- ADE7880, capable of measuring up to the 63rd harmonic and achieving better than 1% accuracy over a dynamic range of 2000:1
October 5, 2011 – Analog Devices, Inc. ( www.analog.com ), a global leader in high-performance semiconductors and data converters, today introduced an energy metering integrated circuit (IC) that provides real-time harmonic analysis capabilities to energy meters and power quality monitoring equipment. Designed for multiphase meters, the ADE7880 energy metering IC provides complete harmonic analysis, including magnitude and phase information, and can measure up to the 63rd harmonic, achieving better than 1% accuracy over a 2000:1 dynamic range.

This new product is the first to feature ADI's proprietary ARTM (Adaptive Real-time Monitoring) harmonic analysis technology, which not only eliminates the need for sophisticated digital signal processing development tailored to each customer, but also eases requirements for system microcontrollers.

“Harmonics are a growing concern in energy systems worldwide because excessive harmonic currents can cause transformer overheating and false tripping of protective relays,” said Ronn Kliger, director of Analog Devices’ Energy Group. “When sources such as loads and appliances connected to the power line consume or generate harmonic power, harmonics can dramatically degrade power quality.
The ADE7880 enables smart grid systems to accurately monitor power quality degradation caused by harmonics, allowing power companies and their customers to take appropriate remedial action when necessary.

ADD Grup, a global smart meter manufacturer, recently selected the ADE7880 energy metering IC to implement its new three-phase industrial meter. “Our advanced industrial meters needed to combine harmonic analysis capabilities with traditional energy metering and power quality functionality,” said Vladimir Culiuc, head of ADD Group’s Electric Meter Design Business Unit. “We chose the ADE7880 energy metering IC as our design-in process because it allowed us to significantly reduce software development and validation time, enabling us to meet tight time-to-market requirements.”

As millions of smart meters are installed worldwide, the importance of power quality monitoring continues to grow. According to Pike Research, there will be more than 250 million smart meters installed worldwide by 2015. Smart meters accurately measure the amount of electricity generated or consumed, and communicate with local power companies for power monitoring, billing, and more. In this way, smart meters can be used as distributed monitoring devices because they combine communication and power quality analysis functions. It can also be used as an important diagnostic tool, as well as having value as a fixed asset for power companies.

Key specifications of the ADE7880 energy metering IC
• Pin-compatible with the popular ADE78xx family of high-accuracy energy metering ICs designed for 3-phase configurations
• Application of ARTM technology automatically tracks changes in the fundamental frequency, eliminating the impact of frequency changes on measurement accuracy
• Calculate voltage and current rms, power factor, active/reactive/apparent power for each harmonic
• Calculate the harmonic distortion ratio as a ratio of Total Harmonic Distortion (THD) + Noise (N) and the fundamental frequency
• Provides better than 0.2% real/reactive power accuracy over a dynamic range of 5000:1. Accuracy better than 0.1% over a dynamic range of 1000:1 with gain compensation alone
• Integrated with 7 sigma-delta ADCs, digital integrator, voltage reference, and all metering signal processing functions, suitable for class 0.2 meters

Pricing and Availability

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