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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADE7752AR датащи(PDF) 23 Page - Analog Devices |
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ADE7752AR датащи(HTML) 23 Page - Analog Devices |
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23 / 24 page  ADE7752/ADE7752A Rev. C | Page 23 of 24 NEGATIVE POWER INFORMATION The ADE7752 detects when the current and voltage channels of any of the three phase inputs have a phase difference greater than 90°: ϕA or ϕB or ϕ B C > 90°. This mechanism can detect wrong connection of the meter or generation of active energy. The REVP pin output goes active high when negative power is detected on any of the three phase inputs. If positive active energy is detected on all the three phases, REVP pin output is low. The REVP pin output changes state at the same time a pulse is issued on CF. If several phases measure negative power, the REVP pin output stays high until all the phases measure positive power. If a phase has gone below the no load threshold, REVP detection on this phase is disabled. REVP detection on this phase resumes when the power returns out of no load condition. See the No Load Threshold section. |
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