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Product — Power frequency withstand voltage and partial discharge test system — Power frequency withstand voltage and partial discharge test system - oil transformer
Product name：Power frequency withstand voltage and partial discharge test system - oil transformer
Executive standard：GB/T 16927 High voltage test technology and relevant standards of various products
Other name：AC withstand voltage test device, power frequency test equipment, partial discharge test equipment, non partial discharge test transformer and oil immersed test voltage device
Component：Test transformer, voltage divider and coupling capacitor, control and measurement system (intelligent or electric) voltage regulator
During partial discharge test：Add partial discharge instrument, power filter and shielding room; When triple frequency is selected, it can be used for induced voltage withstand test of voltage transformer;
| Purpose & brief description |
| ● It is mainly used to test the insulation level of various insulating materials, insulating structures, electricians, power products, etc. to withstand power frequency voltage and induced withstand voltage. It is also used as the power supply for power frequency test without partial discharge of various test objects; ● 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, capacitor bushing, motor, lightning arrester, photovoltaic products and other high-voltage electrical components and insulating materials; |
| Test purpose |
| ● It is used to test the insulation strength of various electrical products, electrical components and insulating materials under the specified voltage, assess the insulation level of the products, find the insulation defects of the tested products and measure the overvoltage capacity; ● The purpose of partial discharge test is to find defects in equipment structure and manufacturing process; For example, the local electric field intensity inside the insulation is too high; Metal parts have sharp corners; The insulation is mixed with impurities or partially defective, and the electrical connection between metal grounding parts and conductors in the product is poor, so as to eliminate these defects and prevent partial discharge from damaging the insulation; |
| Technical parameter |
| ● Working power supply: 220V / 380V, 50 / 60Hz ● Test voltage: 1-1000kv ● Test capacity: 1 -- 1000KVA ● Test voltage waveform: the distortion rate of sine wave waveform is less than or equal to 3% ● Accuracy of test voltage: Level 1 ● The system has overvoltage protection, overcurrent protection, discharge protection and breakdown trip protection; ● Transformer type: oil immersed test transformer |
| Technical features |
| ● The product has small partial discharge and low temperature rise, which is superior to the provisions of the national standard; ● Low impedance voltage and low no-load loss, which is superior to the national standard ● Adopt automatic control technology and computer (photoelectric) measurement and control, with high degree of automation and strong anti-interference ability; ● Adopt fast power protection device with high reliability; ● The test transformer adopts high-quality imported silicon steel sheet, new insulation materials, the latest design theory and special production process. They are small and light, but have high voltage level and large output capacity; ● There are two common structures of the test transformer. One is that the upper column is the core column, the lower, left and right columns are the yoke column, and the upper core column is equipped with high-voltage coil (progressive coil) and low-voltage coil; In case of large capacity, high voltage, low impedance and low local discharge, another structure is adopted, that is, the upper and lower are core columns, the left and right are yoke columns, and the upper and lower core columns are respectively equipped with high-voltage coils (progressive coils) and low-voltage coils, which can be used in series and parallel; ● The winding structure is improved to have good impulse voltage distribution characteristics; ● Reasonably select and improve the field strength distribution to effectively reduce the local discharge; ● Reduce the height of the area occupied by unbalanced ampere turns of the coil and reduce the axial electric force of the coil |
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
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