Enhance AC power measurements with touch-driven dynamic views

The Keysight IntegraVision power analyzer combines accurate power measurements and touch-driven oscilloscope visualization. Within a single instrument, it delivers the dynamic views you need to see, measure, and prove the performance of your design.

  • Measure voltage, current, and power on 4 channels: DC, 1-phase AC, or 3-phase AC
  • Make more accurate power measurements: 0.05% at 50/60 Hz
  • Measure current directly: internal shunts to 50 Arms, or with external probes or transducers
  • Address multiple test scenarios with isolated inputs

How to Measure Inrush Current with an AC Power Analyzer

The Keysight power analyzer series are high-performance instruments that measure power parameters in single-phase and three-phase systems. Offering a range of features and benefits:

  • High-resolution touchscreen display that shows up to four simultaneous measurements and waveforms
  • Flexible and intuitive user interface allows users to customize the display and configure the measurement settings
  • Fast and accurate sampling rate of up to 5 M sample/second and a bandwidth of up to 2 MHz
  • Comprehensive measurement functions, including voltage, current, power, frequency, and more
  • A data logging and analysis software that enables users to record, view, and export measurement data and waveforms

Find the Model That's Right for You

Increase power conversion efficiency

Greater power conversion efficiency reduces costs. Learn how to use Keysight power meter analyzers to accurately and easily measure power conversion efficiency.

Application Note: Learn to Use a Power Analyzer to Measure Power Conversion Efficiency
Application Note: Use a Power Analyzer to Simplify Inrush Current Characterization

Characterizing Inrush Currents to Ensure Properly Sized Fuses

See how Keysight's PA2200 power meter analyzers simplify inrush current characterization to ensure fuses are property sized for inrush currents to avoid issues of blown fuses.

Frequently Asked Questions About AC Power Analyzers

A power analyzer is a multi-functional measurement instrument that analyzes the electrical power quality of direct current (DC) or alternating current (AC) systems.

A power analyzer optimizes cost and space by combining the capabilities of multiple instruments in a single package. The instruments that it can replace include:

  • Power meter: A power analyzer can measure power consumption, efficiency, and power quality.
  • Oscilloscope: A power analyzer can capture and display real-time voltage and current waveforms.
  • Digital multimeter: A power analyzer can measure instantaneous voltage and current like a multimeter.
  • Waveform generator: A power analyzer can generate arbitrary analog waveforms to simulate various electrical conditions.
  • Data logger: A power analyzer can record measurement data over time and transfer them to a computer for detailed power analysis.
  • Power supplies: Some can work like power supplies to send power to the devices under test (DUTs).
  • Electronics loads: Some power analyzers can act as electronic loads to sink current, which is useful when the device being tested is a power supply.

Both power meters and power analyzers are used to characterize power systems. However, power analyzers combine multiple instruments under one package. In a typical test setup, power meters are rarely standalone and often combined with multimeters, waveform generators, oscilloscopes, loads, and data loggers. Power analyzers pack all of them into a single instrument to enable compact, convenient, end-to-end test setups.

Power quality analyzers are categorized based on their AC/DC capabilities as:

  • DC power analyzers: They are suitable for analyzing the DC outputs of DC power supplies, DC-DC converters, and AC-DC adapters.
  • AC power analyzers: AC power analyzers characterize the outputs of AC power supplies, DC-AC converters, and AC-AC converters. Since AC signals may have DC components, AC power analyzers are typically capable of analyzing DC signals, too. Single-phase analyzers are more common, but three-phase power quality analyzers are also available to verify the overall power quality and individual phase power of three-phase devices.

Power measurements and quality analysis

Power analyzers combine the capabilities of power meters and digital multimeters. They can measure:

  • voltages (max, min, average, and peak-to-peak) with high accuracy
  • current, using current probes such as current transducers, AC/DC current clamps, and shunts
  • electrical power in watts
  • apparent power (volt-amps)
  • reactive power (VAR)
  • power factor
  • true root-mean-square (RMS) voltage and current, even if your waveform is non-sinusoidal and has DC offsets
  • phase angle
  • voltage crest factor
  • current crest factor
  • impedance losses
  • energy efficiency

Oscilloscope functions

Power analyzers can act as oscilloscopes with typical scope functions to help diagnose power quality issues. They can:

  • Support multiple isolated analog input channels, typically from two to four
  • Visualize real-time voltage and current waveforms
  • Be set to single-shot mode to capture high-speed transients
  • Set triggers
  • Apply math functions
  • Enable AC or DC coupling
  • Support floating inputs

For example, the PA2201A IntegraVision AC power analyzer can sample signals at 5 million samples per second with a bandwidth of 2.5 megahertz (MHz).

Some of the features and specifications an engineer should pay attention to depending on the use case:

  • AC and DC capabilities: Select a power analyzer that is compatible with the nature of the DUT and the AC/DC nature of its input and output signals.
  • Frequencies and harmonics of the signals: Ensure that the bandwidth of the power analyzer is sufficient to capture the harmonics of the signals. As a rule of thumb, the bandwidth should be three to five times the maximum fundamental frequency to capture its higher harmonics and waveform shape accurately. For example, the PA2203A 3-phase AC power analyzer has a 2.5 MHz bandwidth, sufficient for capturing the 400 Hz AC signals used in avionics. Switch-mode power supplies typically operate in tens of kilohertz (kHz), and a power analyzer with about 200kHz bandwidth is sufficient to capture their harmonics.
  • High accuracy for digital circuits: For analyzing power supply to sensitive digital circuits like field-programmable gate arrays, use power analyzers with high accuracy and high digits of resolution.
  • High-voltage safety features: Verify the tester's safety ratings to ensure that it's designed to handle high voltages and currents. For example, for high-voltage AC power analyzers, look for safety ratings like "1000 V CAT IV," meaning the device can safely handle 1,000 volts and complies with the IEC's CAT IV safety standard.
  • Connectivity options for offline analysis: For complicated diagnoses that require a lot of data from the data logger, ensure that the power analyzer has high-speed connectivity options like gigabit ethernet rather than slower options like Bluetooth.
  • Calibration: Ensure that the power analyzer's results are accurate and reliable by regular calibration with ISO/IEC 17025 certification.

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