Multi functional anti-theft three-phase and DC metering chip

RuiNeng Micro RN8302BMulti functional anti-theft three-phase and DC metering core

metering

◆AC and DC metering

◆ Provide full wave and fundamental reactive energy, with a dynamic range of 5000:1 and a nonlinear error of<0.1%, meeting the accuracy requirements of 0.5S and 0.2S active energy meters

◆ Provide full wave and fundamental wave apparent electrical energy

◆ Provide active and reactive power directions, support reactive four quadrant judgment

◆ Equipped with stealth start function and adjustable start threshold

◆ Adjustable electric meter constant

◆ Provide fast pulse counting for active, reactive, and visible power

◆ Provide full wave, fundamental wave, active, reactive, and apparent pulse outputs

measure

◆ Provide full wave and fundamental active, reactive, and apparent power

◆ Provide effective values of full wave, fundamental wave, and harmonic three-phase voltage and current

◆ Provide full wave and fundamental power factor

◆ Provide voltage line frequency, measurement error<0.02%

◆ Provide voltage and current phase angles for each phase, with a measurement error of<0.02 °

◆ Provide seven zero crossing detections, with zero crossing thresholds that can be set

◆ Provide voltage phase sequence error detection

◆ Provide pressure loss indication, and the pressure loss threshold can be set

◆ Provide flexible voltage and current waveform caching data

◆ Provide voltage sag detection

◆ Provide overvoltage and overcurrent detection

electricity-stealing prevention

◆ Provide zero line current measurement

◆ Provide a low-power mode NVM2 for current comparison prediction, with a threshold of 2 levels that can be set and a power consumption of less than 150 μ A

◆ Provide a low-power mode NVM1 for measuring the effective value of low-power current, with a power consumption of less than 2mA

◆ Provide active reporting function for full voltage loss, with an average power consumption of only 7 μ A for typical applications

software regulating meter

◆ Provide gain correction for seven ADC channels

◆ Provide phase correction for seven ADC channels, among which A, B, and C current channels support segmented phase correction

◆ Provide power gain correction

◆ Provide segmented phase correction for active and reactive power

◆ Provide active, reactive, and effective value offset correction

◆ Provide checksum registers for automatic verification of calibration table data

◆ Suitable for three-phase three wire and three-phase four wire systems

◆ Single+3.3V power supply with power monitoring function

◆ Built in 1.25V ADC reference voltage, typical temperature coefficient of 5ppm/℃, can also be connected to an external reference voltage

◆ Equipped with a high-speed SPI interface, the transmission rate can reach 3.5Mbps, and it provides write protection function

◆ Having an interrupt output pin

◆ Working voltage range: 3.0V-3.6V

◆ Working temperature range: -40 ℃ -85 ℃

◆ Adopting LQFP44 green packaging

Typical application circuit diagram of three-phase four wire meter