Megger Ground Resistance Test Equipment

Selection Guide

Selection Guide for DET3
Model	DET3TD	DET3TA	DET3TC
2-wire Resistance
3-wire Resistance
4-wire Resistance
ART (Attached Rod Technique)
Resistance Range	0.01 to 2000 2% ± 3d	0.01 to 2000 2.5% of scale length	0.01 to 2000 2% ± 3d
Ground Voltage Range	0 to 100 V
Ground Current Range (with optional current measuring clamp)			0.5mA to 19.9A
Display	Digital	Analog	Digital

Selection Guide for DET4
Model	DET4TD2	DET4TR2	DET4TC2	DET4TCR2
Earth Tests
Resistance max. (2,3 and 4 pole)	0-20kΩ	0-20kΩ	0-200kΩ	0-200kΩ
Max Resolution	0.01Ω	0.01Ω	0.01Ω	0.01Ω
2-Pole Resistance AC
P or C Spike resistance high indication
Max spike resistance	100kΩ	100kΩ	200kΩ	200kΩ
Selective (ART) & Stakeless ability
Ground Current measurement
Noise interference indicator
Terminal links for 2 or 3 pole tests	NO	NO	NO	NO
Ground Voltage measurement
Wenner - calculation pf ρ (rho)	PC Software	PC Software	PC Software	PC Software
Schlumburger - calculation pf ρ (rho)	PC Software	PC Software	PC Software	PC Software
Output
Voltage	25 / 50V	25 / 50V	25 / 50V	25 / 50V
Actual test current/s specified	4.5mA, 0.45mA	4.5mA, 0.45mA	4.5mA, 0.45mA, 0.045mA	4.5mA, 0.45mA, 0.045mA
Test frequency	128Hz	128Hz	94, 105, 111, 128Hz	94, 105, 111, 128Hz
Supply
Rechargeable
Charge from vehicle battery (12V)
Battery life - number of ground tests	700 tests	700 tests	700 tests	700 tests
Battery status with remaining life
Other features
Back light on display
IP Rating	IP54	IP54	IP54	IP54
High noise rejection	40V pk	40V pk	40V pk	40V pk
Installation Cat. Rating	CAT IV 100V	CAT IV 100V	CAT IV 100V	CAT IV 100V
Warranty	3 year	3 year	3 year	3 year
Calibration Certificate Supplied
Software Supplied