Forward and reverse active energy testing
Forward and reverse reactive energy error testing
SW-5D bridge wiring method for basic error testing of programmable energy meters
Communication testing, remote meter reading, and computer time synchronization
Meter constant (pulse constant) verification, including:
- Pulse counting method
- Time measurement method
- Stopwatch method
Time-of-use (TOU) testing, maximum demand testing, and display value error verification
Influence tests, including:
- Voltage unbalance test
- High-order harmonic test
Disturbance tests, including:
- Voltage dip test
- Short-duration power interruption test

General Functions

Measurement functions: Active power, reactive power, active energy, reactive energy, starting test, and creep test for three-phase energy meters
Accuracy evaluation: Basic error, mean error, standard deviation, and 24-hour stability test for high-accuracy calibration
Voltage and current output: Adjustable frequency and harmonic generation (1st–64th order), supporting phase sequence influence testing
Multi-meter calibration: Simultaneous calibration of energy meters with different accuracy classes and phase sequences; automatic identification of meter constants
Safety protection: Current open-circuit protection and voltage short-circuit protection to ensure reliable calibration operation
Operating modes: Automatic and manual calibration modes
Data processing: Automatic error calculation, data processing, data storage, and PC-based online output
Interfaces: Optical and pulse input channels, flexible configuration, supporting multi-channel meter input
Power source system: Modular high-power three-phase source, special power design with high efficiency and low loss
Standards compliance: Fully compliant with IEC 62053, IEC 597, and R46 requirements for energy meter calibration systems
Mechanical structure: Robust, practical, and professional industrial design for laboratory applications

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