Calmet

21/07/2026

At Calmet, we know how crucial precision and reliability are in the power industry. ⚡

For years, we have specialized in designing and manufacturing advanced measuring equipment. Our solutions enable accurate testing, calibration, and verification of electricity meters – both in laboratory and field conditions.

In the picture, you can see one of our setups in action. We create equipment that engineers can rely on every single day. 🛠️

Discover our full range of capabilities and efficient measurement solutions on our website:
👉 www.calmet.com.pl

📩 [email protected]

09/07/2026

Setting a new standard of precision in your laboratory! ⚡
Meet the C300B Three-Phase Power and Energy Calibrator.

If you are looking for uncompromising accuracy when testing energy meters, power quality analyzers, transducers, or wattmeters, the C300B is a true game-changer. It allows you to generate three-phase voltages up to 3x560V and currents up to 3x120A (up to 360A in single-phase connection!) with accuracy class of 0.02% or 0.05%.

What does this mean in practice?
🕒 Full Automation – Automatic energy meter testing with error calculation and impulse counting.
📈 Power Quality Analysis – Programming of harmonics up to the 63rd order, interharmonics, and higher frequencies up to 500Hz.
🛠️ Versatility – Comprehensive testing of protection relays (overcurrent, directional, frequency, and more).
💼 Mobility & Convenience – Housed in a compact, rugged transport case, making it perfect for both laboratory and field operations.

Automate your measurements and gain full confidence in every single result. Learn more about the C300B from our data sheet! 👇
Want to learn more about this new feature? Get in touch with us!

📩 [email protected]
💻 www.calmet.com.pl

24/06/2026

We are pleased to introduce a new feature of the Calmet TS33 Test System.

The TS33 has been equipped with two pulse inputs, enabling simultaneous testing of active and reactive power at the same time. This makes measurements faster, more efficient, and more convenient in practical applications.

The new functionality improves the testing process and expands the diagnostic capabilities of the device.

See how it works in practice in the video below.
Want to learn more about this new feature? Get in touch with us!

📩 [email protected]
💻 www.calmet.com.pl

28/05/2026

💡 Can Cable Length Distort Energy Meter Readings?

How Unexpected CT/PT Burden Affects Measurement Accuracy.
Many engineers and installers focus heavily on the accuracy class of Current Transformers (CT) and Potential Transformers (PT). However, even a top-tier class 0.2 transformer won't guarantee precise billing if a critical parameter is overlooked: the secondary burden.

What do the measurements reveal?

Appearances can be deceiving: When testing directly at the energy meter terminals at a current of 4A, the system seems to operate perfectly, with power utilization at around 59%.

The hidden risk: Once you account for the connection wire resistance (Rw = 0.0408 Ω) and predict the system behavior at the nominal current of 5A, the expected burden jumps to 106.4%! The current transformer is actually overloaded, directly leading to increased ratio and phase errors.

Key Takeaway: Testing the burden at the meter terminals without accounting for the connecting cables can lead to highly erroneous diagnostic conclusions. In practice, this leads to inaccurate energy balancing and potential financial discrepancies.

🛠️ How to prevent this?
We highly recommend verifying installations using reference meters that feature a built-in "burden check" functionality. Calmet’s smart testing devices automatically calculate power prediction at nominal currents, making comprehensive grid and measurement system analysis seamless and precise. Read the full technical analysis to master the interpretation of CT/PT burden measurements.

👉 Visit our website to explore our advanced calibration and testing solutions: https://www.calmet.com.pl/en/

06/05/2026

Last week, we had the pleasure of hosting our partners from Mexico – INELAPSA Instrumentos Electricos de Alta Precision SA.
It was a productive and engaging visit, filled with discussions about technology, ongoing projects, and future directions for our collaboration. Meetings like this always bring more value than online calls – they help build stronger relationships and mutual understanding.

Thank you for your visit and the great conversations. We’re looking forward to what’s ahead.

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/