초록 ▼

A portable energy meter test system for testing energy meters and other related instrumentation on-site is disclosed. The test system utilizes waveform generating circuitry to generate and transmit electrical waveforms to an energy meter to be tested, and sensing circuitry for sensing electrical cha

A portable energy meter test system for testing energy meters and other related instrumentation on-site is disclosed. The test system utilizes waveform generating circuitry to generate and transmit electrical waveforms to an energy meter to be tested, and sensing circuitry for sensing electrical characteristics corresponding to the transmitted electrical waveform. The test system includes a processor for evaluation and control of the testing procedure. A graphic touch screen is coupled to the processor for displaying information about the energy meter and for displaying test options to the user and allowing the user to control the testing process by touching the screen.

대표청구항 ▼

[ What is claimed is:] [1.]1. A portable electrical meter tester for testing electrical metering devices at a test site, where the test site includes a current source and/or a voltage source, the electrical metering device being connected with the current source and/or the voltage source of the test

[ What is claimed is:] [1.]1. A portable electrical meter tester for testing electrical metering devices at a test site, where the test site includes a current source and/or a voltage source, the electrical metering device being connected with the current source and/or the voltage source of the test site, the portable electrical meter tester comprising:measurement circuitry to determine the accuracy of the electrical metering device;terminals connected to the measurement circuitry that releasably connect the electrical meter tester to the electrical metering device; andcircuitry connected to the terminals to monitor for back feed voltage, where the circuitry electrically isolates the electrical meter tester from the current source and the voltage source of the test site if back feed voltage is detected and connects the electrical meter tester to the test site when no back feed voltage is detected.