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أخبار الشركة | اختناقات الوضع المشترك | اخبار الصناعة | محول|RJ45 connectors
1.عند استبدال العزل ، يجب ضمان أداء العزل
اختبر أداء العزل البديل أثناء المعالجة ، واستخدمه فقط إذا كان يفي بالمتطلبات. يجب إيلاء اهتمام خاص لعزل الكتل الخشبية لقوس الرصاص. قبل التثبيت ، يجب وضع الكتلة الخشبية في العازل الحراري high frequency محول,current محول زيت حوالي 80 درجة مئوية لفترة من الزمن لضمان عزل الكتلة الخشبية.
2.The insulation test of high-frequency محول should be carried out when the high-frequency محول 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 محول 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 محول, which is more reliable.
3.انتبه إلى الزوايا الحادة للنواة عند إعادة تثبيت القلب
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 محول 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.استبدل مادة اللف بمقاومة قوية لدائرة كهربائية قصيرة
1.عند استبدال العزل ، يجب ضمان أداء العزل
اختبر أداء العزل البديل أثناء المعالجة ، واستخدمه فقط إذا كان يفي بالمتطلبات. يجب إيلاء اهتمام خاص لعزل الكتل الخشبية لقوس الرصاص. قبل التثبيت ، يجب وضع الكتلة الخشبية في العازل الحراري high frequency محول,current محول زيت حوالي 80 درجة مئوية لفترة من الزمن لضمان عزل الكتلة الخشبية.
2.The insulation test of high-frequency محول should be carried out when the high-frequency محول 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 محول 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 محول, which is more reliable.
3.انتبه إلى الزوايا الحادة للنواة عند إعادة تثبيت القلب
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 محول 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.استبدل مادة اللف بمقاومة قوية لدائرة كهربائية قصيرة
