Power work, the staff often encounter the problem of measuring transformer dielectric loss, so how to measure the transformer dielectric loss? We can use a VS-2180 automatic anti-interference dielectric loss tester to measure transformer dielectric loss. This article introduces you.
First of all, we can understand the dielectric loss is the dielectric under the action of the electric field, because the internal heating, will convert the electric energy into heat energy consumption, this part of the consumed energy is called the dielectric loss. Medium loss not only consumes electric energy, but also causes the equipment components to heat and affect their normal work. If the dielectric loss is large, it will cause the medium to overheat, which leads to the destruction of insulation, so the smaller the dielectric loss is, the better. This is also one of the important quality standards for the dielectric in ac electric field.
We specifically say how to use the dielectric loss tester to measure the dielectric loss of the transformer. After starting the instrument for measurement, the high voltage set value will be sent to the frequency conversion power supply, which will slowly adjust the output to the value to be set with PID algorithm. Then the measured circuit will send the measured high voltage to the frequency conversion power supply, and then fine-tune the low voltage to achieve accurate high voltage output. In this way, according to the setting of positive/reverse wiring, the instrument will be intelligent according to the test current of the measuring circuit, intelligent automatic selection of input, and switching range. In power transformer for high voltage winding of low voltage winding, and the shell of the dielectric loss, we adopt the method of measurement, instruments and power transformer connected correctly, we chose to use different frequency, 10 kv voltage measurements, the wiring method, is when the participants of the low voltage measurement end or the second end of insulation, grounding directly, will adopt this way. The instrument adopts Fourier transform to filter the interference and separate several waves of the signal, so as to carry out vector calculation of the standard current and the test current, calculate the capacitance of the amplitude, and calculate tgδ Angle difference. After many measurements, an intermediate result is selected by sorting. At the end of the measurement, the measuring circuit will issue an automatic step-down instruction, and then the inverter power supply will slowly step-down to 0.
The above is how to measure the transformer dielectric loss? Concrete solutions have been made to this problem. Dielectric loss tester can not only measure the dielectric loss of transformer, but also the dielectric loss of transformer, capacitor, casing, lightning arrester and other equipment to measure. It has strong anti-interference ability, fast testing speed, high testing accuracy, intelligent automatic measurement advantages, is a good helper for power workers to transformer and other electrical equipment dielectric loss measurement!
The transformer tester produced by Xinsheng neng has the characteristics of high intelligence, complete functions, wide range of use, accurate testing and easy to use. More cable fault tester related articles, as best in xinshengneng official website: www.whxsn.com!
