TEMCo Standard and Custom Transformer Manufacturer

TEMCo is a Transformer Manufacturer You Can Trust - a Member of The Better Business Bureau. TEMCo  Is an Accredited Member of the Better Business Bureau.  Offering Stock and Custom Transformers.

TEMCo is a Standard and Custom Transformer Manufacturer you can trust - a member of the Better Business Bureau.

Dyn11 Transformer

Quality Built Standard and Custom Dyn11 Transformers
Your search for high quality, obscure, hard to find, or standard Dyne11 transformers is over!

Lowest Prices for Quality Dyn11 Transformers - Guaranteed!
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1-800-613-2290 (US Calls) or 1-510-490-2187 (US & International)
Fax 1-510-490-1507 email: info@temcotransformer.com  www.TemcoTransformer.com

Order Transformer Panel Transformer Liquid Transformer Cast Transformer Liquid Filled Transformer Filled Transformer Triple Shielded Transformer Transformer Shield Pad Mounted Switchgear Pad Mounted Switch Pad Mounted Distribution Transformer Pad Mount Switches Air Transformer Stacked Lamination Core Transformer Banked Transformer 4 Coil Transformer Mains Transformer Mains Isolating Transformer Delta Transformer 220v Transformer 120v Transformer 24v Transformer 12v Transformer  Microwave Transformer Fuse Transformer Switching Transformer Surge Transformer Power Factor Transformer Neutral Transformer Meter Transformer Overload Transformer Phase Shifting Transformer Star Transformer Dyn11 Transformer High Frequency Transformer Ignition Transformer Filament Transformer Magnetic Transformer Transformer Switch Aluminum Transformer Plastic Transformer Waterproof Transformer NEMA Transformer Stainless Transformer Fiberglass Transformer Silicone Transformer Standard Transformer Transformer Manufacturer Home

TEMCo - The Best Selling Custom Transformers in America



Transformer Home
TEMCo Transformer manufactures a wide variety of high quality stock and custom transformers. Trust TEMCo as your transformer manufacturer supplier.

Phase Converter
TEMCo Rotary Phase Converters provide balanced 3-phase power converted from a 1-phase power source.  Also read about Static Phase Converter and CNC Phase Converters.

Motor Generator Set
TEMCo Motor Generator Sets are used to provide load isolation, frequency conversion, and phase conversion.

Electric Motor
TEMCo carries thousands of models and brands of electric motors, motor control, and drives such as Baldor Motors, WEG and Leeson at wholesale prices!

Power Generator
TEMCo carries thousands of models and brands of electric generators such as Robin Generators, Pow'R Gard and Baldor Generators at wholesale prices!

Variable Frequency Drive
TEMCo caries a range of high quality VFDs are wholesale prices. Applications range from controlling speed, torque, breaking, direction, multi-speed, etc.

Custom Power Transformers
TEMCo offers highest quality custom transformers fast! 5-day turn around on most models. Call our Transformer Manufacturer Specialists with your specs. We will give you a quote and get your custom transformer order started today! 510-490-2187.

More Transformers
TEMCo offers the widest range of stock power transformer models.  Read about additional power transformer types and find the type you require today.


State-of-the-Art Stock & Custom Dyn11 Transformer Manufacturer Offering Top Quality at Wholesale Prices

Dyn11 Transformers

Call TEMCo today for delivering leading industry products that will supply your electrical needs and help sustain your business functions, such as ordering a Dyn11 transformer for a new building or power expansion.  Call us today at 510-490-2187. 

Dyn11 Transformers Explained

Transformers like the Dyn11 transformer are now categorized with a vector group designation that refers to the phase angle shift between the secondary and the primary.  In today's power system practices this is a big issue and this data must be available for correct interfacing and operation of systems.  Interconnecting two power generation or transmission networks can result in adverse power characteristics if not done correctly.  Particularly, the phase angle of each system must be matched with the other system or circulating currents can develop.  Also, power in one can buck with power in another and cause loss in efficiency.  Or power in one can boost power in the other and create overloads.  Special phase shifting transformers exist for the purpose of adjusting such loads to match phase angles.

