Step-Up Transformer

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Link: Three Phase Transformer

Three-Phase Transformers

Step-Up Transformer  Step-Up Transformers 
Step-Down Transformers  TEMCo Step-Down Transformers 
What is a Transformer? Selection of an TEMCo Transformer 
Low-Voltage Transformers Buck Boost Transformers 
Three-Phase Transformers Auto Transformers

Step-Up and Step-Down Transformers are usually also Three-Phase when used in transmission facilities.

Step-Up Transformer Home
Links, Information & Listings
for types of Step-Up Transformers. Access to wholesale pricing!

Step-Up Transformers
Details and further information regarding installation and basic configurations.

Step-Down Transformers
Fundamental data regarding transformers used in step-down applications.

TEMCo Step Down Transformers
A basic description and links to TEMCo transformers recommended for step-down applications.

What is a Transformer?
Essential data about the design and use of a transformer.

How to select a TEMCo Transformer
from a reliable leading American transformer distributing company.

Low-Voltage Transformers
Descriptions and uses of transformers specializing in low-voltage applications

Buck Boost Transformers
This special type of transformer described and explained. Includes links to sites where they can be purchased.

Three-Phase Transformers
Why are there three-phase transformers, and what do they do? How are they different from single-phase?

Auto Transformers
How do auto transformers differ from other transformers? Links to catalog pages included.

Three-Phase Transformers


Three-Phase TransformersThree-Phase Transformers are one of the work horses of a power transmission and distribution system.  They are actually among the most often used on the transmission part of the system, and are also an integral part of the industrial part of the distribution system.

To answer the question of why there are Three-Phase Transformers, one has to understand first the basic design of the power generators from which almost all power is derived.

The more efficient generation systems are in three phases.  A Phase is essentially one portion of a period in which the armature of a generator completes one revolution.  As it rotates, it passes by either fixed and permanent magnets or electromagnets attached to its casing on the inside, just a breath away from the armature and its windings or magnets.  Since there are commonly three circuits independent of each other, either on the armature or on the fields, it is considered that electricity produced this way is in three phases.  Consequently, there will be three output lines and any transformer used to modify power coming from such a generator will also have to have three lines; one to handle each phase.  Thus you have what is called a Three-Phase Transformer.

There may also be a fourth neutral line that allows simultaneous service for both high-voltage and single-phase applications.

Three-Phase Transformers are characterized by the presence of three separate coupled windings; each designed to transform one of the three incoming lines from the main generator, transmission or distribution source.  In effect, a Three-Phase Transformer is actually a group of Single-Phase Transformers built into one.  Therefore, a Tree-Phase Transformer can also be considered to be one of many others, as in Step-Up Transformer, Step-Down Transformer, and Auto Transformer.

Using a Three-Phase Transformer assures proper power service for industrial applications with 240v supply needs.  It is also common to split off a single-phase service from a Three-Phase system down-line from a Three-Phase Transformer.  Once a service has been supplied from a single-phase source (120v), as is found in most residential applications, it is necessary to use a special application, like a Rotary Phase Converter to run three-phase equipment.

Three-Phase is often cheaper and more efficient as it carries higher voltages that travel with less resistance over smaller lines.  Cost of lines and losses to resistance are reduced and saves money.

TEMCo can answer your Three-Phase Transformer questions and needs.  At TEMCo most major brands of Three-Phase Transformers can be purchased at competitive prices with fast delivery.

Contractors and individuals who need portable power sources and lighting may also want to check out the Diesel Generators available through TEMCo.Three-Phase Transformers are produced using the same mathematical fundamentals as a Single-Phase Transformer.

Call (510) 490-2187
(US & International)
 or 1-800-613-2290 (US only)
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Three-Phase Transformers

Transformer Resources:

Isolation Transformers
Isolation transformers of all types, including custom order equipment built to your specifications!

Medical Isolation Transformers
A source for a broad selection of medical grade isolation transformers, including custom order equipment built to your specifications!

Buck Boost Transformers
A wide range of Buck Boost Transformers and brands to select from.

Custom Transformers
Your specific needs can be supplied here with limited
delay and great pricing on custom designed equipment.

Step-Down Transformers
Power Transformers designed to reduce voltage to an optimum range. Descriptive data included.

Step-Up Transformers
Power Transformers designed to increase voltage to an optimum range. Descriptive data included.

AC Line Reactors
Listings of 3 phase devices used as filters rather than for changing voltage.

Acme Transformers
An expansive selection of Power Transformers for all applications.

Hammond Transformers
Primarily dealing in copper-wound transformers.

Jefferson Transformers
All American-made products. Located in Brownsville, Texas.

Static Phase Converters
Critical information regarding the difference between static phase and rotary phase converters. A must for anyone considering these alternatives!

Phase Converter
Read about the technology differences between the types of phase converters available from this top phase converter manufacturer.

Diesel Generators
Access information and pricing on a variety of brands and types of diesel generators designed to fit every need! Custom-built generators can also be ordered.
Top Diesel Generator Models available wholesale including PTO Generators and Mobile Light Towers.


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