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Fakultas Agama Islam Dan Humaniora , Universitas Pembangunan Panca Budi Medan
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Model Arrester SiC Menggunakan Model Arrester ZnO IEEE WG 3.4.11 Halomoan Sinaga, Herman; Haryono, T.; , Tumiran
Jurnal Teknik Elektro Vol 5, No 1 (2005): MARET 2005
Publisher : Institute of Research and Community Outreach

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (83.122 KB) | DOI: 10.9744/jte.5.1.

Abstract

Arrester model is needed to analyse the insulation coordination in power system. The model should give a suitable respon for varying transient fault. In this paper, we conduct simulation that modified from IEEE WG 3.4.11 model. The model is modified by insert a switch that voltages dependent. Arrester modeling respons then compare to the laboratory testing result, with SiC 12 kV arrester sample. Testing conduct with time front varying from 1.2 to 29.7 s with magnitude 51 kV, 52.5 kV dan 54 kV. The difference between simulation and laboratory testing was 4.332 % for sparkovervoltage and 3.259 % for residual voltage discharge current Abstract in Bahasa Indonesia : Model arrester sangat dibutuhkan untuk menganalisis koordinasi isolasi dalam suatu sistem tenaga listrik. Model arrester yang dibuat harus memberikan tanggapan yang sesuai untuk semua kondisi gangguan transient. Dalam makalah ini dihasilkan simulasi dengan menggunakan model yang dimodifikasi dari model IEEE WG 3.4.11. Model ini dimodifikasi dengan menambahkan saklar yang dipengaruhi tegangan. Hasil yang didapatkan dari pemodelan kemudian akan dibandingkan dengan pengujian di laboratorium terhadap arrester SiC 12 kV. Pengujian dilakukan dengan surja tegangan dengan waktu muka 1.2 sampai 29.7 s dan puncak tegangan diberikan sebanyak 3 tingkatan, 51 kV, 52.5 kV dan 54 kV. Perbandingan hasil pengujian dan simulasi memberikan perbedaan sebesar 4.332 % untuk tegangan potong dan 3.259 % untuk tegangan residu arus pelepasan. Kata kunci: Model Arrester, Arrester SiC, Respons Transient.
Rancang Bangun Teknologi Automatic Surface Treatmen Untuk Meningkatkan Ketahanan Jalan Rel Kereta Api Wirawan, Willy Artha; Cundoko, Tumiran Anang; Wahjono, Hari Boedi; Rozaq, Fadli; ,, Sunardi
Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal) Vol 5 No 1 (2021): Jurnal Perkeretaapian Indonesia Volume 4 Nomor 1 Tahun 2021
Publisher : Politeknik Perkeretaapian Indonesia Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37367/jpi.v5i1.129

Abstract

The rail rod functions as a load that holds the weight of the train traveling on it. The large circuit weight can result in excessive friction and wear, requiring a hard, wear-resistant rail surface. The purpose of this research is to design a prototype tool which serves as an effort to increase the resistance on the rail road surface. The method used in the concept of this research is the flame hardening theory, namely heating the railroad using oxy-acetylene gas then quenching quickly to increase the hardness on the railroad surface. Prototyping begins with hardware design which includes Surface Treatment tools and designing automatic control program software. The results of the prototype were tested for the successful functioning of a tool that can be operated properly using manual mode with a maximum speed of 0.1 m/s and an automatic mode of 0.08 m/s.
Pemasangan Tiang Bendera Merah Putih Untuk Membangun Jiwa Nasionalisme Pada Pendidikan Anak Usia Dini ,, Sunardi; Cundoko, Tumiran Anang; Istiantara, Dedik Tri
JPMPPI (Jurnal Pengabdian Masyarakat) Vol 1 No 1 (2021): April 2021
Publisher : Politeknik Perkeretaapian Indonesia Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (983.659 KB) | DOI: 10.37367/jpm.v1i1.143

Abstract

Menanamkan jiwa nasionalisme merupakan hal yang paling penting dalam berbangsa dan bernegara. Pada kegiatan pengabdian masyarakat ini bertujuan untuk menanamkan jiwa nasionalisme pada anak usia dini dilakukan dengan membangun tiang bendera merah putih sebagai salah satu aspek kegiatan agar anak selalu menghormati dan menghargai perjuangan para pahlawan. Hasil yang diharapkan pada pelaksanaan kegiatan ini adalah para pesera didik maupun pendidik dapat terus meningkatkan rasa nasionalisme dengan dilaksanakanya kegiatan upacara bendera secara rutin
Sistem Keselamatan Bagi Awak Kendaraan Bermotor Angkutan Barang Terminal Sulistyo, Aris Budi; Cundoko, Tumiran Anang; Sasue, Riz Rifai O.; Ahmad, Rahmat; Suryasa, I Putu Adi; Dwipayana, Arif Devi
JPMPPI (Jurnal Pengabdian Masyarakat) Vol 1 No 2 (2021): November 2021
Publisher : Politeknik Perkeretaapian Indonesia Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (627.029 KB) | DOI: 10.37367/jpm.v1i2.188