Dyn11 Transformer Notation Explained

In the dyn11 transformer designation, each letter and the number have specific data to communicate.  It defines the primary and secondary types, indicates the presence or lack of a neutral, and gives the phase angle displacement between them.   Sometimes you will see other letters used that are not seen on this one notation (Dyn11).  These will be included below so you will recognize them when you see them.  When indicating the primary circuit, the letters are always upper case.  When indicating the secondary circuit they are always lower case.

dyn11 means:

D - Primary is DELTA connected (a delta transformer primary)

y - Secondary is WYE, or STAR, connected (a  star transformer secondary)

n - Indicates a Neutral Point existing in the secondary connection

11 - Indicates a 30ْْ  lag in phase


11 refers to the 11 o'clock position.  Adopted international convention uses the hour indicator system to represent phase displacement.  According to this convention, rotation is always considered counter-clockwise.  The use of a particular number of degrees, then, will say whether it is leading or lagging.  In the Dyn11, the 11 indicates 330ْ  lagging.   Any reference to 30ْ  in regards to a Dyn11 is about leading voltage or the amount it is off from 12.  A minus sign will indicate low voltage lagging high voltage; a plus sign indicates low voltage leading high voltage.


Each hour represents 30ْْ . 

1 = 30ْْ  lagging / 330ْْ  leading

2 = 60ْْ  lagging / 300ْْ  leading

3 = 90ْْ  lagging / 270ْْ  leading

6 = 180ْْ  lagging / 180ْْ  leading

12 = 0ْْ  or 360ْ  neither leading nor lagging


Other letter designations which may be also used:

HV - High Voltage (primary)

hv - High Voltage (secondary)

LV - Low Voltage (primary)

lv - Low Voltage (secondary)

Z - Interconnected Star* (primary)

z - Interconnected Star (secondary)

– - Low Voltage lagging High Voltage

+ - Low Voltage leading High Voltage


*Interconnected Star is another name for a special zigzag connection of a wye transformer set-up that is used to provide grounding for a low tension side delta-connected power transformer.  It is also can serve as an auxiliary transformer to provide a substation with its own power.

Additional markings exist which you may find on a Dyn11 transformer or any other three phase transformer, and you may need to consult our experts at TEMCo to sort these out.  The main thing to realize is that there ARE such markings where appropriate. These are very useful when deciding which configuration the existing transformer will connect to successfully, or which transformer must be purchased in order to be compatible with the existing system.  They will also help in knowing which taps to wire to which lines.

Highest Quality TEMCo Transformers

Call TEMCo with your specific needs. TEMCo’s technical sales department has many years of applications experience providing design and engineering assistance for all types of Dyn11 transformer installations.

Call Our Dyn11  Transformer Specialists Today!

 *Custom Dyn11 Transformer Voltage Combinations Available*

Contact our team at TEMCo Transformer at 510-490-2187 to get your quote, place your order and arrange for shipping.


Dyn11 Transformer

Dyn11 Transformers

Dyn11 Liquid Filled Transformer
Dyn11 Transformer

Dyn11 Dry Transformer
We Supply A Wide Variety of High Quality Dyn11  Transformer Models

TEMCo Transformer Manufacturer Distribution: The Custom Dyn11 Transformer Manufacturer Supplier of Choice for Electricians and Manufacturers.

Worldwide Power Transformers Manufacturer

Quick Nationwide and International Shipping from Regional Warehouses

TEMCo Transformer Manufacturer Distribution: High Quality, Efficient, Fast Turnaround of Custom Dyn11 Transformers Manufactured to your Specs!

Call for Dyn11 transformer information.  Dyn11 transformers
manufactured for sale throughout the U.S. and Internationally.


Quality Companies Choose TEMCo Transformer - TEMCo's Customers Include:


TEMCo has experience manufacturing electrical products since 1968. TEMCo is a transformer manufacturer supplier you can trust - a member of the Better Business Bureau. We use the latest proven technology to spec manufacture high quality industrial grade transformers and other electrical products. All our products are built to last using the highest quality standards using only the highest quality supplies. As a result, TEMCo electrical products have a long operational life, lasting many years under proper use. All models are backed by our quality warranty, offering heavy duty quality at a great price.

