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List of Figures
Figure Title Page
1. Fluke 1625 Earth/Ground Tester.................................... 2
2. Description of Functions................................................ 8
3. Display ........................................................................... 10
4. Operating Elements........................................................ 21
5. Display Elements ........................................................... 23
6. Operational Modes......................................................... 27
7. Measurement of Interference -
Voltages and Frequencies............................................... 32
8. Earthing Resistances Measurement - Method................ 33
9. 3-pole/4-pole Measurement of Earthing Resistance -
Process............................................................................ 34
10. Earth Resistance - Maximum Permissible Value........... 35
11. Measurement of Single Earth Electrode Resistances in
Mesh Operated Earthing Systems .................................. 36
12. 3-pole/4-pole Measurement of Single Earth
Electrode Resistances..................................................... 37
13. Measuring the Earthing Resistance without
Disengaging the Overhead Earth Wire........................... 40
14. Correcting Clip-on Transformer Errors.......................... 43
15. Compensation of Earth Electrode Connecting Lead...... 44
16. Measurement of Soil Resistivity .................................... 45
17. Resistance Measurement (R~) ....................................... 48
18. Resistance Measurement (RF)...................................... 49
19. Evaluation of Measured Value....................................... 50
20. Compensation of Measuring Lead Resistance ............... 51