A varying current in one coil of the transformer. A common use of an electric transformer is to convert the high-voltage electricity in overhead power lines into a lower-voltage connection suitable for home appliances. In practice, most large transformers have built-in cooling systems that use air, liquid (oil or water), or both to remove any waste heat. Typically, the main part of the transformer (the core, and the primary and secondary windings) is immersed in an oil tank with a heat exchanger , pump , and cooling fins attached. Because energy cannot be created or.
Those use a step-up transformer to produce the hundreds of volts to operate the tubes, and thousands of. Large transformers to be used indoors must use a nonflammable liquid or be Dry Type, i. To solve these issues transformers are used in power system. To avoid line losses and voltage drop in lines, transmission of electrical power carried out at maximum voltage. To step up voltage transformers are used in power system.
Line losses ( voltage drops) can be reduced by transmission of electrical power at higher voltages. When a transformer is used to “increase” the voltage on its secondary winding with respect to the primary, it is called a Step-up transformer. When it is used to “decrease” the voltage on the secondary winding with respect to the primary it is called a Step-down transformer.