Delta to Star Transformer connection:

This diagram shows how to make Delta to Delta transformer connection. In this circuit, we will describe how to connect the delta to the delta transformer. A star connection occurs when one head of each coil in a three-phase system is connected to another to create a neutral point or star. It is referred to as a delta connection in a three-phase system when the beginning of the first phase is connected to the end of the second phase, the end of the third phase to the beginning of the fourth phase, and the end of the fifth phase to the beginning of the first phase.

Diagram of Delta to Star Transformer connection:

Components needed For this Project:

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Components used to make the Delta to Star Transformer connection:

01. Transformer:

The primary voltage of the transformer is 11 KV and the secondary is 0.4 KV high voltage. This is a delta star transformer, the high voltage of this transformer uses a delta connection and the low voltage uses a star connection.11KV power transformers are commonly used in power transmission substations to step down high-voltage transmission to distribution levels. 11KV transformers are more often used in distribution substations and on utility poles to further step-down voltage for supply.

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Frequently asked questions

What is the use of the Delta to Star Connection transformer?

Delta–star transformer was used at the generator side to step up the voltage levels and Star – delta transformer was used at the load side of distribution systems the step down the voltage levels. Star–star connection transformers were used for small, high-voltage transformers.

What is a delta connection transformer?

The delta connection consists of 3-phase windings connected end-to-end which are 120° apart from each other electrically. A delta connection was a connection used in a 3-phase electrical system in which 3 elements in series form a triangle, the power supply being input and output at the three junctions.

What is the principle of a transformer?

The transformer can increase or decrease the voltage with a corresponding decrease or increase in current. Working principle of transformer. The basic principle behind the working of the transformer was the phenomenon of the mutual induction between 2 windings linked by common magnetic flux.

What is the maximum efficiency of a transformer?

Maximum Efficiency in a transformer was when copper loss = iron loss. The transformer that has a variable load is designed to ensure the maximum efficiency. This is when the full load was at about 75%. Such transformers are often referred to as distribution transformers.

Why efficiency of the transformer is high?

As the transformer operates of the the magnetizing phenomenon and it has no rotating parts, its efficiency was very high. It usually stays above 95% but as the power flow across a transformer is very high even small changes in terms of efficiency percentage give significant energy savings.

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Delta to Star Transformer connection