The Effect of Coil Winding Replacement on the Performance of a 200 Kva Transformer (Case Study at PT. Razza Prima Trafo)
Abstract
The electric power system is a primary need, both for daily life and for industrial life. The provision of stable and continuous electric power is an absolute requirement that must be met in meeting the need for electric power. The distribution system is the distribution of electrical energy from the substation to consumers. There are 2 (two) distribution systems, namely primary distribution and secondary distribution. Primary distribution, the distribution starts from the substation (secondary side of the power transformer) to the distribution substation (primary side of the distribution transformer) or from the substation directly to the 20kV medium voltage consumer. Power transformers are equipped with a grounding transformer that functions to obtain a neutral point from the power transformer. Before replacing the coil winding, measurements were taken using a TTR transformer turn ratio test (megger) measuring instrument. It can be concluded that the location of the damage is in the coil winding section. The results of the voltage measurements on the Primary Winding between phases R-S = 410 V, ST phase = 407 V and TR phase = 375V. and the Secondary voltage between phase and Neutral is RN = 221V, SN = 237V and TN = 222V. and the current in the Secondary winding between phases is R = 7.64A, S phase = 7.64A and T phase = 8.08A.
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References
Mertasana, PA 2015. Efforts to Overcome Overload at 160 Kva Distribution Substation at Kelan Tuban Feeder. Research Report. Department of Electrical and Computer Engineering. Faculty of Engineering. Udayana University.
Prayoga, A., S. Marnatha, B., S. Marulitua, E., and Nahar, M. 2010. Transformer. Journal of Electrical Power Engineering. Faculty of Engineering. University of Indonesia. Depok
Syufrizal and Monantun, Readysal. 2014. Electric Power Distribution Network. Electrical Engineering Expertise Textbook Semester I. Ministry of Primary, Secondary Education and Culture of the Republic of Indonesia.
Tanjung, Abrar, and Atmam. 2016. Performance Analysis of Distribution Transformers at Lancang Kuning University Flats, Pekanbaru. Journal of Science, Technology, and Industry, Vol. 1, No. 1. Faculty of Engineering, Lancang Kuning University, Pekanbaru
Wahyudiyanto, DB 2009. Distribution Transformer Maintenance and kVA Transformer Data Management Program of PT PLN (Persero) APJ Bandung. Bandung: Faculty of Engineering and Computer Science, Indonesian Computer University
Za'im, M.Rif'at.2014. Analysis of 3-Phase 150Kv/20Kv Power Transformer at Ungaran Substation of PLN Semarang Distribution.Electricity Education Journal, Vol. 3, No. 2. Department of Electrical Engineering. Faculty of Engineering. Semarang State University.
Rahmaniar,r Analysis of over current relay (ocr) on 60 mva power transformer with matlab simulation at paya geli substation https://journal.pancabudi.ac.id/index.php/scenario/article/download/1193/1066/2413
Solly A and Z tharo 2025 Analysis Of Power Transformer Performance Reliability On The Effect Transient Recovery Voltage.http://seaninstitute.org/infor/index.php/pendidikan/article/view/2552
Haris G and D Lesmana 2025Analysis of Power Transformer Oil Insulation Capability Against Breakdown Voltage Due to Temperature and Loading
https://jurnal.umsu.ac.id/index.php/jcositte/article/view/23674
https://sinausetrum.blogspot.com/2015/06/cara-menggulung-trafo.html