Hi-Rel Electronics Limited offers Industrial Variable Speed AC Drives. Hi-Rel Electronics Limited is an ISO-9001:2000 certified company. Industrial Variable Speed AC Drives is a state-of-art AC drive for use in all applications where robustness, dynamic performance, precision and power are required. The Industrial Variable Speed AC Drives has been designed to provide the best possible control under all circumstances and thus to ensure a high operational quality and availability for the entire lifetime of the system. It is available with innovative solutions and leading-edge technology for demanding applications and high powers.