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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AN3157 Fiches technique(PDF) 13 Page - STMicroelectronics |
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AN3157 Fiches technique(HTML) 13 Page - STMicroelectronics |
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13 / 26 page  AN3157 Experimental results Doc ID 17105 Rev 1 13/26 4.2 Typical phase energy measurement accuracy 4.2.1 Test with only one phase load at PF = 1 This single phase energy measurement has been carried out in the following conditions: VR = 230 [VRMS] IR = I [ARMS] PF = 1 Phases S and T not connected. Table 6. Limits for class 1 meters: poly-phase meters with symmetrical voltages and balanced loads at PF = 1 I (A) % of In Error (%) 2*In 200% ± 1% In 100% ± 1% 0.2*In 20% ± 1% 0.1999*In 19.99% ± 1% 0.1*In 10% ± 1% 0.0999*In 9.999% ± 1.5% 0.05*In 5% ± 1.5% Table 7. Phase energy measurement I (A) % of In Error (%) 10 200% 0.026% 8 160% 0.034% 5 100% -0.006% 2 40% -0.049% 1 20% -0.069% 0.5 10% -0.062% 0.2 4% -0.060% |
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