With the development of the power industry, the increase in electricity consumption, its own transformers and private contracting transformers have gradually occupied a considerable share of the distribution, followed by the purpose of individuals to achieve less payment, more electricity And all kinds of falsification methods (mainly change and change the transformer nameplate); some users steal hundreds of thousands of electricity bills a year , the power sector suffers from no effective control means. The active transformer characteristic-capacity comprehensive tester is a high-precision instrument specially developed and developed by our company for the measurement of transformer capacity and loss parameters. It comes with high-efficiency rechargeable battery, can work without external power supply, can measure 100 times continuously after charging; at the same time, internal digital synthesis three-phase standard sine wave signal (not simply inverter AC output, guarantee non-rated condition The accuracy of the test data of each test item), the three-phase precision AC test source can be provided by the power amplifier; the external three-phase test power supply and the auxiliary equipment such as the voltage regulator and the upflow are not required when measuring the transformer capacity and the short-circuit loss of the transformer. It simplifies wiring and greatly improves work efficiency; the accuracy of capacity test results reaches 100%.
One device is equivalent to two kinds of equipment: active transformer capacity tester + transformer loss parameter tester. It can accurately measure a series of power frequency parameters such as capacity, no-load current, no-load loss, short-circuit loss, and impedance voltage of various transformers. The instrument has the advantages of small volume, light weight, high measurement accuracy, good stability, easy operation and easy to learn. It can completely replace the method of measuring transformer loss and capacity by using multi-meter method. The wiring is simple, the test and record are convenient, and the instrument is greatly improved. Work efficiency. It uses the large-screen image form LCD as the display window. The graphical menu operation is equipped with Chinese character prompts. It has a multi-parameter display interface. The human-machine dialogue interface is friendly, easy to use and fast. It is the first choice for power users at all levels. .
First, the transformer electrical parameter tester (transformer no-load short-circuit tester) features 1, can accurately measure the capacity of various distribution transformers, passive measurement, convenient and accurate. 2, the internal power supply, automatic generation of three-phase high-power test power. 3. It can measure the no-load current, no-load loss, short-circuit voltage and short-circuit loss of the transformer. 4, can automatically perform waveform distortion correction, temperature correction, voltage correction (no-load test under non-rated voltage), current correction (short-circuit test under non-rated current conditions), the operator only needs to input the calibration index instrument according to the type of transformer The corrected result can be calculated automatically, which is very suitable for units that do not have a short-circuit test condition for a slightly larger capacity transformer. 5, voltage loop width limit: the maximum voltage can be measured to 750V, you can ensure accuracy without switching gears. There is no damage to the instrument itself due to the wrong selection of the voltage gear. 6, the battery remaining capacity percentage indication function, is not a simple loss alarm. 7, large screen, high-brightness liquid crystal display, full Chinese menu and operation prompts to achieve friendly man-machine dialogue, touch buttons to make the operation easier, wide temperature LCD with brightness adjustment, can adapt to the winter and summer seasons. 8. The user can print the test data through the micro printer at any time. 9, test result storage function, can store 200 sets of capacity test data . Transformer electric parameter tester (transformer no-load short-circuit tester) technical index 1, input characteristics active part: voltage measurement range: 0~10V current measurement range: 0~10A passive part: voltage measurement range: 0~750V width limit. Current measurement range: 0~100A all internal automatic switching range. 2. Accuracy voltage, current and frequency: ±0.2% power: ±0.5% (CosΦ>0.1), ±1.0% (0.02Φ<0.1)3, working environment: -10°C~ +40°C Charging power supply: AC 160V ~260V4, insulation: (1), voltage and current input terminal insulation resistance of the casing ≥100MΩ.
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