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Product — Lightning impulse test system — Impulse voltage test system
Product name：Impulse voltage test system
Executive standard：GB/T16896 High voltage impulse measuring instrument and software、DL/T848.5 Impulse voltage generator and relevant standards of various products
Other name：Lightning impulse voltage test system, lightning impulse voltage generator, impulse voltage generator, pulse voltage generator
Component：Impulse voltage generator body, charging device, thyristor voltage regulating device, voltage divider, control and measurement system, cut-off device (for transformer product test), steepening device (for insulator test)
| Purpose & brief description |
| ● The impulse voltage generator is mainly used for the impulse voltage test of lightning impulse voltage full wave, lightning impulse voltage cut-off wave and operating impulse voltage wave of power equipment and other test objects to test the insulation performance. ● The standard waveform of lightning impulse voltage is 1.2/50 μ s. Is the lightning discharge voltage generated when simulating lightning flash discharge; ● The standard waveform of operating impulse voltage is 250 / 2500 μ S or attenuated oscillation wave with wave front time of 2000 ~ 3000 is the operating overvoltage generated during analog switch operation or system fault. ● Application: power product manufacturing companies, power operation departments, scientific research institutions and colleges and universities. ● Application products: all kinds of insulating parts, medium voltage switchgear, GIS high voltage switch, cable and cable accessories, transformer, power transformer, high voltage circuit breaker, lightning arrester, capacitor bushing and other high voltage electrical components and insulating materials |
| Test purpose |
| ● Impulse voltage refers to the voltage with extremely short action time, such as lightning impulse voltage or operation impulse voltage. It can produce great current energy in an instant. ● Impulse voltage tester is a test equipment for lightning simulation test according to lightning waveform. Non destructive test, creepage distance verification, insulation performance test, lightning protection performance test and other test occasions to assess the insulation performance of products. ● Impulse voltage: impulse voltage test can be used not only to study the insulation performance of power equipment under atmospheric overvoltage (lightning stroke), but also to study the insulation performance of power equipment under operating overvoltage. At the same time, impulse voltage test is also needed in many aspects, such as EMC Research and discharge mechanism research. ● Full lightning wave: the ability of equipment insulation to withstand lightning impulse voltage is tested by manually simulating lightning current waveform and peak value. See if it can pass (or destroy) ● Lightning chopping: for transformer, it is equivalent to the waveform generated by protection gap or air insulation flashover when lightning wave enters the substation. It is the waveform in which the full lightning wave is suddenly cut off, and the voltage drops sharply to zero. The truncation time can occur in the wave front or wave tail. The wave cutting test is also a test of transformer equipment. ● Operating wave: operating impulse withstand voltage, which is the operating overvoltage generated during switching operation. These indexes are of great significance to the safe operation of high voltage circuit breaker. ● Lightning impulse voltage test: ● Positive voltage assessment: external insulation of the product: if the product height and creepage distance are enough. ● Negative voltage assessment: internal insulation of products: such as internal insulation design problems of products. |
| Technical parameter |
| ● Working power supply; 220V/380V,50/60Hz ● Output impulse peak voltage: 1-7200kv, accuracy ± 3%. ● Lightning full wave waveform ● Wavefront time 1.2 μ s±30% ● Half peak time after wave 50 μ s±20% ● Lightning cut-off waveform - mainly used for transformer ● Wavefront time 1.2 μ s±30% ● Cut off time 2 μ s~5 μ s ● Standard Lightning Impulse cut-off refers to 2 ~ 5 μ S standard impact truncated by external gap ● Operating wave waveform ● Wavefront time 250 μ s±20% ● Half peak time after wave 2500 μ s±60% ● The duration of operating impulse voltage wave is much longer than the wavelength of lightning impulse voltage, and its shape is more complex, and its shape and duration vary with the specific parameters and length of the line. However, internationally, it tends to be represented by a long pulse with a wave front of hundreds of microseconds and a wavelength of thousands of microseconds ● Output mode ● Impact times 0-99 times and continuous output setting ● Interval 0-99s continuous setting |
| Technical features |
| ● All generated waveforms comply with national standards and IEC world standards, and all technical indexes reach the advanced level of similar products in the world. ● The charging device is used to charge the impulse voltage body in parallel. By triggering the ignition device, the ball gap of the body is triggered synchronously to form series discharge. The voltage enters the measurement system through the weak resistance juney voltage divider to display the voltage waveform. ● Complete set of equipment, complete voltage level and high measurement accuracy; ● The loop inductance is small, and band stop filtering measures are taken to generate standard shock wave under large electric capacity load, with large load capacity; ● High voltage utilization factor, with lightning wave and operation wave not less than 90% and 80% respectively; ● The impact body has compact structure, advanced technology, reliable quality, beautiful appearance, convenient wave adjustment, simple operation, good synchronization performance and reliable action; ● Adopt constant current charging automatic control technology, with high degree of automation and strong anti-interference ability; ● Electronic delay adjustable circuit or L-C delay mode shall be adopted for chopping delay; ● Computer controlled measurement (optical fiber) system with strong anti-interference ability and high degree of automation. |
Feidian electric energy provides more professional testing equipment and technical services for power transformer, transformer, switch, high-voltage cable, power capacitor, bushing, insulator, lightning arrester, motor and other manufacturers
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Shanghai Feidian Electric Co.,Ltd
Address：Lingang section of Shanghai Pilot Free Trade Zone
Tel：13761804576
Email：zhangzaihui@126.com
Web site：www.feidian.net.cn
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