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ADE7978 Fiches technique(PDF) 1 Page - Analog Devices

No de pièce ADE7978
Description  Isolated Energy Metering Chipset for Polyphase Shunt Meters
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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ADE7978 Fiches technique(HTML) 1 Page - Analog Devices

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Isolated Energy Metering Chipset
for Polyphase Shunt Meters
Data Sheet
ADE7978/ADE7933/ADE7932
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
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
a dynamic range of 2000 to 1 at TA = 25°C
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 THD
Single 3.3 V supply
Operating temperature: −40°C to +85°C
Flexible I2C, SPI, and HSDC serial interfaces
Safety and regulatory approvals (pending)
UL recognition
5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 61010-1: 400 V rms
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 846 V peak
APPLICATIONS
Shunt-based polyphase meters
Power quality monitoring
Solar inverters
Process monitoring
Protective devices
Isolated sensor interfaces
Industrial PLCs
TYPICAL APPLICATION CIRCUIT
NEUTRAL
PHASE
C
ISOLATION
BARRIER
LOAD
PHASE
A
EARTH
PHASE
B
PHASE A
ADE7932/
ADE7933
IP
IM
V1P
VM
V2P
GNDMCU
GNDISO_A
3.3V
PHASE B
ADE7932/
ADE7933
IP
IM
V1P
VM
V2P
GNDMCU
GNDISO_B
3.3V
PHASE C
ADE7932/
ADE7933
IP
IM
V1P
VM
V2P
GNDMCU
GNDISO_C
3.3V
NEUTRAL
LINE
ADE7932/
ADE7933
(OPTIONAL)
IP
IM
V1P
VM
V2P
GNDMCU
GNDISO_N
3.3V
ADE7978
ENERGY
METERING
IC
GNDMCU
3.3V
3.3V
GNDMCU
I2C/HSDC OR SPI
IRQ0, IRQ1
Figure 1. 3-Phase, 4-Wire Meter with Four ADE7933/ADE7932 Devices and One ADE7978
1
Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329; 6,262,600; 7,489,526; and 7,558,080. Other patents are pending.


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