AEMC instruments 6416, Руководство пользователя

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38 Clamp-on Ground Resistance Tester Model 6416
7. SPECIFICATIONS
7.1 REFERENCE CONDITIONS
Influencing Parameters
Reference Values
Ambient temperature 73 °F ± 5 °F (23 °C ± 3 °C)
Relative humidity 50 % RH ±10 %
Battery voltage 6 V ± 0.2 V
Magnetic field < 40 A/m DC (no AC field)
Electric field < 1 V/m
Operating position Clamp horizontal
Position of the conductor in
the clamp
Centered
Measurement environment
No adjacent conductors carrying current within
10 cm
Proximity to magnetic mass > 10 cm
Loop resistance
Non-inductive resistance
(20 Ω for the voltage measurement)
Measured current, sinusoidal
frequency
Frequency 50/60 Hz
Level of distortion < 0.5 %
Inferior current in loop
resistance measurement
Zero for the resistance and inductance
measurements
< 3.75 A for the voltage measurement
7.2 ELECTRICAL
7.2.1
Loop Resistance Measurement
Measurement Range
Resolution Accuracy
0.010 Ω to 0.099 Ω 0.001 Ω ±1.5 % ±0.01 Ω
0.10 Ω to 0.99 Ω 0.01 Ω ±1.5 % ±0.02 Ω
1.0 t Ω o 49.9 Ω 0.1 Ω ±1.5 % ±0.1 Ω
50.0 Ω to 99.5 Ω 0.5 Ω ±2 % ±0.5 Ω
100 Ω to 199 Ω 1 Ω ±3 % ±1 Ω
200 Ω to 395 Ω 5 Ω ±5 % ±5 Ω
400 Ω to 590 Ω 10 Ω ±10 % ±10 Ω
600 Ω to 1150 Ω 50 Ω 20 % approximately
1200 Ω to 1500 Ω 50 Ω 25 % approximately
Alarm: range of threshold from 1
Ω
to 199
Ω
.