Power transformer before overhaul, need to check the internal short-circuit impedance parameters of the transformer, so need to use the transformer short-circuit impedance tester, the device is widely used in the high-voltage power test industry, so it is very popular, so what are the advantages of the transformer short-circuit impedance tester? This article will give you a brief introduction.
Low voltage basically short circuit impedance measurement of the conventional experimental items of the project, by comparing the short-circuit impedance value of the transformer before and after the impact of the short-circuit current, the change according to the size of the degree of deformation of the winding can be preliminarily estimated. Transformer and test the initial short-circuit impedance of the low voltage changes after the short-circuit current effect should not exceed 2%.
Low voltage test work is identified in the operation of the transformer short-circuit impedance impacted by the short circuit current, or transformer affected during transportation and installation of mechanical force, check whether the winding deformation can be the most direct management method, it is for us to judge transformer can be put into the market development has very important significance, It is also one of the enterprises to judge whether the transformer meets the requirements of students for social disintegration examination. Transformer short circuit impedance tester internal adjustable power input and output, especially suitable for the field of 110kV and above the main transformer low voltage short circuit impedance measurement instrument. The main technical characteristics of the instrument company are:
The instrument comes with adjustable power output, no matter single-phase or three-phase transformer, only one wiring, the instrument can complete all the winding pair measurement, testing, wiring is simple.
In order to meet the requirements of DL/T1093-2008 Winding deformation detection and Judgment Guide, experiments and algorithms of winding deformation detection and judgment are studied. "DL/T1093-2008" clearly stipulates: 5.4.1a, "Principle of Parameter Testing for single-phase method"; 5.4.1e "When the test result is abnormal, to deal with all single-phase method recheck of the winding". The instrument adopts single-phase measurement and automatically calculates the short-circuit impedance of each transformer phase for the three-phase boost process, reactance, and inductance values.
Instrument company internal control using phase-locked loop technology, synchronous sampling AC signal, measurement data can be accurate. This instrument measures voltage, current, power, frequency and so on. Single measurement of working voltage, current protection range wide, support external CT, PT further development to expand the measurement range. Built-in no power off memory, long-term storage of measurement data, the instrument has its own printer. Test data can be imported into a computer for further analysis or storage. All Chinese menus and operation tips for easy and intuitive operation. Transparent type combined with large screen for LIQUID crystal, clear data display under direct sunlight.
Transformer short circuit impedance tester has many advantages, so it is very popular with the majority of power workers, we need to master the working principle and method of this equipment, successfully complete the test in the work.
Wuhan Xinshengneng Technology Co., Ltd. is a professional transformer test equipment manufacturers, the production of products, models, cost-effective products, welcome to call 0312-3188565 consultation!
