Evaluation of Insulation Resistance Degradation in 555 WP Monocrystalline Solar Modules under Solar Irradiation Exposure
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Keywords
Insulation resistance, monocrystalline solar module, solar irradiation, IEC 61215, renewable energy reliability
Abstract
This study aims to analyze the insulation resistance value of a 555 WP monocrystalline solar module under the influence of solar irradiation through outdoor testing and insulation assessment. The primary focus is to understand the impact of solar exposure on insulation durability, a crucial factor in the long-term performance and safety of solar modules. The testing method follows the SNI/IEC 61215 standard, involving initial and final measurements using a calibrated insulation tester at the Energy Conversion Laboratory, BRIN. The results indicate a 19.54% degradation in insulation resistance after 15 days of solar exposure. Despite this decline, the module still meets the IEC 61215 criteria for insulation resistance, maintaining a resistance value above 40 MΩ for a module with a surface area of 2.583 m². A comparison of initial and final data reveals a decrease in resistance from 3.470 GΩ in the initial test to 2.792 GΩ in the final test. This reduction underscores the importance of paying closer attention to maintenance and routine testing to ensure the module's long-term reliability. This study provides new empirical evidence on the dynamics of short-term insulation degradation under tropical solar conditions, a topic that has been rarely quantified in field-based PV reliability research. In addition, this study makes significant contributions to the development of industry standards that aim to enhance the reliability of solar modules and manage renewable energy systems.
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[27] M. K. S. Al-Ghezi, B. K. Mahmoud, T. M. A. Alnasser, and M. T. Chaichan, “A comparative study of regression models and meteorological parameters to estimate the global solar radiation on a horizontal surface for baghdad city, iraq,” Int. J. Renew. Energy Dev., vol. 11, no. 1, pp. 71–81, 2022, doi: 10.14710/IJRED.2022.38493.
[28] T. H. Le et al., “Perovskite Solar Module: Promise and Challenges in Efficiency, Meta-Stability, and Operational Lifetime,” Adv. Electron. Mater., vol. 9, no. 10, 2023, doi: 10.1002/aelm.202300093.
[29] A. Eskandari, A. Nedaei, J. Milimonfared, and M. Aghaei, “A multilayer integrative approach for diagnosis, classification and severity detection of electrical faults in photovoltaic arrays,” Expert Syst. Appl., vol. 252, no. PA, p. 124111, 2024, doi: 10.1016/j.eswa.2024.124111.
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[31] A. M. Tobon, Y. Andres, and N. Locoge, “Impacts of test methods on the assessment of insulation materials’ resistance against moulds,” Build. Environ., vol. 179, no. May, p. 106963, 2020, doi: 10.1016/j.buildenv.2020.106963.
[32] M. Owen-Bellini et al., “Advancing reliability assessments of photovoltaic modules and materials using combined-accelerated stress testing,” Prog. Photovoltaics Res. Appl., vol. 29, no. 1, pp. 64–82, 2021, doi: 10.1002/pip.3342.
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[34] D. A. Quansah and M. S. Adaramola, “Ageing and degradation in solar photovoltaic modules installed in northern Ghana,” Sol. Energy, vol. 173, no. August, pp. 834–847, 2018, doi: 10.1016/j.solener.2018.08.021.
[35] S. Pozzer, Z. Omidi, A. El Refai, F. López, C. Ibarra-Castanedo, and X. Maldague, “Passive infrared thermography for subsurface delamination detection in concrete infrastructure: Capabilities,” Constr. Build. Mater., vol. 419, no. July 2023, p. 135542, 2024, doi: 10.1016/j.conbuildmat.2024.135542.
[36] A. M. Sinin et al., “Brightening the Future: Harnessing Nature’s Colours for Sustainable Solar Cells,” J. Adv. Res. Fluid Mech. Therm. Sci., vol. 127, no. 1, pp. 40–50, 2025, doi: 10.37934/arfmts.127.1.4050.
[37] A. Triyanto et al., “Study of Natural Herbal Dyes Photodegradation Effect to Optical Properties for Dye-Sensitized Solar Cells,” Sains Malaysiana, vol. 53, no. 10, pp. 3479–3485, 2024, doi: 10.17576/jsm-2024-5310-20.
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Dec 7, 2025
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How to Cite
Triyanto, A., Woro Agus Nurtiyanto, Sunardi, Elfirza Rosiana, & Syaiful Anam Pratama. (2025). Evaluation of Insulation Resistance Degradation in 555 WP Monocrystalline Solar Modules under Solar Irradiation Exposure. Jurnal Nasional Teknik Elektro, 14(3), 143–150. https://doi.org/10.25077/jnte.v14n3.1318.2025
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Electrical Power and Energy
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