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All Journal Jurnal Ilmiah Poli Rekayasa Jurnal Teknik Elektro Jurnal Momentum Literasi: Jurnal Pengabdian Masyarakat dan Inovasi
Asrul, Junaidi
Politeknik Negeri Padang
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Mechanical Engineering Other

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Rancang Bangun Alat Monitoring Gas Metan Di Dalam Tambang Batu Bara Berbasis Android Asrul, Junaidi; Anwar, Salwin; Efendi, Efendi; Putra, Muhammad Darma
Jurnal Teknik Elektro Vol 7, No 1 (2018): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (902.586 KB)

Abstract

Gas metan murupakan gas yang bersifat lebih ringan di udara, mudah terbakar, tidak berbau dan tidak berwarna yang terdapat pada lapisan batu bara. Sehingga sering terjadi kecelakaan di tambang batu bara. Alat ukur  gas metan  hanya dapat mengukur keadaan kadar gas di dalam tambang batu bara dan tidak dapat dikirimkan ke luar tambang batu bara. Pada penelitian  ini dirancang sebuah alat yang dapat memonitoring kadar gas metan yang terdapat di dalam tambang batu bara. Pada sistem monitoring ini memanfaatkan sensor MQ-4 sebagai pendeteksi, bluetooth HC-05 sebagai pengirim ke luar tambang dan Arduino sebagai pengolah datanya. Pada alat monitoring juga menggunakan aplikasi android untuk mengirimkan kadar gas metan  ke penambang batu bara. Pada saat normal kadar gas metan di dalam tambang batu baradibawah 4% dan keadaan bahaya diatas 5%. Dari hasil penelitian ini, kadar gas metan yang terdapat pada tambang batu bara dikirimkan ke luar tambang. Dapat memperingati para penambang batu bara yang akan melakukan pekerjaan tambang.
Penentuan Resistivity Tanah Di Dalam Menetapkan Area Pemasangan Grounding Gardu Distribusi 20 Kv Mengunakan Kombinasi Grid dan Rod di Kampus Politeknik Negeri Padang Junaidi Asrul -; Wiwik Wiharti -; Efendi - -; Firmansyah - -
Jurnal Ilmiah Poli Rekayasa Vol 13, No 1 (2017)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (599.145 KB) | DOI: 10.30630/jipr.13.1.65

Abstract

To obtain a small earth (near zero) resistivity value is determined by the number of planted electrodes and soil type properties. Difficulty in obtaining this small resistivity value often errors in estimating soil properties or soil type resistance so that failure to obtain soil barriers often occurs.To determine the desired amount of material can be measured soil type resistor value, by measuring the soil resistivity value so that the estimated material cost estimation can be achieved well. then in this research using geoelectric method with Schlumberger configuration. Schlumberger method is a method with a constant system of spacing rules with the note of the 'n' multiplier is the comparison of the distance between the C1-P1 or (C2-P2) electrodes with P1-P2. The instrument used is a resistivity meter ( Naniura) equipped with four electrodes which have the ability to read output voltage response due to current injected into the ground surface through two current electrodes and two potential electrodes. In this study used progress to map the 2D isoresistivity beneath the measured surface. .The results of this soil resistivity measurement can be determined with certainty the amount of material used and the cost of workmanship provided to establish the proper grounding system to be attached to a 20 kV Distribution substation at the State Polytechnic Padang State Electricity Laboratory. So that the grounding system in pairs meet the standards that have been determined and can be categorized both and safe for humans and equipment for grounding Distribution Distributors 20 kV Electricity Engineering Laboratory at the State Polytechnic Campus Padang
Dampak Harmonisa yang ditimbulkan 0leh Beban Lampu Flourecent pada Instalasi Listrik Tri Artono -; Junaidi Asrul -; Efendi - -; Rahmi Berlianti -
Jurnal Ilmiah Poli Rekayasa Vol 13, No 1 (2017)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.26 KB) | DOI: 10.30630/jipr.13.1.66

Abstract

The problem of harmonics in electric power system can not be ignored, because with the increasing use of non-linear equipment (eg flouresent lamp), that flouresent lamp can cause harmonics in odd order of multiples of 3 that is equal to 15% , in this research two measurements are measured by using flouresent lamp load and incandescent lamp as comparison. The measurement used in this research is to use the harmonic power analysis instrument. From the result of measurement, it is found that in the experiments on 3 phase 4-wire system when the incandescent lamps are given each phase is balanced, the current in the neutral conductor is 0.08 Amper. While in the second experimental 3 phase 4-wire system when given 2x40 Watt flouresent lamp loads that each phase is balanced, then the current in the neutral conductor becomes excess that is equal to 0.26 Amper. The results of this measurement indicate that the harmonics caused by flouresent lamps are very worrying if the neutral cable carrier used on small-diameter electrical installation network, this could endanger the installation of fire.
Kontrol Motor Induksi 1 Fasa Menggunakan Raspberry Pi Junaidi Asrul; Yefriadi Yefriadi; Ismail Ismail; Efendi Muchtara; Miftahur Rizky; Vicky Hidayat
Jurnal Teknik Elektro Vol 9, No 1 (2020): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/JTE.2020.3133902

