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Power Transformer and its Design

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The power transformer is one of its kind and many people are not aware of its high-intensity performance. People are often found in immense confusion when it comes to choosing a transformer. A power transformer is the most recommended one. Before knowing its unique features, it is important to understand that what is a power transformer? A power transformer is an electrical device whose work is to transform power from one circuit to another keeping the frequency constant. The increased demand from the side of the customers is the primary reason for the power transformer manufacturers to manufacture it in large numbers. Its high insulation level and maximum efficiency help to complete the work in an easy and efficient manner. Also, there are several uses and applications of a power transformer that induces individuals to choose this transformer over the other options. The prices set by the manufacturers for these transformers are nominal and performance is just flawless. The power transformer is works on high voltage.

Design of the Power Transformer:

When it comes to the design of the power transformer then a power transformer has a robust style design. The power transformer manufacturers design the power transformer with metal which is laminated by sheets. The skeleton of the transformer is connected with the help of conductors in order to make 1-phase or 3-phase transformers.

Also, there is a conservatory on the oil tank so that the increasing oil can fall into it. In order to change the number of turns for the high voltage low-current winding there is a charger of load taps in the side of the tank. The brushing of tanks helps in the entry and exit of the conductors without restoring the outer shell. The best part about the power transformer is that it can work beyond the small rating and stays within 65-degree Celsius rise of the temperature. For the normal functioning of the power transformer, power transformer manufacturers’ in-build a fan so that those fans can cool the transformer whenever it begins to heat after working for a specified amount of time.

The power transformers are designed very carefully keeping all the factors in mind. The manufacturers know that people are wholly dependent on these transformers for their work and are expecting a satisfactory result. They don’t want people to get disappointed and therefore they do their best to give the customers the best.

 

Design Threads:

Here we refer to the winding data on the dimensions of the enameled copper wire table and the transformer stamping table to select the input and output windings SWG and the core of the transformer to the given specifications.

The design process is followed by assuming that the following specifications of the transformer are given: -

  • Secondary voltage (Vs)
  • Secondary  current (Is)
  •  Turns ratio (n2/n1)

From these given descriptions we calculate tongue width, stack height, core type, window area as follows: -

Secondary Voltage-Amps (SVA) = Secondary Voltage (Vs) * Secondary Current (IS)

Primary Voltage-Amps (PVA) = Secondary Voltage-Amps (SVA) / 0.9 (assuming transformer efficiency up to 90%)

Primary voltage (VP) = Secondary voltage (vs) / ratio (N2 / N1) changes

Primary Current (IP) = Primary Voltage-Amps (PVA) / Primary Voltage (VP)

The requirement of the cross-sectional area of ​​the core is given by: - ​​Core area (CA) = 1.15 * sqrt (primary volt-amps (PVA))

 Gross Core Area (GCA) = Core Area (CA) * 1.1

The number of turns on the winding is determined by the ratio given as follows: - Turn per volt (Tpv) = 1 / (4.44 * 10-4 * core area * frequency * flux density)

 

 

 

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