"Transformer: what is a Transformer? "

What is a Transformer?

A Transformer is a device that changes AC electric energy at one voltage level to AC electric energy at another voltage level of the same frequency through the action of a magnetic field.

 

A Transformer (photo Wikipedia )

Also, The transformer is a static device that transfers the Alternating electric power from one circuit to another at the same frequency.

A transformer consists of:

1. Two or more coils(winding): Coils are wrapped in a common ferromagnetic core and coils are not physically connected to each other.

2. A Core 

Types of transformers coil : 

1. Primary coil (winding)
2. Secondary coil (winding)
3. Tertiary coil (winding) 

Primary coil: One winding connected to a source of AC electric power called a primary coil or input winding.

Secondary coil: The second winding is connected to an electric load known as a secondary coil or output winding.

Tertiary coil: If there is a third winding on the transformer it is called the tertiary winding.

Tension of transformer :

HT( High Tension ):

• High voltage winding known as HT.
• Connected to the high voltage circuit .
• Its can achieve 11 kilovolt.

LT ( Low Tension ):

• Low Voltage winding known as LT
• Connected to the low voltage circuit
• Its can achieve 400 voltage