Compact test system for three-phase tests, can be used as a universal tool for testing digital protection relays. Output of control commands via binary outputs ARTES 460 | 600 test systems can address the protection device under test with binary signals as well as with analog measurement quantities. These binary signals are generated simultaneously with the analog quantities and can be used as control commands for the protection device during the test procedure.


he DIFF-Monitor enables the tripping characteristic and operating times of differential protection relays to be checked. Test values are calculated automatically with reference to the nominal data of the transformer and the HV/LV data. With transformers using phase-rotation vector groups, for example YD 5, the programme performs a phase adjustment between the currents of the high-voltage and low-voltage side which are to be compared. In addition to the vector group adjustment, an amplitude adjustment is also performed.