Clamp-on Ground Resistance Tester Model 6417
43
9. SPECIFICATIONS
9.1 Reference Conditions
Influencing Parameters
Reference Values
Ambient temperature
73°F ± 5°F (23°C ± 3°C)
Relative humidity
50% RH ±10%
Battery voltage
6V ±0.2V
Magnetic field
< 40A/m DC (no AC field)
Electric field
< 1V/m
Operating position
Clamp horizontal
Position of the conductor in the clamp
Centered
Measurement environment
No adjacent conductors carrying current
within 10cm
Proximity to magnetic mass
> 10cm
Loop resistance
Non-inductive resistance
(20
W
for the voltage measurement)
Measured current, sinusoidal frequency
Frequency 50/60Hz
Level of distortion < 0.5%
Inferior current in loop resistance
measurement
Zero for the resistance and inductance
measurements
< 3.75A for the voltage measurement
9.2 Electrical
9.2.1 Loop Resistance Measurement
Measurement Range
Resolution
Accuracy
0.010 to 0.099
W
0.001
W
±1.5% ±0.01
W
0.10 to 0.99
W
0.01
W
±1.5% ±0.02
W
1.0 to 49.9
W
0.1
W
±1.5% ±0.1
W
50.0 to 99.5
W
0.5
W
±2% ±0.5
W
100 to 199
W
1
W
±3% ±1
W
200 to 395
W
5
W
±5% ±5
W
400 to 590
W
10
W
±10% ±10
W
600 to 1150
W
50
W
20% approx
1200 to 1500
W
50
W
25% approx
Alarm: range of threshold from 1 to 199
W
.
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