All About Circuits Forum 3 phase conversion between delta and star
 Register Blogs FAQ Members List Today's Posts Search Today's Posts Mark Forums Read

 Notices Welcome to the All About Circuits forums.Our forum is a place where thousands of students, hobbyists and professionals from around the world share knowledge and ideas. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact contact us.

 Homework Help Stuck on a textbook question or coursework? Cramming for a test and need help understanding something? Post your questions and attempts here and let others help.

#1
05-14-2013, 05:05 PM
 jcb19 Junior Member Join Date: Feb 2013 Posts: 12
3 phase conversion between delta and star

When converting from a star load to a delta load, becuase the phase and line currents in star are the same thing, to convert to delta does the line current stay the same and to get the phase current do you divide by sqrt(3) and add 30°, Or does the phase current in star become the phase current is delta and do you then multiply by sqrt (3) and subtract 30°?
#2
05-15-2013, 10:28 PM
 WBahn Senior Member Join Date: Apr 2012 Location: Larkspur, Colorado Posts: 8,077 Blog Entries: 9

Draw a diagram of three wires coming in to a box and inside that box put a star load. Identidy the line and phase voltages and currents.

Then draw a diagram of three wires coming in to a box and inside that box put a delta load. Identidy the line and phase voltages and currents.

Now identify which things have to be the same in order for the outside world to not be able to distinquish between the two boxes.

Now determine the relationships between the things that do not have to be the same.

 Tags conversion, delta, phase, star

 Related Site Pages Section Title Worksheet Delta and Wye 3-phase circuits Textbook Tesla polyphase induction motors : Ac Motors Worksheet Polyphase power systems Worksheet AC power Textbook Three-phase Y and Delta configurations : Polyphase Ac Circuits Textbook Harmonics in polyphase power systems : Polyphase Ac Circuits Textbook Three-phase power systems : Polyphase Ac Circuits Textbook Series resistor-inductor circuits : Reactance And Impedance -- Inductive Textbook Rectifier circuits : Diodes And Rectifiers Textbook -Y and Y- conversions : Dc Network Analysis

 Similar Threads Thread Thread Starter Forum Replies Last Post jcb19 Homework Help 1 05-14-2013 05:53 AM kamikazi929 Homework Help 1 05-21-2007 05:31 PM straw Homework Help 10 05-15-2007 03:47 PM gogs_752 Physics 2 12-02-2004 05:44 AM gogs_752 Physics 0 11-15-2004 10:03 AM

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Electronics Forums     General Electronics Chat     The Projects Forum     Homework Help     Electronics Resources Software, Microcomputing, and Communications Forums     Programmer's Corner     Embedded Systems and Microcontrollers     Computing and Networks     Radio and Communications Circuits and Projects     The Completed Projects Collection Abstract Forums     Math     Physics     General Science All About Circuits Commmunity Forums     Off-Topic     The Flea Market     Feedback and Suggestions

All times are GMT. The time now is 08:48 AM.