The YC-1891D series single-phase energy meter calibration equipment is designed for comprehensive testing and verification of various single-phase energy meters. This professional-grade equipment serves electric power departments, energy meter manufacturers, metrology and quality inspection departments, and industrial enterprises.

• Active power, reactive power, active energy, and reactive energy measurement
• Start-up and creep testing with automatic calibration
• Basic error, average error, standard deviation, and 24-hour variation analysis
• Voltage, frequency, harmonic (2nd to 21st order), and phase sequence influence tests
• Simultaneous current measurement on same meter rack
• Non-disconnection testing for current and voltage circuits
• Open-circuit current and short-circuit voltage protection
• Optical head collection and flipping functionality
• Electric and manual operation modes
• Computer software for automatic error data processing and storage
• Barcode input support and comprehensive data management
• Configurable from 3 to 60 meter positions

• Bidirectional active and reactive power error testing
• SW-5D precision time base source for daily timing error measurement
• Communication testing and broadcast time synchronization
• Verification of constants via pulse count, time, and start/stop energy methods
• Time-of-use switching, demand cycle, and demand value error testing
• Counter value and counter combination error analysis
• Optional power consumption testing
• Optional tilt influence testing
• Optional prepaid energy meter testing functionality