Megger DET2/2, User Manual

Page: 3 / 116

Safety Warnings 2
Contents 3
General Description 4
Applications 5
Features and Controls 6
Initial Configuration 7
Setting up Test spikes 8
Earth Testing Safety Precautions 9
Operation
General Testing Procedure 11
Test condition adjustments 11
Display messages 12
Error messages 13
Battery charging 15
Measuring Techniques
Testing earth electrodes
Fall-of-Potential method 17
The 61,8% Rule 18
The Slope method 20
Method using ‘Dead’ earth 22
BS7671 (16th Edition IEE Wiring
Regulations) Requirements
23
Other methods 23
Determining ‘Touch’ potential 24
Determining ‘Step’ potential 25
Measuring soil resistivity -
Typical variations in soil resistivity 26
Line traverse 27
Calculation of Resistivity 27
Continuity Testing 29
Specification 30
Accessories 33
Chart for use with Slope method 35
Repair and Warranty 40
Guide de l’utilisateur 43
Gebrauchsanleitung 67
Guía del Usuario 90
Symbols used on the instrument
Caution: Refer to accompanying notes.
Equipment protected throughout by
Double Insulation (Class
II
)
Equipment complies with EU Directives
Contents Guide de l’utilisateur p43 Gebrauchsanleitung s67 Guía del usuario p91
3