| 7675720 |
Motor protection using accurate slip calculations |
Subhash C. Patel |
2010-03-09 |
| 7161778 |
Rotor thermal model for use in motor protection |
— |
2007-01-09 |
| 7123457 |
System for transitioning to the trip threshold for the start condition thermal model for a motor protection relay |
Edmund O. Schweitzer, III |
2006-10-17 |
| 6757146 |
Instantaneous overcurrent element for heavily saturated current in a power system |
Gabriel Benmouyal, Armando Guzman-Casillas |
2004-06-29 |
| 6356421 |
System for power transformer differential protection |
Armando Guzman-Casillas, Hector Altuve-Ferrer, Gabriel Benmouyal |
2002-03-12 |
| 5793595 |
Multi-application relay for power systems |
Edmund O. Schweitzer, III |
1998-08-11 |
| 5436784 |
Motor protection relay using thermal models |
Edmund O. Schweitzer, III |
1995-07-25 |
| 4914386 |
Method and apparatus for providing thermal protection for large motors based on accurate calculations of slip dependent rotor resistance |
— |
1990-04-03 |
| 4315295 |
Timing circuit for an overcurrent relay |
— |
1982-02-09 |
| 4259706 |
Solid state relay |
— |
1981-03-31 |
| 4204237 |
Solid state transformer differential relay |
— |
1980-05-20 |