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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
All Categories > Test Equipment > Fluke Power Quality Analyzer > Item # Fluke 43B  
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Item # Fluke 43B, Power Quality Analyzer

Fluke Power Quality Analyzer

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  • Voltage, current and power harmonics up to 51st
  • Total harmonic distortion (THD)
  • Phase angle of individual harmonics
  • Watts, power factor, displacement power factor, VA and VAR
  • Voltage and current waveforms
  • Calculates 3Ø Power on Balanced Load from 1Ø Measurement
  • Use cursors to read time and date of sags and swells.
  • Catch voltage transients and waveform distortion
  • See current at the instant of voltage events
  • Catch and save up to 40 transients
  • Correlate the cause of distortion with time and date stamps
  • 3 Year Warranty
The Fluke 43B includes a hard case, voltage and current probes, FlukeView® PC software and cable, line voltage adapter/battery charger, applications manual, power quality video and user’s manuals.

The Fluke 43B Power Quality Analyzer performs the measurements you need to maintain power systems, troubleshoot power problems and diagnose equipment failures. All in a rugged handheld package.

Specifications · Function


Battery Life

Rechargeable Ni-Cd pack (charger included), 6 hrs typical (continuous)



5.000V-600V RMS (AC & DC)


50.00A-50.00kA RMS (AC & DC), Accuracy: ±(1%+10d)

Mains Frequency

40.0-70.0Hz, Accuracy: ±(0.5%+2d)

Watts, VAR, VA

250W-2.5MW, Accuracy: ±(4%+4d)


0.25-1.00, Accuracy: ±0.04

Sags & Swells

Voltage and Current, 4 min-16 days selectable

Transient Capture

40 ns pulse width Up to 40 transients, Select 20/50/100/200% above or below line voltage

Thrush Current

1A to 1000A, 1s to 5 min selectable


500.0ohm to 30.00Mohm, Accuracy: ±(0.6%+5d)


50.00nF to 500.0µF, Accuracy: ±(2%+10d)


Dc, ac, ac+dc, peak, peak-peak, Hz, duty cycle, phase, pulse width, crest factor
Sampling rate: 25MS/sec
Bandwidth: Voltage BW (Channel 1): 20MHz, Current BW (Channel 2): 15kHz

Screen Saves

All functions, Selection:10 screens


V/A/Hz, Power, Harmonics, ohm/Cap, Temperature, Scope, Selection: 4 min-16 days selectable parameters in each display mode


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