Previous in Forum: Tan Delta Test for Transformer Winding?   Next in Forum: Using a Step Down Transformer as a Step Up Transformer
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
2 comments
Rate Comments: Nested
deltrafosa
Active Contributor

Join Date: Feb 2009
Posts: 12

The Right Voltage for Tan Delta Test

02/26/2009 11:44 PM

Hello.

would you please help me regarding the Tan Delta test, I want to know what is the right voltage to test the Dissipation factor in transformers with the following voltages actually I make my test with an ELTEL 500 INSTRUMENT with 500 vac output:

HV Side 13.8 kv LV side 480 volts.

HV Side 34.5 kv LV side 4.16 kv.

HV Side 4.16 kv LV side 208 volts

all the units are oil immersed.

thanks for you support. Mario
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
CoronaCameraMan
Power-User

Join Date: Sep 2007
Location: Sheboygan, WI USA
Posts: 372
Good Answers: 13
#1

Re: The Right Voltage for Tan Delta Test

02/28/2009 10:07 AM

The two tan-delta test sets (I know of) are built by Doble which is a relative reading, you can compare the reading to other units of the same construction tested by other Doble test sets and the Tettex Instruments (marketed in the US by Haffely last I knew) instrument which gives an absolute measurement.

The output voltage of the built-in power supply is typically adjustable to 12kVDC as I recall. The correct voltage and procedure for testing can be found on the IEEE website http://www.ieee.org/portal/site search for the type of device you want to test.

The Tettex Instruments unit can be used with an external power supply to test at different voltages as I recall, I do not know if the Doble can.

__________________
 "I believe we are masters of our lives - we hold all the cards and it is up to us to use them right." Vesna Vulova - survived 33,000ft fall
Register to Reply
deltrafosa
Active Contributor

Join Date: Feb 2009
Posts: 12
#2
In reply to #1

Re: The Right Voltage for Tan Delta Test

02/28/2009 9:39 PM

Thanks Coronacameraman.

I try to find something in IEEE.
Register to Reply
Register to Reply
Have a Different Question?
2 comments

Previous in Forum: Tan Delta Test for Transformer Winding?   Next in Forum: Using a Step Down Transformer as a Step Up Transformer

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 (66 right now)
Show Members
Advertisement