Article Per Year (5 Year)
p-Index From 2021 - 2026
2.488
P-Index
This Author published in this journals
All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Indonesian Journal of Electrical Engineering and Informatics (IJEEI) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Proceeding of the Electrical Engineering Computer Science and Informatics SINTECH (Science and Information Technology) Journal Indonesian Journal of Electrical Engineering and Computer Science SRIWIJAYA JOURNAL OF ENVIRONMENT International Conference on Sciences Development and Technology Journal of Multidisciplinary Academic and Practice Studies Scientific Contributions Oil and Gas
Zainuddin Nawawi
Universitas Sriwijaya
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

Published : 25 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 25 Documents
Search

 1   2   3 
Leakage and Flashover Current in the provided Silicon Rubber Coal Dust Pollution (Fly Ash) Maulana, Muhammad Bintang; Kurnia, Rizda Fitri; Fitria, Syarifa; Nawawi, Zainuddin
Sriwijaya Journal of Environment Vol 9, No 2 (2024): Waste Management
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2024.9.2.62-66

Abstract

This research study on leakage and flashover currents in silicone rubber treated with coal dust (fly ash) pollutants with variations in the duration of impurity conditioning within 1, 2, 3 days, and no conditioning. This research prepares for testing the RTV 497 silicone rubber test sample which is formed into a sheet with a thickness of 1 mm while the length and width are 50 x 25 mm which is attached with a leaf-like sample electrode system which is designed using the sketch up application with the number of samples of each 5 pieces each for each variation of conditioning carried out, then tested using an Aluminum Tape electrode system with a gap between the Aluminum Tape electrodes of 5 mm. To determine the value of the leakage current that passes through the surface of the Silicone Rubber, voltages of 220 V, 500 V, and 1000 V are applied, left for 1 minute for each voltage application variation to read the value of the current flowing on the sample surface, then the voltage is increased slowly until flashover occurs. The test results showed a leakage current value of 1, 2, and 3 days without conditioning when applying a voltage of 220 V is 34.53; 34.69; 34.81; and 35.09 mA, the same for application at a voltage of 500; and 1000 V that is the leakage current value increases. This is for any current flowing from the conductor to the ground to pass through the outer surface of the insulator. If the surface of the insulator has a layer of contaminants, it can affect the leakage current that flows on the surface. Meanwhile, the flashover test results with the same sample obtained a value of 4112.8; 3819.4; 3676.4; and 3511 V, the data obtained is that the voltage decreases with the longer the conditioning time is carried out since dust contaminants tend to settle and stick to the insulator, which is one of the biggest causes of flashover and failure. 
Designing A Compact 2×2 Dual-Band Mimo Microstrip Antenna for Wireless Monitoring Systems in Oil and Gas Facilities Aribowo, Didik; Nawawi, Zainuddin; Suprapto, Bhakti Yudho
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.1992

Abstract

Oil and gas facilities present challenging wireless communication environments due to complex metallic structures and severe multipath propagation, which can degrade the reliability of Industrial Internet of Things (IIoT)–based monitoring systems. To address this issue, this study proposes a compact dual-band 2×2 MIMO microstrip antenna operating at 2.6 GHz and 3.8 GHz for wireless monitoring applications in oil and gas facilities. The antenna is fabricated on a low-cost FR-4 substrate and employs a hexagonal patch geometry, miniaturized using a beveled half-cut technique to shorten the effective current path while maintaining good impedance matching. Furthermore, a multi-bridge ground structure is introduced to reduce mutual coupling between MIMO elements. Antenna performance is evaluated through simulations using Computer Simulation Technology (CST) by analyzing S-parameters, VSWR, gain, and radiation patterns. Simulation results show that the proposed antenna achieves reflection coefficients below −10 dB at both operating bands, inter-element isolation of up to ≤ −20 dB, VSWR values below 1.5, and a peak gain of 1.41 dBi. These results indicate that the proposed compact dual-band MIMO antenna is a promising candidate for reliable wireless monitoring systems in oil and gas facilities.
Clustering of swamp land types against soil resistivity and grounding resistance Dian Eka Putra; Muhammad Irfan Jambak; Zainuddin Nawawi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 23, No 3: June 2025
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v23i3.26647

Abstract

In theory, the resistivity value of the soil is one of the factors that must be taken into account when planning a grounding installation. The resistivity value of swamp soil is 30 Ωm, as per the general requirements for electrical installation of 2011 (PUIL 2011). This value is identical to the resistivity of the soil type in The Institute of Electrical and Electronics Engineers (IEEE standard 80 in 2000), where the wet soil type has a resistivity value of 100 Ωm. It is difficult for electrical engineers to design construction on swamp land because the standard's representation of the features of swamp land does not accurately reflect the types of swamps or wetlands that exist in reality. The focus of this investigation is the resistivity value of swamp soil types. The results of this investigation will make a scientific contribution to the clustering of land at each soil resistivity value in freshwater, brackish water, saltwater, and acidic water swamp land. These soils have pH values that range from 3.5 to above 6. The research on swamp land clustering has revealed that each swamp has a distinctive resistivity value for the different types of swamp soil.
The effectiveness of bentonite in reducing soil resistance in acidic water swampland Dian Eka Putra; Muhammad Irfan Jambak; Zainuddin Nawawi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 23, No 6: December 2025
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v23i6.27094

