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All Journal INFOKUM Jurnal Rekayasa Elektro Sriwijaya Jurnal Nasional Teknologi Komputer
Muhammad Erpandi Dalimunthe
Universitas Pembangunan Panca Budi
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

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Analysis of Low Voltage Cable Insulation Resistance Test in PT. PLN (Persero) UPP Sumbagut 1 Building Khairul Fahredha; Muhammad Erpandi Dalimunthe; Dicky Lesmana
INFOKUM Vol. 13 No. 06 (2025): Infokum
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v13i06.2975

Abstract

Insulation resistance testing is an important part of electrical installation system maintenance to ensure system safety and reliability. This study aims to analyze the condition of low-voltage cable insulation in the PT. PLN (Persero) UPP Sumbagut 1 building through insulation resistance testing using a megger. Measurements were conducted at several distribution panel points by comparing the results with the 2011 PUIL standard. The test results showed a decrease in insulation quality at several points, especially in the generator panel area, which has the potential to cause disruption to the power distribution system. The decrease in insulation resistance can be influenced by various factors such as cable age, environmental humidity, and installation conditions. This study provides recommendations for preventive measures in the form of cable replacement at critical points and the implementation of periodic testing to maintain the performance of the electrical system. In addition, evaluation of installation design and environmental control is also needed to increase cable service life and overall system efficiency.
Design of a Detector System in Electrical Installations at Dize Photography Studio Alwi Riski; Muhammad Erpandi Dalimunthe; Zuraidah Tharo
INFOKUM Vol. 13 No. 06 (2025): Infokum
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v13i06.2984

Abstract

The stability of a three-phase power supply is crucial for ensuring the reliable operation of photography studio equipment, which is generally sensitive to electrical disturbances. One common disturbance is phase failure, which can cause equipment damage, reduced work quality, and safety risks. This study aims to analyze and implement a microcontroller-based phase failure detector system capable of detecting abnormal conditions in a photography studio's electrical system quickly and accurately. The system is designed using an ATmega328P microcontroller integrated with voltage sensors on each phase. When one of the phases fails, the system will provide a warning via a buzzer and LED indicator, and can optionally disconnect the load to prevent further damage. Test results show that this detector is capable of detecting the loss of a phase in less than 1 second with an accuracy level of XX% (adjusted based on the results). Thus, this system can improve protection for studio equipment and support more reliable operations.
Analisis Keandalan Sistem Proteksi Pada Distribusi Tenaga Listrik 20 KV Di PT Karya Wisesa Bernaldo Alonso; Muhammad Erpandi Dalimunthe; Haris Gunawan
Jurnal Nasional Teknologi Komputer Vol 6 No 3 (2026): Juli 2026
Publisher : CV. Hawari

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Abstract

The protection system is a crucial component in maintaining the reliability of the electric power distribution system, particularly the 20 kV medium-voltage network, which is vulnerable to various types of disturbances. This study aims to analyze the reliability of the protection system in the 20 kV electric power distribution network at PT Karya Wisesa through evaluation of Over Current Relay (OCR) and Ground Fault Relay (GFR) settings, short-circuit current analysis, and protection coordination. The research method involved system data collection, load calculations, fault current analysis, and relay coordination evaluation based on protection operation time and selectivity. The results showed that the protection system had a sensitivity of 21.44, a main relay operation time of 0.28 seconds, and a Reliability Index of 95%. After optimizing the relay settings, the grading time increased from 0.17 seconds to 0.35 seconds, thus meeting the IEC 60255 standard. These results indicate that PT Karya Wisesa's 20 kV distribution protection system has a good level of reliability in selectively detecting and isolating disturbances.
Analisis Kebutuhan Kapasitor Bank Pada MCC 200 Untuk Meningkatkan Faktor Daya Di PT. Ecogreen Oleochemicals Batam Niko Franceda Silalahi; Muhammad Erpandi Dalimunthe; Haris Gunawan
Jurnal Nasional Teknologi Komputer Vol 6 No 3 (2026): Juli 2026
Publisher : CV. Hawari

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Abstract

Power factor is a critical parameter in industrial power systems, affecting the efficiency of electrical energy use. A low power factor due to the dominance of inductive loads can lead to increased current, power losses, reduced voltage quality, and wasted distribution equipment capacity. This study aims to analyze the need for a capacitor bank in the Motor Control Center (MCC) 200 at PT. Ecogreen Oleochemicals Batam to improve the system's power factor. The research method involved measuring electrical parameters, analyzing reactive power, and calculating the capacitor bank requirement based on actual load conditions. The results showed that an initial power factor of 0.78 could be increased to 0.95 with the installation of a 150 kVAR capacitor bank. The implementation of the capacitor bank reduced the system current by 17.96% and reduced reactive power by 58.98%. The results demonstrate that the installation of a capacitor bank is effective in improving the efficiency of the power distribution system and supporting energy conservation in industrial environments.
ANALISIS STABILITAS FREKUENSI GENSET GEDUNG AKIBAT FLUKTUASI BEBAN Jendri Herman Sariadi Sigalingging; Muhammad Erpandi Dalimunthe; Adi Sastra Tarigan
Jurnal Nasional Teknologi Komputer Vol 6 No 3 (2026): Juli 2026
Publisher : CV. Hawari

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Abstract

Generators are backup power sources that play a crucial role in maintaining a building's continuous electricity supply during disruptions to the main grid. Frequency stability is one of the parameters determining the quality of generator operation. This study aims to analyze the effect of load fluctuations on the frequency stability of building generators using a power system simulation method. Load variations were conducted at 25%, 50%, 75%, and 100% of the generator's capacity. Observed parameters included system frequency, frequency deviation, and governor response to load changes. The results showed that increasing the load caused the generator frequency to decrease from 49.95 Hz to 49.50 Hz, while the frequency deviation increased from 0.05 Hz to 0.50 Hz. However, all frequency values remained within the permissible operating tolerance limits of 49.5–50.5 Hz. The results indicate that the governor is capable of maintaining frequency stability, allowing the generator to operate reliably under various load conditions.
Co-Authors Abendanon Siagian Adi Sastra Tarigan Alfonsus Sinamo Alwi Riski Beni Satria Bernaldo Alonso Bhima Andika Putra Deni Prabowo Dicky Lesmana Fakhrul Razi Anjas Hari Andiko Haris Gunawan Jendri Herman Sariadi Sigalingging Khairul Muhammad Faqih Fathurrahman NS Muhammad Rivai Muhammad Rizki Alfurqon Niko Franceda Silalahi Rahmaniar Rahmaniar Syahrobi Syahrobi Zulkarnain Zuraidah Tharo