Ramyaa Electro Gear Pvt Ltd (founded in 1992 in Chennai) manufactures a wide range of electrical and electronic equipment—such as rectifier and control transformers (2 kVA – 60 kVA), SCR battery chargers (including under-slung types for railway coaches), power/control panels, annunciator/driver desk systems, ferroresonant stabilizers, and more—for Indian Railways and metro coaches.