Electrical Power Testing Solutions

Dewesoft Power Quality Analyzers combine power, energy, scope and FFT measurement into a single portable instrument. High voltage CAT II AC/DC inputs measure up to ±1200 V at 0.03% accuracy. All current sensors are supported, and can be scaled and phase-corrected by the built-in sensor database. DAQ engines provide up to 15 MHz sample rate, handling the most demanding power measurement applications. Dewesoft analyzers measure power quality parameters according to IEC 61000-4-30 Class A. Multiple phases can be measured at the same time. Vivid, user-configurable displays including vectorscopes, scope, FFT and meters, allow you to see and analyze your data like never before.

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What is electrical power?

Electrical power is the rate at which electrical energy is transferred by an electric circuit. It is typically measured in watts (W), where one watt is equal to one joule of energy transferred per second. Electrical power can be calculated using the formula:

  • Power (P) = Voltage (V) * Current (I)

where:

  • Voltage (V) is the potential difference between two points in the circuit, measured in volts.

  • Current (I) is the flow of electric charge through the circuit, measured in amperes (amps).

What is power quality?

Power quality refers to the characteristics of the electrical power supplied to a system that affect its performance. Good power quality ensures that electrical systems operate efficiently, reliably, and safely. Poor power quality can lead to equipment malfunction, reduced lifespan, and energy inefficiency. Key aspects of power quality measurement include Voltage Stability, Frequency Stability, Harmonics, Transient Surges, Voltage Sags and Swells, Interruptions, and Power Factor.

What is a power analyzer?

A power analyzer is an instrument used to measure and evaluate the electrical power characteristics of a system. It provides detailed insights into various aspects of power quality, energy consumption, and electrical performance. Power analyzers are essential tools for diagnosing, troubleshooting, and optimizing electrical systems. They are used in a wide range of applications, including industrial facilities, commercial buildings, utilities, and research labs.

Key functions and features of a power analyzer include:

  1. Voltage and Current Measurement: Power analyzers measure the voltage and current in electrical circuits, providing accurate readings for both AC (alternating current) and DC (direct current) systems. Dewesoft power analyzer can measure direct voltage up to ±2000 V!

  2. Power Measurement: They calculate real power (watts), apparent power (volt-amperes), and reactive power (volt-amperes reactive). This helps in understanding the actual power consumption and efficiency of electrical devices.

  3. Power Factor: Power analyzers measure the power factor, which indicates the efficiency of power usage. A low power factor means more reactive power, leading to higher energy costs.

  4. Harmonics Analysis: They detect and analyze harmonic distortions in the electrical system. Harmonics can cause equipment overheating, increased losses, and interference with other devices.

  5. Energy Consumption: Power analyzers track and record energy consumption over time, providing data on kilowatt-hours (kWh) used. This is useful for energy management and cost allocation.

  6. Transient Analysis: They capture and analyze transient events such as voltage spikes, sags, and swells, which can affect the performance and longevity of electrical equipment.

  7. Data Logging and Monitoring: Many power analyzers have data logging capabilities, allowing continuous monitoring of electrical parameters over time. This data can be stored and analyzed to identify trends and issues.

  8. Communication Interfaces: Advanced power analyzers often come with communication interfaces such as USB, Ethernet, or wireless connectivity, enabling remote monitoring and integration with other systems.

Dewesoft power analyzers

Accurate

Dewesoft power analyzers provide accurate measurement accuracy (0.03%) throughout the high bandwidth (up to 5 MHz) and throughout the entire measurement chain from the current transducer to power calculation. We provide accurate measurement results for static and dynamic tests.

Flexible

Dewesoft power analyzers offer flexible configurations, from 3-phase input to multi-phase input in a single-box or distributed configuration. Inputs can easily be expanded to support mechanical measurements such as torque, temperature, vibration, strain, and force. Additional digital inputs and outputs, such as CAN, CAN FD, XCP, Ethernet, Video, GNSS, etc., are possible.

Powerful

You can easily calculate hundreds of power parameters, harmonics, FFTs, power energy, and electric motor efficiency. Calculations can even be performed on multiple parallel power modules with different configurations. Our power analyzers support offloading calculations to GPU with NVIDIA CUDA support to make real-time calculations online. RAW data storing offers a convenient option to recalculate everything offline without repeating your test.

