Table Of Contents - Sonel MPI-525 User Manual

1 Safety ................................................................................................................ 5
2 Menu .................................................................................................................. 6
2.1 Wireless transmission .............................................................................................. 6
2.2 Settings of measurements ........................................................................................ 6
2.2.1 Network voltage and frequency ...................................................................................... 7
2.2.2 Additional results in insulation resistance measurement ................................................. 7
2.2.3 Main result of short circuit loop impedance measurement .............................................. 8
2.2.4 Measurement settings .................................................................................................... 8
2.2.5 Cell autoincrementing .................................................................................................... 8
2.3 Settings of the meter ................................................................................................ 9
2.3.1 LCD contrast .................................................................................................................. 9
2.3.2 LCD backlight time ....................................................................................................... 10
2.3.3 Auto-OFF settings ........................................................................................................ 10
2.3.4 Date and time .............................................................................................................. 10
2.3.5 Factory (default) settings .............................................................................................. 11
2.3.6 Program update ........................................................................................................... 11
2.4 Language selection ................................................................................................ 11
2.5 Information about manufacturer ............................................................................. 11
3 Measurements ................................................................................................ 12
3.1 Measurement of alternating voltage and frequency ............................................... 12
3.2 Checking correctness of PE (protective earth) connections ................................... 12
3.3 Measurement of short circuit loop parameters ....................................................... 13
3.3.1 Measurement of short circuit loop parameters in L-N and L-L circuit ............................ 13
3.3.2 Measurement of short circuit loop parameters in L-PE circuit ....................................... 16
3.3.3 Measurement of short circuit loop impedance in L-PE circuit protected with residual
current device (RCD) ................................................................................................... 18
3.3.4 Prospective short-circuit current ................................................................................... 19
3.4 Measurement of resistance-to-earth ...................................................................... 20
3.5 Measurement of RCD parameters ......................................................................... 23
3.5.1 Measurement of RCD trip current ................................................................................. 23
3.5.2 Measurement of RCD trip time ..................................................................................... 25
3.5.3 Automatic measurement of RCD parameters ............................................................... 27
3.6 Measurement of insulation resistance .................................................................... 31
3.6.1 Double-lead measurement ........................................................................................... 31
3.6.2 Measurements with AutoISO-2500 adapter .................................................................. 33
3.7 Low-voltage measurement of resistance ................................................................ 36
3.7.1 Measurement of resistance of protective conductors and equipotential bonding with
±200 mA current .......................................................................................................... 36
3.7.2 Measurement of resistance .......................................................................................... 38
3.7.3 Calibration of test leads ................................................................................................ 39
3.8 Checking sequence of phases ............................................................................... 41
4 Memory of measurement result data ........................................................... 42
4.1 Recording measurement result data in the memory ............................................... 42
4.2 Viewing memory data ............................................................................................. 44
4.3 Deleting memory data ............................................................................................ 46
5 Data transmission .......................................................................................... 48
5.1 Computer connection accessories ......................................................................... 48
CONTENTS
MPI-525 - USER MANUAL
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