The SZ-03A-K8 series three phase standard meter incorporates advanced technologies including high-speed DSP, CPLD, MCU, and ADC with self-calibration capabilities. This sophisticated design enables high-speed AC signal sampling and specialized digital processing, resulting in a simplified structure while achieving exceptional 0.02% relative error measurement accuracy.
High Precision Measurement
±0.02% measurement error for three-phase voltage, current, power, and electrical energy
Wide Measurement Range
Voltage: 5V to 480V | Current: 10mA to 120A
Multi-Parameter Testing
Synchronous measurement of three-phase voltage, current, power, electrical energy, power factor, phase, and frequency
Comprehensive Measurement Modes
Supports multiple configurations including three-phase four-wire (3P4W), three-phase three-wire (3P3W), single-phase two-wire (1P2W), single-phase three-wire (1P3W), and two-phase three-wire (2P3W) for both active and reactive power measurements
Harmonic Analysis
Measures waveform distortion factor and 2nd to 21st harmonic content with bar chart display
Test Bench Verification
Analyzes voltage, current, and phase asymmetry rates along with power stability assessment
Waveform Display
Synchronous display of voltage and current waveforms
Advanced Standard Meter Functions
Configurable energy pulse constant (automatic or manual), error and standard deviation calculation, electricity quantity accumulation, and manual/external synchronous pulse power control
Software Calibration
Full-range and phase angle calibration via software for enhanced reliability and efficiency
Communication Capabilities
Dual communication ports (RS-232 and RS-485) for PC connectivity and test bench integration, enabling automated measurement and calibration processes
