EVALUASI KELAYAKAN OPERASIONAL TRANSFORMATOR KERING KAPASITAS 3500 KVA DAN 4000 KVA BERDASARKAN DEVIASI DI PASAR JAYA TANAH ABANG BLOK B
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
NANDA PERMATA GANDI, REYKHAN
Soewono, Soetjipto
Soewono, Soetjipto
Subject
Teknik Elektro
Datestamp
2022-10-31 08:18:02
Abstract :
With the development of human needs, the need for automatic electrical energy also increases. To overcome this, a transformer is used to adjust the required voltage. A tap changer is needed to meet the quality of the mains voltage to serve the needs of electrical energy. This study uses a three-phase dry transformer with a capacity of 3500 kVA 20 kV / 400 V and 4000 kVA 20 kV / 400 V. The method used in this study is a qualitative descriptive method to collect the necessary data. The purpose of this study is to determine the operational feasibility of a dry transformer based on the calculation of the deviation whose tolerance limit refers to the IEEE C57.12.01 standard of ±0.5%. The results of the transformation ratio obtained in the condition of the largest input voltage at the 3500 kVA transformer is 49.94 and the 4000 kVA transformer is 49.95. From the results of the measurement turn ratio calculation in the condition of the largest input voltage at the 3500 kVA transformer, which is 86.50 and the 4000 kVA transformer is 86.52, then the deviation is calculated on the two transformers when the highest input voltage is obtained at the 3500 kVA transformer which is -0.04 % and the 4000 kVA transformer is -0.05% so that based on the IEEE C57.12.01 standard it is said to be feasible to operate because the value is ±0.5%.
With the development of human needs, the need for automatic electrical energy also increases. To overcome this, a transformer is used to adjust the required voltage. A tap changer is needed to meet the quality of the mains voltage to serve the needs of electrical energy. This study uses a three-phase dry transformer with a capacity of 3500 kVA 20 kV / 400 V and 4000 kVA 20 kV / 400 V. The method used in this study is a qualitative descriptive method to collect the necessary data. The purpose of this study is to determine the operational feasibility of a dry transformer based on the calculation of the deviation whose tolerance limit refers to the IEEE C57.12.01 standard of ±0.5%. The results of the transformation ratio obtained in the condition of the largest input voltage at the 3500 kVA transformer is 49.94 and the 4000 kVA transformer is 49.95. From the results of the measurement turn ratio calculation in the condition of the largest input voltage at the 3500 kVA transformer, which is 86.50 and the 4000 kVA transformer is 86.52, then the deviation is calculated on the two transformers when the highest input voltage is obtained at the 3500 kVA transformer which is -0.04 % and the 4000 kVA transformer is -0.05% so that based on the IEEE C57.12.01 standard it is said to be feasible to operate because the value is ±0.5%.
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