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 ▼

[ We claim:] [1.] A portable energy meter tester for testing energy meters, and other related metering instrumentation, having a power supply with a boost converter for converting an AC input voltage to a DC output voltage, comprising:a rectifier circuit ;an inductor coupled to said rectifier circui

[ We claim:] [1.] A portable energy meter tester for testing energy meters, and other related metering instrumentation, having a power supply with a boost converter for converting an AC input voltage to a DC output voltage, comprising:a rectifier circuit ;an inductor coupled to said rectifier circuit;a capacitor coupled through a diode to said inductor;a first solid state transistor coupled to said inductor and coupled through said diode to said capacitor;a second solid state transistor in parallel with said first solid state transistor, and coupled to said inductor and coupled through said diode to said capacitor;a first drive circuit connected to and controlling said first solid state transistor for turning on and off said first transistor;a second drive circuit connected to and controlling said second solid state transistor for turning on and off said second transistor;said first drive circuit initially turning on said first solid state transistor, and thereby placing said boost converter of said portable energy meter tester into a conducting state, said second drive circuit turning on said second solid state transistor, said second drive circuit turning off said second transistor, and said first drive circuit turning off said first transistor, thereby placing said boost converter of said portable energy meter tester into a non-conducting state.