Fluke 789 - AC Current Measurement Specifications; DC Current Measurement Specifications

789/787B
Users Manual
40
AC Current Measurement
Range
45 Hz to 2 kHz
Resolution Accuracy, ±(% of Reading + Counts)
Typical Burden
Voltage
1.000 A (Note) 0.001 A 1 % + 2 1.5 V/A
Note: 440 mA continuous, 1 A 30 seconds maximum
Specifications are valid from 5 % to 100 % of amplitude range.
AC conversion: true rms
Maximum crest factor: 3 (between 50 and 60 Hz)
For non-sinusoidal waveforms, add
± ( 2 % reading + 2 % f.s.) typical
Overload protection 440 mA, 1000 V fast-blow fuse
DC Current Measurement
Range Resolution Accuracy, ±(% of Reading + Counts)
Typical Burden
Voltage
30.000 mA 0.001 mA 0.05 % + 2 14 mV/mA
1.000 A (Note) 0.001 A 0.2 % + 2 1.5 V/A
Note: 440 mA continuous, 1 A 30 seconds maximum
Overload protection: 440 mA, 1000 V fast-blow fuse