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ANALISIS OVER CURRENT RELAY PADA TRANSFORMATOR PEMAKAIAN SENDIRI 20/6,3 Kv ; 40 MVA DI PLTU LONTAR 3 UNIT 1
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
SILABAN, YOSEP ERJUANDI
Budi S, Purnomo Willy
Subject
Teknik Elektro 
Datestamp
2019-10-28 09:16:56 
Abstract :
The electrical power system, especially the power plant, has a function to continuously fulfill electricity demand. To maintain the continuity of electrical power supply, a protection tool is needed. Unit auxiliary transformer is one of the important components of unit auxiliary installation in the electrical power plant centre. Unit auxiliary transformer operates as medium voltage feeder for the generation auxiliary tools after the plant unit is loaded, whereas the power is gained from the generator. To support the continuity of electrical power generation system, reliable protection is needed. Therefore, over current relay is needed even more to prevent more damages over the generation auxiliary tools that is caused by failures such as short circuit failure. Methods used in this thesis are literature review, interview and observation, as well as data collection and analysis. The calculation of over current relay setting is 3.971 A, while 5.09 A is the test result. 
Institution Info

Institut Teknologi Perusahaan Listrik Negara