Three-Phase Power Meter Reference Design

THREE-PHASE-POWER-METER

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The three-phase power meter reference design is used for measurement and registration of active and reactive energy in three-phase networks for direct connection. It is precertified according to European EN50470- 1, EN50470-3, class B and C, as well as to IEC 62053-21 and IEC 62052-11 international standards for electronic meters of active energy classes 2 and 1.

框图

Three Phase Meter

Three Phase Power Meter Block Diagram
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支持的器件

无线连接

多协议MCU

  • KW41Z: Kinetis® KW41Z-2.4 GHz双模式：BLE和802.15.4无线连接微控制器(MCU)，基于Arm® Cortex®-M0+内核

传感器

运动传感器

  • FXOS8700CQ: 数字运动传感器——3D加速度传感器（±2g/±4g/±8g）+3D磁力计

处理器和微控制器

KM系列Cortex-M0+

  • KM3x: 50–75 MHz带段式LCD的精确计量微控制器，基于Arm® Cortex®-M0+内核

Features

Connectors

  • Internal connector supporting Arduino® shield (Wi-Fi, Bluetooth) expansion boards

Interfaces

  • 4 x 40 segment LCD, including charge pump (values shown on LCD: V, A, W, Var, VA, kWh, kVarh, cos F, Hz, time, date
  • Isolated (4 kV) RS-232 port for monitoring, parameterization and firmware upgrade
  • Integrated wireless 15W transmitter supports fast charging for Samsung® and Apple® devices
  • Digital control buck-boost converter
  • One control IC controls buck-boost converter, charge, Qualcomm algorithm, PD communication and wireless power management

Design Features

  • Low-power design with operation in low-power modes and the use of built-in RTC (Li-battery backup)
  • 100 A current range, 85 to 264 V, 50/60 Hz voltage range

EMC

  • EMC proven design (EN61000-4-2, EN610004-4)

Accuracy

  • Accuracy class: C (active energy EN50470-3) and three or two percent (reactive energy EN62053-23)

Communications Infrastructure

购买选项

FRDM-KW41Z-Image

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  • FRDM-KW41Z

  • Part Description: Freedom Development Boards for Kinetis KW21Z, KW31Z and KW41Z MCUs. 2 boards per order..

  • Kit contains:

    • 2 FRDM-KW41Z Freedom Development Boards
    • Quick Reference Card
    • 2 USB cables
  • CNY 1,197.68
  • 数量为 1
    • 供货情况: 现货
    • 库存: 2
    • 配送: 正常情况下 1-2个工作日内发货
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TWR-KM34Z75M-Image

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  • TWR-KM34Z75M

  • Tower System Development Board for Kinetis KM14, KM33 and KM34 (50 MHz) MCUs.

  • Kit contains:

    • TWR-KM34Z75M Tower System module
    • Quick Start Guide
    • USB Cable
  • CNY 2,163.23
  • 数量为 1
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