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Ren Yi Electric Encyclopedia: Precautions for oil filling after 35 kV transformer overhaul

Ren Yi Electric Encyclopedia: Precautions for oil filling after 35 kV transformer overhaul

  • Time:2020-07-08 12:39
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(Summary description)After the 35 kV transformer is overhauled, it is necessary to fill the transformer with oil. Before and after the oil filling operation, what are the matters that need to be paid attention to? The editor of the electrician world will take you to understand.

Ren Yi Electric Encyclopedia: Precautions for oil filling after 35 kV transformer overhaul

(Summary description)After the 35 kV transformer is overhauled, it is necessary to fill the transformer with oil. Before and after the oil filling operation, what are the matters that need to be paid attention to? The editor of the electrician world will take you to understand.

  • Categories:Industry News
  • Author:Ren Yi
  • Origin:http://www.scrydq.com
  • Time of issue:2020-07-08 12:39
  • Views:
Information
After the 35 kV transformer is overhauled, it is necessary to fill the transformer with oil. Before and after the oil filling operation, what are the matters that need to be paid attention to? The editor of the electrician world will take you to understand.
 
Oil filling method for 35 kV transformer
 
1. Preparation before oil injection
 
When all parts of the transformer have been installed and carefully checked to confirm that all bolts have been tightened, a pressure oil filter can be used to inject oil from the lower valve of the transformer.
 
When filling oil, the oil temperature cannot be lower than 10 degrees Celsius. The oil is injected from the bottom to facilitate the air in the transformer to be discharged from the gap between the turns.
 
2. Precautions when filling oil
 
1. Loosen the bleed bolts on the parts that accumulate air (such as the upper cover of the thermosiphon, the upper header of the radiator, the manhole door blocking plate, the top of each porcelain bushing and the upper cover of the Buchholz relay), and lower Look up and tighten the butterfly bolt immediately when it leaks oil.
 
2. Open the upper and lower butterfly valves of each radiator and thermosiphon filter. When the oil is filled to a certain level, tap each radiating pipe lightly to check whether it is filled with oil.
 
3. Check each gasket for seepage and oil leakage; when the casing is full of oil, tighten its exhaust bolt; when the oil level is slightly higher than the oil level corresponding to the ambient temperature, stop oiling.
 
4. After stopping the oil filling, immediately clean the outer surface of the transformer to wipe off all the oil stains with a cloth; after the transformer is allowed to stand for 24 hours, check the sealing condition of the gaskets, and loosen the exhaust bolts again to drain as much as possible In the exhaust process, once oil leakage is found, tighten the exhaust bolt to prevent residual gas from entering the Buchholz relay when the transformer is heated during operation, causing the relay to malfunction.
 
 
 
Sichuan Renyi Electric Co., Ltd. is registered under the name of Ren Yi, a senior technician for substation maintenance, and uses scientific research, knowledge innovation, publicity, promotion, and teaching that the temperature of electrical contacts (connectors) is lower than the temperature of its conductors (wires). The theory and technology of "thermal electrical contacts" produces and sells registered trademark electrical equipment that does not heat electrical contacts (joints), as a whole with patented products.
Previous: Ren Yi Electric Encyclopedia: What is the specific classification standard of cable flame retardant grade? Tell you all at once
Next: Ren Yi Electric Encyclopedia: Transformer Core Structure
Previous: Ren Yi Electric Encyclopedia: What is the specific classification standard of cable flame retardant grade? Tell you all at once
Next: Ren Yi Electric Encyclopedia: Transformer Core Structure
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