◆Acquisition and monitoring of AC voltage, two current, two active power, two total active energy and other electrical parameters

◆Industrial grade design, embedded installation, convenient and reliable. Supports MODBUS-RTU and DL/T645-2007 dual protocols, simple communication and Application

◆The product has obtained ROHS report, CE report and metrological institute test report

◆Meet the relevant measurement requirements in "JJG1148-2018 Electric Vehicle AC Charging Stake Metrological Verification Regulations"

◆Meet the relevant measurement requirements in "QZTT2301.4-2018 Base Station Intelligent Mobile Ring Monitoring Unit (FSU) Technical Requirements Part 4: Microstation Type"

◆It can collect and monitor up to 1000V AC/DC voltage, current, active power, electric energy and other electrical parameters

◆The PCB layout meets the requirements of 1000V AC/DC safety regulations, and the embedded installation is convenient and reliable

◆It supports MODBUS-RTU and DL/T645-2007 dual protocols, with simple communication and application

◆With electric energy pulse output interface

◆The product has obtained the test report of the metrology institute

◆Meet relevant measurement requirements in JJG1149-2018 Measurement Verification Regulation for Off board Chargers of Electric Vehicles

◆Simple and convenient operation, with LED light indication, eye-catching and intuitive.

◆Multi-range voltage output to meet the voltage requirements of different types of energy meters.

◆Fixed current output, stable performance.

◆The automatic protection mechanism of no-load voltage and short-circuit current brought by the equipment is safe and reliable.

◆This device can provide abundant power information: AC voltage, AC current, phase between voltage and current, power factor, active power, reactive power, apparent power, frequency, etc.

◆The device can have 1-3 epitopes, a built-in error processor, or an external error processor.

◆This device can be used for product development, product maintenance, production line debugging, etc. In combination with the underlying dynamic link library developed by our company, customers can develop their own automatic meter adjustment software.

◆This device can provide abundant power information: AC voltage, AC current, phase between voltage and current, power factor, active power, reactive power, apparent power, frequency, etc.

◆The device can have 1-3 epitopes, a built-in error processor, or an external error processor.

◆This device can be used for product development, product maintenance, production line debugging, etc. In combination with the underlying dynamic link library developed by our company, customers can develop their own automatic meter adjustment software.

◆It can measure AC and DC voltage, current, power, power factor and frequency, and measure active electric energy.

◆Up to 12 channels of single-phase metering and measurement can be supported.

◆It has two UART communication interfaces. One channel is used for MCU communication serial port, and one channel is dedicated for meter calibration.

◆With pulse indicator and pulse output, it is convenient for quality verification.

◆The internal embedded electric energy metering algorithm and electric energy metering calibration algorithm eliminate the professional, tedious and complex development process.

◆Provide three-phase electrical parameters such as full-wave, fundamental-wave voltage, current, power, power factor, electric quantity and total electric quantity.

◆Provide event detection such as three-phase overload, overcurrent, loss of current, overvoltage, undervoltage, loss of voltage, reverse sequence of voltage and current, unbalance, etc.

◆Provide 41th harmonic content data of three-phase voltage and current.

◆It has one TTL communication interface and two communication protocols DL/T 645-2007 and MODBUS-RTU.

◆It has pulse indicator lamp and power pulse output interface.

◆It has customizable alarm output and can simultaneously monitor various electric parameters.

◆Three-phase three-wire is compatible with three-phase four-wire hardware and software is adaptive.

◆The electric energy metering algorithm and electric energy metering calibration algorithm are embedded internally, eliminating the professional, tedious and complex development process.

◆Provide instantaneous electrical parameters such as voltage, current, power, angle and frequency.

◆Provide instantaneous data such as active, reactive, apparent power and power factor.

◆Provide single-phase or three-phase A, B, C three-phase active and reactive power.

◆It has two UART communication interfaces, one for MCU communication serial port and one for meter calibration.

◆It has interrupt signal output function.

◆Energy metering algorithm and energy metering calibration algorithm are embedded internally, eliminating the professional, cumbersome and complex development process.

◆High accuracy, less than ± 0.5% error over a dynamic range of 2500: 1

◆High stability of large signal, in the condition of signal 300mA, less than ± 0.2% error in the output frequency fluctuation (CF).

◆High stability of small signal, in the condition of signal 50mA, less than ± 0.3% error in the output frequency fluctuation (CF).

◆Current and voltage RMS, current measurement range (8mA ~ 30A) @ 1mohm

◆On-Chip anti-creep protection

◆On-Chip power supply detector

◆2 high-precision sigma-delta ADCs for current and voltage measuring

◆The range of current（10mA~35A）@1mohm

◆The range of Active energy（1w~7700w）@1mohm@220V

◆Measure RMS Voltage and Current, fast current RMS, Active Power, Active Energy

◆The gain error is less than 1%, calibration-free when peripheral components meet certain conditions.

