Power Transformers

AC Line Reactors

3 Phase Transformers  3 Phase Converters  Medical Isolation Transformers  Isolation Transformers  Buck Boost Transformers 
Custom Transformers  Step Down Transformers  Step up Transformers  AC Line Reactors  Acme Transformers 
Hammond Transformers  Jefferson Transformers

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Links, Information & Listings for types of Power Transformers. Access to wholesale pricing!

3 Phase Transformers
Used to set voltages in all 3 phase applications where a 3 phase power supply exists.

3 Phase Converters
Convert single phase to 3 phase power when 3 phase is most desirable.

Medical Isolation Transformers
Necessary for any hospital and medical equipment covered by state and federal safety and performance regulations.

Isolation Transformers
Separates the incoming power from that which finally runs the equipment. Protects against unwanted characteristics generated in the use of power within an area.

Buck Boost Transformers
Often used for low voltage applications and raising voltage for 230V motors or 120V lighting systems;
designed to reduce (buck) or raise (boost) line voltage from 5% to 20%.

Custom Transformers
Specific needs can be filled by custom building a transformer to the requirements of the customer.

Step Down Transformers
Adjust voltage from high voltage transmission lines or to correct local lines for chronically high voltage conditions.

Step Up Transformers
Adjust voltage for transmission at higher voltages or to correct local lines for chronically low voltages.

AC Line Reactors
Adjust, block or otherwise handle unwanted power characteristics often generated during normal use of power in an area.

Acme Transformers
A reliable leading American transformer distributing company.

Hammond Transformers
Originated as a family -owned and run company and is now a nation-wide distributor!

Jefferson Transformers
In business over 93 years; supplying a diverse selection of products to an equally diverse clientele.

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PURPOSE AND APPLICATIONS
OF
AC LINE REACTORS

AC Line ReactorsAC Line Reactors act as a buffer and provide some protection against spikes in voltage, can act against transient harmonics which alter the sinusoidal wave pattern desirable for normal AC operations, help correct low inductance loads when using certain motors or combinations of motors, and can work in combination with damping resistors to combat a reflected wave voltage spike.

AC Line Reactors are essentially an inductor made up of coiled wire often surrounding an iron core to concentrate the magnetic lines. When an AC Line Reactor is powered up it has an inertia wherein the existing power stored in the magnetic field surrounding the coils of windings tend to resist changes. Therefore, an incoming spike or change of characteristic will tend to be reduced and lengthened out so the effects will be more mild. Such changes are listed above. When the current is DC the effect will be to lengthen out the rate of change and cause any instantaneous changes in voltage to be reflected in a slow increase or decrease in current.

Harmonics refers to the fact that certain loads, like "six pulse" drives will only draw current at the plus and minus peaks of the line. This makes the wave form as much as 85% distorted when a 3-phase input converter is used (to convert AC to DC) along with six SCRs or six diodes with a filter capacitor bank. By inserting an AC Line Reactor, thus reducing the amplification and lengthening out the wave, the form can be corrected to as little as 35% distortion. This tends to help also in that DC filter capacitors in use can be smaller, heat up less and last longer.

Side effects of AC Line Reactors can include losses in power due to resistance, eddy current losses when the AC Line Reactor has a metal core (due to losses in the changing magnetic field and magnetic realignment in the iron molecules), heating, reduced efficiency, along with increased space requirements, added weight and cost.

Sometimes there is an unwanted synergistic relationship between parts in a line. Stray cable capacitance and other parts such as power correction capacitors can interact with an AC Line Reactor resulting in a resonance.

However, despite these cons, the benefits of a properly installed  AC Line Reactor as given at the beginning more than make up for them. These are mentioned here as the user must anticipate when constructing his system that mediating these less desirable effects will have to be included in the planning stages.

Contact TEMCo for your AC Line Reactor needs. TEMCo carries most major brands and offers competitive pricing with quick delivery. Custom-designed AC Line Reactors can be ordered to fit your exact specifications.AC Line Reactors smoothe out fluctuations in current.

Call (510) 490-2187
(US & International)

 or 1-800-613-2290 (US only)
for
prices and information.
Wholesale Pricing Available!

 

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PURPOSE AND APPLICATIONS
OF
AC LINE REACTORS

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.

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.

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.