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20 06,2024
How is the External Withstand Voltage Test conducted?
How is the External Withstand Voltage Test conducted? The External Withstand Voltage Test is a one-minute AC high-voltage test conducted on the tested transformer, also known as the AC Withstand Voltage Test. This test is employed to assess the insula...
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19 06,2024
What types of capacitive bushings are there?
What types of capacitive bushings are there? For voltage levels of 110kV and above, using oil-immersed bushings would result in excessively large dimensions. Therefore, it is necessary to employ solid insulation manufactured based on the principle of ...
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18 06,2024
How is the lightning arrester protection of the transformer carried out?
How is the lightning arrester protection of the transformer carried out? The lightning arrester is the most crucial basic component for protecting power generation equipment and transmission and transformation equipment. It also forms the foundation f...
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17 06,2024
What are the precautions for live oil filtration?
What are the precautions for live oil filtration? a. Throughout the entire process of live oil filtration and degassing, the gas relay circuit of the transformer must be connected to the signal circuit to prevent gas leakage and oil running in the pip...
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15 06,2024
How are the deviation values of transformer parameters and the parameters using peak values specified?
How are the deviation values of transformer parameters and the parameters using peak values specified? The specifications for evaluating the performance parameters of transformers are determined by technical conditions, and each standard value has cor...
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15 06,2024
How are the deviation values of transformer parameters and the parameters using peak values specified?
How are the deviation values of transformer parameters and the parameters using peak values specified? The specifications for evaluating the performance parameters of transformers are determined by technical conditions, and each standard value has cor...
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15 06,2024
How are the deviation values of transformer parameters and the parameters using peak values specified?
How are the deviation values of transformer parameters and the parameters using peak values specified? The specifications for evaluating the performance parameters of transformers are determined by technical conditions, and each standard value has cor...
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14 06,2024
How is the testing of transformer oil conducted?
How is the testing of transformer oil conducted? The dielectric strength test of transformer oil is conducted using a 500mm³ standard oil cup in a 60kV AC frequency oil tester. The brass electrodes of the oil cup have a diameter of 25mm, and the surfa...
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11 06,2024
How is the measurement of insulation resistance and absorption ratio conducted?
How is the measurement of insulation resistance and absorption ratio conducted? Insulation resistance, denoted as R, is typically determined by applying a voltage of 2500V for 60 seconds and measuring the resulting value using a megohmmeter with a max...
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07 06,2024
How is the measurement of winding resistance conducted?
How is the measurement of winding resistance conducted? When measuring winding resistance, both the bridge method and voltage drop method are employed. For resistance values exceeding 100, a single-arm bridge is utilized, while for values below 102, a...
