Model t200a (250aac, 500vac, ac/dc current) can be used to test many types of relays, including high burden relay and ct. Operation is easy, no much training is required. High power current source for high burden relay test Capable of testing differential relay with two independent current sources Capable of testing directional relay with adjustable phase angle In-built ammeter and voltmteter 120s output time at 250a Rotating mouse control and quick control buttons Large lcd display Many ready test modules for automatic test applications (secondary injection test set, relay tester, single phase relay test set, universal tester)