Triple frequency induced overvoltage withstand test device is used to check for electrical equipment for processing frequency voltage insulation performance is an important measuring tool, adopts frequency modulation method, fully satisfy all kinds of voltage grade cable, bus, main transformer, GIS and other electrical insulation test of high voltage equipment, everybody know about the below, triple frequency induced overvoltage withstand test device which have advantage in practical work.
Advantages of triple frequency induction withstand voltage test device in power system application:
1, the weight and volume of triple frequency induction withstand voltage test device is greatly reduced, not only eliminating the cumbersome high-power voltage regulator and ordinary high-power power frequency test transformer, and frequency induction excitation power supply only needs to test capacity of 1/Q, so that the weight and volume of the system is greatly reduced, generally 1/10-1/30 of the ordinary test device.
2, the required power capacity is greatly reduced. Power supply is the use of frequency induction reactor and the tested product capacitor frequency induction to produce high voltage and high current, in the whole system, the power supply only needs to provide the system active power consumption part, therefore, the test power supply required only 1/10 of the test capacity.
3. Improve the waveform of output voltage. Frequency induction power supply is a frequency induction filter circuit, which can improve the waveform distortion of the output voltage, obtain a good sine waveform, and effectively prevent the breakdown of the harmonic peak on the test.
4. There will be no recovery overvoltage. Try breakdown occurs, lost frequency induction conditions, high voltage, arc immediately put out, also immediately disappear and the recovery voltage to build process is very long, it is easy to disconnect the power supply before flashover voltage again, the voltage of the recovery process is a kind of intermittent oscillation process of energy accumulation, the process is long, and there will not be any recovery over-voltage.
5, to prevent large short-circuit current burns the fault point. In the frequency induction state, when the insulation weakness of the sample is broken down, the circuit is immediately detuned, and the loop current rapidly drops to 1/Q of the normal test current. And parallel frequency induction or test transformer to do the voltage test, the breakdown current immediately rose dozens of times, compared to the two, short circuit current and breakdown current hundreds of times. Therefore, frequency induction can effectively find the weakness of insulation, and there is no big short circuit current burn worries.
Wuhan Xinshengneng Technology Co., Ltd. is a professional manufacturer of electric power testing equipment, producing high voltage testing equipment with complete models, friendly functions, stable performance and accurate measurement data. By the majority of users friends of the favor, welcome to call 0312-3188565 details!
