44
Clamp-on Ground Resistance Tester Model 6417
Measurement Frequency:
2083Hz
Frequency Selection:
Choice of 50, 60, 128, or 2083Hz for the impedance
calculation
Maximum overloads: - permanent current 100A maximum (50/60Hz)
- transient current (<5s) 200A (50/60Hz)
9.2.2 Loop Inductance Measurement
Measurement Range
Resolution
Accuracy
10 to 100
µ
H
1
µ
H
±5% ±1
µ
H
100 to 500
µ
H
1
µ
H
±3% ±1
µ
H
9.2.3 Contact Voltage (Touch Voltage)
Contact Voltage Function:
Value calculated as the product of the loop
impedance by the leakage current.
Measurement Range
Resolution
Accuracy
0.1 to 4.9V
0.1V
±5% ±0.1V
5.0 to 49.5V
0.5V
±5% ±0.5V
50.0 to 75.0V
1V
±10% ±1V
Alarm: Range of thresholds from 1V to 75V.
9.2.4 Current Measurement
Ammeter Function:
0.2 to 40A. 4000-count display.
Measurement Range
Resolution
Accuracy
0.200 to 0.999mA
1µA
±2% ±50µA
1.000 to 2.990mA
3.00 to 9.99mA
10µA
±2% ±50µA
10.00 to 29.90mA
30.0 to 99.9mA
100µA
±2% ±100µA
100.0 to 299.0mA
0.300 to 0.990A
1mA
±2% ±1mA
1.000 to 2.990A
3.00 to 39.99A
10mA
±2% ±10mA
Alarm: Range of thresholds from 1mA to 40A.
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