Precision Power Analyzers

From single-phase systems to scalable multi-channel configurations, Vitrek’s precision power analyzers offer high-speed sampling and advanced self-heating compensation for voltage and current inputs, ensuring consistently accurate and reliable measurements across a wide range of applications.

Vitrek’s power analyzers are designed to handle high crest factor signals, low power factor loads, and waveforms up to 5 MHz, delivering accurate performance even under the most demanding test conditions. Whether you’re evaluating power electronics, electric vehicle powertrains, aerospace systems, medical devices, or industrial machinery, Vitrek’s scalable solutions, which can be expanded to thousands of synchronized channels, provide the real-time insights needed for advanced electrical measurement and analysis

PA920 Ultra-High Accuracy (0.024%) Power Analyzer

  • DC to 5 MHz bandwidth
  • 500 harmonics analysis
  • 100 readings/sec
See PA920

 PA910 High Accuracy (0.045%) Power Analyzer

  • DC to 1 MHz bandwidth
  • Harmonic Test to 500th
  • Industrial and general power analysis
See PA910

PA900 (0.03%) Precision Power Analyzer

  • 500 harmonics analysis at 400Hz
  • 384 MSPS effective sampling rate
  • Custom Power Data Screens
  • Modular Design
See PA900

XiTRON XT2640 (0.03%) Multi Channel Harmonic Power Analyzer

  • 3 analyzers in one
  • Up to 4 channels per unit.
  • Expandable to thousands of channels.
  • Mix-and-match channel cards.
See XT2640

Key Features and Benefits

Fast: 384 effective sample rate. Can make measurements up to 100/sec without a specification adder (500/sec available with specification adder).

Guaranteed Accuracy: From 0.045 to 0.024% at all power factors and frequencies.

Reliable: All specifications valid for 2 years after calibration. Most are valid for life of product.

Fully Specified for both DC and AC throughout its voltage and current capability– down to 0.1 A is available.

Excellent Value for Performance: Products at multiple prices all offer unique value.

Flexible: Can be utilized as an oscilloscope or powerscope for voltage, current and power.

Large color touchscreen for quick setup, measurement configuration, and channel selection.

Supports key Industry standards including:

  • EN60034-2-1:2014 (motor drives)
  • EN50564:2011 (standby power)
  • EN61000-3-2, 3-12, 4-7 (harmonics emissions)
  • RTCA DO-160/E/F/G (avionics)
  • Boeing 787B3-0147
  • Airbus ABD0100.1.8 (A380), ABD0100.1.8.1 (A350)

Harmonics Measurement: Displays up to 500 harmonics, with linear, relative linear, logarithmic, or relative logarithmic amplitude views.

Graph displaying up to 500 harmonics with options for linear and logarithmic amplitude scales

Power Data Screen: One-touch display for V, A, W, VA, VAR, PF, and more.

Power Data Screen showing voltage, current, power, power factor, and peak readings for selected channels.

Scope Screen: Waveform acquisition with up to six user-selectable signals.

Scope Screen displaying up to six waveforms with user-selectable scaling, offset, and color

Cycle View: Displays single-cycle waveforms with customizable amplitude and scaling.

Cycle View showing a single cycle of voltage/current waveforms with adjustable amplitude and scaling

History Screen: Continuous record of measurement results with up to four parameters.

History Screen displaying a continuous record of measurement results with up to four parameters

Built-in Standby Power Testing: Complies with EN50564:2011 and starts with a single touch.

Built-in Standby Power Testing compliant with EN50564:2011, activated with a single touch

Vector Screen: Visualizes fundamental voltage and current vectors for selected channels.

Vector Screen displaying fundamental voltage and current vectors for selected channels

FAQs on Power Analyzers

High-precision power analyzers offer superior accuracy, thermal stability, and waveform fidelity compared to standard power analyzers. Features such as advanced self-heating compensation, high crest factor capability, wide bandwidth measurement up to 5 MHz, and synchronized multi-channel acquisition allow precise analysis of switching power supplies, inverters, motor drives, and other power-electronic systems. Precision power analyzers deliver consistent accuracy under demanding test conditions where standard analyzers may introduce measurement errors.

Yes, Vitrek power analyzers such as the PA9xx series are designed as true functionally expandable power analyzers.

