- Designs
- Two-Phase Power Meter
Overview
With the growing consumption of energy worldwide, particularly in the residential market, utility providers need increasingly accurate and cost-effective energy metering solutions. The Kinetis® M series two-phase electricity meter reference design addresses these accuracy and cost needs by providing a high-performance analog front end combined with an embedded programmable gain amplifier to increase the accuracy of energy measurement.
Two Phase Power Meter Reference Design
Specifications
Two Phase Power Meter Reference Design Block Diagram
Microcontrollers (MCUs)
- KM1x : 50 MHz, Mainstream Precision Metrology Microcontrollers based on Arm® Cortex®-M0+
- KM3x : 50–75 MHz Precision Metrology MCUs with Segment LCDs based on Arm® Cortex®-M0+
Sensor
- FXOS8700CQ : Digital Motion Sensor - 3D Accelerometer (±2g/±4g/±8g) + 3D Magnetometer
Wireless MCU
- KW41Z : Kinetis® KW41Z-2.4 GHz Dual Mode: Bluetooth® Low Energy and 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm® Cortex®-M0+ Core
Two Phase Power Meter Reference Design Block Diagram
Technical and Functional Specifications
Features
- 200 A current range (CL200, TA 30A)
- 85 to 264 V, 50/60 Hz voltage range
- Two types of installation: Form 2S or Form 12S
- Accuracy class: ANSI C12.20-2002 Class 0.2
- Line frequency measurement (for precision zero-cross detection)
- Current transformer sensing circuit implementation for each phase
- Low-power modes including the use of built-in RTC (Li-battery backup)
- AMI expansion header supporting 2.4 GHz 802.15.4 or HAN/NAN (with 6loWPAN IPv6) communications for AMR and remote control
- EMC proven design (ANSI C62.41, IEC 61000-4-4)
Peripherals
- 8 x 20 segment LCD, including charge pump
- LED pulse outputs (kWh, kVARh)
- Isolated (4 kV) RS-232 port for monitoring, parameterization, and firmware upgrade (optional)
- Infrared optical port according to ANSI C12.18-2006 (optional)
Networking
- Smart metering connectivity
Power and Energy
- Two-phase meters
Buy
-
MKM14Z128ACHH5 Active
- Kinetis KM14: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, 44-LGA
-
- MKM14Z128ACHH5
- 10K @ US
- $1.50
- Sample
- Distributor
Available Distributors:
Distributor Name Region Inventory Inventory Date Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.
No Distributors Available
-
- MKM14Z128ACHH5R
- 10K @ US
- $1.50
- Distributor
Available Distributors:
Distributor Name Region Inventory Inventory Date Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.
No Distributors Available
-
MKM33Z128ACLH5 Active
- Kinetis KM33: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, Segment LCD, 64-LQFP
-
- MKM33Z128ACLH5
- 10K @ US
- $1.80
- Sample
- Distributor
Available Distributors:
Distributor Name Region Inventory Inventory Date Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.
No Distributors Available
-
- MKM33Z128ACLH5R
- 10K @ US
- $1.80
- Distributor
Available Distributors:
Distributor Name Region Inventory Inventory Date Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.
No Distributors Available
Design Resources
Get Started
Get to Know the Two-Phase Power Meter Reference Design and MKM34Z128
-
Kinetis-M Two-Phase Power Meter - Reference Design (REV 0 )
- PDF
- 2.4 MB
- DRM149
- [ English ]
Application Note
-
FFT-Based Algorithm for Metering Applications - Application Note (REV 4 )
- PDF
- 642.7 kB
- AN4255
- [ English, 中文 ]
面向计量应用的基于FFT的算法 - 应用笔记 (REV 4)
PDF ( 642.7 kB)
-
Schematics
KM34Z128 1P3W Power Meter Schematics (REV B )- PDF
- 151.4 kB
- SCH-27700
-
Design Files / BOM
Two Phase Power Meter Bill of Materials (REV 0 )- HTML
- 15.7 kB
- TWO-PHASE-POWER-METER-BOM
-
Tools and Software
Two Phase Power Meter Design Files (REV 0 )- ZIP
- 1.5 MB
- TWO-PHASE-POWER-METER-DF
FreeMASTER tool 2.5 – Installer (REV 2.5.0 )- HTML
- 31.4 MB
- FMASTERSW25