Tunkia TA4300 Power Quality Calibrator for Power Quality Analyzer Calibration

1. Overview of TA4300 Power Quality Calibrator

The TA4300 Power Quality Calibrator is a high-precision, multifunctional standard device designed for testing and calibrating power quality analyzers and energy meters. It provides stable and accurate three-phase voltage and current outputs, supporting a wide range of power quality simulations including harmonics, interharmonics, flicker, voltage swell and sag, and three-phase unbalance.

With a highly integrated architecture, excellent output stability, and outstanding reliability, the TA4300 is ideal for use in national and provincial metrology institutes, third-party testing organizations, enterprise metrology laboratories, and research institutions.

2. Key Features & Specifications

• Three-phase voltage source: 1 V ~ 528 V

• Three-phase current source: 0.2 mA ~ 22 A

• Frequency range: 45 Hz ~ 65 Hz (400 Hz optional)

• Accuracy: Class 0.02 for voltage and current

• Supported tests: Harmonic, interharmonic, flicker, voltage dip/interruption, three-phase unbalance

The instrument can output AC voltage and current signals with exceptional stability, making it suitable for high-precision calibration and verification tasks.

Front and Rear Panel of TA4300

3. System Layout and Interface

The TA4300 adopts an intuitive front and rear panel layout for convenient operation.

Users can easily switch between three-phase three-wire and three-phase four-wire configurations, select phase sequence (ABC/CBA), and adjust the frequency and range settings.

The graphical user interface provides multiple function views, including:

• Power Quality Interface for choosing test items such as harmonics, interharmonics, flicker, transient harmonics, voltage dips/interruptions, three-phase unbalance

• Power Interface showing voltage, current, phase, and power data

• Power Analysis Interface offering phasor diagrams, trend charts, and stability analysis

• Energy Error Calculation Interface for meter calibration

4. Typical Applications

1. Calibration of Power Quality Analyzers

The TA4300 can simulate a variety of power quality disturbances to verify analyzer performance:

• Harmonic Test:
Generate harmonics of specific orders and amplitudes, such as adding 10 % of the 2nd and 3rd harmonics to a 100 V/1 A output.
After stabilization, the device under test (DUT) measures the harmonic components for consistency verification.

• Interharmonic Test:
Output interharmonic signals, e.g., 3 % amplitude of the 2nd order, to check DUT detection accuracy.

• Flicker Test:
Generate periodic amplitude fluctuations (sine or square wave), and measure both short-term and long-term flicker values on the DUT.

• Voltage Swell and Sag Test:
Simulate voltage dips or interruptions by adjusting amplitude and duration (e.g., 5 s interruption).
The DUT should accurately record voltage fluctuation events.

• Three-phase Unbalance Test:
Output unbalanced voltages or currents (e.g., 50 V/5 A, 2 % unbalance) and verify DUT response through numerical comparison among phases.

2. Calibration of Energy Meters (Energy Error)

The TA4300 can also function as a precision AC energy source for energy meter calibration.

• Connect the voltage and current outputs, and connect the pulse input cable to the DUT.

• Set the output parameters (e.g., 220 V, 1.5 A).

• After pulse stabilization, the TA4300 automatically compares the DUT’s pulse count with the reference energy to calculate the average error.

• The system averages every 5 pulse readings and provides a final mean deviation for evaluation.

5. Automated Test Software (Optional)

For enhanced productivity, the TA4300 supports automated calibration software — the Power Quality Analyzer Calibration System.

Users can:

• Select calibration standards and test schemes

• Configure DUT parameters and system settings

• Define test points and start fully automated calibration

• Choose operation modes (e.g., voltage, current, power)

• Automatically record readings, determine pass/fail status, and generate calibration reports in customizable templates

This software enables efficient, traceable, and standardized testing workflows.

6. Conclusion

The TA4300 Power Quality Calibrator integrates advanced signal generation, precision measurement, and automation into one platform.

It offers a complete solution for testing and calibrating power quality analyzers, energy meters, and related electrical instruments, ensuring traceable accuracy and consistent performance across a wide range of applications.

7. Operation Demonstration of TA4300 Power Quality Calibrator