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Pemeliharaan CT(Current Transformer) sebagai Konversi Arus pada Gardu Induk Rangkas Kota 70 KV Minhaz Tolibin; Mohammad Fatkhurrokhman
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 4 No. 1 (2025): JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v4i1.4871

Abstract

The Substation is a sub-system or a unit of the electric power distribution (transmission) system. Distribution (transmission) is a sub-system of the electric power system. This means that the substation is a sub-sub-system of the electric power system. Therefore, one of the most important equipment in the substation is the current transformer (CT) which is a very important equipment in the substation, where this device is used to convert a large current value into a smaller current value for measurement and protection purposes. The Current Transformer must be in good condition in order to be able to transform the current accurately and thoroughly. The research method carried out in the form of literature studies is to find and collect various references from books and journals as well as previous research related to the research title that the author took, in addition to that the author takes and collects related data needed in the form of CT maintenance data at PT. PLN (Persero) ULTG Rangkasbitung then analyzed all the data that had been collected. The measurement of isolation resistance is carried out at the beginning of the test intended to find out the isolation conditions of the current transformer at an early stage and to avoid subsequent test failures. The test results of the isolation resistance of primary-ground CT in phase R are 130000 MΩ, which means that the CT is still in good condition. Meanwhile, the delta tan test on CT with R phase is 0.17%, which means that the ct is also still in good condition.
Penggunaan Buzzer pada Modul GPS Teltonika FMB910 sebagai Indikator Kecepatan di PT Lacak Cipta Aktual Aldi Bragi Muslim; Mohammad Fatkhurrokhman
Jurnal Kendali Teknik dan Sains Vol. 4 No. 2 (2026): April: Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v4i2.6161

Abstract

The development of transportation technology encourages companies to improve vehicle monitoring systems to be more effective and measurable, particularly in addressing speeding violations that can increase accident risks and reduce operational efficiency. This study aims to analyze the implementation and effectiveness of using a buzzer integrated with the Teltonika FMB910 GPS module as a vehicle speed warning indicator at PT. Lacak Cipta Aktual. This research employs a qualitative descriptive method with a case study approach, where data were collected through observation, interviews, and documentation during a one-month industrial internship and analyzed using the Miles and Huberman model, including data reduction, data presentation, and conclusion drawing. The results show that the system is capable of detecting overspeed conditions and automatically activating the buzzer when the vehicle speed exceeds the predefined threshold of 80 km/h. Based on logbook data, the system achieved a success rate of 93.9% in responding to overspeed conditions. The use of a buzzer is proven effective in providing immediate warnings to drivers, thereby improving driver awareness and speed control. However, the system still has limitations, particularly its dependence on GPS signal stability and vehicle electrical conditions. Overall, this study demonstrates that the integration of GPS and a buzzer provides a simple, effective, and cost-efficient solution to enhance driving safety and fleet management efficiency.