7 research outputs found
Otomatisasi Back Up Daya Listrik satu Fasa Berbasis Smart Relay
No full textABSTRAK Kata kunci: Otomatisasi, Diesel Generator Set, Smart Relay, Cadangan Daya Seringnya terjadi pemadaman listrik dari PLN menyebabkan kerugian di banyak bidang. Tidak bisa dipungkiri bahwa listrik merupakan kebutuhan pokok bagi sebagian besar masyarakat Indonesia. Untuk itulah didesain sebuah sistem yang berfungsi untuk proses otomatisasi diesel generator set sebagai sumber daya cadangan ketika terjadi kegagalan sumber daya utama dan otak kendali menggunakan smart relay. Tujuan dari pembuatan Tugas Akhir ini adalah : (1) merancang sebuah otomatisasi generator set berbasis smart relay, (2) mengetahui kinerja keseluruhan sistem otomatisasi starter diesel generator set yang dirancang. Metode perancangan meliputi : (1) perancangan pengaturan masukan tegangan dari PLN maupun diesel generator, (2) perancangan sistem kontrol (hardware), (3) perancangan program (software). Sistem kontrol ini bekerja mengatur proses starter diesel generator ketika terjadi pemadaman listrik dari PLN begitupun penonaktifan kembali diesel generator ketika sumber daya utama (PLN) kembali normal dengan beberapa standar keamanan jaringan listrik. Otak kendali dari sistem otomatisasi cadangan sumber daya menggunakan smart relay. Hasil dari analisis tersebut antara lain:(1) ketika terjadi pemadaman listrik dari sumber daya utama, maka smart relay akan memberikan perintah kepada kontaktor 24 VAC untuk menstarter diesel generator selama 3 detik, (2) ketika sumber daya utama aktif kembali, beban tidak disuplai selama kurang lebih 10 detik untuk mengetahui apakah sumber daya listrik utama benar-benar bisa diandalkan dan mengantisipasi adanya arus balik, beban dialihkan ke sumber daya listrik utama, sedangkan diesel generator tetap running tanpa beban untuk menormalkan temperatur kerja dari diesel generator. Dari hasil yang telah diperoleh maka dapat disimpulkan : (1) seluruh sistem otomatisasi diesel generator telah dirancang dengan standar keamanan, (2) alur kerja dari sistem otomatisasi menggunakan kendali smart relay dengan tambahan beberapa komponen elektromekanik.
Rancang Bangun Simulator Perbaikan Faktor Daya Listrik Sebagai Modul Praktikum di Laboratorium Elektronika Daya
Get PDFDalam penelitian ini, konsep perbaikan faktor daya diwujudkan dalam bentuk simulator. Simulator perbaikan faktor daya yang dibuat mampu menginjeksi arus kapasitif secara manual maupun otomatis. Penambahan arus kapasitif secara manual diatur oleh unit kontrol manual yang dikemudikan oleh toggle switch. Injeksi arus kapasitif secara otomatis dilakukan oleh mikrokontroler sebagai unit kontrol otomatis. Simulator ini juga dilengkapi dengan pemantau cosj sebelum dan sesudah perbaikan yang ditampilkan pada LCD. Simulator mampu membaca cosj sebelum dan sesudah treatmen dengan toleransi kesalahan masing-masing mencapai 0,01% dan 0,02% dari instrumen pembandingnya. Pada beban dengan jenis dan kapasitas yang beragam, besarnya daya nyata sebelum dan sesudah perbaikan selalu tetap. Perbaikan faktor daya pada level 0,85, besarnya daya reaktif dan daya semu setelah perbaikan akan berkurang. Sedangkan injeksi arus kapasitif atau injeksi daya reaktif lebih bersifat taklinie
Analisis Kemampuan Berfikir Kritis Siswa Sekolah Menengah Atas Pada Mata Pembelajaran Pendidikan Agama Islam
Get PDFIslamic education is not only about known about God or islamic concept, but student should be able to thinkfull with agument, analyse data, and think critically. Crytical think is need a procces to solve problem, analyse problem, sub problem and think carefully with all point of view. Student should be able to upgrade their critical think skills actualy to learn islamic education. The purpose of this study is analyze and describe ability critical think students to learn islamic education in senior high school Al-Azhar Medan. Subjects in this study were students of class XI Tahfidz Private High School Al-Azhar Medan academic of 2020-2021 with 120 students as subjects. This study uses a qualitative approach to describe students' critical thinking skills based from critical thinking indicators and based on the collected quantitative data. The author measures students' critical thinking skills by using tests and interviews. Result showed that student criical thinks ability are consisted of high critical thinker categories 35,9% critical thinker categories 46,6% quite critical thinker categories 11,6% and weak critical thinker categories 5,9%. Based on data SMA Swasta Al-Azhar Medan Student’s have been able to think critially in Islamic Education