TEMCo is an Accredited Member of the Better Business Bureau.  Offering Stock and Custom Transformers.TEMCo is a Stock and Custom Transformer Manufacturer You Can Trust - a Member of The Better Business Bureau.

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2. We Accept Visa, Discover
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3. We'll ship your order to
you asap.

Order your transformer, three phase converter, motor, or generator with VISA, Master Card, American Express, etc., Today!

We will ship it to you asap! or We will ship your transformer, power generator or motor asap!

We also accept Wire Transfer, Money Orders, etc.

And by other professional trucking companies.

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TEMCo US + International Phone #: 1-510-490-2187
TEMCo US Only Phone #: 1-800-613-2290

TEMCo Transformer Manufacturer Distribution is currently looking for new resellers.
If you are a qualified reseller, call for a TEMCo Transformer reseller application.

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Here are a few other brands of quality transformers that we also carry:
Acme Transformers K-Rated Transformers Three Phase Transformers Distribution Transformers GE Transformers Pad-Mounted Transformers Step Up Transformers Step Down Transformers Buck Boost Transformers High Voltage Transformers Isolation Transformer Electrical Transformer Single Phase Transformer Three Phase Transformer Hammond Transformers Single Phase Transformers Three Phase Transformers Isolation Transformers Buck Boost Transformers

Other Quality Products: Diesel Generator Diesel Power Generators Diesel Generator Sets Power Generators Onan Diesel Generators Variable Frequency Drive Soft Start Drives Motor Control PTO Generator Mobile Light Tower Standby Generator

Power Transformer • GPU Power • Harmonic Cancellation • Automatic Voltage Regulator • DC Power Supply • PDU • Rack PDU • Power Conditioner • Power Line Conditioner • Load Center • Switchgear • Voltage Converter • Combination Starter • Motor Starter • Disconnect Switch • Magnetic Starter • Oil Filled Transformer • Voltage Regulation • 400Hz  • 50Hz  • 60Hz • Aircraft Power Unit • Energy Storage Capacitor • Regulator • Power Supply • Surge Protector • Uninterruptible Power Supply • Power Regulator • Switching Power Supply • Regulated Power Supply • Voltage Stabilizer • Switching Regulator • Shunt Reactor • Recloser • UPS • Convertidores de Fase • Variable Frequency Drive • 3 Phase • Step Up Transformer • Control Transformer • Pad Transformer • Pole Transformer • High Voltage Transformer • Leeson Motor • Weg Motor • Baldor Motor • Toroidal Transformer • Generator Head Sets • Distribution Transformer • Baldor Generator • Pulse Transformer • Winco Generators • Dry Type Transformer • Motor Servo  • Motor Controller  • Pulse VFD  • Phase Shifting Transformer  • Variable Speed Drive  • Circuit Breaker  • PTO Generators  • Power Generator  • Electric Motor  • Onan Diesel Generator

Power Transformer  • Motor Control  • Isolation Transformer  • Step Down Transformer  • Three Phase Transformer  • Voltage Transformer  • New Voltage Transformers  • AC Transformers  • Output Transformer  • Custom Transformer  • Variac Transformer  • Variacs  • Voltage Regulator  • Circuit Breaker Panel  • Rectifier  • Electric Motor  • Power Generator  • Motor Generator  • Ship Port Electrical Power  • Cold Ironing  • Aircraft Ground Power Unit  • GPU  • Ground Power Unit  • Line Conditioner  • Industrial Generator  • Small Generator  • Home Generator  • Transfer Switch  • Generator Transfer Switch  • Natural Gas Generator  • Inverter Generator  • Propane Generator  • Wind Generator  • 3 Phase Generator  • Phase Converter  • Portable Generators  •
Portable Generator  • Standby Generators  • Power Generators Dir  • Electric Generator  • Mobile Light Towers  • Diesel Generator Set  • Diesel Generator  • PTO Generator  • Motor Control  • VFD  • Power Converter

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