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Energy Metering. ADE7923 Datasheet

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Energy Metering. ADE7923 Datasheet






ADE7923 Metering. Datasheet pdf. Equivalent




ADE7923 Metering. Datasheet pdf. Equivalent





Part

ADE7923

Description

Isolated Energy Metering



Feature


Data Sheet Isolated Energy Metering Chi pset for Polyphase Shunt Meters ADE7978 /ADE7933/ADE7932/ADE7923 FEATURES Fle xible I2C, SPI, and HSDC serial interfa ces Enables shunt current sensors in p olyphase energy meters Immune to magnet ic tampering Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, I EC 62053-22, IEC 62053-23, ANSI C12.20, and IEEE 1459 sta.
Manufacture

Analog Devices

Datasheet
Download ADE7923 Datasheet


Analog Devices ADE7923

ADE7923; ndards Compatible with 3-phase, 3- or 4- wire (delta or wye) meters and other 3- phase services Computes active, reactiv e, and apparent energy on each phase an d on the overall system Less than 0.2% error in active and reactive energy ove r Safety and regulatory approvals UL r ecognition 5000 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice 5A IEC 61010-1: 3.


Analog Devices ADE7923

00 V rms maximum working voltage VDE cer tificate of conformity DIN V VDE V 0884 -10 (VDE V 0884-10):2006-12 VIORM = 846 V peak Optional isolated (ADE7933/ADE7 932) or nonisolated (ADE7923) neutral a dynamic range of 2000 to 1 at TA = 25 °C APPLICATIONS Less than 0.1% error in voltage rms over a dynamic range of 500 to 1 at TA = 25°C Less than 0.25% error in current rm.


Analog Devices ADE7923

s over a dynamic range of 500 to 1 at TA = 25°C Power quality measurements inc luding total harmonic distortion (THD) Single 3.3 V supply Operating temperatu re: −40°C to +85°C Shunt-based pol yphase meters Power quality monitoring Solar inverters Process monitoring Prot ective devices Isolated sensor interfac es Industrial PLCs TYPICAL APPLICATION CIRCUIT PHASE PHASE P.

Part

ADE7923

Description

Isolated Energy Metering



Feature


Data Sheet Isolated Energy Metering Chi pset for Polyphase Shunt Meters ADE7978 /ADE7933/ADE7932/ADE7923 FEATURES Fle xible I2C, SPI, and HSDC serial interfa ces Enables shunt current sensors in p olyphase energy meters Immune to magnet ic tampering Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, I EC 62053-22, IEC 62053-23, ANSI C12.20, and IEEE 1459 sta.
Manufacture

