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Electrical Measurements23
23-5
ACCURACY, RESOLUTION AND RANGE
Volt/Amps/Hertz Measurement Range Resolution Accuracy
Vrms(AC+DC)
Fluke 435
Fluke 434
1…600 Vrms
600…1000 Vrms
1…1000 Vrms
0.01 Vrms
0.01 Vrms
0.1 Vrms
± 0.1% of nominal
voltage
± 0.1%
± 0.5% of nominal
voltage
Vpk 1…1400 Vpk 1 V 5% of nominal voltage
Voltage Crest Factor
(CF)
1.0 ... > 2.8 0.01 ± 5%
Arms (AC+DC)
Fluke 435
Fluke 434
Fluke 434 with i400s
Fluke 435 with I430flex
0…20.00 kArms
1
0…20.00 kArms
1
0…40 / 400 Arms
30…3000 Arms
0,001…10 Arms
1
0,001…10 Arms
1
0.1 and 1 Arms
1 Arms
± 0.5% ± 5 counts
3
± 1% ± 5 counts
3
± 1% ± 5 counts
3
± 0.5% ± 20 counts
3
Apk using 1mV/A scaling 0 - 5500 Apk 1A ± 5%
A Crest Factor (CF) 1 … 10 0.01 ± 5%
Hz
5
Fluke 435 @ 50Hz
nominal
Fluke 435 @ 60Hz
nominal
Fluke 434 @ 50Hz
nominal
Fluke 434 @ 60Hz
nominal
42.500 ... 57.500 Hz
51.000 ... 69.000 Hz
42.50 ... 57.50 Hz
51.00 ... 69.00 Hz
0.001 Hz
0.001 Hz
0.01 Hz
0.01 Hz
± 0.01Hz
± 0.01Hz
± 0.01Hz
± 0.01Hz
Dips and swells Measurement Range Resolution Accuracy
Vrms½ (AC+DC)
Fluke 435
Fluke 434
0.0% ….200% of
nominal voltage
0.0% ….200% of
nominal voltage
0.1Vrms
0.1Vrms
± 0.2% of nominal
voltage
± 1% of nominal voltage
Arms½ (AC+DC)
Fluke 435
Fluke 434
Fluke 434 with i400s
Fluke 435 with i430flex
0 … 20,000 Arms
1
0 … 20,000 Arms
1
0 … 400 Arms
30 … 3000 Arms
0,001 Arms…10 Arms
0,001 Arms…10 Arms
0.1 Arms and 1 Arms
1 Arms
± 1% ± 10 counts
3
± 2% ± 10 counts
3
± 2% ± 10 counts
3
± 1% ± 20 counts
3
Threshold levels Programmable thresholds in percent of nominal voltage
Event detection based upon ½cycle rms voltages
Captures Dips, Swells Interruptions and Rapid Voltage Changes
Duration hhh,mm,ss,mmm Half cycle One cycle