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External Voltage Measurements
Measuring Method: Digital by sampling at 4028Hz, low pass filter, FFT.
The frequency of the strongest spectral component is displayed.
Measuring Rate: Display updates approx. 3 times per s.
Signal Conversion: TRMS or sum of all harmonics 10 to 450Hz during selective
earth measurements with clamp or by GroundFlex
Measured Range
Resolution
Intrinsic error
Operating error
Input impedance Z
H-E
Operating frequency
3.2.3
Current Measurements
External Current Measurements
Measuring Method: Digital by sampling at 4028Hz, low pass filter, FFT.
Measuring Rate: Display updates approx. 3 times per s.
Signal Conversion: Sum of all harmonics 10 to 450Hz
With Current Probe SR182
Measurement Range
Resolution
Frequency range
Operating error from
0.5 to 100mA
Operating error from
0.1 to 40.0A
16
, Z
(Z
)
S-E
S-ES
0.00 to
9.99mA
0.01mA
16 to 49Hz
± (10% + 2cts)
> 20%
®
0.00 to 9.99V
0.01V
± (2% + 1ct)
± (5% + 1ct)
DC and 15 to 440Hz
10.0 to
100 to
99.9mA
999mA
0.1mA
1mA
50 to 99Hz
± (5% + 2cts)
± (10% + 2cts)
Ground Resistance Tester Model 6472
sensors.
10 to 65V
0.1V
1.2MΩ
1.00 to
9.99A
0.01A
100 to 400Hz
± (3% + 2cts)
± (5% + 2cts)
10 to
40A
0.1A
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