Table Of Contents - Elma Instruments iTest 7400 Manual

1 Preface ....................................................................................................................................................... 4
2 Safety instructions ...................................................................................................................................... 5
2.1 Warnings and notes ............................................................................................................................ 5
2.2 Batteries
2.3 Charging ............................................................................................................................................ 7
2.4 Precautions on charging of new battery cells or cells unused for a longer period ................................... 7
2.5 Standards applied .............................................................................................................................. 8
3 Instrument description ................................................................................................................................ 9
3.1 Front panel ......................................................................................................................................... 9
3.2 Connector panel ................................................................................................................................. 9
3.3 Back panel ....................................................................................................................................... 10
3.4 Bottom view - Information label ........................................................................................................ 11
3.5 Carrying the instrument .................................................................................................................... 11
4 Instrument operation ................................................................................................................................ 12
4.1 Symbols and messages on the instrument display ............................................................................. 12
4.2 The online voltage and output terminal monitor ................................................................................. 12
4.3 Status symbols ................................................................................................................................. 13
4.4 Sound warnings ................................................................................................................................ 13
4.5 Performing measurement ................................................................................................................. 13
4.6 Setup menu ...................................................................................................................................... 14
4.7 Help screen ...................................................................................................................................... 15
5 Measurements .......................................................................................................................................... 15
5.1 Insulation resistance ........................................................................................................................ 15
5.2 Continuity measurement .................................................................................................................. 16
5.3 Testing RCDs .................................................................................................................................... 19
5.4 Fault loop impedance and prospective fault current........................................................................... 25
5.5 Line impedance and prospective short-circuit current ....................................................................... 29
5.6 Voltage and phase rotation................................................................................................................ 31
6 Storing measurements .............................................................................................................................. 33
6.1 Overview .......................................................................................................................................... 33
6.2 Saving results ................................................................................................................................... 33
6.3 Recalling saved results ..................................................................................................................... 35
6.4 Deleting results ................................................................................................................................ 35
7 Data transfer ............................................................................................................................................. 36
7.1 MFT Records - PC software ............................................................................................................... 36
8 Maintenance............................................................................................................................................. 38
8.1 Replacing fuses ................................................................................................................................ 38
8.2 Cleaning........................................................................................................................................... 38
8.3 Periodic calibration ........................................................................................................................... 38
Elma iTest 7400 Multifunction tester
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