Abstract:
An electronic energy meter senses input voltage and current signals and processes them to generate a plurality of power measurements. The meter includes a processing system (14/16) for selecting one of the plurality of power measurements and for generating a pulsed test signal related to the selected power measurement for testing the operation of the meter, and an optical communications port (40) coupled to the processing system for transmitting the pulsed test signal from the meter to a testing device external to the meter.
Abstract:
An electronic energy meter senses input voltage and current signals and processes them to generate a plurality of power measurements. The meter includes a processing system (14/16) for selecting one of the plurality of power measurements and for generating a pulsed test signal related to the selected power measurement for testing the operation of the meter, and an optical communications port (40) coupled to the processing system for transmitting the pulsed test signal from the meter to a testing device external to the meter.
Abstract:
An apparatus for electronically metering electrical energy, said electrical energy comprising voltage and current characteristics, wherein voltage and current signals representative of said voltage and current characteristics are provided. The apparatus comprises a first processor, connected to receive said voltage and current signals, for determining electrical energy from said voltage and current signals and for generating an energy signal representative of the electrical energy determination, said first processor comprising a memory for the storage of instructions, said first processor performing electrical energy determinations in response to the execution of said instructions. A modification means, is connected to said first processor, for modifying the instructions executed by said first processor; and an optical port, is connected to said modification means, for receiving and transmitting radiant energy signals; and an option connector, is connected to said modification means, for receiving and transmitting electrical signals, wherein an execution signal is received by one of said optical port and said option connector to modify the instructions executed by said first processor.
Abstract:
An apparatus for electronically metering electrical energy, said electrical energy comprising voltage and current characteristics, wherein voltage and current signals representative of said voltage and current characteristics are provided. The apparatus comprises a first processor, connected to receive said voltage and current signals, for determining electrical energy from said voltage and current signals and for generating an energy signal representative of the electrical energy determination, said first processor comprising a memory for the storage of instructions, said first processor performing electrical energy determinations in response to the execution of said instructions. A modification means, is connected to said first processor, for modifying the instructions executed by said first processor; and an optical port, is connected to said modification means, for receiving and transmitting radiant energy signals; and an option connector, is connected to said modification means, for receiving and transmitting electrical signals, wherein an execution signal is received by one of said optical port and said option connector to modify the instructions executed by said first processor.