Electric Power Testing


From Component to Vehicle Energy Management

HBK provides the entire measurement chain for electrical power testing – from electrical machine testing to high voltage and complex inverter control testing in the automotive, ground vehicle, and aerospace industry as well as the manufacturing, production, and energy industries.

Our solution covers sensors, hardware, and software for testing electrical inverters and electrical machines. Mechanical signals (e.g. torque) and electrical signals (current and voltage) are acquired simultaneously, helping you to better understand the electric drive and its losses within minutes. This is important for the optimization of the drive as well as the increase in efficiency.

Testing electrical machines and electrical power trains is a key task in developing the electric future of industry and transportation. ​

For a substantial increase in efficiency of next-generation machines, drives, cars and larger vehicles, it is essential that every machine and every drive are precisely tested and improved, wherever possible. And that these tests do not only cover static tests but also allow the understanding of the dynamic behaviour of machines and drives.

While power is generated and distributed there is a continuous challenge to test the quality of the generation, ​the effects from the consumers back into the grid, and the stability and quality of the grid itself. Modern grids are highly managed intelligent energy distribution systems, and advanced test methods are needed to understand the grid behavior better beyond the typical RMS and power values.

Creating a system out of components sounds easy but testing this is a real challenge. And it becomes more difficult as advanced concepts like high phase counts, multi motor drive trains or hybrid vehicles are coming into the picture. Or if the system just gets so large that investigating on component level only does not help. Be it an all-wheel electric car, a locomotive from pantograph to traction motor, or the electric installation on board a ship or a plane, testing needs to be able to adapt to these complex multi-dimensional tasks.

Higher power electrical machines are operated at higher voltages and huge currents – several kV and kA. Or – like in aerospace –  voltages are brought up to bring currents down to save copper-based weight. Safely and accurately testing such machines and installations operating above the 1 kV border of “low voltages” is quite challenging. ​

And when it comes to the subsystems an AC or the new DC grids are built up from – inverters, transformers, switchgears – the demand on high voltage test capabilities up to several 100 kV as well as equipment and user protection becomes mission critical.


From Sensors to Instruments and Software

Torque sensors

HBM develops, produces and offers all kinds of products for Torque Measurement including Torque Transducer, Torque Meter and Torque Sensors.

Current transducers

Closed loop, “Zero-Flux” CTs offer unmatched accuracy and high bandwidth for demanding applications in electric power testing.

High Voltage Probe

High Accuracy, Passive Differential Probe for Safe Measurement at HV-Systems and Large Drives with Voltage up to 5 kV.

Power Analyzers

The eDrive Power Meter and Power Analyzer packages are tailored for power measurement at inverters and inverter driven machines.

Mitch Marks


If you have any questions concerning Electric Power Testing, we are here to support you.

Mitch Marks is among HBK’s many experts in electric machine and drivetrain testing. He is a Business Developer for electrification at HBK – Hottinger, Brüel & Kjær with a Masters in electrical engineering. If you have any questions regarding our products or applications, please get in touch with Mitch.