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Smart Energy Meter Designs To Help You Save Electricity!

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Smart Energy Meter Designs To Help You Save Electricity!

Do you know how much energy you spend to do a wash, boil a kettle or heat your home? If you need to keep on top of your electricity bills, you need to replace your traditional electricity meter with a smart energy meter. Using a smart energy display, these allow consumers to control their energy consumption by choosing cost per hour, once a day or once a month. Most smart meters automatically send your bills digitally to the energy supplier, and also offer consumers a smart way of paying either online or using smartphone apps.

If you want to design your own smart energy meter to manage your energy use and save money, here we have put together some industry-standard reference designs of smart 3-phase energy meters that can accurately measure currents and voltages on each single phase along with providing many advanced features. These include fast digital calibration, protection against meter tampering and theft, remote turn-on and turn-off, and more. Each design is equipped with necessary documentation such as user guides, application notes, schematics and bill of materials.

  • Low-cost Energy Meter Which Can Detect External Tamper Attempts: If you are looking for an accurate and cost-effective electricity meter, here is a reference design from Freescale which accurately measures energy, apart from detecting and continuing to measure the active energy consumed reliably even when subject to external tamper attempts. For precision measurements, the design uses a Kinetis KM3x_256 series MCU, a high-performance analog front end (24- bit AFE) and a programmable gain amplifier (PGA). A cost-effective shunt-sensing circuit cuts down cost. Click here for detailed Reference Design
  • Flexible E-Meter For Simple/Advanced Measurements: If you need to perform advanced energy measurements, this reference design from Microchip can help you out. The design uses an advanced dsPIC MCU with a DSP engine to reduce overall meter cost and calculate a large number of quantities such as: Total Active Power, Total Reactive Power, Total Apparent Power, Total Power Factor, Total Active Energy, Four-quadrant Reactive Energy, Voltage/current Harmonic Content Of Each Phase, and more. For simple measurements, this meter can be configured as a simple active power only meter. Click here for detailed Reference Design

MCP3909RD-3PH3

  • Multi-fuctional E-meter With Easy Calibration Software: Here is an accurate and multi-functional E-meter design from Maxim Integrated which meets the critical accuracy and electric fast transient (EFT) requirements of modern E-meters, and also includes a PC software for configuration and calibration of the meter. The meter comes with advanced monitoring features like power factors, vector sum, and harmonic components apart from measuring simple parameters like active and reactive powers. Click here for detailed Reference Design

4663Fig00

  • Low-Cost E-meter With an Accuracy Class of 0.5: Here is a low-cost and accurate E-meter from TI meeting the accuracy requirements of Class 0.5 meters. The design measures all parameters including active and reactive power and energy, RMS current and voltage of all phases, power factor, and line frequency. The core IC of the system is a MSP430F449 smart meter SoC that is well-suited for poly phase utility metering applications. The design optimises cost with a low-cost capacitive drop-down power supply and an ultra-low-power software RTC. Click here for detailed Reference Design
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