Transformer Types – Types of Transformer – Electrical Transformers Types

A transformer is a static electrical device
that transfers electrical energy between two or more circuits through electromagnetic induction. A varying current in one coil of the transformer
produces a varying magnetic field, which in turn induces a varying electromotive force
or EMF in a second coil. Power can be transferred between the two coils,
without a metallic connection between the two circuits. There are several transformer types used in
the electrical power system for different purposes, like in power generation, distribution
and transmission and utilization of electrical power. In this video I will going to show you Different
types of Transformer. There are seven categories of transformer
are made for different purposes. 1. According to Construction. 2. According to Core Medium. 3. According to Voltage Level. 4. According to Type of supply. 5. According to Their use. 6. According to Instrument Transformer. 7. According to the Place of Use. According to Construction. The construction of a transformer is dependent
upon how the primary and secondary windings are wound around the central laminated steel
core. The two most common and basic designs of transformer
construction are the, core type Transformer and the Shell type Transformer. Core Type Transformer. In core type transformer, windings are cylindrical
former wound, mounted on the core limbs as shown. The cylindrical coils have different layers
and each layer is insulated from each other. Low voltage windings are placed nearer to
the core, as they are easier to insulate. Sell type Transformer. The coils are former wound and mounted in
layers stacked with insulation between them. A shell type transformer may have simple rectangular
form or it may have a distributed form. According to Core Medium. Based on the medium placed between the primary
and secondary winding the transformers are classified as, Air core transformer and Iron
core transformer. Air Core Transformer. The primary and secondary windings wounded
on non-magnetic strip where the flux linkage between primary and secondary is through the
air. The mutual inductance effect is less in air
core compared to iron core i.e. the reluctance offered to the generated flux is high in the
air medium where as in the iron core it is less. But the hysteresis and eddy current losses
which are dominant in iron core type are less or completely eliminated in air core type
transformer. Iron Core Transformer. The primary and secondary windings are wound
on multiple iron plate bunch which provide a perfect linkage path to the generated flux. It offers less reluctance to the linkage flux
due to the conductive and magnetic property of the iron. These are widely used transformers in which
the efficiency is high compared to the air core type transformer. According to Voltage Level. These are the most commonly used transformer
types for all the applications. Depends upon the voltage ratios from primary
to secondary windings, the transformers are classified as, step-up and step-down transformers. Step Up Transformer. On a step-up transformer there are more turns
on the secondary coil than the primary coil. The induced voltage across the secondary coil
is greater than the applied voltage across the primary coil or in other words the voltage
has been stepped-up. Step Down Transformer. A step down transformer has less turns on
the secondary coil that the primary coils. The induced voltage across the secondary coil
is less the applied voltage across the primary coil or in other words the voltage is stepped-down. According to Type of supply. These are the most commonly used transformer
types for Depends on supply line. There are classified as, Single Phase Transformer
and Three Phase Transformer. Single Phase Transformer. Single-phase transformers accept single-phase
AC power and output single-phase AC power, typically at a higher or lower voltage level. Energy is transferred from one circuit to
one or more circuits via electromagnetic induction. Three Phase Transformer. Three-phase electric power is a common method
of alternating-current electric power generation, transmission, and distribution. It is a type of poly phase system and is the
most common method used by electrical grids worldwide to transfer power. According to Their Use. According to the necessity, these are classified
as the power transformer, distribution transformer measuring transformer, and instrument transformer. Power Transformer. A transformers located directly next to a
power plant is called GSU Generator Step-up Unit. A GSU transforms the electric power from the
medium voltage of the generators to the high voltage transmission level. To balance power flow between parallel power
lines, phase shifters can be used. Distribution Transformer. A distribution transformer or service transformer
is a transformer that provides the final voltage transformation in the electric power distribution
system, stepping down the voltage used in the distribution lines to the level used by
the customer. Instrument Transformer. Instrument transformers are high accuracy
class electrical devices used to isolate or transform voltage or current levels. Instrument transformer are classified as,
Current transformer and Potential transformer. Current Transformer CT. A current transformer is an electric device
that produces an alternating current in its secondary which is proportional to the AC
current in its primary. Potential Transformer PT. Voltage transformers, also called potential
transformers PT, are a parallel connected type of instrument transformer. They are designed to present negligible load
to the supply being measured and have an accurate voltage ratio and phase relationship to enable
accurate secondary connected metering. According to the Place of Use. These are classified as indoor and outdoor
transformers. Indoor transformers are covered with a proper
roof like as in the process industry. The outdoor transformers are nothing but distribution
type transformers. Dear sir, Thanks for watching the video. More update please subscribes our channel
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10 comments on “Transformer Types – Types of Transformer – Electrical Transformers Types”

  1. Duarte Freitas says:


  2. Jack Thompson says:

    Accent is over the top

  3. Antonio Herrera says:

    Correction pls, not sell type transformer but “SHELL” type

  4. james tomlin says:

    What the hell is phage?

  5. daudi maniseli says:

    Good goood explanation…me from Tanzania


    sir transformer ki Kitni testing hoti hai

  7. hitesh Parmar says:

    Sir Hindi me khe ge to acha rhe ga

  8. प्रविधि हाम्रो भविष्य /Technology says:



    U r Amazing…….good job…in simple language….tnx

  10. Kevin Corrales says:

    Hello, where can I find transformers core type? I mean what type of machines use it? Thanks for your help

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