Fluke 1750 Calibration Manual

1750
Calibration Manual
4
Synchronization and Sampling
PLL-Synchronization Source........................... The PLL synchronizes to the A-N voltage for wye power types, and to
the A-B voltage for delta power types. All listed power types can be
characterized as either wye or delta.
PLL Lock Range................................................ 42.5 to 69 Hz
Sampling Frequency ........................................ Voltage and current: 256 samples/cycle
Inter-harmonics per IEC61000-4-7: 2560 samples / 10 cycles (50 Hz),
3072 samples/12 cycles (60 Hz)
Transient Voltage: 5 MHz
A/D Resolution .................................................. Voltage and current: 24 bits
Transient voltage: 14 bits
Voltage and Current Measurements
Voltage Measurement Range........................... AC voltage: 1000 V rms ± 10 % Overrange
DC voltage: ± 1000 V + 10 % Overrange
Voltage Crest Factor......................................... 3 or less
Voltage Input Impedance ................................. 2 MΩ
Current Measurement Range........................... Depends on current probe used
Current Crest Factor......................................... 4 or less
Current Input Characteristics .......................... 2 V rms = full scale, 1 MΩ Input Impedance for ferro CTs, low
impedance for Flexi-CTs
Voltage and Current Measurement Accuracy
RMS Voltage
Measurement Type............................................. True rms calculated continuously: every cycle, every 1/2 cycle, and
every 10 or 12 cycles at 50 or 60 Hz respectively, as required by IEC
61000-4-30.
Measurement Uncertainty................................... AC: ± 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.
RMS Current
Measurement Type............................................. True rms calculated continuously: every cycle, every 1/2 cycle, and
every 10 or 12 cycles at 50 or 60 Hz respectively, as required by
standards
Measurement Uncertainty................................... ± (0.1 % full scale + 0.5 % reading + current sensor accuracy, valid for
5 % to 100 % of current sensor range
Current Accuracy ................................................ Ferromagnetic Clamps
± (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
Transient Voltage (Impulse)
Measurement Type............................................. Waveshape sampling, not peak detect
Full Scale ............................................................ 8000 V pk
Sample Resolution.............................................. 200 nS
Measurement Uncertainty................................... ± 5 % reading ± 20 V (test parameters: 1000 V dc, 1000 V rms,
100 kHz)
Dip (Sag) and Swell Measurements
Voltage Swell (rms swell)
Measurement Type............................................. True rms (one cycle calculation by overlapping each half cycle)
(voltage between lines is measured for 3P3W lines and phase voltage
is measured for 3P4W lines)
Displayed Data ................................................... Amplitude and duration of swell

Fluke 1750 Specifications

General

Type	Power Quality Analyzer
Frequency Measurement Range	42.5 Hz to 69 Hz
Safety Rating	CAT IV 600 V, CAT III 1000 V
Accuracy	±0.1% of reading
Harmonics	Up to 50th harmonic
Communication	Ethernet, USB
Power Supply	100 V to 240 V AC
Channels	4 voltage, 4 current
Battery Backup	Yes, internal battery
Measurement Parameters	Voltage, Current, Power, Harmonics, Flicker
Data Logging Interval	1 second to 60 minutes
Battery Life	45 minutes (UPS)
Voltage Measurement Range	1 to 1000 V (phase to neutral)
Operating Temperature	-10 to 50 °C