Megger DET5/4R Digital Ground Tester

The DET5/4R digital ground tester is a reliable instrument able to measure the ground resistance of both simple and complex electrode systems. The instrument is suitable for soil resistivity measurements which are used to establish the optimum ground electrode system design and location, to avoid expensive reworking of electrical installations.

Operation is started by pushing one of two buttons on the front panel; one for three terminal measurement and one for four terminal testing. All other functions of the instrument are completely automatic.

Features/Benefits

Simple to use, one touch operation.
Auto switch 'off' to save battery power.
Large, clear LCD display.
Noise rejection to 40 volts.
Indicators show if reading may be invalid.
Terminal shorting bars supplied.
Ground testing kits available.

DET5/4R Datasheet (PDF)
(documents are in PDF format and will open in a new window)

Specifications

Ground Resistance Ranges
(Autoranging)

20Ω Range:	0.01Ω to 19.99Ω
200Ω Range:	0.1Ω to 199.9Ω
2kΩ Range:	0.001kΩ to 1.999kΩ
20kΩ Range:	0.01kΩ to 19.99kΩ

Accuracy (at 23°C)

±2% of reading ±3digits

Maximum Service Error

±5% of reading ±3digits

Display

3½ digit LCD with Ω's, kΩ, and low battery voltage indicators. LED's for high noise, high voltage probe resistance and high current loop resistance.

Test Frequency

128Hz ±0.5Hz

Test Voltage (maximum)

50 volts peak

Test Current
(constant current within a range)

20Ω Range:	10mA AC rms
200Ω Range:	1mA AC rms
2kΩ Range:	100µA AC rms
20kΩ Range:	100µA AC rms

Flash Test

Tested to 2.3kV rms

Voltage Withstand

250V AC between any two terminals

Operating Temperature Range

-20°C to +45°C (-4°F to +113°F)

Dimensions

243mm (H) x 161mm (W) x 70mm (D)
9.4" (H) x 6" (W) x 2.75" (D)

Weight

1.27kg (2.8 lbs) approx.

Rental Inquiry Information

Reference:	DET5/4R
Description:	Megger Model DET5/4R Digital Ground Tester