I. Overview
According to IEC and relevant national regulations, transformers in the production process, semi-finished and finished products, as well as newly installed and repaired transformers, must undergo transformer ratio testing before being put into operation. In the "Regulations for Handover and Preventive Tests of Power Equipment", it is also required to regularly measure the ratio of operating transformers. The transformer ratio test can check the condition of the transformer's windings and tap changers, and determine whether there are defects such as coil short circuits, connection errors, and inter-turn short circuits, thereby ensuring the safe use of the equipment.
The transformer ratio tester developed and produced by our company uses a 32-bit ARM core as the processing core to control the entire machine. It realizes the one-time completion of the ratio measurement of single-phase or three-phase transformers. The operation of the instrument is all displayed in Chinese menus, which is simple and intuitive. The test results are accurate and reliable, and can store and print test results. Strong anti-interference ability. It can meet the needs of various large, medium, and small transformer ratio tests.
II, Performance Characteristics
Automatically measure the connection group;
Automatically perform group transformation, can directly measure the ratio of single-phase and three-phase transformers;
Automatically switch phase sequence and range; automatically calibrate the meter;
After inputting the standard ratio, it can automatically calculate the relative error;
Once the measurement is completed, automatically cut off the test voltage;
The test results are automatically saved, and the test data can be printed, and 20 historical measurement data can be stored for viewing previous test data.
III, Technical Parameters
Ratio measurement range: 0.9～10000
Group : 1～12 points
Accuracy : 0.1～1000 0.2 level; 1000～10000 0.5 level
Power supply: AC, 220V±10%, 50Hz
Operating ambient temperature: -5℃～40℃
Operating ambient humidity: <85%
Volume : 430×320×215 mm3
Weight : 5kg
IV, Configuration List
1. Main unit 1 set
2. Test leads 1 set
3. Power cord 1 piece
4. Ground wire 1 piece
5. Printing paper 2 rolls
6. Product instruction manual 1 copy
7. Certificate of conformity 1 copy
8. Factory inspection report 1 copy
9. Warranty card 1 copy
