Zidani, Kelvin Ahmad (2025) Rancang Bangun Simulator Automatic Transfer Switch (ATS) dan Manual Transfer Switch (MTS) dengan Sistem Transisi antar Supply Daya pada Pengujian Panel Low Voltage Sivacon S8. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT Siemens Indonesia adalah perusahaan manufaktur panel listrik tegangan rendah dan menengah, dimana proses Factory Acceptance Test (FAT) pada divisi Quality Control (QC) berperan penting untuk memastikan sistem Automatic Transfer Switch / Manual Transfer Switch (ATS/MTS) berfungsi saat terjadi gangguan sumber tegangan. Pengujian saat ini mempunyai beberapa kendala yaitu keterbatasan alat CMC Omicron 356, tidak adanya pemantauan secara realtime, serta sistem wiring manual yang kurang aman dan belum efisien. Solusi dari permasalahan ini adalah merancang simulator ATS/MTS menggunakan PLC SIMATIC S7-1500 dan HMI, yang mampu menginjeksikan tegangan tiga fasa ke dua konfigurasi panel (2 incoming 1 bustie dan 2 incoming tanpa bustie) hanya dengan satu CMC. Pengujian dilakukan dengan metode injeksi tegangan ke terminal busbar yang terhubung dengan VT dan melakukan simulasi blackout melalui HMI, lalu sistem merespons otomatis atau manual sesuai logika ladder diagram di PLC. Hasil pengujian menunjukkan bahwa sistem ATS/MTS mampu berfungsi sesuai truthtable pada setiap kondisi gangguan sumber tegangan, baik dalam mode otomatis maupun manual. Verifikasi menggunakan truthtable menunjukkan kesesuaian 100% antara logika program dan hasil aktual. Hasil injeksi input tegangan (phase to phase) 400VAC dan (phase to neutral) 230 VAC sesuai dengan output tegangan pada panel uji. Pengujian performa menunjukkan efisiensi waktu pengujian meningkat hingga 50%, dari 2 jam menjadi 1 jam per line- up. Hasil uji skenario blackout dan restore berhasil dijalankan dengan tingkat keberhasilan 97%, waktu switching otomatis rata-rata ≤3 detik, dan switching manual <1 detik, tidak ditemukan eror logika, delay, atau anomali switching. Sementara itu, hasil feedback dari customer saat FAT menunjukkan tingkat kepuasan 98% terhadap keandalan sistem, tampilan antarmuka, dan keamanan penggunaan alat. Kesimpulan dari penelitian ini adalah bahwa simulator ATS/MTS yang dirancang berhasil memenuhi fungsi transisi daya dengan baik, meningkatkan efisiensi dan akurasi pengujian panel, serta layak digunakan sebagai alat bantu uji dalam FAT oleh Quality Control PT Siemens Indonesia
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PT Siemens Indonesia is a manufacturer of low and medium voltage electrical panels, where the Factory Acceptance Test (FAT) process in the Quality Control (QC) division plays an important role in ensuring that the Automatic Transfer Switch/Manual Transfer Switch (ATS/MTS) system functions during power Supply disruptions. The current testing process faces several challenges, including limitations of the CMC Omicron 356 device, lack of real-time monitoring, and an unsafe and inefficient manual wiring system. The solution to this problem is to design an ATS/MTS simulator using the SIMATIC S7-1500 PLC and HMI, which can inject three-phase voltage into two panel configurations (2 incoming with 1 bus tie and 2 incoming without bustie) using only one CMC. Testing was conducted by injecting voltage into the busbar terminals connected to the VT and simulating a blackout via the HMI, after which the system responded automatically or manually according to the ladder diagram logic in the PLC. Test results showed that the ATS/MTS system functioned in accordance with the truth table under all voltage source disturbance conditions, both in automatic and manual modes. Verification using the truth table showed 100% consistency between the program logic and actual results. The voltage input injection results (phase to phase) 400VAC and (phase to neutral) 230 VAC matched the voltage output on the test panel. Performance testing showed a 50% increase in testing efficiency, from 2 hours to 1 hour per lineup. Blackout and restore scenario tests were successfully executed with a 97% success rate, an average automatic switching time of ≤3 seconds, and manual switching <1 second, with no logic errors, delays, or switching anomalies detected. Meanwhile, customer feedback during the FAT indicated a 98% satisfaction rate regarding system reliability, interface display, and tool usage safety. The conclusion of this study is that the designed ATS/MTS simulator successfully fulfills power transition functions effectively, enhances testing efficiency and accuracy of the panel, and is suitable for use as a testing aid during FAT by Quality Control at PT Siemens Indonesia.
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