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Noticias de la compañía | estranguladores de modo común | Noticias de la Industria | transformador|RJ45 connectors
1.Al reemplazar el aislamiento, se debe garantizar el rendimiento del aislamiento.
Pruebe el rendimiento del aislamiento de reemplazo durante el procesamiento y utilícelo solo si cumple con los requisitos. Se debe prestar especial atención al aislamiento de los bloques de madera del soporte de plomo. Antes de la instalación, el bloque de madera debe colocarse en el termo high frequency transformador,current transformador aceite alrededor de 80°C durante un período de tiempo para asegurar el aislamiento del bloque de madera.
2.The insulation test of high-frequency transformador should be carried out when the high-frequency transformador 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 transformador 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 transformador, which is more reliable.
3.Preste atención a las esquinas afiladas del núcleo cuando vuelva a instalar el núcleo
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 transformador 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.Reemplace el material de bobinado con una fuerte resistencia al cortocircuito
1.Al reemplazar el aislamiento, se debe garantizar el rendimiento del aislamiento.
Pruebe el rendimiento del aislamiento de reemplazo durante el procesamiento y utilícelo solo si cumple con los requisitos. Se debe prestar especial atención al aislamiento de los bloques de madera del soporte de plomo. Antes de la instalación, el bloque de madera debe colocarse en el termo high frequency transformador,current transformador aceite alrededor de 80°C durante un período de tiempo para asegurar el aislamiento del bloque de madera.
2.The insulation test of high-frequency transformador should be carried out when the high-frequency transformador 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 transformador 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 transformador, which is more reliable.
3.Preste atención a las esquinas afiladas del núcleo cuando vuelva a instalar el núcleo
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 transformador 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.Reemplace el material de bobinado con una fuerte resistencia al cortocircuito
