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All Journal INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) JEECS (Journal of Electrical Engineering and Computer Sciences)
Dewi Cahya Febrina
Universitas Bhayangkara Surabaya
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Feasibility Test of Transformer Insulating Oil Lifetime Based on Breakdown Voltage (bdv) and Furan Analysis Dewi Cahya Febrina
JEECS (Journal of Electrical Engineering and Computer Sciences) Vol. 7 No. 1 (2022): JEECS (Journal of Electrical Engineering and Computer Sciences)
Publisher : Fakultas Teknik Universitas Bhayangkara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (355.134 KB) | DOI: 10.54732/jeecs.v7i1.212

Abstract

Optimization of transformer performance in distributing electrical energy is determining by transformer insulating oilquality. Insulating oil temperature increases with the great of transformer workload released during the distributionof electric power to consumers. Then, it will be affected to the breakdown voltage (BDV) value and oil quality whichcan even lead to the insulating oil failure. This research is carried out by taking a sampling of new deck oil and usedoil at different temperatures. Then insulating oil is tested by using BDV test and Dissolved Gas Analysis (DGA) todetermining furan value and workability of insulating oil lifetime. Thus, this research expected to identify the feasibilityof transformer insulating oil lifetime based on breakdown voltage and furan value.
Prototype of Automatic Tobacco Chopper Using PLC Omron CPM1-A Type Dewi Cahya Febrina
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 6 No. 1 (2023)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v6n1.p13-18

Abstract

Tobacco is the main raw material used to make cigarettes. Increasing of cigarette sales which have continued until now has led to an increasing of tobacco produced by tobacco farmers. Region of East Java has the largest percentage of tobacco producers and most of the peoples that work as tobacco farmers. Some of them still carried out the chopping process manually, thus requires more energy and longer time. This research is carried out by chopping tobacco leaves that have been dried and stacked with a thickness of 4mm. The procedure is carried out by pressing the start button, then conveyor moves to bring the container to the chopper. The container which attached to the magnet will be stop and detected by the reed switch sensor. The conveyor rotation is controlled by a DC motor gearbox and the operation of the chopper blades is controlled by a power window motor. All the chopping process is controlled using PLC
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