Previous in Forum: Transformer Dimensions   Next in Forum: Motor Faults
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
5 comments
Rate this Comments: Nested
Anonymous Poster

Stepdown Transformer 33 KV/0.433KV

12/16/2009 4:32 AM

What are the merits and demerits of stpping down directly 33/0.433kv instead of stepping down to 11kv & then 0.433kv?
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Shahrukh
Participant

Join Date: Dec 2009
Location: india
Posts: 3
#1

Re: step down transformer 33 KV/0.433KV

12/16/2009 4:55 AM

cost of intermidiate transformer will get reduced i.e 33kv/11kv.
Reply
2
anand.mandarapu
Associate

Join Date: Nov 2009
Posts: 39
Good Answers: 4
#2

Re: step down transformer 33 KV/0.433KV

12/16/2009 6:59 AM

The benifits are

1. Cost benifit of single transformer instead of 2 transformers

2. Saving in switch gear, cable, 1 switch gear cost will be saved

3. Protection relays cost of 1 set will be saved

4. Less copper losses

5. Improved reliability
Reply Good Answer (Score 2)
No more Good Answers.
neweng_26
Participant

Join Date: Jul 2009
Posts: 3
#3

Re: step down transformer 33 KV/0.433KV

12/16/2009 8:27 AM

good question
Reply
Anonymous Poster
#4

Re: Stepdown Transformer 33 KV/0.433KV

12/16/2009 11:49 PM

Merits have been already known to you

but the demerits are

1.In case of transformer breakdown total power source will be interrupted,

but if you use the intermiddiate transformation then you have the oppertunity

to increase reliability.

2.Harmonics will definitely increase

.
Reply
anand.mandarapu
Associate

Join Date: Nov 2009
Posts: 39
Good Answers: 4
#5
In reply to #4

Re: Stepdown Transformer 33 KV/0.433KV

12/17/2009 8:03 AM

In Single transformer i.e 33/.433KV Transformer, The harmonic effect will be less, Inrush currents also will be less compared to the multiple transformer
Reply
Reply to Forum Thread 5 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Copy to Clipboard

Users who posted comments:

anand.mandarapu (2); Anonymous Poster (1); neweng_26 (1); Shahrukh (1)

Previous in Forum: Transformer Dimensions   Next in Forum: Motor Faults

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 (65 right now)
Show Members
Advertisement