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All Journal Journal of Electrical Power Control and Automation (JEPCA)
Saepullah, M Zaiz
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Electrical & Electronics Engineering

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Pemeliharaan Kubikel 20kV dan Keandalan Distribusi Listrik Pelanggan ULP Prima Krakatau Oktaviyanti, Ranisa; Anjani, Triska Adelia; Rifaldi, Maslili; Saepullah, M Zaiz; Aribowo, Didik
Journal of Electrical Power Control and Automation (JEPCA) Vol 7, No 2 (2024): Desember
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jepca.v7i2.116

Abstract

The 20 kV cubicle plays a vital role in the electrical distribution system, particularly in maintaining the reliability and stability of power supply for industrial customers. This study aims to evaluate the impact of routine maintenance on the performance of 20 kV cubicles at the Prima Krakatau Customer Service Unit (ULP). Maintenance is carried out periodically using time-based and condition-based approaches and includes measuring technical parameters such as grounding resistance, Current Transformer (CT), and Circuit Breaker (PMT). The results indicate that all components are operating optimally, with grounding resistance at 0.6 ohms and resistance values for CT and PMT exceeding 50 GΩ. The study concludes that scheduled cubicle maintenance contributes to improved power distribution reliability, reduced risk of system interruptions, and enhanced customer satisfaction.
Verifikasi Sensor Termokopel pada Furnace untuk Meningkatkan Akurasi Pemantauan Suhu di PT Krakatau Baja Konstruksi Saepullah, M Zaiz; Aribowo, Didik
Journal of Electrical Power Control and Automation (JEPCA) Vol 8, No 1 (2025): Juni
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jepca.v8i1.120

Abstract

Accurate temperature monitoring in the furnace is an important element in the processing of steel metals at PT Krakatau Baja Construction. Type S thermocouple sensors are used to measure temperature by converting temperature changes into voltage signals. However, to ensure the accuracy of the readings, thermocouple performance verification is carried out periodically. This research aims to verify thermocouples in several furnace zones to increase the accuracy of temperature data in the Human Machine Interface (HMI) system. The verification process uses the Fluke 17 B+ tool and Universal Transmitter PR4116. The measurement results are compared with the reference table and HMI readings before and after verification. The results show that all thermocouples function well with the largest deviation of 23°C in Zone 2A before adjustment and the smallest deviation of 1°C in Zone 1. Verification succeeded in reducing the deviation, ensuring the reliability of the measurement system. This research confirms the importance of thermocouple verification to improve production efficiency and product quality, with recommendations for regular evaluation of the HMI system and temperature measurements.
Co-Authors Anjani, Triska Adelia Didik Aribowo Oktaviyanti, Ranisa Rifaldi, Maslili