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Nouvelles de la société | selfs de mode commun | Nouvelles de l'industrie | transformateur|RJ45 connectors
1.Lors du remplacement de l'isolation, les performances d'isolation doivent être garanties
Testez les performances de l'isolant de remplacement pendant le traitement et utilisez-le uniquement s'il répond aux exigences. Une attention particulière doit être portée à l'isolation des blocs de bois du support de plomb. Avant l'installation, le bloc de bois doit être placé dans le high frequency transformateur,current transformateur huiler à environ 80°C pendant un certain temps pour assurer l'isolation du bloc de bois.
2.The insulation test of high-frequency transformateur should be carried out when the high-frequency transformateur 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 transformateur 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 transformateur, which is more reliable.
3.Faites attention aux angles vifs du noyau lors de la réinstallation du noyau
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 transformateur 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.Remplacez le matériau d'enroulement par une forte résistance aux courts-circuits
1.Lors du remplacement de l'isolation, les performances d'isolation doivent être garanties
Testez les performances de l'isolant de remplacement pendant le traitement et utilisez-le uniquement s'il répond aux exigences. Une attention particulière doit être portée à l'isolation des blocs de bois du support de plomb. Avant l'installation, le bloc de bois doit être placé dans le high frequency transformateur,current transformateur huiler à environ 80°C pendant un certain temps pour assurer l'isolation du bloc de bois.
2.The insulation test of high-frequency transformateur should be carried out when the high-frequency transformateur 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 transformateur 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 transformateur, which is more reliable.
3.Faites attention aux angles vifs du noyau lors de la réinstallation du noyau
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 transformateur 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.Remplacez le matériau d'enroulement par une forte résistance aux courts-circuits
