Memory circuit in a relay protection device

Metering and protection system for an A.C. power system

Method and apparatus for compensation of phasor estimations

Method and apparatus for detecting fault currents in electrical

Method and apparatus for detecting faults in a resolver

Method and apparatus for energizing an electrical load

Method and apparatus for fault and/or fault direction detection

Method and apparatus for fault direction determination

Method and apparatus for interrupting a current carrying path in

Method and apparatus for interrupting a current carrying...

Method and apparatus for limiting current surge upon transfer of

Method and apparatus for substantially reducing electrical...

Method and apparatus for the distance-selective fault monitoring

Method and apparatus for the monitoring of electric lines

Method and apparatus for the protection of a thyristor power con

Method and apparatus providing a multi-function terminal for...

Method and apparatus to protect solar cells from...

Method and device for finding faults on electric lines by the pr

Method for electrical and thermal protection of output devices o

Method for evaluating operability of filter components in power