The Megger DET family of test instruments offers a unique solution to the
measurement of earth or ground electrode (rod) resistance and soil
resistivity. The family has three digital variants, which support 2, 3 and 4
point (DET4TD only) testing, and one analogue version that makes
provision for 2 and 3 point measurements.
The DET3TC can use an optional current clamp (ICLAMP) to measure
electrode (rod) resistance without disconnection, leaving the installation
earthing system intact (Attached Rod Technique, ART). The DET3TC in
conjunction with the current clamp can also measure conductor current.
The DET variants have the following features:
Feature DET3TA DET3TC DET3TD DET4TD
Automatic C spike check ■■ ■
Automatic P spike check ■■ ■
Manual P spike check ■
Automatic noise check ■■ ■
Manual noise check ■
Noise rejection (40 V pk-pk) ■■■ ■
2-wire test ■■■ ■
3-wire test ■■■ ■
4-wire test ■
No disconnect testing (ART) ■
Voltmeter (ground noise
voltage measurement) ■■■ ■
INTRODUCTION GENERAL DESCRIPTION
5
Thank you for purchasing the Megger Earth Ground Electrode Tester.
For your own safety and to get the maximum benefit from your
instrument, please ensure that you read and understand the following
safety warnings and instructions before attempting to use the instruments.
This user manual describes the operation and functions of the DET series
of Earth Ground Electrode Testers:
DET3TA
DET3TC
DET3TD
DET4TD
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