Calmet

15/04/2026

How to verify an energy meter without power interruption? 🔌💡

We present the testing of a 3P4W system using the Calmet TE30 working standard. This device is the "Swiss Army Knife" for electrical engineers:
✅ Extreme Accuracy: Class 0.05.
✅ Versatile Current Measurement: Up to 12A (direct) or up to 3000A (using clamps).
✅ Instant Results: Real-time energy error calculation on a clear, high-resolution display.

Everything is packed into a rugged, heavy-duty case, ready for the toughest field conditions. Check out our latest on-site test in action!

https://www.youtube.com/watch?v=afqkxwZGskA

TE30 Three Phase Portable Working Standard, Network Analyser and Instrument Transformers TesterTE30 Portable Working Standard and Analyser is a portable, mul...

03/04/2026

Wishing you a precise and joyful Easter - may it be filled with balance, positive energy and perfectly measured moments.
Your Calmet Team

25/03/2026

How to effectively measure non-technical power losses? 💡

Did you know that non-technical electricity losses result not only from illegal consumption but also from the limitations of measuring equipment when facing non-linear loads? In low-voltage networks, the loss and balance difference rate can reach as high as 5.7%!

At Calmet Sp. z o.o., we believe that "you cannot manage what you do not measure." That is why our testers, such as the advanced TE30, offer cutting-edge diagnostic functions that allow for:
✅ Power spectrum measurement and identification of reflected active power.
✅ Precise analysis of the "Power Cuboid" (including deformation and distortion power).
✅ Detecting under-registration of energy meters caused by harmonics.

Back in 2001, our Calport 100 analyzer set the trends in this field. Today, the TE30 model continues this mission, helping DSOs and industrial plants reduce energy losses through superior diagnostics.
Learn more about modern network diagnostics! 👇

https://www.calmet.com.pl/en/

18/03/2026

New Precision Standards: Implementing the Calmet TB51 Five-Position Test Bench at Calmet! ⚡

We are excited to announce the latest upgrade to our laboratory infrastructure: the installation of the Calmet TB51, a state-of-the-art stationary three-phase meter test bench. This investment significantly boosts our testing capacity while ensuring the highest level of measurement integrity for our partners.

What does this mean for our clients?
High Efficiency: We can now perform simultaneous testing and calibration for up to five electricity meters.

Unmatched Precision: The system operates with an internal reference standard of accuracy class 0.02% or 0.04%.

Versatile Testing: The bench is designed for all types of meters (single and three-phase) in various measurement modes.

Advanced Harmonics: We can generate harmonics up to the 63rd order and special test signals (phase-fired/burst-fired) according to IEC 62057-1 standards.

Wide Dynamic Range: The system supports a broad range of voltage (20...600V) and current (0.01...120A) per phase.

Fully Automated Compliance The TB51 allows us to perform a full suite of standardized tests, including accuracy (basic error), repeatability, starting current, and no-load run. With the integrated TB PC Soft, every process is monitored in real-time, resulting in automated, professional test reports and seamless data export.
Whether you are a utility provider or a meter manufacturer, our new facility is ready to provide the reliability your grid demands.
Contact us today to learn more about our enhanced testing services!

Visit our website here: https://www.calmet.com.pl/en/

11/03/2026

⚡ Metrology case

Can two certified energy meters show different measurement results when installed in the same circuit?

Yes — and surprisingly, this does not necessarily mean that one of them is wrong.

Several factors can influence the measurement result, including:
• the accuracy class of the meter
• the presence of harmonics in the network
• phase shift between current and voltage
• measurement conditions

This is why precise test and calibration systems for energy meters are so important in electrical metrology.

At Calmet, we work every day on solutions that allow verification of meter accuracy under various network conditions.

Visit our website here: https://www.calmet.com.pl/en/

04/03/2026

Looking for a reliable and experienced partner in metrology?
At Calmet we focus on quality, precision, and long-term cooperation. Our goal is simple — to deliver solid solutions that meet real business needs while maintaining high technical standards and on-time ex*****on.

On our website you can find:
✔️ Detailed information about our services
✔️ Examples of completed projects
✔️ Technical capabilities
✔️ Direct and fast contact with our team

We believe that transparency, professionalism, and commitment are the foundation of every successful project. If you are looking for a dependable partner who values both quality and efficiency, we invite you to learn more about us.

Visit our website here: https://www.calmet.com.pl/en/

Feel free to reach out — we’re ready to discuss your next project.

24/02/2026

⚡ Class 0.2S, 0.5S, 1.0… but what does it actually mean for your energy measurements?

Accuracy class defines the maximum permissible error of an energy meter under specified conditions.
At first glance, the difference between 0.2S and 0.5S may seem small.

In reality, across high energy volumes, even a 0.3% deviation can translate into significant financial impact.

But accuracy class by itself does not guarantee precision.

Measurement performance depends on:
🔹 Load conditions
🔹 Power factor
🔹 Temperature and environmental factors
🔹 Proper calibration and verification

That’s why advanced calibration systems must simulate real operating conditions — including different current levels and phase angles.

At Calmet, our calibration solutions are designed to verify meters according to their declared accuracy class, ensuring compliance, reliability, and long-term measurement stability.

