Introduction to the functions of the comprehensive testing instrument for variable frequency transformers

The CTA-1000C variable frequency transformer comprehensive tester is designed for on-site detection of CT’s volt ampere characteristics, transformation ratio, polarity, demagnetization, 5% 10% error curve, angle difference detection, etc. During the test, only the test voltage/current value needs to be set, without setting the step size, the equipment can automatically boost/boost the current, and quickly display the volt ampere characteristic curve or transformation ratio, polarity and other experimental results of the transformer. It supports data saving and on-site printing, not only saving manual voltage regulation, manual recording, curve tracing and other tedious labor, but also can transfer and upload test data through the USB interface for editing, saving or printing. Simple and convenient to operate, improving work efficiency, it is a high-tech product with high cost-effectiveness.

Product features:

1. It has comprehensive functions and can meet the testing requirements of excitation characteristics (i.e. volt ampere characteristics), transformer ratio, polarity, secondary winding resistance, secondary load, ratio difference, and angle difference of various CTs (such as protection, metering, TP). It can also be used for testing excitation characteristics, transformer ratio, polarity, secondary winding resistance, ratio difference, and other tests of various PT electromagnetic units.

2. On site calibration of current transformers does not require standard current transformers, current transformers, load boxes, voltage regulation control boxes, and high current conductors. It uses extremely simple testing wiring and operation to achieve current transformer calibration, greatly reducing work intensity and improving work efficiency, making it easy to carry out on-site transformer calibration work.

3. It can accurately measure the CT ratio difference and angle difference, with a ratio difference * allowable error of ± 0.05% and an angle difference * allowable error of ± 2 minutes. It can measure 0.2S level current transformers, with a ratio measurement range of 1-40000.

4. Based on advanced frequency conversion method to test CT/PT volt ampere characteristic curve and 10% error curve, the output is only 180V AC voltage and 12Arms (36A peak) AC current, but it can withstand CT testing with a turning point of up to 60KV.

5. Automatically provide CT and PT parameters such as inflection point voltage/current, 10% (5%) error curve, accuracy limit factor (ALF), instrument safety factor (FS), secondary time constant (Ts), residual magnetization coefficient (Kr), saturated and unsaturated inductance.

6. Test to meet various transformer standards such as GB1208 (IEC60044-1), GB16847 (IEC60044-6), GB1207, and automatically select which standard to test based on the type and level of the transformer.

7. The testing is simple and convenient, with one click completion of CT direct resistance, excitation, ratio and polarity testing. In addition to load testing, all other CT tests are conducted using the same wiring method.

8. Full Chinese dynamic graphical interface, no need to refer to the manual to complete wiring and parameter settings: dynamically display parameter settings, automatically display relevant parameters based on the currently selected test project; Dynamically display the help wiring diagram, displaying the corresponding wiring diagram based on the currently selected test project.

9. 5.7-inch graphic reflective LCD, clear and visible under sunlight.

10. Using a rotating photoelectric mouse operation, the operation is simple, fast, convenient, and extremely easy to master.

11. The panel comes with a printer that can automatically print generated test reports.

12. The test results can be exported from a USB drive, and the program can be upgraded using a USB drive, which is convenient and fast.

13. The device can store 1000 sets of test data without losing power.

14. Equipped with backend analysis software, it facilitates the storage, conversion, and analysis of test reports, and can be used for comparison, judgment, and evaluation of experimental data.

15. Easy to carry, device weight<9Kg.

Main testing functions:

CT steady-state and transient testing:

1. Volt ampere characteristic test

2. Transformation ratio test

3. Polarity discrimination

4. 5% and 10% error curves

5. Inflection point calculation

6. Phase measurement (angle difference)

7. Differential measurement

8. Secondary winding resistance measurement

9. Secondary actual load measurement

10. Accurate limit coefficient

11. Instrument security factor

12. Quadratic time constant

13. Remanent magnetization coefficient

14. Saturated and Unsaturated Inductance

Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com