Analog Devices

Datasheet
Download ADE7923 Datasheet




 ADE7923
Data Sheet
Isolated Energy Metering Chipset
for Polyphase Shunt Meters
ADE7978/ADE7933/ADE7932/ADE7923
FEATURES
Flexible I2C, SPI, and HSDC serial interfaces
Enables shunt current sensors in polyphase energy meters
Immune to magnetic tampering
Highly accurate; supports EN 50470-1, EN 50470-3,
IEC 62053-21, IEC 62053-22, IEC 62053-23, ANSI C12.20,
and IEEE 1459 standards
Compatible with 3-phase, 3- or 4-wire (delta or wye) meters
and other 3-phase services
Computes active, reactive, and apparent energy on each
phase and on the overall system
Less than 0.2% error in active and reactive energy over
Safety and regulatory approvals
UL recognition
5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice 5A
IEC 61010-1: 300 V rms maximum working voltage
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 846 V peak
Optional isolated (ADE7933/ADE7932) or nonisolated
(ADE7923) neutral
a dynamic range of 2000 to 1 at TA = 25°C
APPLICATIONS
Less than 0.1% error in voltage rms over a dynamic range
of 500 to 1 at TA = 25°C
Less than 0.25% error in current rms over a dynamic range
of 500 to 1 at TA = 25°C
Power quality measurements including total harmonic
distortion (THD)
Single 3.3 V supply
Operating temperature: −40°C to +85°C
Shunt-based polyphase meters
Power quality monitoring
Solar inverters
Process monitoring
Protective devices
Isolated sensor interfaces
Industrial PLCs
TYPICAL APPLICATION CIRCUIT
PHASE PHASE PHASE
NEUTRAL
A
B
C
ISOLATION
BARRIER
V1P
VM
IM PHASE A
ADE7932/
IP ADE7933
V2P
3.3V
GNDISO_A
GNDMCU
V1P
VM
IM PHASE B
ADE7932/
IP ADE7933
V2P
3.3V
GNDISO_B
GNDMCU
V1P
VM
IM PHASE C
ADE7932/
IP ADE7933
V2P
3.3V
ADE7978
ENERGY
METERING
IC
3.3V
I2C/HSDC OR SPI
IRQ0, IRQ1
GNDMCU
3.3V
GNDMCU
LOAD
GNDISO_C
GNDMCU
V1P
VM NEUTRAL
LINE
IM ADE7923
(OPTIONAL,
NONISOLATED)
IP
V2P
3.3V
GNDMCU
Figure 1. 3-Phase, 4-Wire Meter with Three ADE7933/ADE7932 Devices, One ADE7923, and One ADE7978
1 Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329; 6,262,600; 7,489,526; 7,558,080; and 8,892,933. Other patents are pending.
Rev. D
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Tel: 781.329.4700 ©2013–2018 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com




 ADE7923
ADE7978/ADE7933/ADE7932/ADE7923
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Typical Application Circuit ............................................................. 1
Revision History ............................................................................... 4
General Description ......................................................................... 5
Functional Block Diagrams............................................................. 6
Specifications..................................................................................... 8
System Specifications, ADE7978 and
ADE7933/ADE7932/ADE7923 .................................................. 8
ADE7978 Specifications ............................................................ 10
ADE7933/ADE7932 Specifications.......................................... 14
ADE7923 Specifications ............................................................ 17
Absolute Maximum Ratings.......................................................... 19
Thermal Resistance .................................................................... 19
ESD Caution................................................................................ 19
Pin Configurations and Function Descriptions ......................... 20
Typical Performance Characteristics ........................................... 25
Total Energy Linearity over Supply and Temperature........... 25
Fundamental Energy and RMS Linearity with Fifth
Harmonic over Supply and Temperature ................................ 26
Total Energy Error over Frequency.......................................... 27
RMS Linearity over Temperature and RMS Error over
Frequency .................................................................................... 28
Energy Linearity Repeatability ................................................. 29
Cumulative Histograms of ADC Gain Temperature
Coefficients.................................................................................. 30
Test Circuit ...................................................................................... 31
Terminology .................................................................................... 32
Theory of Operation ...................................................................... 35
ADE7933/ADE7932/ADE7923 Analog Inputs ...................... 35
Analog-to-Digital Conversion.................................................. 35
Current Channel ADC............................................................... 37
Voltage Channel ADCs.............................................................. 39
Changing the Phase Voltage Datapath .................................... 44
Reference Circuits ...................................................................... 44
Phase Compensation.................................................................. 45
Digital Signal Processor............................................................. 46
Power Quality Measurements ....................................................... 47
Zero-Crossing Detection........................................................... 47
Period Measurement.................................................................. 49
Phase Voltage Sag Detection ..................................................... 50
Peak Detection............................................................................ 51
Overvoltage and Overcurrent Detection ................................ 52
Neutral Current Mismatch........................................................ 53
Root Mean Square Measurement ................................................. 54
Current RMS Calculation ......................................................... 54
Voltage RMS Calculation .......................................................... 55
Voltage RMS in Delta Configurations ..................................... 56
Active Power Calculation .............................................................. 57
Total Active Power Calculation ................................................ 57
Fundamental Active Power Calculation.................................. 58
Active Power Gain Calibration................................................. 58
Active Power Offset Calibration............................................... 59
Sign of Active Power Calculation............................................. 59
Active Energy Calculation ........................................................ 59
Integration Time Under Steady Load ...................................... 60
Energy Accumulation Modes ................................................... 61
Line Cycle Active Energy Accumulation Mode ..................... 61
Reactive Power Calculation .......................................................... 63
Total Reactive Power Calculation ............................................ 63
Fundamental Reactive Power Calculation .............................. 63
Reactive Power Gain Calibration ............................................. 63
Reactive Power Offset Calibration ........................................... 63
Sign of Reactive Power Calculation ......................................... 64
Reactive Energy Calculation..................................................... 64
Integration Time Under Steady Load ...................................... 65
Energy Accumulation Modes ................................................... 66
Line Cycle Reactive Energy Accumulation Mode ................. 66
Apparent Power Calculation ......................................................... 67
Apparent Power Gain Calibration............................................ 67
Apparent Power Offset Calibration ......................................... 67
Apparent Power Calculation Using VNOM ........................... 67
Apparent Energy Calculation ................................................... 68
Integration Time Under Steady Load ...................................... 69
Energy Accumulation Mode..................................................... 69
Line Cycle Apparent Energy Accumulation Mode................ 69
Power Factor Calculation and Total Harmonic Distortion
Calculation ...................................................................................... 70
Power Factor Calculation .......................................................... 70
Total Harmonic Distortion Calculation.................................. 71
Waveform Sampling Mode............................................................ 72
Rev. D | Page 2 of 125




