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Protection unit MP2.10
3. Diagnostic test
During commissioning and periodic maintenance it is recommended to carry out the self-diagnostic procedure
by means of the "T" button on the MP2.10 front to verify the correct operation of the breaker and the protec-
tion unit. The self-diagnostic procedure managed by the microcontroller allows to check the efficiency of the
PU and the device, causing the opening/trip of the DMX³ after electronic command, starting from the CLOSE
position and MP2.10 on, as described below:
Test executable with
power contacts
closed
<
1. Press T button for at least 1 second
2. Confirm by pressing the navigation knob, to cancel rotate without pressing.
Ir
psw
A
tr
Navigation knob
T buttom
Isd
A
I²t=k
Ii
Ig
A
A
I²t=k
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