Fluke 1750 Fluke 1750 Three Phase Power Recorder Datasheet - Page 7

Transient voltage (impulse) Measurement type Full scale Sample resolution Measurement uncertainty Waveshape sampling 8000 V pk 200 nS ± 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 Measurement uncertainty Same as rms voltage Voltage dip (rms sag) 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 dip or interruption Measurement uncertainty Same as rms voltage Voltage dropout (interruption) Measurement type Same as voltage dip Power Measurements Calculated per IEEE1459 for best performance when distortion is present Measurement type True rms calculated continuously: every cycle, and every 10 or 12 cycles at 50 or 60 Hz respectively, as required by standards Measurement accuracy +/- (voltage uncertainty + current uncertainty + current probe uncertainty) Frequency Measurement range Measurement source Measurement accuracy Power factor 42.5 to 69 Hz Same as PLL synchronization source ± 10 mHz (10 to 110 % of range, with sine wave) Measurement range Measurement accuracy 0.000 to 1.000 ± 1 digit from the calculation of each measured value (±3 digits for total) Displacement power factor Measurement method Calculated from the phase difference between voltage fundamental and current fundamental Measurement range - 1.000 (leading) to + 1.000 (lagging) Measurement accuracy ± 0.5 % reading ± 2 % full scale ± 1 digit Voltage unbalance and phase sequence Measurement method Positive sequence voltage divided by negative sequence voltage, per IEC 61000-4-30 Harmonic voltage and current Analysis window rectangular Analysis order 1st to 50th order Measurement accuracy Voltage / Current: 1st to 20th orders: ± 0.5 % reading ± 0.2 % full scale, 21st to 50th orders: ± 1 % reading ± 0.3 % full scale (current sensor accuracy must be included for current and power) Measurement method IEC 61000-4-7 Inter-harmonic voltage and current (intermediate harmonics) Analysis window rectangular Analysis orders Measurement method 1.5 to 49.5th order IEC 61000-4-7 Voltage flicker Measurement method as per EN 61000-4-15:2003: 10 min (Pst), 2 h (Plt) 7 Fluke Corporation Fluke 1750 Three-Phase Power Recorder