Selection of  Voltage Transformers

Voltage Transformers Home

  What is a Voltage Transformer
Find out the different applications of voltage transformers and how they work.

Selection of Voltage Transformers
Provides guidelines on how to size and select the right voltage transformer for the application. 

  High Voltage Transformers
These transformers are designed to handle large amounts of electricity, usually from 600 - 5,000v.
 

Medium Voltage Transformers
Offers the most load diversity and is offered in a wide range of configurations.

  Low Voltage Transformers
Used most frequency in lighting applications. Are designed to reduce 120 voltages down to 12 voltages.
 

  Isolation Transformers
Applications and how isolation transformers are used to protect equipment.

Selection of  Voltage Transformers

There are a wide array of voltage transformers and each one does a specific job. The most common one are the used in our electrical distribution system where they are used to step-up and step-down power. But many companies use transformers where applications match the voltage of a motor which does not match their system. Voltage transformers are also used to isolated a computer or solid state device from system voltage due to voltage drop in an extremely long run of wire. 

Many people get confused on what a voltage transformer can and cannot do. Below is a table of some of those things.
 

note: There are special purpose constant voltage transformers that can do this.

Selection of Voltage Transformers

When selecting a voltage transformers you will need the following:

• What is the voltage of the load? The voltage transformer must have an output voltage which matches the load voltage.

• Is it single-phase or three phase? Remember the transformer cannot change phases. A three phase load must have a three-phase voltage transformer.

• What is the power requirement for this load? you need to arrive at a KVA value. If only amps are known, use the the following formulas or your supplier can help you on choosing the right size voltage transformer.

Single-phase KVA = Volts (loads) x Amps (load) 1000

Three-phase KVA = Volts (loads) X Amps (loads) x 3 1000 where 3=1.732

• What is the frequency of the load and line (hertz or Hz) Remember transformers cannot change frequency.

• What is the supply or source voltage? are primary taps required? 

• Is there a special temperature rise or insulation system requirement?

• If the transformer to be installed inside or outside?

We understand that you still might have questions regarding the selection of your voltage transformer.  TEMCo knowledgeable engineers will be happy to answer any questions. TEMCo staff will help you in designing, manufacturing, troubleshooting and engineering of your voltage transformers. They understands the need for low cost, high quality voltage transformers and can delivered in just a few days. Call TEMCo today at 1-800-613-2290 for all questions.

 For the absolute best prices and quick shipping give the team at TEMCo a call today!

1-510-490-2187 or 1-800-613-2290

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Selection of a  Voltage Transformer

Looking for the best Voltage Transformer the team at TEMCo can certainly help you. Call today at:
1-800-613-2290

Step-Down Transformers
It is defined as a transformer that reduces or step-down voltage.

  Step-Up Transformers
A step-up transformer is designed where the secondary voltage is greater than it's primary voltage and step-up the voltage.

   Distribution  Transformers
Are categorized in dry-type or liquid-immersed type, and available in single or three phase.

  TEMCo Voltage Transformers
TEMCo is a leader in the Manufacturing of transformers and has been in business for over 25 years.

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