Wiring standards Single phase, 2-wire 120V or 220V Single phase, 3-wire 220V between phases ; 110V between phase-neutral.

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Presentation transcript:

Wiring standards Single phase, 2-wire 120V or 220V Single phase, 3-wire 220V between phases ; 110V between phase-neutral Three phases, 3-wire No neutral ; 220V between phases Three phases, 4-wire 220V between phase-neutral ; 380V phase-phase

Fault Tolerant Energy Metering AD monitor phase and neutral currents

Anti-Tamper 2 wire, 1  Meter Example AD7751: 1  Real Pwr, anti-pilfer, Motor Drive AD7751 Gain Calibration +5V ac to dc Power Supply Reverse Polarity LED ADC2 ADC1A Neutral Phase Residential Outllets Line Voltage Stepdown I Phase <I Neut Digital Comparator * X I Neut I Phase PGA I Phase >I Neut V ADC1B Calibration LED Fault Detection LED Digital- to- Frequency Load Side * Note: Digital Comparator Selects > of I Phase or I Neutral PGA Input Side Counter kW-H

Basic 2 wire, 1  Meter Example AD7750/5: 1  Real Pwr, Motor Drive output Residential Outllet AD7750/5 X Digital- to- Frequency ADC1 ADC2 Line Voltage Stepdown Gain Calibration +5V ac to dc Power Supply Neutral Phase Reverse Polarity LED Input Side Load Side Counter kW-H PGA Calibration LED

ADE7756/3:  Processor based Meter Example (remote reading or multi-tariff billing) Residential Outllet ADE7756/3 X Registers & Serial Interface ADC1 ADC2 +5V ac to dc Power Supply Neutral Phase Input Side Load Side PGA Calibration LED DTF Calibration MCU & LCD Driver LCD Display EEPROMComm