SASTRA JAWA BALAI PUSTAKA 1917-1942
No full textThis book discusses the works of Javanese literature during the Balai Pustaka period 1917--1942. The approach used is macro and micro literary system as drafted by Ronald Tanaka. In this book, there are three main systems covering literary works, namely author system, publisher, and reader. Furthermore, around the literary work discussed the type, theme, language, and work of milestones
THE REUNIFICATION OF THE COUPLE IN CATHERINE SPENCER’S THE MILLIONAIRE’S MARRIAGE AS THE REPRESENTATION OF WORLD VIEW ON CLASS PROBLEM (RUJUKNYA SEPASANG SUAMI-ISTRI DALAM NOVEL THE MILLIONAIRE'S MARRIAGE CATHERINE SPENCER SEBAGAI REPRESENTASI PANDANGAN DUNIA DALAM PERMASALAHAN KELAS)
No full textThe Millionaire’s Marriage is novel written by Catherine Spencer from Canada. Max Logan and Gabriella Siklossy is a couple who separated during several years because there are some different characters, attitudes and backgrounds of various life aspects. To analyze this case, deductive method can be applied to research social conflict on author world view. Their meetings when Gabriella’s parents will visit to Max's residence was the effects of previous problem on their household relationship but this unplanned meeting results a reunification between two main characters which have different social status. The content of the story reflected two main characters which have different social status can be re-united through understanding each other and adjustment
PENDIDIKAN KARAKTER DALAM PERSPEKTIF TUAN GURU BESILAM LANGKAT (Studi Interpretative Phenomenologi Tarekat Naqsyabandiyah Babussalam)
Get PDFThis research discusses Character Education from the Perspective of Tuan Guru Besilam Langkat (Interpretive Phenomenological Study of the Naqsyabandiyah Babussalam Tarekat). The problems discussed in this research are seen from a very urgent phenomenon among society, namely character education. This research aims to find out what the views of Tuan Guru Belilam Langkat are and the wisdom implemented in the Naqsyabandiyah Babussalam Tarekat concept in implementing character education. Therefore, the author wants to conduct this research using a qualitative type of research with a Phenomenological study. The data obtained is based on observations, interviews and documentation studies. The analysis technique uses methods; data reduction, data presentation, conclusions. Then check the validity of the data by; credibility test, transferability test, defendability test, confirmability test
ANTOLOGI BIOGRAFI PENGARANG SASTRA JAWA MODERN
No full textThe Biography of the Author of Modern Javanese Literature is a tangible manifestation to fill a lump in the scarcity of Javanese literary books that have wide legibility. This book is written to complement the pre-existing book, the Summary of Modern Javanese Literary Developments (2001), both the pre-independence and independence periods. Meanwhile, Javanese literature is part of the overall literature in Indonesia that must be preserved because it is a national cultural asset. Many people believe that in Javanese literature there is local wisdom that can inspire national culture. In Javanese literature there are ethical, aesthetic, religious, solidarity, and the like, which are necessary and must be taken into account. Sometimes forgotten is that people only enjoy the literary works, but forget the author. Therefore, the presence of anthology biographical books is expected not only to create rapport or to reward authors, but also to be used to understand the history of modern Javanese literature. And in this book is a biography of 227 modern Javanese literary authors
