Transformers3

Transformers Three Phase

Centigrade Fahrenheit Square Inches Circular Mils Cost kwH Circular Mils
k Constant Voltage Drop 1 Phase Voltage Drop 3 Phase Voltage Drop Percent
Voltage Drop Multiple Legs Transformers 1 Phase Transformers 3 Phase AC Refrigeration 1 Phase
AC Refrigeration 3 Phase Conversion Home Electrician Math Home Electrician Education Home

Calculations involving three phase delta and wye transformers can be straight forward formula problems. The formulas represent definitions associated with these transformer types.

Here is a set of formulas you will see here and no where else. These formulas were developed to assist test takers to answer three phase transformer problems with no knowledge of any of the theory behind the formulas. All it takes to solve three phase transformer problems is substitution algebra skills.

Keep in mind that line values of the primary must be used with line values of the secondary.

Keep in mind that phase values of the primary must be used only with phase values of the secondary.

Find sample problems HERE. There are more pages of practice problems 85  86  87  88  89  90.

Find audio support HERE.

 
Many electrician workbooks and practice exams are now available 
as digital downloads for immediate use. 
Click HERE to see what is available.

Products For Sale
2006-2011 David U. Larson
dularson@bellsouth.net
Companion Website to ElectricianEducation.com ,
2011NEC.com and
TechnicianEducation.com
Other websites by David U. Larson which may be of interest:
VisitEuropeOnline.com

OldPostcardsForSale.com
StampDealerLots.com 
HouseFlipGuide.com
SwedenRoots.com
GreenfieldVillageOnline.com
6901st.org