Abstract

Di era sekarang ini, Pengabdian kepada masyarakat (PKM) merupakan hal yang sangat berguna untuk dapat membina maupun untuk meningkatkan kualitas keselamatan hidup masyarakat. Angkutan Barang merupakan denyut nadi perpindahan barang dengan moda angkutan mobil barang ke daerah tujuan pengiriman dengan aman dan lancar dengan tujuan untuk memeuhikebutuhan masyarakat, kondisi sekarang masih banyak terjadinya kecelakann lalu lintas yang masih di dominasi oleh angkutan barang berserta awaknya, kedepan nya perlu mendapatkan perhatian khusus demi tercipta transportasi yang aman dan nyaman di masa mendatang. Dengan begitu, melalui beberapa dosen dan taruna yang terlibat, Politeknik Transportasi Darat (Poltrada) Bali melakukan kegiatan pengabdian masyarakat di sekitaran Terminal Barang di daerah Denpasar dengan merujuk terhadap sistem keselamatan bagi awak kendaraan bermotor angkutan barang. Dengan adanya sosialisasi PKM ini, tujuan yang diharapkan adalah angkutan barang beserta awaknya dapat memberikan rasa aman nyaman selama berkendara mengantarkan barang dalam hal ini adalah logistik tersebut sampai ke tujuan dalam keadaan aman dan lancar, dengan penyuluhan ini diharapkan awak kendaraan megetahui sistem keselamatan yang meliputi tata cara megemudi, memahami karakteristik angkutan barang dan persyaratan teknis angkutan barang. Kegiatan ini dilaksanakan dengan menggunakan metode mediasi dan pendidikan masyarakat dengan penyuluhan yang bertujuan untuk meningkatkan pemahaman serta kesadaran akan penting sistem keselamatan angkutan barang. Dari metode tersebut diharapkan sistem keselamatan angkutan barang menjadi tewujud, dan nantinya berpengaruh terhadap angka kecelakaan lalu lintas dari sektor angkutan barang menjadi menurun dari waktu ke waktu, sesuai program RUNK dapat terwujudnya Zero Ancident dari faktor pengguna jalan yang berkeselamatan (safer people)
POTONGAN KOMERSIAL KARKAS AYAM BROILER STRAIN COBB YANG MENGALAMI PEMBATASAN PAKAN DAN PEMBERIAN SUMBER SERAT KASAR BERBEDA PADA PERIODE GROWER Tumiran, Megawati; Rompis, John E. G.; Mandey, Jet S.; Nangoy, Fredy J.; Londok, Jola J.M.R.
ZOOTEC Vol 39, No 1 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (223.192 KB) | DOI: 10.35792/zot.39.1.2019.23809

Abstract

Study was conducted to evaluate the effect of feed restriction and source of different crude fiber on carcass weight and commercial pieces of broiler with Cobb strain. Study was using 24 broilers with Cobb Strain. Restriction of 20 percent feed and different sources of crude fiber were applied to broilers at age of 21to 28 days old. Ration was fed ad libitum to broilers until birds reached age of42 days old. . This research was using a Completely Randomized Design (CRD) in Factorial pattern of 2x4 with 3 replications. As a factor A was restricted feeding consisted of without restrictions (A0), and 20 percents restricted ration (A1). A factor B was source of crude fiber consisted of commercial feed (B0), commercial feed with coffee hull meal (B1), commercial feed with rice bran (B2), and commercial feed with coconut pulp (B3). There were treatment combinations including A0B0, A0B1, A0B2, A0B3, A1B0, A1B1, A1B2 and A1B3. The variables measured were percentages of commercial pieces consist of breast, thigh, wing and brisket. The data analyzed used variance analysis. The honestly significance difference test was used to determine which one of treatment was significantly different from each other. The results showed that the combination treatment of feed restriction and source of crude fiber in feed gave a very significant different effect (P <0.05) on carcass weight of broiler with Cobb strain. Sources of fiber crude affected significantly (P<0.05) percentages of thigh, breast, brisket and live weight. Treatment of feed restriction affected significantly (P<0.05) percentage of wing. Restriction of 20 percents with coconut pulp as source of crude fiber produced better commercial carcass of broilers withCobb strain. Keywords: Feed restriction, crude fiber source, broiler commercial pieces, Cobb strain
Electrical Tracking Formation on Silane Epoxy Resin under Various Contaminants Abdul Syakur; Hamzah Berahim; Tumiran Tumiran; Rochmadi Rochmadi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 11, No 1: March 2013
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v11i1.878

