3pole earth resistance  
Test voltage  20, 48V AC 
Test frequency  94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current  250mA 
Test time  26 seconds 
Probe resistance Rs  <100 kΩ 
Auxiliary earth resistance Rh  <100 kΩ 
Resolution  0.001 Ω 
Measuring range Re  0.02 Ω ... 300 kΩ 
Accuracy 
± (5% + 10 digits) 
Ust  < 24V 
Fst  16 ... 400 Hz 
The accuracy is ensured in an environment of 0 ... 28°C / 32 ... 82°F, < 80% RH (noncondensing). Response time < 15 seconds (Time required to reach the specified accuracy, after the start of the measurement with the average function switched off.) 

4pole grounding resistor  
Test voltage  20, 48V AC 
Test frequency 
94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current  250mA 
Test time  30 seconds 
Probe resistance Rs  < 100 kΩ 
Auxiliary earth resistance Rh  < 100 kΩ 
Resolution  0.001 Ω 
Measuring range Re  0.02 Ω ... 300 kΩ 
Accuracy  ± (5% + 10 digits) 
Ust  < 24V 
Fst  16 ... 400 Hz 
The accuracy is ensured in an environment of 0 ... 28°C / 32 ... 82°F, < 80% RH (noncondensing). Response time < 25 seconds (Time required to reach the specified accuracy, after the start of the measurement with the average function switched off.) 

3pole earth resistance with current clamp  
Test voltage  20, 48V AC 
Test frequency  94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current  250mA 
Test time  26 seconds 
Probe resistance Rs 
< 100 kΩ 
Auxiliary earth resistance Rh  < 100 kΩ 
Resolution  0.001 Ω 
Measuring range Re  0.02 Ω ... 20 kΩ 
Accuracy  ± (5% + 10 digits) 
Ust  < 24V 
Fst  16 ... 400 Hz 
The accuracy is ensured in an environment of 0 ... 28°C / 32 ... 82°F, < 80% RH (noncondensing). Response time < 25 seconds (Time required to reach the specified accuracy, after the measurement has started with the average function switched off.) If the current on the current probe is too low, the measurement can be aborted. 

4pole earth resistance with current clamp  
Test voltage  20, 48V AC 
Test frequency  94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current  250mA 
Test time  26 seconds 
Probe resistance Rs  < 100 kΩ 
Auxiliary earth resistance Rh  < 100 kΩ 
Resolution  0.001 Ω 
Measuring range Re  0.02 Ω ... 20 kΩ 
Accuracy  ± (5% + 10 digits) 
Ust  < 24V 
Fst  16 ... 400 Hz 
The accuracy is ensured in an environment of 0 ... 28°C / 32 ... 82°F, < 80% RH (noncondensing). Response time < 25 seconds (Time required to reach the specified accuracy, after the measurement has started with the average function switched off.) If the current on the current probe is too low, the measurement can be aborted. 

Grounding resistor only with current clamps  
Test voltage  48V AC 
Test frequency  94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current 
250mA 
Test time  26 seconds 
Measuring range Re  0.02 Ω ... 150 Ω 
Resolution  0.001 Ω 
Accuracy  ± (5% + 10 digits) 
Ust  < 24V 
Fst  16 ... 400 Hz 
The accuracy is ensured in an environment of 0 ... 28°C / 32 ... 82°F, < 80% RH (noncondensing). Response time < 25 seconds (Time required to reach the specified accuracy, after the measurement has started with the average function switched off.) If the current on the current probe is too low, the measurement can be aborted. 

