Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Comparison signal error detector for protective relay system

Comparison signal error detector for protective relay system

US Patent 4751604 · Granted Jun 14, 1988

Estimated economic value: $13,944,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Transformer differential relay1997
Ripple attenuator for AC power transmission line protective relays1989
Out-of-step blocking unit1989
Negative and zero sequence directional overcurrent unit for AC power transmissio1989
Positive sequence distance relay for AC power transmission line protection1989
Faulted phase selector for single pole tripping and reclosing schemes1989
Ground distance relay for AC power transmission line protection1987
Overvoltage directional relay1984
Reactance relay1984
Positive sequence undervoltage distance relay1984
Phase relay for AC power transmission line protection1983
Static distance relays with improved polarizing signal1982