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Ahmad Hermawan
Politeknik Negeri Malang
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PEMASANGAN INSTALASI DRIP SYTEM UNTUK EFISIENSI LAHAN GUNA MENDUKUNG URBAN FARMING PADA PT TANDURIA AGROMEDIA INDONESIA Galuh Prawestri Citra Handani; Afidah Zuroida; Hanifiyah Darna Fidya Amaral; Lukman Hakim; Rohmanita Duanaputri; Ahmad Hermawan
J-ABDI: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 7: Desember 2024
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jabdi.v4i7.8891

Abstract

Konsep urban farming merupakan konsep penanaman yang dilakukan di perkotaan dengan memanfaatkan lahan tanam yang terbatas. Salah satu UMKM di Kota Malang yang bergerak di bidang urban farming yaitu PT Tanduria Agromedia Indonesia, berdiri pada tahun 2021. PT Tanduria Agromedia Indonesia menerapkan konsep ini dengan objek tanaman yaitu tomat dan mentimun pada lahan seluas ± 100 m2. Sistem penyiraman masih dilakukan secara manual dengan ketergantungan pada manusia yang menyebabkan tidak meratanya irigasi setiap area penanaman. Selain itu, ketergantungan terhadap ketersediaan air Perumda Tugu Tirta juga mempengaruhi waktu penyiraman jika terjadi gangguan distribusi air. Upaya yang dapat dilakukan untuk membantu mitra yaitu dengan menerapkan sistem irigasi “drip system” agar proses penyiraman setiap tanaman dapat merata. Teknik penyiraman ini dapat meningkatkan produktivitas tanam dan efisiensi lahan tanam melalui pemasangan instalasi kelistrikan pompa air yang dapat mengatur debit air tandon maupun proses irigasi.
Comparison of Breakdown Voltage and Aging of Kraft Paper in Transformers Immersed in Mineral Oil, Natural Ester, and Synthetic Ester Hanifiyah Darna Fidya Amaral; Galuh Prawestri Citra Handani; Rahman Azis Prasojo; Reyhan Fadhlur Rahman; Satria Lutfi Hermawan; Ruwah Joto; Afidah Zuroida; Ahmad Hermawan; Irwan Heryanto/Eryk
ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK Vol. 15 No. 2 (2025): ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK (July-November 2025 Edition)
Publisher : Universitas Panca Marga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51747/energy.v15i2.15215

