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Новости компании | синфазные дроссели | Новости отрасли | трансформатор|RJ45 connectors
1.При замене изоляции должны быть гарантированы характеристики изоляции.
Проверьте характеристики сменной изоляции во время обработки и используйте ее только в том случае, если она соответствует требованиям. Особое внимание следует уделить изоляции деревянных блоков свинцового кронштейна. Перед установкой деревянный брусок следует поместить в тепловую high frequency трансформатор,current трансформатор масло при температуре около 80°C в течение определенного периода времени, чтобы обеспечить изоляцию деревянного блока.
2.The insulation test of high-frequency трансформатор should be carried out when the high-frequency трансформатор is sprayed with oil for 24 hours
Since some wet insulation parts will be immersed in hot oil for a long time, moisture will spread to the insulation surface, so insulation defects cannot be detected after oil injection. For example, a 110 kVA + low-voltage side of 31.5 MWa is treated with a 10kV copper rod support block. After injecting high-frequency трансформатор oil, everything is normal in the test, and the insulation resistance of the 10kV low-voltage side to the core, wire clamp and ground is reduced to about 1Ω. After inspection of the hanging hood, it was found that the insulation of the 10kV copper bar supporting wooden block was very low. Therefore, the insulation test should be carried out after 24 hours of oil injection in the high-frequency трансформатор, which is more reliable.
3.Обратите внимание на острые углы сердечника при переустановке сердечника
When installing a yoke on the iron core, pay attention to the sharp corners of the core chip, and the insulation between the oil channels should be measured in time, especially the sharp corners of the chip at the oil passage to prevent the overlap of chips from causing the core to be grounded at multiple points. For example, when replacing a 120MVA220kV high-frequency трансформатор with a low-voltage side yoke, the insulation between the oil channels was not measured in time because the sharp corners of the chip were not paid attention to, and the insulation between the oil channels was measured to be 0 after installation. After zui, because the sharp corner of the core chip is short-circuited to the oil channel, it takes a long time to find.
4.Заменить материал обмотки с высокой устойчивостью к короткому замыканию
1.При замене изоляции должны быть гарантированы характеристики изоляции.
Проверьте характеристики сменной изоляции во время обработки и используйте ее только в том случае, если она соответствует требованиям. Особое внимание следует уделить изоляции деревянных блоков свинцового кронштейна. Перед установкой деревянный брусок следует поместить в тепловую high frequency трансформатор,current трансформатор масло при температуре около 80°C в течение определенного периода времени, чтобы обеспечить изоляцию деревянного блока.
2.The insulation test of high-frequency трансформатор should be carried out when the high-frequency трансформатор is sprayed with oil for 24 hours
Since some wet insulation parts will be immersed in hot oil for a long time, moisture will spread to the insulation surface, so insulation defects cannot be detected after oil injection. For example, a 110 kVA + low-voltage side of 31.5 MWa is treated with a 10kV copper rod support block. After injecting high-frequency трансформатор oil, everything is normal in the test, and the insulation resistance of the 10kV low-voltage side to the core, wire clamp and ground is reduced to about 1Ω. After inspection of the hanging hood, it was found that the insulation of the 10kV copper bar supporting wooden block was very low. Therefore, the insulation test should be carried out after 24 hours of oil injection in the high-frequency трансформатор, which is more reliable.
3.Обратите внимание на острые углы сердечника при переустановке сердечника
When installing a yoke on the iron core, pay attention to the sharp corners of the core chip, and the insulation between the oil channels should be measured in time, especially the sharp corners of the chip at the oil passage to prevent the overlap of chips from causing the core to be grounded at multiple points. For example, when replacing a 120MVA220kV high-frequency трансформатор with a low-voltage side yoke, the insulation between the oil channels was not measured in time because the sharp corners of the chip were not paid attention to, and the insulation between the oil channels was measured to be 0 after installation. After zui, because the sharp corner of the core chip is short-circuited to the oil channel, it takes a long time to find.
4.Заменить материал обмотки с высокой устойчивостью к короткому замыканию