 ADE7923
Data Sheet
Energy-to-Frequency Conversion.................................................73
TERMSELx[2:0] Bits...................................................................73
CFxSEL[2:0] Bits .........................................................................73
Energy-to-Frequency Conversion Process ..............................74
Synchronizing Energy Registers with the CFx Outputs ........74
Energy Registers and CFx Outputs for Various Accumulation
Modes ...........................................................................................75
Sign of Sum of Phase Powers in the CFx Datapath ................77
No Load Condition .........................................................................78
No Load Detection Based on Total Active and Reactive
Powers...........................................................................................78
No Load Detection Based on Fundamental Active and
Reactive Powers ...........................................................................78
No Load Detection Based on Apparent Power .......................79
Interrupts..........................................................................................80
Using the Interrupts with an MCU...........................................81
Power Management.........................................................................82
DC-to-DC Converter .................................................................82
Magnetic Field Immunity ..........................................................83
Power-Up Procedure ..................................................................84
Initializing the Chipset ...............................................................84
Hardware Reset............................................................................85
ADE7978/ADE7933/ADE7932 and ADE7923 Chipset
Software Reset..............................................................................86
ADE7933/ADE7932 and ADE7923 Software Reset ...............86
ADE7978/ADE7933/ADE7932/ADE7923
Low Power Mode ........................................................................86
Applications Information...............................................................87
Differences Between the ADE7923 and the
ADE7933/ADE7932 ...................................................................87
ADE7978, ADE7933/ADE7932 and ADE7923 in Polyphase
Energy Meters..............................................................................87
ADE7978 Quick Setup as an Energy Meter ............................90
Bit Stream Communication Between the ADE7978 and the
ADE7933/ADE7932 and ADE7923..........................................91
ADE7978, ADE7933/ADE7932, and ADE7923 Clocks ........92
Insulation Lifetime......................................................................92
Layout Guidelines .......................................................................93
ADE7978 and ADE7933/ADE7932 Evaluation Board ..........96
ADE7978 Die Version ................................................................96
Serial Interfaces ...............................................................................97
Serial Interface Selection............................................................97
Communication Verification ....................................................97
I2C-Compatible Interface...........................................................97
SPI-Compatible Interface.........................................................100
HSDC Interface .........................................................................102
Checksum Register ...................................................................104
Register List....................................................................................105
Outline Dimensions......................................................................124
Ordering Guide .........................................................................125
Rev. D | Page 3 of 125



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