Voltech logo
    • Login
  • Welcome
  • Applications
  • Products
  • Support
  • Contact Us
Voltech logo
  • Welcome
  • Applications
  • Products
  • Support
  • Contact Us
Contact Voltech
USA 1-239-437-0494
EUR 44 1235 861173
ASIA 44-1235-364-001
or
Email Voltech
Voltech on LinkedIn Voltech on YouTube Voltech on Twitter
    • Login
Technical Document Reader
Document
086-627
Name

The Voltech Handbook of Transformer Testing

Description
This article covers a wide range of transformer theory and Voltech's testing capability.
The Voltech Handbook of Transformer Testing
Back
to Index
Skip Navigation Links.
Collapse 1 Transformer Basics1 Transformer Basics
1.1 Basic Transformer Theory
1.2 B-H Curves
1.3 Hysteresis Loss
1.4 Eddy Current Loss
1.5 Transformer Equivalent Circuit
1.6 Self Resonant Frequency
Expand 2 Available Tests2 Available Tests
Expand 3 Examples of Different Transformer Types3 Examples of Different Transformer Types

1. Transformer Basics

1.1 Basic Transformer Theory

Figure 1 represents the essential elements for a transformer - a magnetic core, with a primary and secondary coil wound on the limbs of the magnetic core.


Figure 1. A Basic Transformer

An alternating voltage (Vp) applied to the PRIMARY creates an alternating current (Ip) through the primary.

This current produces an alternating magnetic flux in the magnetic core.

This alternating magnetic flux induces a voltage in each turn of the primary and in each turn of the SECONDARY.

As the flux is a constant e.g. the same in both primary and secondary: -
Vp = const Np
Vs = const Ns

This equation shows that a transformer can be used to step up or step down an ac voltage by controlling the ratio of primary to secondary turns. (Voltage transformer action).

It can also be shown that: -

Primary VoltAmperes = Secondary VoltAmperes

VpIp = VsIs

This equation shows that a transformer can be used to step up or step down an ac current by controlling the ratio of primary to secondary turns. (Current transformer action)

It will be noted that there is no electrical connection between the primary and secondary windings.

A transformer therefore provides a means of isolating one electrical circuit from another.

These features - voltage/current transformation and isolation, cannot be obtained efficiently by any other means, with the result that transformers are used in almost every piece of electrical and electronic equipment in the world.

Prev Next
Email Voltech
USA 1-239-437-0494
EUR 44 1235 861173
ASIA 44-1235-364-001
Site Map
Terms Of Business
Terms Of Use
Privacy
  • Terms Of Use
  • Privacy
  • Terms Of Business
  • Site Map
Contact Voltech
USA 1-239-437-0494
EUR 44 1235 861173
ASIA 44-1235-364-001
or
Email Voltech
 
Submit "Red" = required field
Please, complete all required fields.
Please, select country from the list.
Please, enter a valid Email.
Thank you for your question. We will reply to your request as soon as possible.
An error occurred.
Voltech © 2021
Voltech on LinkedIn Voltech on YouTube Voltech on Twitter
We have placed cookies on your computer to help make this website better.
Please read our Privacy Statement for further information. Otherwise, we'll assume you're OK to continue.
OK, Don't Show This Message Again