Maintenance of China oil immersed transformers
- Categories:Oil immersed transformer
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- Time of issue:2022-09-30
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(Summary description)It is overhauled every 10 years after it is put into operation. China oil immersed transformers in operation should be overhauled in advance when abnormal conditions are found or internal faults are found through tests.
Maintenance of China oil immersed transformers
(Summary description)It is overhauled every 10 years after it is put into operation. China oil immersed transformers in operation should be overhauled in advance when abnormal conditions are found or internal faults are found through tests.
- Categories:Oil immersed transformer
- Author:
- Origin:
- Time of issue:2022-09-30
- Views:0
Maintenance of China oil immersed transformers
1. Overhaul period:
It is overhauled every 10 years after it is put into operation.
China oil immersed transformers in operation should be overhauled in advance when abnormal conditions are found or internal faults are found through tests.
When the outlet is short-circuited, overhaul should be considered in advance.
The accident drain pool is cleaned once every 5 years
2. Minor repair cycle (should be arranged in the spring and autumn of each year, or when the line is out of service)
China oil immersed transformers should undergo minor repairs once a year.
3. Maintenance cycle of China oil immersed transformer accessories
Calibration of protective devices and temperature measuring devices, once a year.
The cooling fan motor is disassembled and repaired once a year.
The calibration, inspection and cleaning of automatic devices and control circuits shall be conducted once a year.
4. Maintenance cycle of China oil immersed transformer on-load tap-changer
When the oil quality is found to be lower than the standard during sampling, the oil should be replaced or filtered. Even if the oil pressure exceeds 30KV, the new oil should be replaced once a year.
After the on-load tap-changer newly put into operation has been switched 5000 times or has not reached 5000 times but has been in operation for one year, the switching part should be lifted out for inspection.
When the operation is over 50,000 times, the diverter switch should be overhauled; after five years of operation, the tap changer should also be overhauled, that is, less than 50,000 times.
5. Capacitor bushing of China oil immersed transformer
It should be determined according to the electrical test and the aging of the sealing material.
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