Multipurpose, light and portable protection relay tester - FREJA 546R

About Multipurpose, light and portable protection relay tester - FREJA 546R

The FREJA 546R is a versatile and portable protection relay tester designed for accurate and efficient verification of protection relays in electrical power systems. Built to support both field and laboratory applications, this test set delivers reliable secondary injection testing for a wide range of protection devices, including numerical, electromechanical, and static relays. With precise control of current, voltage, phase angle, and frequency, the FREJA 546R enables engineers to simulate real operating conditions and validate relay performance with high accuracy.

Equipped with multiple current and voltage output channels, intuitive user interface, and strong measurement capabilities, the FREJA 546R simplifies the testing of overcurrent, earth fault, differential, and distance protection schemes. Its compact, lightweight design ensures easy transport between substations and industrial sites while maintaining rugged field readiness. This relay tester also supports timing analysis and logic verification, making it an essential tool for maintenance, commissioning, and routine protection testing in power utilities and industrial networks.