Testing of current transformers (CT)

The measuring bridges in our WM series are suitable for testing conventional transformers as well as electronic and non-conventional digital transformers. WM1000 and WM3000 are primarily used to compare the secondary signals of the instrument transformer with the reference signal of a standard transformer.

The electronically compensated burdens are used as load for current transformers during a test. Choose between components for manual or automatic testing as well as fixed and variable burden levels.


Electronic Current Burden Max. six fixed burden steps; suitable for manual testing of instrument transformers


Electronic Current Burden Free selectable burden steps; suitable for manual and automatic testing of instrument transformers


Standard Current Module Nominal current max. 10000 A,  1 A/5 A


Current Transformer Measuring Bridge Suitable for conventional transformers


Current Transformer Measuring Bridge Suitable for all types of transformers


Mobile computer and Scanner 2-D barcode scanner

Current Transformer Testing with equipment by ZERA

As the importance of ensuring accurate and reliable measurement in power grids has grown, the need for accuracte current transformer testing has also increased. At ZERA, we understand the value of accurate results and the role that current transformer testing plays in achieving them. That's why we've developed our own current transformer test equipment, designed to meet the unique needs of our clients, and ensure accurate measurements in any situation.

Whether testing is required for installation, maintenance, or troubleshooting, our team is committed to providing comprehensive and reliable solutions for any CT test.

With ZERA, you can rest assured that the performance of your current transformer will be tested with the highest level of expertise and care.

Enhancing Accuracy and Efficiency - Current Transformer Testing with ZERAs equipment

Current transformer testing is essential to ensure to ensure the safe and efficient operation of the power grid.. Our equipment provides reliable solutions for CT testing with their advanced testing capabilities. Our current transformer test equipment is designed to enhance the accuracy and efficiency of CT testing required to maintain the reliability of the power grid..

ZERA’s equipment makes CT testing more efficient and enables safe and more accurate results. As technology advances, so does the need for reliable equipment for the power grid.

ZERA’s current transformer test equipment provides the perfect solution to meet the increasing demands for accuracy and efficiency of power supply systems..

High precision current transformer testing

High precision current transformer testing is an essential process that ensures the safety and reliability of power systems. Designed specifically for accurate and reliable measurements, we offer state-of-the-art current transformer test equipment that enables precise testing of CTs in accordance to international standards.

With the latest technology, our test equipment provides reliable results for both laboratory and field testing.

ZERA's current transformer test equipment provides high accuracy, repeatability, and stability to meet the most stringent demands for measuring current transformers' characteristics.

By choosing our CT testing solutions, power engineers can minimize shutdown time, reduce costs, and ensure the safety and reliability of their power systems.

Possibilities for flexible integration

If you already have a current instrument transformer test system in place, you'll be happy to know that all of our current transformer test equipment can be seamlessly integrated into your existing setup. This means you won't have to change your current testing process or invest in a completely new system in order to take advantage of our high-quality testing equipment. Our equipment is designed to work seamlessly with other components in your system, so you can trust that you're getting accurate and reliable results every time.

Whether you're looking to upgrade your current testing capabilities or you're just beginning to explore the world of current transformer testing, we've got the tools you need to get the job done successfully.