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Design and Fabrication of A 100 Wp Solar-Powered Point Indicator Signal for Railway Depot Maintenance Areas

Ach Muhib Zainuri, M. M. Rahul Arrahman, Pipit Wahyu Nugroho, Pondi Udianto4, Asrori Asrori

2026ensolar energyphotovoltaic systemrailway signallingdepot maintenanceoff-grid powerrenewable energy

Abstract

Language:

Conventional railway depot point indicator signals depend on grid electricity, resulting in ongoing costs and reliance on fossil-fuel-based power. This study proposes and implements a 100 Wp solar-powered, fully off-grid point indicator signal tailored for depot maintenance areas in Indonesia. The work covers load and energy calculations, solar resource measurement using an SPM-1116SD solar power meter, detailed mechanical design via CAD, and fabrication of a prototype comprising a 100 Wp monocrystalline panel, 12 V 200 Ah battery, charge controller, and LED signal array. Field testing at the Malang Locomotive Depot showed that the system reliably powered 6 W LED signals for 7 hours nightly while maintaining a low battery depth of discharge of 10.5%, supported by peak solar irradiance of 851.3 W/m². The total system cost was IDR 8,156,500, indicating favorable economic prospects. Overall, the results demonstrate the technical and financial feasibility of using standalone solar PV systems for critical signalling in railway depots, and provide a replicable design framework for similar applications.

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Cite This Work

@article{3d85ea11-3090-4029-84bb-1365162a79c7,
  title={Design and Fabrication of A 100 Wp Solar-Powered Point Indicator Signal  for Railway Depot Maintenance Areas },
  author={Ach Muhib Zainuri and M. M. Rahul Arrahman and Pipit Wahyu Nugroho and Pondi Udianto4 and Asrori Asrori},
  year={2026},
  language={en}
}
TY  - JOUR
TI  - Design and Fabrication of A 100 Wp Solar-Powered Point Indicator Signal  for Railway Depot Maintenance Areas 
AU  - Ach Muhib Zainuri
AU  - M. M. Rahul Arrahman
AU  - Pipit Wahyu Nugroho
AU  - Pondi Udianto4
AU  - Asrori Asrori
PY  - 2026
LA  - en
ER  -

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