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The SMRT1 and 1B single-phase relay test system are units that combine high compliance voltage with high current to test electromechanical, solid-state and microprocessor-based overcurrent relays, including voltage controlled, voltage restraint, and directional overcurrent. Furthermore, it has the same IEC 61850 capabilities both for GOOSE and SV as its multi-phase siblings.

The FREJA and SMRT Digital Twin is the first of it’s type to be created and is a functional digital twin of Megger's relay test systems, FREJA and SMRT. This pioneering technology enables you to virtually test Siemens SIPROTEC 5 devices through Siemens’ cloud-based SIPROTEC DigitalTwin. The relay tests are performed online, before the physical devices are accessible, and with tested and approved protection settings, only a subset of the tests need to be repeated on the physical devices to ensure correct input and output hardware and connections.

The SMRT1 single-phase relay test system and SMRT1D are standalone units that combines high compliance voltage with high current to test electromechanical, solid-state and microprocessor-based overcurrent relays, including voltage controlled, voltage restraint, and directional overcurrent. It can also test under/overvoltage, negative sequence under/overvoltage, single-phase impedance, single-phase power, directional, synchronising, auto-synchronising, current balance, frequency, volts/hertz, reclosing, thermal, and various other relays (see the Applications sections for more).