# Transformer step up and down pdf

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## Difference Between Step-up and Step-down Transformer - Circuit Globe

A Transformer is a static apparatus, with no moving parts, which transforms electrical power from one circuit to another with changes in voltage and current and no change in frequency. There are two types of transformers classified by their function: Step up Transformer and Step down Transformer. A Step up Transformer is a device which converts the low primary voltage to a high secondary voltage i. A Step down Transformer on the other hand, steps down the input voltage i. The following images shows a simple demonstration of the use of Transformers both Step up and Step down Transformers in a typical Transmission System. In order to transmit this voltage over long distances, it is stepped up to kV using a Step up Transformer.
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## What is difference between step up and step down transformer?

Transformer is an electrical device which is used to step up or step down ac voltage. There are two types of transformer,step up and step down. The difference between step up and step down transformer is that step up transformer increases the input voltage and step down transformer decreases the input voltage. A step up transformer has more turns in its secondary winding than its primary winding and is used to increase the ac voltage. The turns ratio for a step up transformer is always greater than 1 because the number of turns in the secondary winding is always greater than the number of turns in the primary winding.

A transformer is static electrical equipment which transforms electrical energy from primary side windings to the magnetic energy in transformer magnetic core and again to the electrical energy on the secondary transformer side. The operating frequency and nominal power are approximately equal on primary and secondary transformer side because the transformer is a very efficient piece of equipment — while the voltage and current values are usually different. Essentially, that is the main task of the transformer, converting high voltage HV and low current from the primary side to the low voltage LV and high current on the secondary side and vice versa. Also, a transformer with its operation principle provides galvanic isolation in the electrical system. With those features, the transformer is the most important part of the electrical system and provides economical and reliable transmission and distribution of electrical energy. The transformer can transfer energy in both directions, from HV to LV side as well as inversely. That is the reason why it can work as a voltage step-up or step-down transformer.

The main difference between step-up and step-down transformer is that, step-up transformer increases the voltage whereas a step-down transformer decreases the voltage. The secondary voltage of step-up transformer is more than that of its primary voltage whereas the secondary voltage of step-down transformer is less than its primary voltage. In fact, these two terms, i.
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## Anandha Jothi Industries

Equality of voltage and current between the primary and secondary sides of a transformer, however, is not the norm for all transformers. Notice how the secondary voltage is approximately ten times less than the primary voltage 0. What we have here is a device that steps voltage down by a factor of ten and current up by a factor of ten:. Turns ratio of yields primary:secondary voltage ratio and primary:secondary current ratio. This is a very useful device , indeed.

A transformer is a static device which transfers a. For economical reasons, electric power is required to be transmitted at high voltage whereas it has to be utilized at low voltage from a safety point of view. This increase in voltage for transmission and decrease in voltage for utilization can only be achieved by using a step-up and step-down transformer. The major difference between step-up and step-down transformer is, step-up transformer raises the output voltage, whereas step-down transformer reduces the output voltage. Some other differences are explained below, in the form of a comparison chart, considering the factors: voltage, winding, the number of turns, thickness of conductor and application. Step-down transformer reduces the output voltage.

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