Abstract

Motor induksi paling banyak digunakan pada peralatan industri maupun pada peralatan rumah tangga, karena harganya relatif murah dan perawatannya juga lebih mudah, jika dibandingkan dengan jenis motor lainnya. Pada penelitian ini dilakukan suatu metoda penyalaan MOSFET (Switching MOSFET) menggunakan sebuah mini PC untuk mengontrol kecepatan dari motor induksi satu fasa. Mini PC merupakan suatu perangkat komputer dengan ukuran kecil yang memiliki sistem operasi tertentu. Salah satu perangkat mini PC adalah Raspberry Pi. Raspberry Pi memiliki fitur GPIO (general purpose input output) yang berfungsi sebagai port-port yang mengirimkan perintah sesuai instruksi atau program yang dibuat. Hasil pengujian menunjukkan mini PC sebagai pengontrol kecepatan motor induksi, dapat membuat berbagai variasi PWM (pulse width modulation) untuk penyalaan MOSFET, sehingga dapat diketahui performa dari motor induksi serta pengaruh kecepatannya terhadap variasi dari PWM yang diset pada Raspberry Pi.
REVIEW MOTODE-METODE REDUKSI PENGGUNAAN ENERGI LISTRIK PADA SISI PELANGGAN Rahmi Berlianti; Fitriadi Fitriadi; Junaidi Asrul
Jurnal Momentum ISSN 1693-752X Vol 19, No 2 (2017): Volume 19 No. 2 Agustus 2017
Publisher : ITP Press

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Abstract

Kebutuhan energi listrik tiap tahun terus mengalami peningkatan hal ini disebabkan oleh meningkatnya jumlah pelanggan listrik tiap tahunnya. Agar energi lisrik ini dapat dinikmati oleh semua pelanggan dan tidak menimbulkan krisis energi listrik maka, kedepannya pelanggan harus mereduksi penggunaan energi listrik. Jurnal  ini merupakan hasil review dari beberapa jurnal yang dibuat pada berbagai jurnal Internasional yang membahas beberapa metode-metode untuk merereduksi penggunaan energi listrik pada sisi pelanggan.Review dilakukan dengan mengelompokan pelanggan berdasarkan golongan tarif daya tersambung yang terdiri dari pelanggan sektor rumah tangga, pelanggan sektor bisnis, pelanggan sektor umum, pelanggan sektor industri.Metode-metode reduksi  yang sagat baik diterapkan di Indonesia adalah: Mengurangi pemakaian energi pada waktu beban puncak, mengatur jam oprasional penggunaan energi serta mengunakan peralatan hemat energi dan minimizing voltage unbalances Kata-kata kunci : metode reduksi, energi listrik, hemat energi, pelanggan
Pengembangan Materi Gambar Teknik Melalui Software AutoCAD Dalam Bentuk Pelatihan Bagi Guru-guru di SMK 5 Padang yefriadi yefriadi; Ismail Ismail; Junaidi Asrul; Rahmi Berlianti; Roza Susanti
Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Vol 3 No 1 (2023)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/literasi.v3i1.963

Abstract

Studying and understanding technological developments is also one of the teacher's obligations. Today , as a teacher, it is necessary to utilize media or applications to improve the quality of learning. The development of information technology and computers is now taking place very quickly. Almost all fields of work and activities around us are always associated with systems connected to information technology and the use of computers. So that mastery of computer applications is absolutely necessary for anyone who wants to complete a field of work or activity more easily and quickly. The field of Engineering expertise is currently experiencing very rapid development, especially in the field of product design and design optimization. In the industrial world, the design process for a product no longer uses conventional methods, but uses a computer facility through a design and optimization software which is commonly referred to as CAD (Computer Aided Design). Multinational manufacturing companies have applied this technology and one of them is the AutoCAD application which can facilitate the creation of technical drawing learning. Mastery of the AutoCAD software application is very important for vocational students, especially to welcome global competition that can be used for engineering drawing. The current problem faced by teachers is how to install and run the AutoCAD application. AutoCAD is application software that is widely used in the domestic and foreign industrial world, so learning this application will provide many benefits for teachers and students, especially at SMK 5 Padang.
Co-Authors Anwar, Salwin Firmansyah - - Fitriadi fitriadi Ismail Ismail Miftahur Rizky Muchtara, Efendi Putra, Muhammad Darma Rahmi Berlianti Roza Susanti Vicky Hidayat Wiwik Wiharti Yefriadi Yefriadi