Transformer Ratio and Vector Group Tester
Darui Electric recommends:
The Transformer Ratio and Vector Group Tester is mainly used for testing the turns ratio or voltage ratio of transformers. It features a large high-resolution LCD screen, is powered by lithium battery for convenient field use, and has a Chinese menu prompt function for easy and intuitive operation. It completes three-phase ratio testing in one go, with fast testing speed and high accuracy.
Detailed Information:
The "Preventive Test Regulations" of the Ministry of Electric Power require regular turns ratio or voltage ratio testing of transformers, including semi-finished and finished products during production, before commissioning, and during operation in the power system. Traditional ratio bridges are cumbersome to operate, readings are not intuitive, necessary conversions are required, and test results only reflect one phase ratio.It overcomes the shortcomings of traditional ratio bridge testing, completes three-phase ratio testing in one go, with fast testing speed and high accuracy, greatly improving testing efficiency.
Product 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 with capacity 24V/6Ah).
6. Operating temperature: –20℃ to 40℃.
7. Relative humidity: ≤85%, no condensation.
Transformer Ratio and Vector Group TesterMain Functions and Features:
1. Wide testing range, up to 10000.
2. Fast testing speed, completes single-phase test in 10 seconds.
3. 240*128 color LCD screen, more intuitive interface.
4. Z-connection transformer testing.
5. Has blind testing of ratio and vector group 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 silent.
10. Uses both AC and DC power supply modes, can be used with or without mains power on site.
11. Small size, light weight, easy to carry.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
