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Metrel MI 3102 BT - Eurotest XE Manual

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MI3002 MI3100 MI3102 Reduced low voltage supply systems
98
The table below contains EurotestXE functions intended for test and measurement of
supply systems with compatibility notes related to the reduced low voltage system.
Reduced low voltage system
functions Notes
Contunuity functions
RLOWΩ
Continuity Independent of selected supply system.
Insulation Independent of selected supply system.
Line resistance
Line resistance Resistance RL1-L2.
Prospective short circuit
current IPSC for UL1-L2 = 110 V.
Fault loop resistance
Fault loop resistance Both fault loops, R1 (L1-PE) and R2 (L2-PE).
Prospective fault current ISC1 and ISC2 for both fault loops.
Voltage, frequency Symbols modified for reduced low voltage system.
Phase rotation Three-phase system automatic detected.
RCD functions
Contact voltage UC For both posibilities, U1 (L1-PE) and U2 (L2-PE).
Trip-out time
Trip-out current
Automatic test
Maximum nominal differential current limited to 1 A.
Earth resistance Independent of selected supply system.
PE test probe Disabled.
C.3.1 Voltage
Figure C.2: Example of voltage and frequency measurements
Displayed results for single phase system:
L1-L2......Voltage between line conductors,
L1-pe......Voltage between line 1 and protective conductors,
L2-pe......Voltage between line 2 and protective conductors.
C.3.2 RCD testing
Maximum regular RCD test current is 1 A r.m.s. (1.4 A peak) and can be achieved only
when fault loop resistance is lower than 1 Ω.
Tests are carried out for both combinations (L1-PE and L2-PE) automatically.
Each individual test result is accompanied with appropriate indication.
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