According to the national standard GB1094 "Power Transformers" and GB/T6451-1999 "Technical Parameters and Requirements for Three-Phase Oil-Immersed Power Transformers", the transformer capacity and no-load/load characteristic tester can test various models and specifications of oil-immersed transformers, dry-type transformers, and special transformers with voltage levels of 6, 10, 35kV and capacity ranging from 30 kVA to 40000kVA, including capacity, no-load loss, and load loss. When testing no-load loss and load loss, it can be directly tested without external power supply and voltage regulator. It can also identify and test transformers with different connection groups (Y/yn0 or D/yn11). Even if the transformer is at different tap positions, there is no need to adjust the tap changer; simply select on the instrument.
The transformer capacity and no-load/load characteristic tester is also called transformer copper and iron loss tester. It adopts low voltage and low current testing method, enhancing the safety of testing work. At the same time, the built-in power supply can provide large output power, ensuring the accuracy of test data and providing reliable signals for testing large-capacity transformers.
In addition to testing transformer capacity, load characteristic test, and no-load characteristic test, the transformer capacity and no-load/load characteristic tester can also meet the measurement of voltage, current, power, frequency, short-circuit impedance, and other transformer parameters. The instrument is small in size, light in weight, simple in wiring, convenient in operation, accurate in measurement, good in stability, and easy to learn. It is an indispensable device for electricity inspection departments.
Main Features
l Large screen, high brightness, wide temperature liquid crystal display, all measurement data displayed on one screen, with Chinese information prompts. The LCD brightness and contrast can be adjusted, and it can be clearly displayed even under strong sunlight.
l The tester has a built-in micro printer with Chinese character printing output, allowing test results to be printed directly on site.
l Built-in protection circuit to avoid instrument damage and personnel accidents.
l Long-life touch keys for easy operation; most operations can use default settings, with one-key operation all the way.
l Built-in high-energy power supply can complete all test items. During on-site testing, the instrument does not need external power supply, voltage regulator, current booster, or other auxiliary equipment.
l Unique power-saving mode ensures completion of field testing for multiple transformers of various models.
l Can test transformer capacity at non-rated tap positions.
l Test data is stable with good repeatability.
l Simple wiring; only two wiring clamps are needed to complete the test. The test does not distinguish phases; any two phases can be selected.
Functional Features
1. Can accurately measure the capacity of various distribution transformers, passive measurement, convenient and accurate.
2. Can measure no-load current, no-load loss, short-circuit voltage, short-circuit loss, and zero-sequence impedance of various types of transformers.
3. Can automatically perform waveform distortion correction, temperature correction, voltage correction (no-load test at non-rated voltage), and current correction (short-circuit test at non-rated current). The operator only needs to input the correction index according to the transformer type, and the instrument will automatically calculate the corrected results. This is very suitable for units that do not have conditions for short-circuit tests on slightly larger capacity transformers.
4. Allows external connection of voltage transformers and current transformers for extended range measurement, and can measure test objects with any parameters.
5. Wide voltage range: maximum voltage measurement up to 750V, ensuring accuracy without switching gears. It will not damage the instrument due to incorrect voltage gear selection.
6. Large screen, high brightness LCD display, full Chinese menu and operation prompts for friendly human-machine dialogue. Touch keys make operation easier, and the wide temperature LCD with brightness adjustment can adapt to winter and summer seasons.
7. Users can print out test data at any time through the micro printer.