◆the current channel support over-current monitoring function, the threshold and response time can be configured.

◆Two independent Sigma-Delta ADC, one current and one voltage.

◆Less than 0.1% error in active energy measurement over a dynamic range of 4000:1

◆Current RMS range (10mA ~ 30A) @ 1mOhm

◆Measure current, voltage RMS, fast current RMS, active power, sampled waveform

◆The batch factory gain error is less than 1%, and the peripheral components can be free of calibration under certain conditions

◆Programmable over-current detection

◆Highly integrated: 32bit ARM Cortex-M0, Hardware temperature compensation (RTC), The controller of LCD,EEPROM;

◆Typical voltage range of CPU system is 2.2V ~ 5.5V; GPIO supports docking devices having different operating voltages.

◆High performance: Typical CPU operating frequency is 7.3728MHz (Maximum up to 29.4912MHz);

◆Low power: Typical power consumption is about 2mA at normal operation; Power consumption is about 18uA when the system operates at 32KHz; Power consumption of the overall chip is about 10uA in sleep mode.

◆The second pulse error of RTC is less than ± 5ppm within -25 ℃ ~ 70 ℃ and the minimum calibration scale is 0.068ppm;

◆Package Type: LQFP128

◆Highly integrated: 32bit ARM Cortex-M0,Measurement module, Hardware temperature compensation (RTC),

◆Wide voltage range: Voltage range of 2.8V~5.5V to ensure the measurement’s accuracy;

◆Typical voltage range of CPU system is 2.2V ~ 5.5V;

◆High performance: Typical CPU operating frequency is 3.6864MHz (Maximum up to 29.4912MHz);

◆Power consumption is about 18uA when the system operates at 32KHz;

◆High precision: The active energy accuracy is less than 0.1% over a dynamic range of 5000:1;

◆ARM Cortex-M0 core;

◆Other series provide 32kbytes SRAM, of which 2kbytes is used as Cache;

◆Single-cycle multiplier(32bit*32bit);

◆System timer is embedded in the CM0;

◆Support for external interrupts and other ways to wake up;

◆Temperature Sensor: Provide accurate temperature, temperature measurement accuracy is ±1℃ in the range of -25℃ ~70℃;

◆Two channels of Σ-△ ADC are provided.

◆The active energy accuracy is less than 0.1% (< 0.1%) over a dynamic range of 8000:1 with the

◆one-channel current and one-channel voltage RMS is provided, with the RMS accuracy <0.1%

◆No-load threshold is adjustable.

◆Reverse active power indication is provided.

◆Provide voltage channel frequency measurement.

◆Two channels of Σ-△ ADC are provided.

◆The active energy accuracy is less than 0.1% (< 0.1%) over a dynamic range of 8000:1 with the

◆one-channel current and one-channel voltage RMS is provided, with the RMS accuracy <0.1%

◆No-load threshold is adjustable.

◆Reverse active power indication is provided.

◆Provide voltage channel frequency measurement.

◆Three channels of Σ-△ ADC are provided.

◆The active energy accuracy is less than 0.1% (< 0.1%) over a dynamic range of 8000:1 with the

◆Two-channel current and one-channel voltage RMS is provided, with the RMS accuracy <0.1%

◆One pulse frequency generator which can be used for user-defined power electrical energy accumulation points.

◆Provide instantaneous sample values of the three-way ADC.

◆No-load threshold is adjustable.

◆Three channels of Σ-△ ADC are provided.

◆The active energy accuracy is less than 0.1% (< 0.1%) over a dynamic range of 8000:1 with the

◆Two-channel current and one-channel voltage RMS is provided, with the RMS accuracy <0.1%

◆One pulse frequency generator which can be used for user-defined power electrical energy accumulation points.

◆Provide instantaneous sample values of the three-way ADC.

◆No-load threshold is adjustable.

◆It can measure split-phase voltage, current and power, and can measure positive and reverse active energy.

◆It has the function of power direction identification and indication;

◆It has the function of time-of-use and multi-rate energy metering, and the period rate parameters can be modified through the parameter setting software;

◆With LCD display, support commonly used voltage, current, power, power and prompts;

◆With one RS-485 communication interface, support DL/T645-2007 or Modbus communication protocol

◆The default baud rate is 2400bps, which can be changed by setting

◆Three channels of Σ-△ ADC are provided

◆The active energy accuracy is less than 0.1% (< 0.1%) over a dynamic range of 1500:1 with the IEC62053-22: 2003 Standard supported.

◆The reactive energy accuracy is less than 0.1% (< 0.1%) over a dynamic range of 1500:1 with the IEC62053-23: 2003 Standard supported.

◆Two-channel current and one-channel voltage RMS is provided, with the RMS accuracy <0.5% over the 400:1 dynamic range.

◆No-load threshold is adjustable.

◆Reverse active power indication is provided.