Soil resistance (removal resistance)  
Test voltage  20, 48V AC 
Test frequency  94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current  250mA 
Test time  26 seconds 
Resolution 
0.001 Ω * m 
Measuring range Re  0.02 Ω ... 1000 kΩ * m 
Accuracy  ± (5% + 10 digits) 
2pole resistance measurement (AC)  
Test voltage  20V AC 
Test frequency  94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current  250mA 
Test time  26 seconds 
Measuring range Re  0.02 Ω ... 300 kΩ 
Resolution  0.001 Ω 
Accuracy  ± (5% + 10 digits) 
Ust  < 24V 
Fst  16 ... 400 Hz 
2pole resistance measurement (DC)  
Test voltage  20V DC 
Short circuit current  250mA 
Test time 
26 seconds 
Measuring range Re  0.02 ... 3 kΩ 
Resolution  0.001 Ω 
Accuracy  ± (5% + 10 digits) 
Ust  < 3V 
Fst  16 ... 400 Hz 
4pole resistance measurement (DC)  
Test voltage  20V DC 
Short circuit current  250mA 
Test time  26 seconds 
Measuring range Re  0.02 Ω ... 3 kΩ 
Resolution  0.001 Ω 
Accuracy  ± (5% + 10 digits) 
Ust  < 3V 
Fst  16 ... 400 Hz 
Line compensation  
Test voltage  20, 48V AC 
Test frequency  94 Hz, 105 Hz, 111 Hz, 128 Hz, AFC 
Short circuit current  250mA 
Test time  26 seconds 
Resolution 
0.001 Ω 
Measuring range Re  0.02 Ω ... 30 Ω 
Accuracy  ± (3% + 10 digits) 
Ust  < 24V 
Fst  16 ... 400 Hz 
Interference voltage  
Measuring range  ± 50V DC 
1 ... 50V AC  
Resolution  0.1V 
Accuracy  ± (5% + 5 digits) 
Interference current  
Measuring range  20mA ... 2 A 
Resolution  1mA 
Accuracy  ± (5% + 5 digits) 
Interference frequency  
Measuring range  16 ... 400 Hz 
Resolution  1 Hz 
Accuracy  ± (1% + 10 digits) 
Other specifications  
Data storage  100 readings 
Operating conditions  0 ... 40°C / 32 ... 104°F, < 80% RH (noncondensing) 
Charge ambient conditions to the battery  10 ... 40°C / 50 ... 104°F, < 80% rh (noncondensing) 
Storage conditions  10 ... 50°C / 50 ... 122°F, < 90% rh (noncondensing) 
Storage conditions for the battery  20 ... 30°C / 4 ... 86°F, < 80% rh (noncondensing) 
Storage height  < 12,000 m / 39,370 ft 
Operating altitude  < 2,000 m / 6,561 ft 
Clamp diameter  51 mm 
Display  Backlit LCD, 9,999 digits 
Display measuring range exceeded  > LIMIT 
Display below measuring range   
Measuring frequency earthing resistance / leakage current  1 Hz (If the average value function is activated: one value every four seconds) 
Measuring frequency voltage measurement  2 Hz 
Measuring frequency interference voltage  4 Hz 
Measuring frequency interference frequency  1 Hz 
Measuring frequency interference current  1 Hz 
interfaces  Measuring connection: E, ES, S, H, pliers connection USBB, charging connection 
Power supply batteries  6 x 1.5V D LR14 batteries 
Power supply battery  1 x 7.2V nickelmetal hydride battery pack 
Power supply power supply  Primary: 100 ... 240V, 50 ... 60 Hz 
Secondary: 12V, 3A  
Max. Power consumption with power supply  15V A 
Max. Power consumption with battery or rechargeable battery  6V A 
Running time in battery mode  About 5 hours 
Running time in the battery  About 9 hours (without backlight) 
Maximum input voltage  
Maximum input voltage relative to earth  300V rms (CAT III) 
Insulation thickness  6880V AC: 15 seconds 
Overvoltage protection  250V AC between the connections 
Dimensions  260 x 125 x 280 mm / 10.2 x 4.9 x 11 in 
Weight  About 2.5 kg / 5.5 lbs 
Standardize  Safety: EN610101: 2001, EN61010031: 2002 
Pollution degree 2, CAT III 300V,  
EMC: EN6100032: 2000, IEC613261: 1997 A  