Browse recent case studies

Case Studies

Testing and Validation of Small Electric Motors Using an Efficient Test Bench Design

LOGICDATA improved small electric motor testing with a flexible test bench design, using DewesoftX software for efficient motor analysis. Key features included automated motor mode detection, efficiency mapping, and thermography for fault detection. This setup reduced testing time, improved data accuracy, and optimized motor performance, ultimately streamlining LOGICDATA's development process.

Marco Behmer

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Application Notes

Hybrid Boat Power Analysis

See the case study on how the analysis of hybrid boat drivetrains that use sustainable energy sources can lead up to a 20% improvement in fuel efficiency.

Carsten Frederiksen

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Case Studies

Testing Power Inverters and Motor Terminal Issues

Learn how our power analyzers with high bandwidth voltage and current measurements are used to troubleshoot electric motor and inverter terminal issues.

Gabriele Ribichini

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Case Studies

Power Inverter Certification According to Standards and Grid Codes

The article discusses EPC Power Corporation's collaboration with Dewesoft LLC to meet international certification standards for their utility-scale PV inverters. Facing complex global standards like ISO 9001:2015 and UL 1741, EPC Power utilized Dewesoft's high-speed power analyzers for rigorous testing, ensuring their products comply with various grid codes and quality standards.

John Miller

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Measuring and Analyzing Electric Motor Vibration

Electric motors are widely used in various engineering fields, from industry to automotive applications, but they bring vibration and noise challenges. Investigating vibrations and identifying frequencies are vital for optimizing electric motor efficiency.

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Record-setting World Time Attack Racing Using Live Telemetry

The engineers at Bugatti Rimac had a mission: to set a new world record for a production EV (electric vehicle) on one of the most challenging tracks in the world - the Nürburgring Nordschleife in Germany.

Matjaž Strniša

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Dewesoft Data Acquisition (DAQ) Integration with KS Tornado Testbed

Learn how Elin Motoren continuously got the vibration data from Dewesoft hardware and software into the Tornado testbeds via TCP/IP by a Dewesoft plugin.

Konrad Schweiger

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Case Studies

Frequency Stabilization: Primary Control of Hydro Turbines - Part II

This article will cover the development of test methods for validating governor performance and trouble-shooting or optimization of turbine governors.

Carsten Frederiksen

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Frequency Stabilization - Primary Control of Hydro Turbines - Part I

Learn how Uniper could make an educated selection of proper frequency transducers based on the test results made with Dewesoft equipment.

Carsten Frederiksen

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Application Notes

Economizer Testing - Do Energy Savings Through Harmonic Filters Really Work?

With help of a highly precise Dewesoft power analyzer, we checked if electric power economizers really save 10% of energy as economizer manufacturers claim!

Gabriele Ribichini

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LED Testing - Efficiency and Power Quality Analysis

Using Dewesoft Power Analyzer we investigate the efficiency and power quality of LED lights according IEC 61000 on electromagnetic compatibility (EMC).

Rupert Schwarz

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Case Studies

Electric Powertrain Measurement on Hydrofoil

Dewesoft set up the measurement of both the DC and the AC part of the Q2 powertrain to measure the efficiency and quality of power conversion of the brushless motor power inverter.

Carsten Frederiksen

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High-Voltage Switch Testing With Synchronizer

Learn how Dewesoft DAQ system and Power Analysis solution worked for checking the switching function of an old synchronous high-voltage circuit breaker.

Gabriele Ribichini

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Case Studies

Performance Testing and Measurement on Electric Boats

Dewesoft power analyzer & data acquisition system was used for performance testing and measurement of Alfastreet Marine electric boat. See the case study.

Bernard Jerman

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Case Studies

Electric Household Appliance Testing

Learn how BSH is utilizing our DAQ systems for voltage, current, and temperature measurements to test household appliances and perform power analysis.

Leslie Wang

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Correlating Power Measurements with Electromotor Vibration Data

Learn how the automation of the report generation process provided to be a huge time-saver after acquiring data with Dewesoft measurement equipment.

Grant Maloy Smith

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High-voltage Testing of Railway Infrastructure

Learn how the Dewesoft DAQ system was used for railway maintenance and testing the safety of the electrical infrastructure power on the railway.

Konrad Schweiger

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