🔬 Because in energy metering, fractions of a percent matter.
📩 What accuracy class do you most commonly work with?

Link: www.calmet.com.pl

18/02/2026

☀️ You invested in photovoltaics, but your energy bills still seem higher than expected?

Before questioning your contract or tariff, it’s worth taking a closer look at the metering system.

In modern networks with renewable energy sources, power flows in two directions.

This means energy meters must accurately measure both import and export of active and reactive energy.
That’s why testing in all four quadrants is essential:
🔹 Active energy import
🔹 Active energy export
🔹 Reactive energy import
🔹 Reactive energy export
Without full verification in each quadrant, measurement data may not reflect the real energy balance — especially in installations with PV systems.

At Calmet, we design and deliver solutions that enable comprehensive four-quadrant testing of energy meters, in line with current industry standards and market requirements.

🔬 Precision in calibration is not a detail — it is the foundation of reliable measurement.

📩 If you’d like to learn how professional four-quadrant testing works in practice, feel free to contact us.

Link: www.calmet.com.pl

09/02/2026

At Calmet Sp. z o.o., we are constantly focused on development and precision!

💡 We have just completed internal training on the functionalities of our flagship device – the Calmet TS33.

The Calmet TS33 is more than just a tester; it’s a complete, three-phase automatic system for testing energy meters, performing perfectly both in the laboratory and directly on-site. With its integrated current source (up to 120A) and voltage source (up to 600V), it allows for full diagnostics without the need for external loads.
During the training, we focused on:
✅ Test Automation – The Calmet TS33 allows for defining custom test procedures and meter databases, which reduces work time and eliminates human error.
✅ Versatility – The device tests electromechanical and electronic meters, as well as CT/PT transformers for ratio and burden errors.
✅ Power Quality Analysis – Harmonic tracking, vector diagrams, and oscilloscope functions provide us with a complete picture of the network.

Our expertise is a guarantee of the highest quality support for our clients! 🤝

Learn more about the Calmet TS33 at: www.calmet.com.pl 🌐

29/01/2026

Why choose TB41?

✅ Efficiency: Test up to 4 energy meters at once, saving you time and operational costs.
✅ Precision: Choose between 0.02% or 0.04% accuracy classes for reliable, professional results.
✅ User-Friendly: Our TB PC-Soft software automates the entire process, making complex tests simple.
✅ Complete Package: The standard scope includes the TS41 system, photo heads, laptop with software, and a manufacturer calibration certificate.

Built by experts in Zielona Góra, Poland, since 1989, Calmet continues to lead the way in measurement equipment.
Upgrade your testing standards today!

👉 Visit: www.calmet.com.pl

22/01/2026

Stop just testing. Start defining your standards with Calmet CP11B.

Are you tired of manually re-configuring parameters for every single test? The Calmet CP11B Single Phase Power Calibrator & Tester is here to change your workflow.

The key to efficiency in a modern lab isn't just a better procedure – it’s a better model. With CP11B’s intuitive interface, you can move beyond simple testing by creating and defining specific "Device Types". Whether it’s a specific energy meter, a current transformer, or a transducer, you define the digital twin once, and the system handles the precision control of the test sequence for you.
Why engineers choose the CP11B:

🚀 Speed & Consistency: Define your device types once and reuse them for every subsequent test to ensure 100% repeatability.
🎯 Unmatched Precision: Total control over voltage (up to 560V), current (up to 120A with EA11 cables), power, phase angle, and frequency.

🛠️ Ready-to-Go
Ecosystem: The standard kit includes the Calpro 300 Basic software, a certificate of calibration, and a set of safety cables.
📦 Total Mobility: Need to work on-site? The optional ET11 transport case keeps your high-precision equipment safe anywhere you go.

Don’t just follow procedures—define the assets you test. Experience the power of Polish engineering from Zielona Góra, trusted by laboratories worldwide.

👇 Learn more about the CP11B ecosystem:
https://www.calmet.com.pl/en/

15/01/2026

We are back with a fresh dose of metrological expertise! 💡

Hello everyone! We hope you’ve had a wonderful break and your batteries are fully recharged. We’re kicking off the new year with a high-voltage update! ⚡️

We have just released our latest Application Note AN47, focusing on the testing of DIN rail energy meters. While these devices are often small and cost-effective, their role in sub-billing and energy management is critical – which means their precision must be beyond doubt.

What will you find in this new material?

Practical Guide: How to quickly and efficiently verify modular meters using the Calmet C300B Three-Phase Power Calibrator.
Testing in Demanding Conditions: Learn how to check meter response to signal distortions and harmonics (up to the 64th!) using our Calpro 300 software.

Register Test: We explain why the duration of the energy register test matters and how to eliminate quantization errors.
Automation: See how to create ready-to-use test scenarios that minimize work time and eliminate the risk of human error.
Our C300B calibrator is an all-in-one solution with an accuracy class of up to 0.02%, designed to handle every challenge in a modern laboratory.

👉 Download the full Application Note here: https://www.calmet.com.pl/en/download/application-notes

Ensure the highest standards of measurement with Calmet! 🛠️