The CMC 256plus is the universal solution for testing protection relays and calibrating electricity meters of up to class 0.2, transducers, power quality meters and synchrophasor measurement devices (IEEE C37.118).

It is the right choice for all applications requiring the highest versatility and precision.

The unique accuracy over the complete amplitude range makes the CMC 256plus also ideal for device manufacturers in their R&D process, type testing, acceptance testing or device calibration.

Features and Benefits

Protection test set and universal calibrator in one device
Testing of all relay generations (electromechanical, static, numerical, IEC 61850 IEDs).

The signal sources are the reference; no additional reference meters are required.

Up to 22 voltage/current generators in one device
Test Universe software with unrivaled manual and automatic testing functionality.

OMICRON Protection Testing Library - test templates for the most important relays.

End-to-End testing with GPS or IRIG-B (typical error < 1 µs)
Highest quality, safety, reliability and robustness