| 8390298 |
Method for determination of a setting value which indicates a ground impedance, and measurement device |
Matthias Kereit |
2013-03-05 |
| 8271214 |
Method for increasing the sensitivity of a differential protection system |
— |
2012-09-18 |
| 6442493 |
Method of detecting a fault in a monitored section of an electric transmission line using distance protection techniques |
Andreas Jurisch |
2002-08-27 |
| 6329806 |
Process for determining the harmonic oscillations of the fundamental component of an electrical signal |
Thomas Reck |
2001-12-11 |
| 6308139 |
Digital process for determining the effective value of a periodic electric test signal |
Thomas Reck |
2001-10-23 |
| 6046895 |
Distance protection method |
Andreas Jurisch |
2000-04-04 |
| 5889398 |
Process for determining the harmonic oscillations of the fundamental component of an electrical signal |
Thomas Reck |
1999-03-30 |
| 5742156 |
Digital process for obtaining a measured parameter from an electric signal |
— |
1998-04-21 |
| 5471133 |
Digital device for measuring the frequency of an electrical signal |
— |
1995-11-28 |
| 5412386 |
Arrangement for converting a plurality of electrical analog measurement signals that are applied simultaneously to its input terminals into a corresponding plurality of digital signals, using an antialiasing filter on the inputs |
— |
1995-05-02 |