High‑speed electromechanical protective relay for power‑system phase‑to‑ground fault monitoring. ...

Electromechanical reverse‑power protection relay for steam turbine generator motoring‑fault monitoring. ...

Three‑zone electromechanical protective relay for overhead transmission‑line phase fault protection. ...

High‑speed non‑directional fault‑detecting relay for circuit‑breaker failure backup protection. ...

Electromechanical protection relay used for power circuit overload and short‑circuit fault monitoring. ...

GE protective relay with harmonic restraint for power transformer fault‑protection maintenance. ...