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3-Phase Smart Electric Meter

Overview

An energy meter is a necessity for the Industrial and Green revolutions. The 3-phase or polyphase meter is used for heavy industrial and high electricity-consuming homes.

Despite the mechanical meter’s ruggedness, which led to market dominance even in modern times, the increasing demand for automatic meter reading (AMR) capability as well as the requirement of less susceptibility against tampering attempts drove the development of smart meters, electronic meters with enhanced, easier mechanisms for remote data acquisition and processing.

A tamper-proof and connected system provides a lot of advantages to users regarding information about their energy consumption.

System Benefits​:

  • Magnetic tamper-proof
  • High voltage operation
  • Last gasp power source
  • Remote data acquisition
  • 3-phase energy meter

Block Diagram

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16:9 AS044 AS044 AS044 Sheet.81 Sheet.82 Sheet.83 Sheet.84 Connector Arrow Connector Arrow.103 Connector Arrow.104 Connector Arrow.105 Connector Arrow.106 Connector Arrow.107 Connector Arrow.109 Connector Arrow.110 Connector Arrow.111 Connector Arrow.112 Connector Arrow.113 Connector Arrow.114 Connector Arrow.115 Connector Arrow.116 Connector Line Connector Line.118 Connector Line.119 Connector Line.120 Connector Line.121 Connector Line.122 Connector Line.123 Connector Line.124 Connector Line.125 Connector Line.126 Connector Line.127 Connector Line.128 Connector Line.129 Connector Line.130 Connector Line.131 Connector Line.132 Connector Line.133 Connector Line.134 Connector Line.135 Connector Line.136 Connector Line.137 Connector Line.138 Connector Line.139 Connector Line.140 Connector Line.141 Connector Line.142 Connector Line.143 Filter, Surge Protector and Rectifier Filter, Surge Protector and Rectifier Filter, Surge Protector and Rectifier Connector Line.146 Connector Line.147 Ground Sheet.149 Sheet.150 Sheet.151 Sheet.152 Signal Ground Sheet.187 Sheet.188 Sheet.189 Sheet.190 Sheet.191 Ground.192 Sheet.193 Sheet.194 Sheet.195 Sheet.196 Sheet.201 Sheet.202 Sheet.203 Sheet.204 Sheet.205 Darlington.131 Sheet.207 Sheet.208 Sheet.209 Sheet.210 Sheet.211 Darlington.131 EEPROM EEPROM EEPROM IrDA Connector IrDA Connector IrDA Connector LCD 11 x 8 LCD 11 x 8 LCD 11 x 8 Magnetic Tamper Magnetic Tamper Magnetic Tamper Sheet.240 Sheet.241 Sheet.242 Sheet.243 Darlington.131 Sheet.246 Sheet.247 Sheet.248 Sheet.249 Sheet.250 Darlington.131 Sheet.268 Sheet.263 Sheet.264 Sheet.265 Sheet.266 Sheet.267 Sheet.269 Sheet.270 Sheet.271 Sheet.272 Sheet.273 Sheet.274 Tri component Optical Isolator Optical Isolator Optical Isolator Optical Isolator Optical Isolator Signal Ground.280 Sheet.281 Sheet.282 Sheet.283 Sheet.284 Sheet.285 Sheet.286 Sheet.287 Sheet.288 Darlington.131 Sheet.290 Sheet.291 Darlington.254 Sheet.293 Sheet.294 Darlington.254 Sheet.296 Ground.297 Sheet.298 Sheet.299 Sheet.300 Sheet.301 Single Cell Sheet.314 Sheet.315 Line 1pt.1552 Line 1pt.1583 Ground.318 Sheet.319 Sheet.320 Sheet.321 Sheet.322 Case Switch Case Switch Case Switch Open Box Open Box Open Box Press Button Menu Press Button Menu Press Button Menu Sheet.334 Sheet.335 3 3 3 Sheet.333 Connector Line.341 Sheet.342 2 2 2 Sheet.344 Sheet.347 2 2 2 Sheet.349 Sheet.351 19 19 19 Sheet.353 Sheet.355 2 2 2 Sheet.357 Sheet.359 2 2 2 Sheet.361 Connected signals line Connector Arrow.365 Connector Arrow.366 Connector Arrow.367 Connector Line.370 Connector Line.371 Connector Line.372 Connector Line.374 Connector Line.375 Connector Line.376 Connector Arrow.377 Connector Line.378 Connector Line.379 Connector 1 Connector Line.382 Connector 1.383 Connector 1.384 Connector Arrow.385 Connector Line.386 Connector Line.387 Connector Arrow.388 Connector Line.390 Connector Line.391 Connector 1.392 Connector 1.393 Connector Line.394 Isolated GND Isolated GND IsolatedGND 5V 0.9Amax 5V/0.9Amax 5V/0.9Amax 5V 15mA 5V/15mA 5V/15mA 3.3V 3.3V 3.3V 3.3V 50mA 3.3V/50mA 3.3V/50mA 3.3V 3.3V 3.3V Connector Line.401 Connector Line.403 Connector Line.404 Connector Line.405 3.3V 1.5Amax 3.3V/1.5Amax 3.3V/1.5Amax 5V 1Amax 5V/1Amax 5V/1Amax Isolated GND Isolated GND IsolatedGND GND GND GND 3.3V/500mAmax 3.3V/500mAmax 3.3V/500mAmax Sheet.413 2 2 2 Sheet.415 Connector Line.416 Connector Line.417 Connector Line.418 BT2 BT2 BT2 GND GND GND GND GND GND + + + - - - 3.3V 10mA 3.3V/10mA 3.3V/10mA 3.3V 430mA 3.3V/430mA 3.3V/430mA GND GND GND Backlit LED Backlit LED Backlit LED 90V – 510V AC 90V – 510V AC 90V – 510V AC CT1 CT1 CT1 CT2 CT2 CT2 CT3 CT3 CT3 R R R Y Y Y B B B N N N CT4 CT4 CT4 750V DC 750V DC 750V DC Sheet.77 Sheet.78 Sheet.79 Sheet.80 Sheet.73 Sheet.74 Sheet.75 Sheet.76 Sheet.67 Sheet.64 Sheet.63 Sheet.65 Connector Line.446 Sheet.451 NFC NFC NFC LTE-M Module GM02S LTE-M Module GM02S LTE-M Module GM02S DC/DC Boost DC/DC Boost DC/DC Boost LDO LDO LDO Connector Line.452 Super Capacitor Super Capacitor Super Capacitor Battery Sheet.222 Sheet.223 Sheet.224 Connector 1.454 Connector 1.455 Sheet.461 Sheet.462 Sheet.463 Sheet.464 Connector Arrow.465 RS-485 RS-485 RS-485 MCU MCU MCU MCU I2C I2C I2C VRTC VRTC VRTC VBatt VBatt VBatt SAR-ADC SAR-ADC SAR-ADC VDD VDD VDD I2C I2C I2C UART UART UART LCD LCD LCD IRQ / I2C IRQ /I2C IRQ /I2C UART UART UART GPIO GPIO GPIO ∆ΣADC 24 bit ∆ΣADC 24 bit ∆ΣADC24 bit GPIO GPIO GPIO Flyback Flyback Flyback Flyback Logic Logic Logic

Flyback

Flyback & Forward Controllers

MCU

RA Arm Cortex-M MCUs

LDO

Linear Regulators (LDO)

DC/DC Boost

Buck-boost Regulators (Integrated FETs)

NFC

NFC

Optical Isolator

DC Input Single

RS-485

Standard RS-485/RS-422