English
Pусский
Français
Portugues
Español
العربية
lingua italiana
日本語
한국어
Türk dili
Unternehmens Nachrichten | Gleichtaktdrosseln | Branchen-News | Transformator|RJ45 connectors
1.Beim Austausch der Dämmung sollte die Dämmleistung gewährleistet sein
Testen Sie die Leistung der Ersatzisolierung während der Verarbeitung und verwenden Sie sie nur, wenn sie den Anforderungen entspricht. Besonderes Augenmerk sollte auf die Isolierung der Holzblöcke der Bleihalterung gelegt werden. Vor dem Einbau sollte der Holzklotz in die Therme gelegt werden high frequency Transformator,current Transformator ca. 80°C ölen, um die Isolierung des Holzklotzes zu gewährleisten.
2.The insulation test of high-frequency Transformator should be carried out when the high-frequency Transformator 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 Transformator 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 Transformator, which is more reliable.
3.Achten Sie beim Wiedereinbau des Kerns auf die scharfen Ecken des Kerns
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 Transformator 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.Ersetzen Sie das Wicklungsmaterial mit starker Kurzschlussfestigkeit
1.Beim Austausch der Dämmung sollte die Dämmleistung gewährleistet sein
Testen Sie die Leistung der Ersatzisolierung während der Verarbeitung und verwenden Sie sie nur, wenn sie den Anforderungen entspricht. Besonderes Augenmerk sollte auf die Isolierung der Holzblöcke der Bleihalterung gelegt werden. Vor dem Einbau sollte der Holzklotz in die Therme gelegt werden high frequency Transformator,current Transformator ca. 80°C ölen, um die Isolierung des Holzklotzes zu gewährleisten.
2.The insulation test of high-frequency Transformator should be carried out when the high-frequency Transformator 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 Transformator 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 Transformator, which is more reliable.
3.Achten Sie beim Wiedereinbau des Kerns auf die scharfen Ecken des Kerns
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 Transformator 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.Ersetzen Sie das Wicklungsmaterial mit starker Kurzschlussfestigkeit
