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All Journal International Journal of Applied Power Engineering (IJAPE) Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal IPTEK JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) JURNAL ILMIAH PETERNAKAN TERPADU JEECAE (Journal of Electrical, Electronics, Control, and Automotive Engineering) J-ADIMAS (Jurnal Pengabdian kepada Masyarakat) Jurnal Energi dan Teknologi Manufaktur JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Abdi Laksana : Jurnal Pengabdian Kepada Masyarakat Jurnal Layanan Masyarakat (Journal of Public Service) Jurnal Geuthee International Journal of Science, Engineering and Information Technology JAREE (Journal on Advanced Research in Electrical Engineering) Jurnal Abdi Masyarakat Indonesia Jurnal Fortech SinarFe7 NUSANTARA: Jurnal Pengabdian Kepada Masyarakat Electron: Jurnal Ilmiah Teknik Elektro Jurnal Pengabdian Masyarakat Nusantara Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Journal of Railway Transportation and Technology Jurnal Pelayanan dan Pengabdian Masyarakat Indonesia Politeknosain Journal Geuthee of Engineering and Energy International Journal of Multidisciplinary Approach Research and Science Faedah: Jurnal Hasil Kegiatan Pengabdian Masyarakat Indonesia International Journal of Electrical Engineering, Mathematics and Computer Science Jurnal FORTECH KREATIF: Jurnal Pengabdian Masyarakat Nusantara Jurnal Pengabdian Masyarakat Indonesia Nucleus Journal
Yuli Prasetyo
Jurusan Teknik, Politeknik Negeri Madiun, Indonesia
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Journal : jurnal fortech

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Setting Relay Diferensial Siemens 7UT5121 pada Transformator dengan ETAP untuk Meningkatkan Sistem Proteksi Dimas Nur Prakoso; Yuli Prasetyo; Budi Triyono; Basuki Winarno
Jurnal FORTECH Vol. 7 No. 1 (2026): Jurnal FORTECH
Publisher : FORTEI (Forum Pendidikan Tinggi Teknik Elektro Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56795/fortech.v7i1.7102

Abstract

The development of the electric power system is quite rapid in Indonesia, where the development of the electric power system will not experience a decline and will continue to increase. To distribute electrical energy to consumers, transformers are the main component in the electrical system. During its operation, transformers often experience faults, making reliable protection and security systems necessary to maintain the smooth operation of the system. Protection systems are designed to interrupt faulty currents and protect equipment from damage caused by these currents. One of the primary protection devices for transformers is the differential relay, which operates quickly without requiring coordination with other relays. Differential relays work based on the vector difference between two or more electrical quantities exceeding a predetermined threshold. In this study, a Siemens 7UT5121 protection relay was used. To facilitate testing and fault analysis in the settings of this protection relay, simulations were conducted using ETAP software. The protection relay settings were configured to safeguard the transformer if there was a current difference between the CT on the primary and secondary sides within the protection zone. Based on calculations, the CT ratio for nominal current (I₁) was found to be 230.94 A, and the nominal current (I₂) was 1905.25 A. The CT secondary currents were calculated as 0.769 A for I₁ and 0.866 A for I₂. In the differential relay, the differential current was recorded at 0.097 A, while the restrain current was 0.817 A. The slope percentage analysis yielded values of 11.18% for slope 1 and 23.74% for slope 2. The differential current setting value obtained was 0.379 A. The relay will not operate if a fault occurs outside the protection zone, ensuring the reliability of the transformer protection system
Co-Authors Achmad Aminudin Ade Reza Ade Reza Febri Adittio Ramadhan Aditya PP Afifah Al Hayu Nugraheni Aggie Brenda Vernandez Agus Choirul Arifin Ahmad Afif Amrulloh Ahmad Rifky Kholil Akhsay Chandra Dewanta Akhwan Alfi Tranggono Agus Salim Amalia, Dwitya Solihati Andri Pradipta Anton, Muhammad Ardila Prihadyatama Arrizal Dwi Ramadhani Bachtera Indarto, Bachtera Basuki Winarno Basuki Winarno Basuki Winarno Basuki Winarno Basuki Winarno, Basuki Bi Asngali Budi Artono Budi Artono Budi Artono Budi Artono Budi Triyono Budi Triyono Budi Triyono Budi Triyono Dimas Fajar Uman Putra Dimas Nur Prakoso Dwi Lestariningtiyas Elmira, Bias Nur F, Yoga Ahdiat Faizalhaq, Zulfikar Fakhrudi, yoga ahdiat Farid majedi Firdaus, Aji Akbar Firillia Filliana Hanifah N. K. N. Hanifah N. Kumalaningrum Hanifah Nur Kumala Ningrum Hanifah Nur Kumala Ningrum Haryo, Raden Jasa Kusumo Hendrik Kusbandono Hidayatullah, Nur Asyik Hilman Naufal Rafi Ikhwan Baidlowi Sumafta imam basuki Indah Puspitasari Jasa Kusumo Haryo, R. Jasa Kusumo Haryo, Raden K. H, R. Jasa K., R. Jasa Ketut Tirtayasa Khakim, Ainul Kharirroh, Luluk Kumala Mahda H Kumala Mahda H Kumala Mahda Habsari Kusbandono, Hendrik Kusumo H, R. Jasa Kusumo Haryo, R. Jasa Madi Hartono Mahda Habsari, Kumala Mahdi Syukri Mochammad Najib Fathu Sobari Muaz Muhamad Hafidz Muhamad Fajar Subkhan Muhammad Aji Pangestu Muhammad Anton Muhammad Hasan Basri Muhammad Nur Cahyanto Muhammad Ruston Habibi Muhammad Syaeful Fajar N., Hanifah N. K. NANANG ROMANDONI Narava Kansha P Narava Kansha Putra P Narava Kansha Putra Pratama Ningrum, Hanifah Nur Kumala Noorsakti Wahyudi Nugroho , Satrio Nur Asyik H. Nur Kumala Ningrum, Hanifah Nur, Dimas Prakoso, Sandy R. Jasa K. R. Jasa K. H R. Jasa Kusumo R. Jasa Kusumo Haryo R. Oktav Yama R. Oktav Yama H R., Aldanur I. Raden Jasa Kusumo Haryo Raden Jasa Kusumo Haryo Raden Jasa Kusumo Haryo Rahma, Isnani Mila Rakhmad Gusta Putra Ramadhan, Ade Nofa Renna Melinda Ryan Wicaksono Ryan Wicaksono Sandy Prakoso Santi Triwijaya Santi Triwijaya Santi Triwijaya Satrio Nugroho Siswanto . Sulistiyanto Sulistiyanto, Sulistiyanto Sulistiyanto, Sulistiyanto Sulistyono Sulistyono Suluh Argo Pambudi, Suluh Argo Suprapto, Sena Sukmananda Surya Adi Paramadiwa Surya Akbar Pratama Teuku Multazam Titania Nur Cahyani Trisna Wati Trisna Wati Trisna Wati, Trisna Triwijaya, Santi Ubaidillah Ubaidillah Vicky Andria Kusuma Wahyu Pribadi Wangsa, Bhre Wicaksono, Ryan Wisnu Muchsin Yoga Ahdiat F