Transformer

Transformer Tests
BEST
BALIKES?R ELEKTROMEKAN?K SANAY? TES?SLER? A.?. Facility 1 : A??r Sanayi Bölgesi No 149 10040 Bal?kesir / Türkiye
Fax : + 90 266 241 52 36

Tel. : + 90 266 241 82 00

Facility 2

:

Organize Sanayi Bölgesi 198 adenosine deaminase 2 Parsel Bal?kesir / Türkiye
Fax : + 90 266 281 10 69

Tel. : + 90 266 281 10 70

www.besttrafo.com.tr best@besttransformer.com

Transformer Tests
Page : 1

Introduction :
The methods used during tests and measurements of the military unit Transformers, test and measurement circuits, calculations and evaluation criterias are included in this manual. At the end of this manual, BEST Bal?kesir Transformer Factory laboratory hardware and measurement and test equipments are listed. For insulation levels of transformers, electrical characteristics and evaluation, cheer refer to national and international standards and customer specifications. Tests and evaluation definitons are listed below:

Routine Tests :
Page 1. 2. 3. 4. 5. 6. 7. 8. 9.



bill of winding foeman meter of potentiality ratio and check of phase rendering mensuration of short-circuit impedance and load loss Measurement of no-load loss and current Dielectric tests Separate source AC withstand emf test Induced AC voltage test Partial-discharge measurement Tests on on-load tap-changers 2 4 7 10 12 14 15 18 21

figure Tests :
10. Temperature-rise test 11. Lightning-Impulse tests 22 26

Special Tests :
12. 13. 14. 15. 16. 17. Switching impulse voltage test Measurement of dissipation factor (tan ?) and capacitance Measurement of zero sequence impedance(s) Determination of sound level Measurement of harmonics of the no-load current Measurement of insulation resistance 30 32 34 36 40 41 42

List of tests and standard equipment of the testing laboratory

Prepared by :

Haluk Odo?lu

June 2009 ( 3 th form )

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