Atec Megger-DET20C - Manual (Page 2)

ELECTRICAL SPECIFICATIONS
Ground Resistance Resolution Accuracy 1
Range 2
0.025 - 0.25 Ω 0.002 Ω ± 1.5% ± 0.05 Ω
0.25 - 9.999 Ω 0.02 Ω ± 1.5% ± 0.1 Ω
10 - 99.99 Ω 0.04 Ω ± 2.0% ± 0.3 Ω
100 - 199.9 Ω 0.4 Ω ± 3.0% ± 1.0 Ω
200 - 400 Ω 2 Ω ± 5.0% ± 5
400 - 600 Ω 5 Ω ± 10% ± 10 Ω
600 - 1550 Ω 20 Ω ± 20%
1 Loop resistance non-inductive, external field <50 A/m,
external electrical field <1 V/m, conductor centred in jaws.
2 Resistance measurement frequency 1.667KHz
Alarm Type Range Resolution
High Alarm 0 - 1550 Ω 1 Ω
Low Alarm 0 - 1550 Ω 1 Ω
Leakage Current Resolution Accuracy
Range 3
0.200 – 1.000 mA 0.001 mA ± 2.0% ± 0.05 mA
1.00 – 10.00 mA 0.01 mA ± 2.0% ± 0.03 mA
10.0 – 100.0 mA 0.1 mA ± 2.0% ± 0.3 mA
100 – 1000 mA 1 mA ± 2.0% ± 3 mA
0.20 – 35 A 0.01 A ± 2.0% ± 0.03 A
3 Auto range, 50/60Hz, true RMS to crest factor <3.5
GENERAL SPECIFICATION
Conductor size ..................................35mm Ø approx
Battery type ......................................9V IEC 6 LR61 alkaline
Display type ......................................4 digits 9999 counts LCD
Range selection ................................Automatic within function
Overload indication ..........................OL
Power consumption..........................40 mA
Battery life ........................................3000 measurements approx
Auto power down ............................5 minutes approx
Sampling time ..................................0.5 seconds
Operating temperature ....................0 to 50º C
Storage temperature..........................-20º C to 60º C
Operating humidity ..........................Less than 85% RH
Storage humidity ..............................Less than 75% RH
Dimensions........................................276 L X 100 W X 47 H (mm)
Weight................................................750g (1.65lbs)
Data logging capacity DET10C ........116 records
Data logging capacity DET20C ........8180 records
DET10C DET20C
Earth/Ground Resistance & Leakage Current Clamp Testers
FEATURES AND BENEFITS
I Easy and fast clamp-on operation. No need for cables
or auxiliary rods/stakes.
I Large LCD display screen that can be read in bright
sunlight.
I Measures ground resistance from 0.025
Ω
to 1550
Ω
.
I Direct reading of continuity and ground loop resistance.
I Measures ground leakage or phase current from
0.2mA to 35A.
I Large jaw opening to accommodate a variety of
conductors.
I Indication of high noise content that may affect
readings.
I Lightweight...only 750g (1.65lbs), yet exceptionally
rugged for regular field use.
I Hold function for difficult to reach installations.
I Auto-off to save on battery power.
I Configure high and low alarms with audible indication
for fast field checks.
I On board storage of test results (up to 8180 records).
I Calibration check loop to insure proper operation.
I Rugged, yet lightweight storage case contains complete
testing kit.
I USB interface for download of test data for later analysis
(DET20C).
The DET20C instrument is shown being used to test a pole ground.