The tester has a built-in high-precision programmable power supply, capable of simulating various operating conditions of a power system. The SMRT46R is a multipurpose, lightweight, field portable test set capable of testing various electromechanical, solid-state and microprocessor-based protective relays, motor overload relays, and similar protective devices. You can manually control the SMRT46R test system with Megger's new Smart. A relay protection tester is a core device used to verify the performance of relay protection devices. Its working principle can be summarized as “signal excitation – behavior detection. Meet all test requirements on site. The instrument has standard four phase voltage and three-phase current output. It can test not only various traditional relays and protection devices, but also various modern microcomputer protections, especially for transformer differential protection and. The device can be equipped with a built-in GPS synchronization card (optional) and connected with PC through RS232 port to realize the synchronous adjustment test of two testers in different places. Before the test, the grounding wire jack must be. Primary injection testing of protective relay equipment and circuit breakers Simplify all types of switchgear and current transformer commissioning, earth/ground grid, circuit breaker testing,.