Hioki IR5050 - Page 5

5
Contents
7.2 Input Specications, Output Specications, and
Measurement Specications ........................................... 95
Basic specications and accuracy specications ..................... 95
7.3 Insulation diagnosis functions .......................................101
7.4 Function Specications .................................................103
7.5 Specications of the Options ........................................ 110
Test leads ............................................................................... 110
Alligator clips .......................................................................... 111
Test pin set ............................................................................. 112
8 Maintenance and Service 113
8.1 Repair, Calibration, and Cleaning ................................. 113
Calibration .............................................................................. 113
Backing up your data ............................................................. 113
Cleaning ................................................................................. 114
Lithium battery........................................................................ 114
Test leads ............................................................................... 114
8.2 Troubleshooting ............................................................ 115
8.3 Messages ...................................................................... 117
8.4 System Reset ................................................................ 118
8.5 Disposing of the Instrument (Removal of Lithium
Battery) ......................................................................... 119
9 Appendix 121
9.1 Measurement Principles ...............................................121
Insulation resistance measurement .......................................121
PV insulation resistance measurement (IR5051 only) ........... 121
9.2 Reproducibility of Insulation Resistance Measurement 122
9.3 Test Voltage Characteristic Graph ................................122
9.4 Example of PI (Polarization Index) Criteria ...................123
9.5 Connecting the Insulation Resistance Tester to a Live
Line (Energized Parts) ..................................................123
9.6 Properties of Insulating Materials ..................................124
9.7 Measurement Methods for Insulation Resistance of
PV Array ........................................................................ 125
Method with P-N open............................................................125
Method with P-N short-circuited ............................................. 126
HIOKI IR5050A961-00