT) cannot support TPS/T performance.
4.2.1.
RCD Protection
It is necessary to insert a differential protection both in input and output; this because there is a
galvanic isolation from the input to the output, so the input RCD switch does not see leakage
current to the ground on the output.
Suggested RCD protections:
1.
Input line
→
1/3-Phase B-type RCD switch 30mA;
2.
1-phase Output line
→
1-phase RCD switch depend of use;
3.
3-phase Outuput line
→
3-phase RCD switch depend of use;
4.2.2.
Magneto-Thermic protections
The Magneto-thermic Protections protect the input line from short-circuits currents.
Generally, the Magneto-thermic type depend of the load, the section and length of the cable used
for power connection.
For selecting the right magneto-thermic switching, refer to the input and output currents of your
model.
