- Monitor the transformer oil and analyze it regularly: taking oil samples is an essential prerequisite to any maintenance. An oil sample is such an important source of information as to the transformer condition that it is essential that extreme care is taken in obtaining it in order to ensure that the information gained is not misleading. There are strict procedures on how to take a proper sample (e.g. British Standard 5263, or IEC publication 475), but as an owner - make sure that the oil is sampled and analyzed regularly by a professional. Megawatt Transformers has an oil analysis lab and offers oil sample collection and analysis with same day results.
- Visual inspection: visual inspection of power transformers on a routine basis can provide clues to the condition of the transformer. 'Wet', slow leaking transformers with patches of oil on their exterior indicate a leakage in the seals, a crack in the insulators or damaged fins. Other visual inspection includes the condition of the silica gel aerator for change of color. All these may indicate an impeding problem with the transformer insulation system.
- Keep clean: keeping the transformer exterior clean and its surroundings tidy facilitates quick spotting of oil leaks. In addition, it helps cooling the fins/cooling pipes. Keeping the surroundings tidy reduces the chances of fire damage should the power transformer overheats. Megawatt Transformers provides complete power transformer maintenance and repair.
- Check operation of fault analysis devices: The gas and oil actuated relay (Buchholtz) is used extensively to disconnect a transformer from teh supply in case of an interturn (core related) fault or any other internal failure. These are extremely important safeguards, and their operation must be checked periodically. Dissolved gas analysis devices also fall into this same category.
Sunday, September 6, 2009
Top maintenance tips for power transformers
Power transformers are expensive machines, and they require regular maintenance like we all do.
Here are the top tips to keep power transformers healthy and prolong their service life, roughly in order of importance:
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ReplyDeleteThank you for sharing this blog about the maintenance of power transformer. I hope you will post more about it.
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ReplyDeleteIts really a great piece of information.In order to maintain the transformers in an efficient way,proper care should be taken like, good maintenance of transformer, Proper Transformer services,maintaining of good Energy auditing services and much more things.So it is necessary to have good maintenance to get good efficiency.
ReplyDeleteYou know that all power transformers are firstly tested during installation. Engineer has been checked all part of the transformer. We also check all the parts of the transformer during the working stage.Thanks for sharing all important maintenance tips of transformer.
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The oil level in oil cap under silica gel breather must be checked in one month interval. If it is found the transformer oil inside the cup comes below the specified level, oil to be top up as per specified level.
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