Error test system and method for digitized metering device
A technology of measuring devices and testing systems, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problems of inability to provide two-way branch current and current output, clock inaccuracy, digital metering device error out-of-tolerance error stability, etc. question
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[0045] Below in conjunction with specific embodiment the present invention is described in further detail, described is the explanation of the present invention rather than limitation, and wherein said tradition all refers to the prior art that utilizes analog quantity during work, is opposite to digital quantity.
[0046] The error testing system of the digital metering device of the present invention includes a digital metering device, a standard traditional current transformer, a three-phase electronic transformer calibrator, a three-phase standard digital electric energy meter, a three-phase standard traditional electric energy meter and a load for outputting electric energy The three-phase test power supply; the digital metering device includes a standard clock source for providing a standard clock synchronization signal, two sets of three-phase current transformers and a current merging unit for digitizing the current analog output of the three-phase test power supply. , ...
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