This product is a programmable poly-phase energy calculator IC that supports 1-, 2- or 3-phase WYE and Delta services, from 2 to 4 wires, computes cumulative active and reactive wide-band and fundamental harmonic energies, computes active and reactive energies, RMS and momentary voltage and current values for each phase, supports Rogowski coil, current transformer, Shunt or Hall current sensors, exclusive ripple-free energy calculation algorithm, programmable pulsed output, stepper motor outputs, neutral current, temperature, and magnetic field monitoring, OTP memory for configuration and calibration, SPI interface, supports IEC 62052-11 / 62053-21 / 62053-23 standards, less than 0.1 % error over 1:1000 dynamic range