Tabla De Contenido - Amprobe GP-2A Manual De Uso

CoNTENTS
1. SAFETY PRECAUTIoNS AND PRoCEDURES .................................................................................... 2
1.1 Preliminary instructions ............................................................................................................. 2
1.2 During use .................................................................................................................................. 3
1.3After use ...................................................................................................................................... 3
1.4 Definition of measurement category (Overvoltage) ............................................................... 3
2. GENERAL DESCRIPTIoN ................................................................................................................... 4
2.1 Instrument description............................................................................................................... 4
3. PREPARING THE INSTRUMENT . ........................................................................................................ 4
3.1 Initial check................................................................................................................................. 4
3.2 Power supply .............................................................................................................................. 4
3.3 Calibration .................................................................................................................................. 4
3.4 Storage........................................................................................................................................ 4
4. WoRKING INSTRUCTIoNS ............................................................................................................... 5
4.1 Instrument description............................................................................................................... 5
4.2 Measuring accessories description ............................................................................................ 6
4.2.1 Switching on . ..................................................................................................................... 6
4.2.2 Auto power off ................................................................................................................. 6
4.3 EARTH 3W - Three wire earth resistance measurement ......................................................... 7
4.4 EARTH 2W - Two wire earth resistance measurement ............................................................ 9
4.5 r - Ground resistivity measurement ........................................................................................ 11
4.5.1 Anomalous measuring applications - all modes ........................................................... 14
5. MANAGEMENT oF SToRED DATA ................................................................................................ 17
5.1 How to save a measurement ................................................................................................... 17
5.2 How to cancel one or several measurements . ........................................................................ 17
5.3 How to recall a measurement ................................................................................................. 18
6. INSTRUMENT RESET AND DEFAULT PARAMETERS....................................................................... 19
7. NSTRUMENT CoNNECTIoN To PC ................................................................................................ 19
8. MAINTENANCE ............................................................................................................................... 20
8.1 General ..................................................................................................................................... 20
8.2 Battery replacement ................................................................................................................ 20
8.3 Instrument cleaning ................................................................................................................. 20
8.4 End of life ................................................................................................................................. 20
9. TECHNICAL SPECIFICATIoNS . ......................................................................................................... 21
9.1 Definitions ................................................................................................................................ 21
9.2 Technical features .................................................................................................................... 22
9.2.1 Safety standards .............................................................................................................. 23
9.2.2 General features.............................................................................................................. 23
9.3 Environment ............................................................................................................................. 23
9.3.1 Operating environmental conditions ............................................................................ 23
9.3.2 EMC . ................................................................................................................................. 23
10. PRACTICAL REPoRTS FoR ELECTRICAL TESTS ............................................................................ 24
10.1 Earth resistance in tt systems................................................................................................. 24
10.2 Earth resistance, voltaamperemetric method ...................................................................... 24
10.2.1 Creating cables extensions ......................................................................................... 24
10.2.2 Method for small-sized earth rods . ............................................................................ 25
10.2.3 Method for large-sized earth rods . ............................................................................ 25
10.3 Ground resistivity ................................................................................................................... 26
10.3.1 Approximate evaluation of intentional rods' contribution ..................................... 27
GP-2A Earth Ground Tester
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