Abstract: Systems, methods, and apparatuses are disclosed for electricity meters to detect electricity theft. An indication of electricity theft may be generated if after an occurrence of a first power outage, the meter detects received energy and if after the occurrence of a subsequent power outage, the meter detects delivered energy. The utility company may then be alerted to the indication of the electricity theft.

Abstract: A method is described for reprogramming a meter, including configuring the meter to accept user code reprogramming at meter power-up and, at power-up, providing user code reprogramming to the meter control program. The meter is configured to accept user code at power-up by executing processor boot loader code providing for optional loading of user code into the processor memory upon processor boot-up. The meter user thus can change metering functions and options without disassembling the meter or removing it from service.

Abstract: An electricity meter which, in one embodiment, includes a digital signal processor configurable for generating energy measurements for a plurality of meter form types and connections is described. In the one embodiment, the meter includes voltage and current sensor for generating signals representative of current and voltage at a load, and the digital signal processor (DSP) is coupled to the voltage and current sensors. The DSP includes a memory, and a plurality of selectable instruction sets corresponding to respective meter form types are stored in the DSP memory. The form types includes meter ANSI form 9 and meter ANSI form 16 type forms, and the instruction sets include processing steps to be executed to determine line voltages and line currents for respective meter form types. The meter also includes a microcomputer coupled to the DSP for receiving data generated by the DSP.

Abstract: A disk analog display for a solid state electricity meter includes a series of segments that illuminate sequentially to indicate the direction of current flowing through the meter and the rate at which energy is being consumed by the load. The sequential illumination provides notice to a technician that the meter is completing the measurement of one energy consumption unit so that the measurement by the meter of one energy consumption unit can be accurately timed. In one embodiment, there are three segments that illuminate sequentially to indicate that the meter is completing measurement of one energy consumption unit. The segments then simultaneously blank to indicate that the meter has completed the measurement of one energy consumption unit.