Test system for highly complex test tasks. 4 voltage outputs and 6 current outputs which can provide particularly high output power allow three-phase tests on static and digital as well as self-powered relays. Control & Protection delivers proven relay testing and protection solutions from Megger, a trusted name in power system testing. If they fail, the impact is immediate and costly. From detailed fault. Megger offers test sets to cover all these applications, including the SMRT46, which you can configure to supply four voltages and three currents or, alternatively, six currents. Discover our range of products in Protection Relays by Application: PowerLogic™ P3 Protection Relays,Easergy Sepam Series 80,PowerLogic™ A5 Arc Protection,PowerLogic™ A1 and A3,PowerLogic™ P3 Protection Relays,PowerLogic™ P5 Protection Relays,Easergy Sepam Series. 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.