Abstract

Transformers are critical components in electrical power systems that rely on insulation oil and paper to ensure reliable and long-lasting operation. This study aims to compare the performance of kraft insulation paper immersed in three types of transformer oil, namely mineral oil, natural ester, and synthetic ester, through the accelerated thermal aging method. Evaluation was carried out based on tensile strength and water content testing in accordance with the IEEE C57.100-2011 standard, as well as breakdown voltage testing in accordance with the IEC 60156-2018 standard. Tests were conducted with samples taken at intervals of 24, 240, 480, and 720 hours at 150°C. The results showed that insulation paper soaked in mineral oil experienced a 34% decrease in tensile strength, while natural ester and synthetic ester oils showed tensile strengths of 66% and 52%, respectively. In the water content test, natural ester showed the best performance with the lowest water content (5.19%), followed by mineral oil (7.47%) and synthetic ester (46.70%). In the breakdown voltage test, natural ester had the highest breakdown voltage of 66.26 kV, followed by mineral oil at 63.96 kV and synthetic ester at 41.14 kV. Estimated insulation life based on lifetime regression showed that natural ester has a lifetime of up to 37.9 years, synthetic ester 25.6 years, and mineral oil 20.5 years. In addition, in transformers operating at 130°C, natural ester insulation oil can increase loading up to 20% higher than mineral oil and has a 15-20°C higher operating temperature. This study recommends the use of kraft insulation paper impregnated with natural ester and synthetic ester oils as an alternative to mineral oil, because both are superior environmentally friendly alternatives compared to mineral oil. Both oils have better mechanical strength and insulation, lower water content, and can slow down transformer aging. Furthermore, these ester oils are non-flammable, biodegradable, and reduce the risk of failure due to excessive heat or discharge, thereby increasing the reliability and lifespan of the transformer. With these properties, ester oils support safer and more sustainable operations for the power system.
IMPLEMENTASI SENSOR WATERFLOW BERBASIS INTERNET OF THINGS UNTUK PEMANTAUAN PEMAKAIAN AIR DI KAWASAN PERUMAHAN PERMATA BANDARA ASRIKATON, KABUPATEN MALANG Sigit Setya Wiwaha; Priya Surya Harijanto; Ahmad Hermawan; Lukman Hakim; Hanifiyah Darna Fidya Amaral
JURNAL PENGABDIAN MANDIRI Vol. 5 No. 8 (2026): Agustus 2026
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kegiatan pengabdian ini menjawab persoalan pemantauan pemakaian air secara manual di Perumahan Permata Bandara Asrikaton, Kabupaten Malang, yang selama ini bergantung pada satu petugas untuk mencatat sekitar 100 meter air setiap bulan sehingga rawan kesalahan baca dan lambat mendeteksi kebocoran. Solusi yang diterapkan adalah sistem sensor waterflow berbasis mikrokontroler ESP32 yang terintegrasi dengan aplikasi Blynk, sehingga data pemakaian air dapat dipantau warga secara real-time melalui telepon pintar. Pelaksanaan program mencakup identifikasi masalah, survei lapangan, perancangan dan pengujian prototipe, instalasi, pelatihan, hingga evaluasi. Hasil evaluasi menunjukkan efisiensi waktu kerja operator meningkat hingga 70%, biaya tenaga kerja dan operasional turun hingga 50%, serta volume kehilangan air (non-revenue water) berkurang 10-15%. Kegiatan ini membuktikan bahwa teknologi IoT berbiaya rendah dapat mendukung pengelolaan air permukiman yang lebih efisien, transparan, dan berkelanjutan.
Co-Authors Afidah Zuroida Afidah Zuroida Afriana Viro Fadilla Afriana Viro Fadilla Ahmad Koimam Alif fitrah Amaral, Hanifiyah Darna Fidya Ananto, Rhezal Agung Asfari Hariz Santoso Aulia Nur Rahma Budi Eko Prasetyo Candra Wiharya Chandra Wiharya Chandra Wiharya Fahmi Hakim, Muhammad FANDI KURNIAWAN Florentina Berlian Suryaningtyas Galih Hardika Sakti Habib Priyo Budianto Handani, Galuh Prawestri Citra Hanifiyah Darna Fidya Amaral Hanifiyah Darna Fidya Amaral Hilman Rangga Nugraha Hermawan Irwan Heryanto/Eryk Jamik Apriliasari Kalam Syamsul Arifin Kharis Nugroho Kumala Mahda Habsari Lukman Hakim Lukman Hakim Miftah Khilmi Hidayatullah Mohammad Noor Hidayat Mudjiono Mudjiono Muhamad Subhi Apriantoro Muhammad Aden Herry Prakoso Muhammad Aden Herry Prakoso Muhammad Azzam Wian Panantuan Muhammad Fahmi Hakim Muhammad Ilham Rifqi Nurhayati Nurhayati Popong Effendrik Priya Surya Harijanto Priya Surya Harijanto Priya Surya Harijanto Rachmat Sutjipto Rahman Azis Prasojo Reyhan Fadhlur Rahman Roby Tri Stya Hutama Rohmanita Duanaputri Rohmanu Dwi Kuncoro Ronilaya, Ferdian Rosina Ahda Dini Ruwah Joto Safira Azizah Sapto Wibowo Satria Lutfi Hermawan Satria Luthfi Hermawan Satria Luthfi Hermawan Shafira Irmadhani Hidayat Siffa Seftiana Sigit Setya Wiwaha Sugeng Harianto Wijaya Kusuma Yudistiro Yanuarianto Zahra Mulia Sari Zulvina Arifah