Experimental Determination of Equivalent-Circuit Parameters for Transformers with Large Series-Branch Impedances

2006 ◽  
Vol 43 (4) ◽  
pp. 352-357 ◽  
Author(s):  
Saurabh Kumar Mukerji ◽  
Sandeep Kumar Goel ◽  
Kartik Prasad Basu
Keyword(s):  
Experimental Determination ◽  
Equivalent Circuit ◽  
Large Series ◽  
Equivalent Circuit Parameters

Augmented Short-Circuit Test for the Measurement of Transformer Equivalent-Circuit Parameters with Large Series Branch Impedances

2010 ◽  
Vol 47 (1) ◽  
pp. 86-93
Author(s):  
Saurabh Kumar Mukerji ◽  
Moleykutty George
Keyword(s):  
Equivalent Circuit ◽  
High Voltage ◽  
Single Phase ◽  
Short Circuit ◽  
Large Series ◽  
Test Results ◽  
Voltage Supply ◽  
Short Circuit Test ◽  
Equivalent Circuit Parameters

An augmented short-circuit test is described for the determination of equivalent-circuit parameters of single-phase transformers with large series-branch impedances. This test may be conducted at rated currents with the transformer connected to a reduced voltage supply. Thus harmonics in current and voltage waves are negligible. This test is therefore free from harmonics-associated errors. Based on test results, phasor equations are found which give formulae for the equivalent-circuit parameters with series-branch impedance split into low- and high-voltage components.

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