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AL101 Transformer Intelligent Comprehensive Test System Implementation of standards. GB 1094.5-2003 、GB/T 6451-200 1. System function System adopts PLC to auto control and finish test procedure, along with monitoring of upper machine. Upper IPC adopts friendly imaging man-machine interface, with which procedure and condition of test can be visually monitored, and control operation be done directly. Test database is added to upper machine software, enabling the auto save of test data, and generating of real-time test report. System adopts RS485 communication, stable and reliable, with strong anti-interference ability. Wide range of application, full function, suitable for test and measurement of various kinds of transformer. Real time display of test volume, and display of its stable curve. Test of comprehensive performance of transformer can be finished when wire once. Real time save and print of test result, and test data for processing and analysis in future. Test report and data are transmitted to storage medium through floppy drive, USB port and network port. Multi-data display of real time parameter of transformer test, distribution service data from calculation analysis and data curve of time interval, with supervision center monitoring the state of entire transformer test. Historical data recording and superior data query: save of overall historical data of transformer test for operator to analyze running and forecast trend, etc.; capable of quick query and retrieval of real time test data of comprehensive performance and historical data. Capable of software update on basis of original test system. Our self-manufactured high performance testers are installed in the control cabinet, each having a high measuring accuracy.
2. Our self-manufactured high performance testers are installed in the control cabinet: (1) No-load and load tester Function: measuring of loss in no-load and load test of transformer (double- table method, three-table method), and of power factor, average value of voltage, and effective value of current and voltage. To measure and calculate no-load current, and no-load loss after waveform is rectified. Loaded impedance voltage, impedance voltage and loss when rectified to temperature of 75℃ and 120℃ Measuring of frequency of power system voltage Technical index: (when not connected with mutual inductor outside) Measuring range： Voltage measuring range: 0V～500V
Current measuring range: 0A～5A
Power measuring range: 0W～2500W, when at COSφ=0.1～1
Frequency measuring range: 45Hz～65Hz Error range: Voltage: 0Ｖ～50V，±0.2%Fs；50V～500V, relative error ≤±0.2%
Current: 0A～1A ，±0.2%Fs；1A～5A, relative error ≤±0.2%
Power: 0W～2500W, relative error ≤±0.3%Fs.
Frequency: ≤0.5Hz. absolute error within full-scale range
Measuring range of equipment can be expanded by the external connection with mutual inductor (2)Transformation ratio tester Function: Auto zero position calibration guarantees an optimum behavior for equipment all along. Auto gain calibration, with which user can self-correct accuracy of equipment. High accuracy: range of transformation ratio 1~10000 0.1grade Capable of measuring the transformation ratio of various groups of transformer △/Y、Y/△、Y/Y、△/△、Y/Z、Z/Y、△/Z、Z/△. Technical index: (when not connected with mutual inductor outside) Measuring range of transformation ratio: 1.0000~9999.9 Accuracy: 0.1grade Group measuring range: 00~11(00 stands for 12) Working environment: Input voltage: AC 220±22V 50Hz±1Hz
Temperature: -10~55℃
Humidity: ＜85%RH (3) (3) DC resistance tester Function: FK-Ⅳ transformer DC resistance tester, which is easy to operate, accurate in measurement, safe and reliable, has strong anti-interference ability and quick test speed, is a perfect choice for measuring coil resistance of power transformer. Current test: DC constant current: 0.1A、1A、2A Test range:： 0.1A、1A、2A Test range： 0.1A ： 20Ω—199.99Ω
1A : 5Ω—19.99Ω
2A ： 2mΩ—4.999Ω 2A ： 2mΩ—4.999Ω resolution: 1 uΩ accuracy: 0.2grade