Sonel MPI-540 - Table of Contents

MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
2
CONTENTS
1 Security ............................................................................................................. 5
2 Main menu ........................................................................................................ 6
2.1 Meter settings........................................................................................................... 7
2.2 Measurement settings .............................................................................................. 7
2.2.1 Sub-menu Measurements ................................................................................................ 7
2.2.2 Sub-menu PV modules .................................................................................... 8
2.3 Communication ...................................................................................................... 10
2.3.1 USB communication ...................................................................................................... 10
2.3.2 Connection with an irradiance meter.............................................................. 10
2.4 Regional settings ................................................................................................... 10
3 Measurements ................................................................................................ 11
3.1 Checking the correctness of PE (protective earth) connections ............................ 12
3.2 Fault loop parameters ............................................................................................ 13
3.2.1 Fault loop parameters in the L-N and L-L circuits ........................................................... 13
3.2.2 Fault loop parameters in the L-PE circuit ....................................................................... 13
3.2.3 Fault loop impedance in L-PE circuit protected with a residual current device (RCD) .... 14
3.2.4 Measurement of fault loop impedance in IT networks .................................................... 15
3.3 Voltage drop ........................................................................................................... 16
3.4 Resistance-to-earth ................................................................................................ 17
3.4.1 Earth resistance measurement with 3-pole method (R
E
3P) ............................................ 17
3.4.2 Earth resistance measurement with 4-wire method (R
E
4P) ............................................ 18
3.4.3 Earth resistance measurement with 3-pole method with additional clamp (R
E
3P+C) ..... 19
3.4.4 Earth resistance measurement with two-clamp method (2C) ......................................... 20
3.5 Soil resistivity ......................................................................................................... 21
3.6 RCD parameters .................................................................................................... 22
3.6.1 Measurements in IT networks ........................................................................................ 23
3.7 Automatic measurements of RCD parameters....................................................... 24
3.7.1 Setting automatic measurements of RCD parameters ................................................... 24
3.7.2 Automatic measurement of RCD parameters ................................................................. 25
3.8 Insulation resistance .............................................................................................. 27
3.9 Low-voltage measurement of resistance ............................................................... 29
3.9.1 Measurement of resistance ............................................................................................ 29
3.9.2 Measurement of resistance of protective conductors and equipotential bonding
with ±200 mA current ..................................................................................................... 29
3.10 Sequence of phases .............................................................................................. 30
3.11 Motor rotation direction .......................................................................................... 31
3.12 Illuminance ............................................................................................................. 32
3.13 Resistance-to-earth (PV) ......................................................................... 32
3.14 Insulation resistance (PV) ....................................................................... 33
3.15 Continuity of connections (PV) ................................................................ 33
3.16 Open circuit DC voltage U
OC
................................................................... 34
3.17 Short circuit DC current I
SC
...................................................................... 35
3.18 Test of the inverter panel η, P, I .............................................................. 36
3.18.1 Measurement configuration............................................................................................ 37
3.18.2 Live mode ...................................................................................................................... 38
3.19 Resetting C-PV clamp ............................................................................. 39
3.20 Irradiance and temperature ..................................................................... 39