Conservator tank is partly filled with transformer oil. Now, we describe why the conservator tank fitted to the power transformer. Oilfilled sealed transformers without conservator are mainly used in distribution networks mvlv and in installations up to 52 kv, with a rated power up to 2. A conservator tank of transformer provides adequate space to this expanded transformer oil. Power transformers are defined as transformers rated. It is a cylindrical tank mounted on supporting structure on the roof of the transformers main tank. If the auxiliary tank contains a diaphragm that separates the liquid from the gas, the configuration is considered to have a conservator. In electrical systems and equipment third edition, 1992.
When volume of transformer insulating oil increases due to load and ambient temperature, the vacant space above the oil level inside the conservator is partially occupied by the expanded oil. Function of conservator tank of a transformerwhen transformer is. Conservator tank of a transformer this is a cylindrical tank mounted on supporting structure on the roof the transformer main tank. The conservator tank is a tank fitted above the level of top cover of oil filled transformer to allow for expansion and compression of the oil in question.
The air cell flexible separator is fitted inside a conservator tank, isolating. What is conservator tank of transformer electrical. Oil can be filled into the transformer tank without being exposed to the air. A conservator tank is a oil filled tank, mounted above the main transformer tank and piped into it. If an auxiliary tank is added to the transformer, so as to maintain the complete immersion of the main tank components, the arrangement is still a sealed system.
Consequently, corresponding quantity of air of that space is pushed away through breather. Details of conservator tank of transformer is given below. Function and working of conservator tank in transformers power. It is connected to main tank of the transformer by short length pipe line. Conservator tank is a cylindrical oil container used in high power transformers and is closed at both the ends.
Transformers are typically used because a change in voltage is needed. Whenever the ambient temperature of the transformer rises, the volume of transformer oil increases. It is also necessary to exclude moisture from the air space above the conservator oil level, in order to maintain the dryness of the transformer oil. It also acts as a reservoir for transformer insulating oil. Basics, maintenance, and diagnostics vi contents continued page 2. The conservator tanks provides adequate space for expansion of oil inside the transformer. It is usually filled half way maybe 50 to 200 gallons, and is used to keep the level of the oil in the main tank always full. Although it is now common for many of the smaller distribution transformers to dispense with a conservator see, for example, esi standard 35. It is a cylindrical shape tank which is placed on the top of the transformer. The main function of conservator tank of transformer is to provide adequate space for expansion of oil inside the transformer. Conservator is provided to take care of the expansion and contraction of transformer oil, which takes place during normal operation of the transformer. If the transformer is provided with a buchholz relay, install it in the conservator before. On other hand, when load of transformer decreases, the transformer is switched off and when the ambient.
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