ADSST-EM-3035 Datasheet, PDF (1/20 Pages) Analog Devices – SALEM Three-Phase Electronic Energy Meter

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FEATURES
IEC 687, Class 0.5 and Class 0.2 Accuracy
ANSI C12.1
IEC 1268, Requirements for Reactive Power
Configurable as Import/Export or Import Only
Simultaneous Measurement of:
Active Power and Energy—Import and Export
Reactive Power and Energy
Apparent Power
Power Factor for Individual Phases and Total Frequency
RMS Voltage for All Phases
RMS Current for All Phases
Harmonic Analysis for Voltage and Current
All Odd Harmonics up to 21st Order
Interface with a General Purpose Microcontroller
User-Friendly Calibration of Gain Offset and Phase and
Nonlinearity Compensation on CTs (Patent Pending)
Two Programmable Output E-Pulses
Programmable E-Pulse Constant from 1,000 Pulses/kWh
to 20,000 Pulses/kWh
15 kHz Sampling Frequency
Tamper-Proof Metering
Single 5 V Supply
GENERAL DESCRIPTION
The ADSST-EM-3035 Chipset consists of a fast and accurate
6 channel, 16-bit sigma-delta analog-to-digital converter
ADSST-73360AR (ADC), an efficient digital signal processor
ADSST-2185KST-133 (DSP), and Metering Software. The
ADC and DSP are interfaced together to simultaneously acquire
voltage and current samples on all the three phases and perform
mathematically intensive computations to accurately calculate
the Powers, Energies, Instantaneous Quantities, and Harmonics.
The chipset could be interfaced to any general-purpose micropro-
cessor to develop state of the art polyphase or Tri-vector energy
metering solution in accordance with IEC 1036, IEC 687, or
ANSI C12.1.
All calibrations are done in digital domain and no trimming
potentiometers are required.
SALEM^® Three-Phase
Electronic Energy Meter
ADSST-EM-3035
FUNCTIONAL BLOCK DIAGRAM
SMPS
LCD DISPLAY
RESISTOR
BLOCK
DSP
ADC
SPI BUS
CT
ADSST-EM-3035 FLASH
CT
CHIPSET
CT
RTC
␮C
BUTTONS
OPTO
RS-232
SALEM is a registered trademark of Analog Devices, Inc.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
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© Analog Devices, Inc., 2002