Voltage And Current Measurement Accuracy; Transient Voltage (Impulse); Dip (Sag) And Swell Measurements; Power And Pf Measurement - Fluke 1750 Operator's Manual

Voltage and Current Measurement Accuracy

RMS Voltage
Measurement Type ............................................. True rms calculated continuously: every cycle, every 1/2 cycle, and
Measurement Uncertainty................................... AC:
RMS Current
Measurement Type ............................................. True rms calculated continuously: every cycle, every 1/2 cycle, and
Measurement Uncertainty................................... (0.1 % full scale + 0.5 % reading + current sensor accuracy, valid for
Current Accuracy ................................................ Ferromagnetic Clamps

Transient Voltage (Impulse)

Measurement Type ............................................. Waveshape sampling, not peak detect
Full Scale ............................................................ 8000 V pk
Sample Resolution.............................................. 200 nS
Measurement Uncertainty................................... 5 % reading

Dip (Sag) and Swell Measurements

Voltage Swell (rms swell)
Measurement Type ............................................. True rms (one cycle calculation by overlapping each half cycle)
Displayed Data ................................................... Amplitude and duration of swell
Measurement Accuracy ...................................... Same as rms voltage
Voltage Dip (RMS sag)
Measurement Type ............................................. True rms (one cycle calculation by overlapping each half cycle)
Displayed Data ................................................... Amplitude and duration of dip or interruption
Measurement Accuracy ...................................... Same as rms voltage
Voltage Dropout (Interruption)
Measurement Type ............................................. Same as Voltage Dip

Power and PF Measurement

Calculated per IEEE1459 for best performance when distortions exist
Measurement Type ............................................. True rms calculated continuously: every cycle, and every 10 or 12
Measurement Accuracy ...................................... 0.2 % reading
Frequency
Measurement Range .......................................... 42.5 to 69 Hz
Measurement Source ......................................... Same as PLL synchronization source
Measurement Accuracy ...................................... 10 mHz (10 to 110 % of range, with sine wave)
Reactive Power
Accuracy ............................................................. 0.2% reading
Specifications for the System: Recorder and Power Analyze Software
every 10 or 12 cycles at 50 or 60 Hz respectively, as required by IEC
61000-4-30.
0.2 % reading 0.1 % full scale above 50 V rms
DC: 0.5 % reading 0.2 % full scale above 50 V dc
If the ac component of a dc signal is below 40 V rms, the dc
uncertainty specification may have an offset.
every 10 or 12 cycles at 50 or 60 Hz respectively, as required by
standards
5 % to 100 % of current sensor range
(0.1 % full scale + 0.2 % reading + current sensor accuracy), valid for
5 % to 100 % of current sensor range
Flexible Current Probes
(0.1 % full scale + 0.5 % reading + current sensor accuracy), valid for
5 % to 100 % of current sensor range
20 V (test parameters: 1000 V dc, 1000 V rms,
100 kHz)
(voltage between lines is measured for 3P3W lines and phase voltage
is measured for 3P4W lines)
(voltage between lines is measured for 3P3W lines and phase voltage
is measured for 3P4W lines)
cycles at 50 or 60 Hz respectively, as required by standards
0.1 % full scale + current sensor accuracy
0.1 % full scale + current sensor accuracy
Power Recorder
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