Variable Frequency Transformer Tester
Recommended by Darui Electric：
Variable Frequency Transformer Comprehensive TesterDesigned for on-site CT testing of VA characteristics, ratio, polarity, demagnetization, 5% and 10% error curves, phase error and ratio error, primary current injection, etc.，Standalone output voltage up to 2500V, current up to 400A. Simply set the test voltage/current values without configuring step sizes, and the device automatically boosts voltage/current and presents transformerVA characteristic curves or ratio/polarity test results quickly, supporting data storage and on-site printing. Eliminates manual voltage adjustment, recording and curve drawing. Also supports USB data transfer and upload for editing, saving or printing. Simple and convenient operation improves work efficiency, making it a cost-effective high-tech product.
Technical Description
1. Pioneering MBC power control, single-phase AC220V input, shared port for working and power supply - safer and more reliable design.
Note: Other similar products use separate working and power supply inputs requiring three-phase AC 380V dual line input to meet test requirements, posing significant safety hazards with risk of electric shock or fatal accidents. 2. Compliant with national maintenance regulations:
All device power outputs are real voltage and current values with standard sine waveform at 50-60Hz; truly and effectively simulates actual transformer operating conditions in compliance with national maintenance regulations.
3. Large Output Capacity:
With single-unit 220V input: max voltage output 0-2500V, max current output 0-400A.
4. Comprehensive Functions:
Can test CT steady-state and transient characteristics: VA characteristic, automatic knee point calculation, ratio, polarity, 5% and 10% error curves, demagnetization, primary current injection, phase error and ratio error — easily achieving multi-function in one device.
5. Simple Wiring:
Single power input port; only 8 test ports to complete all CT test items. Safe and simple wiring ideal for field use, effectively reducing labor intensity and improving work efficiency.
6. Easy Operation:
Rotary mouse and large LCD display for simple operation, clear graphic display, intuitive and convenient.
7. Fast Printing:
Thermal printer with auto data selection for typical reports, perfect for field data comparison.
8. Large-capacity FLASH storage: stores up to 1000 test data sets, retained for 10 years after power loss.
9. USB interface: convenient connection to modern laptops.
10. Compact and lightweight: smallest and lightest in its class, convenient for field use.
Main Test Functions
CT Steady-State and Transient Testing:
1. VA Characteristic Test
2. Ratio Test
3. Polarity Discrimination
4. 5% and 10% Error Curves
5. Demagnetization
6. Knee Point Calculation
7. Primary Current Injection
8. Phase Measurement (Phase Error)
9. Ratio Error Measurement
10. Secondary Winding Resistance Measurement
11. Secondary Actual Burden Measurement
12. Core Demagnetization
13. Accuracy Limit Factor
14. Instrument Security Factor
15. Secondary Time Constant
16. Remanence Factor
17. Saturated and Unsaturated Inductance
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
