«Үш фазалы трансформатор»
https://youtu.be/H2hYUu8lPY0
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Карашаш апа 19,03
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https://youtu.be/H2hYUu8lPY0
Laminated and well insulated iron cores are used for the completion of the magnetic circuit and to reduce iron and eddy current losses. ...............sheets are assembled in a series manner and to form the laminated core. The thickness of a core is kept 0.5 mm. The windings are wounded in the limb. ............are used between the high voltage and low voltage windings to prevent the short circuit. The primary and secondary winding are placed for the transformation of power. These may be wound in cylindrical or sandwich types. The tank or box protects all the windings and cores from the atmospheric effect . The three phase winding is inserted info the tank. The conservator is the drum, which is used as oil storage tank and it is mounted on the top of the transformer. The oll level indicator is used to indicate the oll level in the conservator. A ............is used to prevent the transformer oll from the atmospheric pressure. Buchholz relay is installed between the ...........and......... Buchholz relay is a qas actuated relay installed in oil immersed transformers for protection against all kinds of faults. ...................detects the incipient faults at a stage much earlier than is possible with other forms of protection. The bushings provide proper insulation between live conductor and earthed tank. ............provides an exit path to the qases produced in the transformer due to all kinds of faults. ..............is used to discharge excess pressure in the atmosphere when excess pressure is developed inside the transformer during loading. These are used for transformer cooling purpose. ................ is a thermometer which is mounted on the transformer to measure its temperature. Drain vaive is used to drain oil from the transformer . Oil is used for cooling purpose. The oil used should not have a flash point less than 1600 C. The freezing point should not be higher than 150C and ite viscosity should be 300C and 150C.
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