The YC-1893R High-grade Three-phase Energy Meter Calibration Device is an advanced precision instrument designed for metrological institutes, electric science research facilities, and energy meter manufacturers. With 0.01% accuracy class and comprehensive testing capabilities, this device serves as a primary standard for energy meter verification and calibration.

• Active Power, Reactive Power, Active Energy, and Reactive Energy measurement
• Start-up and inrush current testing with automatic color marking
• Measurement of basic error, average error, standard deviation, and 24-hour variation
• Assessment of voltage, frequency, harmonic (2nd to 21st order), and phase sequence impacts
• Simultaneous measurement of standard energy meters with different constants
• Protection against open-circuit current and short-circuit voltage
• Dual operation modes: automatic and manual
• Advanced data management with statistical functions and customizable report formats
• Barcode input support for streamlined operations
• Customizable device appearance and structure

• Bidirectional active and reactive error testing
• SW-5D precision time base source for daily timing error measurement
• Communication testing and broadcast synchronization
• Verification of constants using pulse count, time, and start/end energy methods
• Time-of-use switching, demand period, and demand value error testing
• Meter reading and meter combination error testing
• Four-quadrant reactive power testing