Integrated relay test set with high accuracy & full solution (complying IEC61850 sampled value and GOOSE), fully meet all the requirements for detection and debugging of IEC61850 IEDs, Merge Units, station control systems and traditional protection relays. Testing with Hardware-in-the-Loop (HIL) is crucial for modern substations in the power grid, especially concerning the IEC 61850 and IEC 61869 standards. With the MGC and SVA embedded in the SMRT and FREJA display. Ensto's comprehensive testing services offer functional and reliable remote control and automation system testing for both primary substations and smart compact secondary substations. In addition, we have experience in testing protection relays, and our expertise covers all the most common. Compact relay test set for quick and easy manual three-phase testing Ultra-portable test set for primary and secondary injection, as well as basic protection tests Modular, multi-phase protection relay test set and commissioning tool Compact relay test set for quick and easy manual three-phase. Power System protection is crucial part of power station and substations safety which use protection relays and circuit breakers to isolate faulty parts or zones within the plant including Generator zone, Motor zone, Feeder zone, Bus zone, Transformer zone and Transmission Lines zone. This is distinct from maintenance testing, which verifies performance over time.