WJBC-VI fully automatic ratio group tester
1. Overview
The "Preventive Test Procedures of the Ministry of Electric Power" requires regular turns ratio or voltage ratio testing of transformers, including semi-finished products and finished products during the production process, before being put into operation, and during operation in the power system. The operation of the traditional transformation ratio bridge is cumbersome, the readings are not intuitive, and necessary conversions are required, and the test results only reflect one phase transformation ratio. This instrument overcomes the shortcomings of the traditional transformation ratio bridge test and completes the three-phase transformation ratio test at one time. The test speed is fast and the accuracy is high, which greatly improves the test efficiency.
2. Performance characteristics
1. Wide test range, up to 10,000.
2. The test speed is fast, and the single-phase test can be completed in 10 seconds.
3. 240*128 color LCD display, the interactive interface is more intuitive.
4. Z-shaped connection transformer test.
5. It has blind test ratio and group test functions.
6. Clock and date display without power loss, data storage function (can store 50 sets of test data).
7. High and low voltage reverse connection protection function.
8. Transformer short circuit and inter-turn short circuit protection function.
9. Thermal printer output function, fast and silent.
10. It adopts AC and DC power supply modes and can be used whether there is commercial power on site.
11. Small size, light weight, easy to carry.
3. Technical indicators
1. Measuring range: 0.9~10000.
2. Accuracy: 0.1%±2 words (less than 500);
0.2%±2 words (500～2000);
0.3%±2 words (2000～4000);
0.5%±2 words (above 4000).
3. Resolution: minimum 0.0001.
4. Output voltage: 160V, 10V automatic shifting.
5. Working power supply: AC power supply mode - external AC power supply AC220V±10%, 50HZ is required.
DC power supply mode - no external power supply required (the instrument has its own lithium battery pack, battery capacity 24V/6Ah).
6. Operating temperature: –20℃～40℃.
7. Relative humidity: ≤85%, no condensation.
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