Featuring a modular architecture, these instruments allow you to scale from a basic single-channel configuration to a full multi-channel power measurement system. Users can easily add input channels, expand voltage and current measurement ranges, and unlock advanced features such as harmonic analysis, motor and inverter testing, and real-time efficiency monitoring.

Vitrek’s functionally expandable power analyzers also support a wide range of communication interfaces including Ethernet, USB, RS-232, GPIB, and optional CAN or Modbus, making them ideal for integration into evolving test environments. Whether for R&D, compliance, or production testing, Vitrek analyzers provide a flexible, future-proof solution.

A single-phase power analyzer measures voltage, current, power, and energy in single-phase electrical systems, commonly used for household appliances, consumer electronics, and small industrial loads. It monitors a single voltage and current pair, making it ideal for residential and commercial applications.

In contrast, a three-phase power analyzer is designed for industrial systems. It measures three voltage and current pairs to analyze power quality, phase balance, and harmonics. It is essential for industries like manufacturing, power grids, and renewable energy, where high power demand and efficiency monitoring are crucial. While single-phase analyzers are simpler and more affordable, three-phase analyzers offer advanced analysis for complex electrical systems.

A power quality analyzer works by monitoring and evaluating the power system’s electrical parameters continuously, ensuring the supplied energy is stable, efficient, and according to acceptable standards. It does this by measuring important variables including voltage, current, frequency, harmonics, and power factor in real time. It employs the use of modern sensors and transducers to pick up raw electrical signals, which are processed via advanced algorithms. The data are analyzed by the algorithms to identify anomalies such as voltage sags, swells, transients, or harmonic distortions that may interfere with equipment performance or cause power wastage. By recording real-time data and performing a detailed analysis of the waveform, these devices identify power anomalies and underlying causes, ensuring conformity against standards such as IEEE 519 and the IEC 61000. Fundamentally, the analyzer functions as a tool for diagnosing the health of the power system.

It’s working principle depends on converting analog electrical signals into digital data for analysis. After the signals are digitized, the analyzer uses numerical methods, including Fourier transforms, to decompose complicated waveforms into their base components and find anomalies. It will then compare these results against pre-established standards (e.g., IEEE or IEC standards) and check if power quality ensures operational specifications. Through logging the data over a period of time, the power analyzer not only indicates immediate problems but assists in anticipating potential faults, allowing for preventive maintenance. Its double function as a real-time indicator and predictive insight makes it an invaluable device for industries, utilities, and engineers looking to maximize power efficiency and dependability.

A multichannel power analyzer simultaneously measures key electrical parameters such as voltage, current, power, power factor, and harmonics across multiple input channels. It is specifically designed to analyze complex electrical systems that require synchronized data from several measurement points. Common examples include three-phase motors, inverters, power converters, and systems with multiple outputs.

By capturing real-time, time-synchronized data across all channels, a multichannel power analyzer enables accurate analysis of system efficiency, power quality, phase balance, and load behavior. This capability is essential for advanced testing and performance validation in industries such as automotive (including electric vehicle drivetrains), aerospace, renewable energy, industrial automation, and power electronics research and development.

A power meter and a power analyzer both measure electrical parameters, but they differ in functionality and depth of analysis. A power meter provides basic measurements such as voltage, current, power, and power factor, making it ideal for straightforward power monitoring applications. In contrast, a power analyzer offers advanced capabilities, including high-precision multi-channel measurements, harmonic analysis, waveform capture, and in-depth power quality assessments. Power analyzers are essential for testing complex power systems, optimizing efficiency, and ensuring compliance with industry standards in applications like R&D, motor testing, and renewable energy analysis.

Power analyzers measure a wide range of electrical parameters to assess performance, efficiency, and power quality in various applications. Key parameters include:

  • Voltage (V): AC and DC voltage levels across circuits and devices.
  • Current (A): Amount of electrical current flowing through a system.
  • Active Power (W): Real power consumed by a device to perform useful work.
  • Reactive Power (VAR): Power stored and released by inductive or capacitive components in AC circuits.
  • Apparent Power (VA): Total power in a circuit, combining both active and reactive power.
  • Power Factor (PF): Efficiency of power usage by indicating the ratio of active power to apparent power.
  • Energy Consumption (Wh, kWh): Total electrical energy used over time.
  • Harmonics and THD (Total Harmonic Distortion): Analyzes harmonic distortion in a system, which can impact power quality.
  • Crest Factor: Ratio of peak voltage or current to its RMS value, essential for evaluating waveform distortions.
  • Phase Angle (°): Phase difference between voltage and current, which impacts power factor and efficiency.
  • Frequency (Hz): AC supply frequency, ensuring compliance with standard power system requirements.
  • Inrush Current: Surge of current when a device is first powered on, which is crucial for motor and transformer testing.
  • Efficiency (%): Ratio of output power to input power in energy conversion systems.

