Previous in Forum: A Transformer at the Outgoing Feeder of a Generator/Alternator- to Stabilise   Next in Forum: Generator Question
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
3 comments
Rate Comments: Nested
Johnsly
Active Contributor
India - Member - Member working in Qatar

Join Date: Oct 2008
Location: Kottayam, Kerala, India. Now at Qatar
Posts: 10

Transformer Vector Group

09/22/2012 9:01 AM

How we can test the vector group of transformer. If the client wants to confirm that the vector group is Dyn11 as indicated in the transformer name plate, how it can be done?
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
nobodysomebody47
Power-User

Join Date: Nov 2011
Posts: 171
Good Answers: 1
#1

Re: Transformer Vector Group

09/22/2012 3:16 PM

check these

Transformer Vector Group

vector group of transformer
Register to Reply
dhayanandhan
Guru
Engineering Fields - Mechanical Engineering - New Member

Join Date: May 2008
Location: CHENNAI, TAMIL NADU, INDIA.
Posts: 1851
Good Answers: 65
#2

Re: Transformer Vector Group

09/23/2012 1:20 PM

Dear Mr. Johnsly,

In this CR4 Forum itself, plenty of postings made and you can search here in CR4 itself and get the details.

DHAYANANDHAN.S
Register to Reply
electricalexpert65
Guru

Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#3

Re: Transformer Vector Group

09/24/2012 10:16 AM

The following is the procedure for Vector Group Test of a Dyn11 trafo.

i) Bond terminals 1U & 2u with a 2.5 sq.mm Copper wire.

ii) Apply 3 phase 415V, 50 Hz. supply to terminals 1U-1V-1W

iii) Measure the voltages across the following:

1U-1V, 1U-2n, 1V-2n (Equation: 1U-1V = 1U-2n + 1V-2n)

1V-2v & 1V-2W (Equation: 1V-2v = 1V-2w)

1W-2v & 1W-2w (Equation: 1W-2v > 1W-2w)

With the measured voltages, confirm that the equations in the brackets are true. If so, the trafo is Dyn11.
Register to Reply
Register to Reply
Have a Different Question?
3 comments
Copy to Clipboard

Users who posted comments:

dhayanandhan (1); electricalexpert65 (1); nobodysomebody47 (1)

Previous in Forum: A Transformer at the Outgoing Feeder of a Generator/Alternator- to Stabilise   Next in Forum: Generator Question

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (95 right now)
Show Members
Advertisement