，Series Resonance Variable Frequency Test Instrument is also referred to as Transformer Volt-Ampere Characteristic Tester.

1. The instrument is safe and convenient to operate, fully microcomputerized, built-in imported high-performance CPU, high reliability, after setting the test value according to the interface prompts, no manual contact with the tested equipment is required, the instrument automatically completes the test, keeping test personnel away from high-voltage circuits and ensuring their personal safety.

2. Large output capacity, the maximum output voltage for volt-ampere characteristic test is up to 1000V, the maximum current for transformation ratio test is up to 600A, and the instrument output capacity is 5KVA.

3. Optional accessories include external voltage booster, external current booster, external voltage regulator, the external voltage booster can raise the voltage up to 2000V, 3A, the external current booster can raise the current up to 1000A, the external voltage regulator can output up to 1500V, 20A, when using the external voltage booster, the volt-ampere characteristic test of 500KV class 1A current transformers can be performed.

4. Large screen 320*240 dot matrix Chinese character graphic interface, after the test is completed, the volt-ampere characteristic curve can be directly displayed, the graphics are clear, beautiful, and easy to analyze, with a built-in micro printer, curves and test results can be printed at any time.

5. The instrument uses a rotary mouse as the input device, which is convenient and simple to operate and has a long service life.

6. The instrument has built-in Flash memory, data is not lost after power failure, after on-site tests are completed, test results can be viewed and printed indoors.

7. The instrument is equipped with an RS232 communication interface, which can be connected to a computer via a serial cable to achieve communication between the PC and the instrument. Test personnel can use the computer to control the instrument for testing or upload test data from the instrument. The PC application software provided with the instrument is powerful, beautiful in appearance, and simple to operate, enabling the saving and printing of test results, and the export of test data to EXCEL format documents for editing.

8. The instrument power supply can achieve AC220V and AC380V adaptive power supply.