Megger DET24C Digital Earth Clamp - with PC Interface

Elliptical clamp shape improves access to earth cables and straps up to 50 mm
Low maintenance flat jaw interface
Measures ground resistance from 0.05 © to 1500 ©
Measures true RMS ground leakage current from 0.5 mA rms to 35 A rms
Memory to record and view results
Automatic self calibration
Auto ranging
High and low alarms
Real time clock for date and time stamping of results
CAT IV 600 V safety rating
Backlit LCD display
IrDA USB interface to PC
Advanced memory functionality with download
Megger PowerDB/ PowerDB Lite compatible

The Megger DET24C represents a new generation of earth ground clamp-on resistance testers. This instrument induces a test current into earth systems and measures ground resistance in multi ground installations without needing to disconnect the ground. It offers market leading access, advanced features, simple operation and CAT IV 600 V safety protection

Designed with flat core ends they prevent dirt build up, ensuring measurement integrity and improved reliability over products with interlocking teeth. Other enhancements over current generation products include improved accuracy and up to 300% increase in battery life. In electrically noisy environments the built-in filter function offers increased noise immunity.

The DET24C supports a download of results via IrDA-to-USB link into PowerDB and Power DB Lite, Megger’ s acceptance and maintenance test data management software. Stored data is indexed using a sequential serial number together with a time and date stamp for each record.

Specifications DET24C
Resistance Range Resolution Intrinsic certainty
0.05 © to 0.99 © 0.01 © ± 1.5% ± 0.05 ©
1.00 © to 9.99 © 0.01 © ± 1.5% ± 0.1©
10.0 © to 99.9 © 0.1 © ± 2% ± 0.5 ©
100.0 © to 199.9 © 0.1 © ± 5% ± 1 ©
200 © to 400 © 1 © ± 6% ± 5 ©
400 © to 600 © 1 © ± 10% ± 10 ©
600 © to 1200 © 10 © ± 20%
1200 © to 1500 © 10 © ± 35%
Alarm settings Alarm type Range Resolution
Threshold 1 1 © to 1500 © 1 ©
Threshold 2 1 © to 1500 © 1 ©
Current measurements
( RMS) Range Resolution Intrinsic Certainty
0.5 mA to 0.99 mA 0.01 mA ± 2% ± 0.05 mA
1.00 mA to 9.99 mA 0.01 mA ± 2% ± 0.05 mA
10.0 mA to 99.9 mA 0.1 mA ± 2% ± 0.1 mA
100 mA to 999 mA 1 mA ± 2% ± 1 mA
1.00 A to 9.99 A 0.01 A ± 2% ± 0.01 A
10.0 A to 35.0 A 0.1 A ± 2% ± 0.1 A
Max. jaw opening 39 mm
Max. jaw inner dimensions 39 mm x 55 mm
Display type 4 + 6 digit with backlight
Battery type 4 x 1.5 V IEC LR6/ AA alkaline
Auto power down 300 s ( reset by jaw action or button press)
Data logging 2 k records
Data download Opto-coupled IrDA-USB interface
Range selection Automatic within each mode
Sample time < 1 s
Hold function Yes with visual indicator
Alarm function Yes with visual indicator
Warning buzzer Yes
Operating temp./ humidity -20 ° C to + 50 ° C, < 85% RH
Storage temp./ humidity -40 ° C to + 60 ° C, < 75% RH
Weight 985 g
Dimensions 248 mm ( l) x 114 mm ( w) x 49 mm ( h)
IP rating IP30 with jaws closed
Performance IEC 61557-5
IEC 61557-13 Class 1
Safety EN 61010-2-032
CATIV 600 V
Pollution degree 2
EMC Class B Compliant, IEC 61326, BSEN 61326