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Metrel MI 3102 BT - Eurotest XE Manual

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MI3002 MI3100 MI3102 Reduced low voltage supply systems
99
Figure C.3: RCD contact voltage test
C.3.3 Line resistance and prospective short circuit current
Measured resistance represents Line-Line resistance (RL1-L2). Nominal system voltage
for calculation of IPSC is set to 110 V.
Nominal system voltage range for line resistance measurement is 90 V to 121 V. If input
voltage is out of range it is displayed on terminal voltage monitor, together with the
indicator of disabled test .
C.3.4 Fault loop resistance and prospective fault current
Definition of nominal system voltage for calculation of IPFC is changed to:
55 V for single-phase center-tap system selected,
63 V for three-phase system selected.
Tests can be carried out for both combination L1-PE and L2-PE. Each individual test
result is accompanied with appropriate indication.
Nominal input voltages are:
Nominal input voltage UN Voltage range
Single-phase 55 V system (44 V ≤ U < 61 V),
Three-phase 63 V system (56 V ≤ U ≤ 70 V),
If input voltage is out of range it is displayed on terminal voltage monitor, together with
the indicator of disabled test .
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