The preventive test regulations of the State Ministry of Electric Power require regular turns ratio or voltage ratio tests on transformers, including semi-finished and finished products during production, before being put into operation, and transformers in operation within the power system. The traditional turns ratio bridge is cumbersome to operate, the readings are not intuitive, necessary conversions are required, and the test results only reflect the turns ratio of one phase. The automatic transformer turns ratio tester overcomes the shortcomings of the traditional turns ratio bridge test, completing the three-phase turns ratio test in one go, with fast test speed, high accuracy, and greatly improved test efficiency.
Main functions and features of the automatic transformer turns ratio tester
1. Wide test range, up to 10000.
2. Fast test speed, completing a single-phase test in 10 seconds.
3. 240*128 color LCD display, making the interactive interface more intuitive.
4. Test for Z-connected transformers.
5. Has blind test turns ratio and group test functions.
6. Non-volatile clock and date display, data storage function (can store 50 sets of test data).
7. Protection function for reverse connection of high and low voltage.
8. Protection function for transformer short circuit and inter-turn short circuit.
9. Thermal printer output function, fast and quiet.
10. Uses both AC and DC power supply modes, usable whether or not there is mains power on site.
11. Small size, light weight, and easy to carry.
Main technical parameters
1. Range: 0.9 to 10000.
2. Accuracy: 0.1% ± 2 digits (below 500);
0.2% ± 2 digits (500 to 2000);
0.3% ± 2 digits (2000 to 4000);
0.5% ± 2 digits (above 4000).
3. Resolution: minimum 0.0001.
4. Output voltage: 160V, 10V automatic gear shifting.
5. Working power supply: AC power supply mode - requires external AC power supply AC220V ± 10%, 50HZ. DC power supply mode - no external power supply needed (the instrument has a built-in lithium battery pack, battery capacity 24V/6Ah).
6. Operating temperature: -20℃ to 40℃.
7. Relative humidity: ≤85%, no condensation
