PRODUCTS & SOLUTIONS
- Measuring and Test Systems
- Circuit Breaker Testing
- Resistance Measurement
- Protection Relay Testing
- Meter Testing
- Power Quality Measurement & Digital Fault Recording
- Power Sources
- Engineering Services
- Catalytic Converter Measurement
- Wafer Edge Profile Measurement
- Vacuum Inspection
- Training Courses
The 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 of course also performed. Test points can be defined numerically or using the mouse in the Idiff/Istab characteristic display. The reaction of the device under test is recorded during the test. Test evaluation is performed with reference to the stabilization characteristic of the differential protection device.