Abstract

This study aims to evaluate the effectiveness of bentonite mixtures in reducing grounding resistance in acidic swampy areas. The method used is an experiment comparing resistance before and after the addition of bentonite in various compositions (25%, 50%, 75%, and 100%), supplemented with linear regression analysis. The results showed that bentonite significantly reduced soil resistance in three types of electrodes: iron rebar, copper-coated iron, and galvanised iron. The highest reduction in resistance was achieved in iron rebar electrodes, from 35.93 Ω to 22.46 Ω (a 37% reduction) with the addition of 25% bentonite. Linear regression analysis showed a consistent negative relationship between the percentage of bentonite and grounding resistance, with a coefficient of determination (R²) varying between 26.40% and 73.39%. These findings indicate that bentonite is effective as a natural grounding material in acidic swampy areas. This research makes an important contribution to the development of more efficient and safer electrical systems in swampy areas and challenging environments, while also supporting the use of natural materials to reduce dependence on synthetic chemicals.
The use of dolomite to overcome grounding resistance in acidic swamp land Dian Eka Putra; Muhammad Irfan Jambak; Zainuddin Nawawi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 23, No 3: June 2025
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v23i3.26656

Abstract

This research addresses the effectiveness of grounding systems in acidic swampland, which poses a challenge in protecting people and electrical equipment from the risk of electric shock. The increasing use of swampland for electrical installations necessitates a solution to reduce the high grounding resistance resulting from poor soil resistivity values. This study proposes using dolomite as an admixture to improve soil conductivity and lower grounding resistance. Experimental methods were conducted by embedding rod electrodes of various materials in dolomite-mixed media with varying compositions. The results showed that adding dolomite significantly decreased the grounding resistance, although there were inconsistencies in the test results; on average, the decrease in resistance reached 25%. Galvanized electrodes proved to be the most effective in this system. These findings provide new insights in the field of grounding systems and offer practical solutions that are environmentally friendly and sustainable. This research is expected to be an important reference for developing more innovative and effective grounding system techniques in the future.
Co-Authors ., Aulia ., Aulia Abduk-Malek, Zulkurnain Abu Bakar Sidik, Muhammad Abu Bakar Sidik, Muhammad Abu Bakar Sidik, Muhammad Adzis, Zuraimy Adzis, Zuraimy Agus Adhi Nugroho Agustini, Meily P Ahmad, Hussein Arief, Yanuar Arifin Rusli, Mohd Qamarul Asiah Muhamad, Nor Aulia . Aulia . Aulia Aulia ‘Irfan Jambak, Muhammad ‘Irfan Jambak, Muhammad Bhakti Yudho Suprapto Bhakti Yudho Suprapto Buntat, Zolkafle Buntat, Zolkafle Bustanul Arifin Cekmas Cekdin, Cekmas D. R. Yuniarti Dian Eka Putra Didik Aribowo Eka Nuryanto Budi Susila Elnaz Akbari Ferlian Seftianto Fitria, Syarifa Hamizah Shahroom Hamizah Shahroom Hamizah Shahroom Hamizah Shahroom Hashem Ahmadi Hussein Ahmad Hussein Ahmad Ida Sriyanti Jaidan Jauhari Jambak, M. Irfan Jambak, Muhammad Irfan Jambak, Muhammad Irfan Lim Pai Hung Lim Pai Hung M. I. Jambak Mahmood, W. M. S. W. Maulana, Muhammad Bintang Meily P Agustini Mohd Qamarul Arifin Rusli Muhamad Haddin Muhammad Abu Bakar Sidik Muhammad Abu Bakar Sidik Muhammad Abu Bakar Sidik Muhammad Abu Bakar Sidik Muhammad Abu Bakar Sidik Muhammad Abu Bakar Sidik Muhammad Faizal Muhammad Irfan Jambak Muhammad Irfan Jambak Muhammad Khosyi'in Muhammad Khosyi'in Muhammad ‘Irfan Jambak Muhammad ‘Irfan Jambak Muhammad ‘Irfan Jambak Muhammadjavad Mobarra N. F. A. Isa Nor Asiah Muhamad Norain Sahari Pai Hung, Lim Putra, Dian Eka Putra, Dian Eka R. F. Kurnia Rizda Fitri Kurnia, Rizda Fitri S. M. Zafar Iqbal Shahroom, Hamizah Shahroom, Hamizah Shahroom, Hamizah Sidik, Muhammad Abu Bakar Sri Arttini Dwi Prasetyawati Sukemi Sukemi Syed Muhammad Zafar Iqbal W. M. S. W. Mahmood Yanuar Arief Yanuar Z. Arief Yanuar Zulardiansyah Arief Yanuar Zulardiansyah Arief Z. Arief, Yanuar Z. Buntat Zolkafle Buntat Zolkafle Buntat Zulardiansyah Arief, Yanuar Zulkifli Azman Zulkurnain Abduk-Malek Zuraimy Adzis Zuraimy Adzis