3-pole earth ground resistance, 2-pole ac resistance of a conductor, Interference voltage
Measuring rate
2 measurements/second
Battery[1]
One 9 volt alkaline (LR61)
Battery condition
LO-BAT is displayed if voltage drops below 6.5 V
Voltages
Between jacks H/C2 and E/C1:
250 Veff maximum (effective voltage)
Between jacks S/P2 and E/C1:
250 Veff maximum
Climatic class
VDE/VDI 3540 RZ (conforming to KWG as per DIN 40040, 4/87)
Temperature performance[2]
Working:
-10 °C to +50 °C (+14 °F to +122 °F)
Operating:
0 °C to +35 °C (+32 °F to +95 °F)
Storage:
-20 °C to +60 °C (+68 °F to +140 °F)
Reference:
+23 °C ± 2 °C (+73 °F ± 4 °F)
Temperature coefficient
± 0.1 % of range per degree Kelvin
Safety
IEC/EN 61010-1, 600 V CAT II, pollution degree 2
Dimensions
113 mm x 54 mm x 216 mm (4.5 in x 2.1 in x 8.5 in), including holster
Weight
850 g (1.9 lb), including standard accessories, volume approximately 600 cm3
Note:
[1]If the tester is not going to be used, or is being stored for a long period, remove the battery and store separately from the tester to avoid damage from battery leakage.
Note:
[2]The four temperature ranges for the tester exists to satisfy European Standards requirements; the instrument can be used over the full working temperature range by using the temperature coefficient to calculate accuracy at the ambient temperature of use.
Electrical specifications
Maximum deviations:
E1 Influence factor
Position
E1 Deviation influence
0 %
E2 Influence factor
Supply voltage
E2 Deviation influence
0 %
E3 Influence factor
Temperature E3
E3 Deviation influence
2.3 %
E4 Influence factor
Serial interference voltage (20 V)
E4 Deviation influence
0.6 %
E5 Influence factor
Probe- and auxiliary probe resistance
E5 Deviation influence
10 %
Test voltage
3.7 kV
Protection type
IP 40; IEC/EN 60529
Electromagnetic compatibility
Emission: IEC/EN 61326 Class B
Immunity: IEC/EN 61326 Annex C
RE resistance measurement
Measuring method
Current-voltage measurement with improved cross-talk attenuation, no compensation of measuring lead resistance, with probe (3-pole) or without probe (2-pole), as per IEC/EN 61557-5
Open circuit voltage
23 to 24 V ac
Short circuit current
> 50 mA ac
Measuring frequency
128 Hz
Maximum permissible overload
250 Veff
Measuring time
8 seconds (average from when START is pressed)
Limit input
Tester retains set value even if instrument is turned off (assuming battery power supply is sufficient)
Automatic changeover of resolution
RH
< 7 kΩ
Resolution
0.01 Ω
RH
< 50 kΩ
Resolution
0.1 Ω
RH
> 50 kΩ
Resolution
1 Ω
Interference voltage display dc + ac
Vmax
30 Veff
Common mode rejection
> 80 dB at 50 Hz and 60 Hz
Ri
680 kΩ
Measuring uncertainty
< 10 % for pure ac and dc signals
Measuring range
0.15 Ω to 20 Ω
Resolution
0.01 Ω
Display range
0 to 19.99 Ω
200 Ω
Resolution
0.1 Ω
Display range
20 to 199.9 Ω
2 kΩ
Resolution
1 Ω
Display range
200 to 1999 Ω
Intrinsic uncertainty
± (6 % of measured value + 5D)
Operating uncertainty IEC 61557[1]
± (18 % of measured value + 5D)
Notes:
[1] Covers all deviations caused by influence quantities E1-E5.
If the deviation E4 caused by high probe or auxiliary probe resistance is higher than specified flashes.
Measured values are outside of the specified operating uncertainty.