DC-CT® Current Transducers
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Power Transformer TestingTesting solutions for power transformers
The Dewesoft power analyzer redefines the analysis and testing process of the power transformer with its unique set of software tools and flexible hardware.
Highlights
Dewesoft quality and 7-year warranty
Enjoy our industry-leading 7-year warranty. Our data acquisition systems are made in Europe, utilizing only the highest build quality standards. We offer free and customer-focused technical support. Your investment into the Dewesoft solutions is protected for years ahead.
We believe in our products!
And we're confident you'll love it too! But don't just take our word for it. Get hands-on with a demo unit, completely free of charge. No strings attached, just real data. Reach out to your local Dewesoft team and get your demo unit now!
Our base software is always free.
It includes everything you need for advanced data acquisition and common signal processing — no maintenance fees, no contracts. You buy it, you own it. All future updates? Free forever. And the best part? Analysis seats are unlimited and free. Once the data is recorded, anyone can download our software to review and analyze your data — no license needed.
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Dewesoft is 100% owned by employees who believe in what we do — and love doing it. We’re in this with heart, passion, and long-term commitment. What does that mean for you? Our core value — caring for our customers — isn’t going anywhere. We’re here for the next 100 years, protected from outside acquisitions. Your investment in our technology is safe, supported, and future-proof.
Quality, Made in Europe.
At Dewesoft, quality isn't just a promise — it's a core value. Our products are 100% designed, developed, and manufactured in-house, right in the heart of the European Union. From precision machining and PCB manufacturing to final assembly and software development — we do it all ourselves, to the highest ISO standards. We're proud to support local production and take social responsibility seriously.
Quality That Lasts.
At Dewesoft, quality is more than just a word — it's a commitment. That's why our products come with an industry-leading 7-year warranty. It's just one more way we protect your investment and give you peace of mind for the long run.
Transformer Power Analysis and Testing
The testing of power transformers makes a couple of different measurements necessary, which are described in the international IEC 60076 standard.
Our data acquisition systems provide key features for complete power transformer testing:
Scope and Vector Scope offer the capability to analyze the voltage ratio and phase displacement of different primary and secondary configurations (star, delta, interconnected star).
Transient recording functionality allows storing all signals at the full sampling rate for detailed analysis. In combination with the trigger functionality failures and transient events (also during long-term measurements of the transformer) can easily be detected.
Analysis according to IEC 60076 standard
Correction of power losses depending on temperature
Additional software sensor calibration
Measure harmonics and symmetrical components
Power Quality Measurement on Transformers
The Power quality module allows measuring harmonics of the voltage and the current up to some hundred kHz. The data can be represented in the percentage of the fundamental frequency as required for the no-load current according to IEC 60076 standard.
The power quality module also automatically calculates the zero-sequence impedance which is required in the power transformer testing.
The math library allows us to automatically calculate parameters like the magnetizing current, the iron losses, the main inductance for example out of the no-load test or the stray inductances out of the short-circuit tests.
For more information check the power quality application page.
Power and Efficiency
Power and efficiency analysis of the transformers require the highest accuracy of the power calculation for all phase angles. Especially analysis at lower power factors is very difficult with conventional measurement equipment.
The additional sensor calibration functionality allows correcting the behavior of voltage and current transducers for amplitude and phase over the whole frequency range.
Furthermore, IEC 60076-1 standard requires the correction of measured power losses depending on the temperature. Dewesoft power analyzer makes it easy to measure all the required temperatures (winding, oil, ambient, etc.) perfectly synchronized to voltage, current, and other measured parameters.
In addition, it’s possible to automatically calculate the corrected power losses. You can also measure the power of oil pumps and fan motors, and even the sound level of the transformer according to the IEC 60551 standard.
This covers all the possible tests that you can experience with power transformers, and Dewesoft can cover them all with one single device.
Typical DAQ Configuration
For the most typical configuration, we suggest the R2DB DAQ system with optional additional KRYPTON DAQ for temperature inputs:
8x high-voltage analog inputs
8x current analog input
3x universal thermocouple analog inputs
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