Graphical energy information display system having a menu for user selection of energy related information for an AC load control device

A graphical energy information display system having a menu for user selection of energy related information for an AC load control device, comprising:

• a device to monitor AC electrical load usage of a load using a voltage shifter coupled to a sensor to bias the voltage above a ground potential by a predetermined voltage to produce a full-wave biased voltage signal;
• a graphical display device connected to said device to monitor AC electrical load usage, said graphical display device adapted so as to graphically display indicia and at least one parameter of the AC electrical load usage of the load said parameters being displayed as a waveform;
• menu structure to display a plurality of selections on said graphical display device, each of said plurality of selections representing at least one parameter of the AC electrical load usage;
• menu selection structure to select at least one of said plurality of selections so as to cause said graphical display device to graphically present the power related signal representing said at least one parameter of the AC electrical load usage associated with said selections;
• and
• a circuit protective device to interrupt electrical power to the load responsive to said at least one parameter of the AC electrical load usage.

A graphical energy information display system having a menu for user selection of energy related information for an AC load control device, comprising:

• a circuit protective device for interrupting electrical power to a load;
• first means for monitoring AC electrical load usage of a load comprising a first means for controlling said circuit protective device and a second means for producing a plurality of signals representative of at least one of a current, a voltage and a power related characteristic of the load, the second means for producing a plurality of signals including a voltage shifter coupled to a sensor to bias the voltage above a ground potential by a predetermined voltage to produce a full-wave biased voltage signal;
• menu means for displaying a plurality of indicia on a graphical display device, each of said plurality of indicia representing at least one parameter of the AC electrical load usage;
• menu selection means for selecting at least one of said plurality of indicia so as to cause the graphical display to graphically present said at least one parameter of the AC electrical load usage associated with said indicia;
• and
• a graphical display device connected to said means for monitoring AC electrical load usage and adapted so as to graphically display at least one parameter of the AC electrical load usage of the load as a signal representation, said graphical display device comprising an energy information means connected to said second means for receiving and processing and storing said plurality of signals and for producing graphics related output image signals, and a display means connected to said energy information means and adapted to receive said graphics related output image signal for producing graphic images in a combination of waveform and histogram which are viewable by the user.