A phasor monitoring system and apparatus for use with a distribution system for electricity wherein periodic three phase electricity is distributed in a plurality of circuits. The phasor monitoring apparatus comprises a phasor transducer that has an input that receives analog signals representative of...http://www.google.de/patents/US20030220752?utm_source=gb-gplus-sharePatent US20030220752 - Apparatus and system for protection, control, and management of electricity distribution systems using time synchronization
