Fluke 1750 Fluke 1750 Calibration Manual - Page 13

Power Recorder Specifications for the System: Recorder and Power Analyze Software Measurement Accuracy 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 Accuracy Same as rms voltage Voltage Dropout (Interruption) Measurement Type Same as Voltage Dip Power and PF Measurement Power Measurement Method Calculated per IEEE1459 for best performance when distortions exist 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 0.2 % reading ± 0.1 % full scale + current sensor accuracy 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 ± 0.1 % full scale + current sensor accuracy Power Factor Measurement Range 1.000 (leading) to 0.000 to +1.000 (lagging) Measurement Accuracy 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 0.000 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 0.5 to 49.5th order Measurement Method IEC 61000-4-7 External Interface Specifications LAN Interface Connector RJ-45 Speed and Type 10/100 Base-T, auto MDIX Communications Protocol TCP/IP over Ethernet Wireless Controller Interface Connection wireless (2.4 GHz radio) Speed up to 700 kbit/second Communications Protocol Bluetooth SPP 5