Precision power analyzers play a crucial role in various industries, ensuring accurate power measurement, efficiency optimization, and compliance with regulatory standards. Key industry applications include:

  • Renewable Energy: Used in solar inverters, wind turbines, and energy storage systems to evaluate power conversion efficiency and grid compliance.
  • Electric Vehicles (EVs) and Automotive: Measures power consumption, battery performance, and motor efficiency in EVs, hybrid vehicles, and charging stations.
  • Aerospace and Defense: Ensures precision power analysis for avionics, radar systems, and military-grade electrical components.
  • Industrial Automation and Machinery: Monitors motor drives, robotics, and factory equipment to enhance operational efficiency and reduce energy waste.
  • Consumer Electronics and Appliances: Tests energy consumption, power quality, and efficiency in devices like refrigerators, air conditioners, and power adapters.
  • Medical Equipment: Ensures accurate power measurement and safety compliance in devices such as MRI machines, ventilators, and laboratory instruments.
  • Data Centers and IT Infrastructure: Analyzes power usage in servers, UPS systems, and cooling equipment to optimize energy efficiency and uptime.
  • Power Generation and Distribution: Evaluates grid performance, transformer losses, and power quality in utilities and substations.
  • Research and Development (R&D): Supports innovation in power electronics, circuit design, and energy-efficient technologies by providing precise electrical measurements.

A power analyzer can replace multiple instruments used for electrical measurements, including voltmeters, ammeters, wattmeters, power meters, oscilloscopes, and harmonic analyzers. By combining voltage, current, power, power factor, harmonics, and energy efficiency measurements into a single device, a power analyzer simplifies testing, improves accuracy, and enhances efficiency in power analysis applications.

DC power analyzers and AC power analyzers differ in their measurement focus and applications. DC power analyzers are designed to measure direct current (DC) parameters such as voltage, current, power, and efficiency in applications like battery testing, solar energy systems, and electric vehicles. They provide highly stable and precise measurements for steady-state power conditions.

AC power analyzers, on the other hand, analyze alternating current (AC) systems, measuring parameters like RMS voltage and current, power factor, phase angle, harmonics, and frequency. They are essential for evaluating power quality, motor drives, inverters, and industrial power systems. Unlike DC analyzers, AC power analyzers handle dynamic waveforms and fluctuations in electrical signals.

Some advanced power analyzers offer both AC and DC measurement capabilities, making them versatile tools for comprehensive power analysis across various applications.

A portable power analyzer and a benchtop power analyzer differ primarily in their design, application, and mobility.

Portable Power Analyzer: Compact, lightweight, and battery-powered, portable power analyzers are designed for field use and on-site power quality assessments. They are ideal for troubleshooting electrical systems, conducting energy audits, and performing real-time diagnostics in industrial or commercial settings.

Benchtop Power Analyzer: Larger and designed for stationary use, benchtop power analyzers offer higher accuracy, expanded measurement capabilities, and advanced features. They are commonly used in research labs, product development, and compliance testing, where precision and comprehensive power analysis are required.

While portable analyzers prioritize convenience and mobility, benchtop models focus on precision and in-depth analysis for complex electrical measurements.

Power quality is the degree of uniformity and stability of electrical parameters—voltage, current, and frequency—in relation to sinusoidal waveforms. Harmonic deviations, voltage sags, voltage swells, and transients can all have detrimental effects on system efficiency as well as on equipment longevity. These challenges are met by our power analyzer in terms of waveform analysis, real-time measurement, and analyzing up to 500 harmonics, with linear, logarithmic, and relative amplitude displays to provide complete insight into system performance.

Power quality analysis is used to identify electrical disturbances that affect system performance, efficiency, and compliance with industry standards such as IEEE 519 and IEC 61000. By capturing high-resolution waveform data, harmonic content, and transient events, power analyzers support corrective action, preventive maintenance, and verification of electrical system integrity. Vitrek power analyzers provide real-time measurement capabilities with up to 384 effective samples per second, delivering the accuracy and responsiveness required for comprehensive power quality assessment.