Page 243 - Electrician - TT (Volume 1)

ELECTRICIAN - CITS

MODULE 8 :Transformer Connection and Testing

LESSON 41-49 : Transformer - principle - classfication -

EMF equation

Objectives

At the end of this lesson you shall be able to:
• explain the principle construction and EMF equation of transformer
• explain transformer parts and their functions cooling methods
• state the princple construction of auto- transformer
• explain current and potentional transformer
• explain voltage regulation.

Static electrical deviceTransfers electric power from one circuit to another. It does so without a change of
frequency. It accomplishes this by electromagnetic induction. Transformer can change the voltage levels of the
circuits. There are two or more electric circuits coupled magnetically.

Principile Of Operation

It is based on principle of MUTUAL INDUCTION.
An e.m.f. is induced in a coil whenan when neighbouring coil changes
Construction Details

CITS : Power - Electrician & Wireman - Lesson 1
230