MI 3000 EasiPLUS IT supply systems
B.3.2 Line impedance
See chapter 5.5 Line impedance and prospective short-circuit current, the measurement
is the same; only terminal voltage monitor indication corresponds to IT system.
B.3.3 RCD testing
RCD testing is performed in the same way as in TN/TT system (See chapter 5.3 Testing
RCDs
), with the following exception:
Contact voltage measurement is not relevant.
Test circuit with bypassing principle should correspond to that in figure B.3.
L1
L2
L3
PE
R
E
Zi
L1
PE
L2
L
/
L
1
N
/
L
2
P
E
/
L
3
RCD
R
E2
RCD
Figure B.3: RCD testing in IT system
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