Abstract

Contamination at the surface of the insulator becomes a serious problem. Especially for the tropical area, humidity and rainfall play an important role in wetness by the water at the insulator surface, which result in the presence of contaminant and leakage current flowing at the surface. This leakage current will generate heat which occurs at the surface of an insulator. This ultimately leads to flashover. This paper presents the influence of contaminants to leakage current and formation of electrical tracking at the surface of epoxy resin compound wit silicon rubber. The test was based on IPT method with NH4Cl as contaminants. The industrial and coastal contaminants are used to explain the effect of contaminant at surface tracking process. The flow rate of contaminant was 0.3 ml/min. The 3.5 kV AC high voltage 50 Hz was applied to the top electrodes. It is found that industrial contamination resulting in the smallest surface leakage current is 327.6 mA. Also it is found that coastal contaminant showed the severest damage at surface of test sample. Therefore, special treatment of the sample is needed under these conditions so that the material performance can be improved, especially against the electrical tracking.
The Damage of ZnO Arrester Block Due To Multiple Impulse Currents Tarcicius Haryono; K. Tunggul Sirait; Tumiran Tumiran; Hamzah Berahim
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 9, No 1: April 2011
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v9i1.685

Abstract

 A lightning arrester installed in an electrical power system is designed to protect some electrical equipment against damage due to lightning impulse strike. However, if  there is  a multiple impulse  current striking a lightning arrester, it may damage  the lightning arrester itself and then, as a result,  it cannot provide lightning protection to  the electrical equipment anymore. In this research, three peak values of lightning impulse current,which were  600, 1300, and 2500A, each of which had 5 repetitive impulse current, was  applied to a 5000A (1p.u.) ZnO block of a 24kV nominal voltage lightning arrester having seven ZnO block units. The results of research showed that by applying impulse current  of the order of 600(0.12), 1300(0.26), dan 2500(0.5) A(p.u.), making the ZnO block damage as much as 26.58, 50, and 100% concecutively. In addition, the damage of the ZnO block appeared as permanen low value of residual voltage as low as more than 5% of the new ZnO block residual voltage. If the ZnO block is still being used in a lightning arrester in electrical power system, it may result in the opening of a circuit breaker and possibly making electrical power outages from a number of electrical power customers.
Accelerated Aging Effect on Epoxy-polysiloxane-Rice Husk Ash Polymeric Insulator Material Tumiran Tumiran; Arif Jaya; Hamzah Berahim; Rochmadi Rochmadi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 10, No 4: December 2012
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v10i4.853

Abstract

The performances of outdoor polymeric insulators are influenced by environmental conditions. The use of polymeric materials in a particular composition can be produced insulators that are resistant to environmental influences. This paper presents the effect of artificial tropical climate on the hydrophobicity, equivalent salt deposit density (ESDD), surface leakage current, flashover voltage, and surface degradation on epoxy-polysiloxane polymeric insulator materials with rice husk ash (RHA). Test samples are made at room temperature vulcanized (RTV) of various composition of epoxy-polysiloxane with rice husk ash as filler. The aging was carried out in test chamber at temperature from 50oC to 62oC, relative humidity of 60% to 80%, and ultraviolet (UV) radiation 21.28 w/cm2 in daylight conditions for 96 hours. The experiment results showed that the flashover voltage fluctuates from 34.13 kV up to 40.92 kV and tends to decrease on each variation of material composition. The surface leakage current fluctuates and tends to increase. Test samples with higher filler content result greater hydrophobicity, smaller equivalent salt deposit density, and smaller critical leakage current, which caused the increase of the flashover voltage. Insulator material (RTVEP3) showed the best performance in tropical climate environment. Artificial tropical aging for short duration gives less effect to the surface degradation of epoxy-polysiloxane insulator material.
Power Oscillation Damping Control using Robust Coordinated Smart Devices Tumiran Tumiran; Cuk Supriyadi Ali Nandar; Sarjiya Sarjiya
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 9, No 1: April 2011
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v9i1.646

Abstract

The lack of damping of the electromechanical oscillation modes usually causes severe problems of low frequency oscillations in interconnected power systems. In the extreme operating conditions, PSS may fail to damp power oscillation. This paper presents a robust coordinated design of power system stabilizer (PSS) and thyristor controlled series capacitor (TCSC) to damp power oscillation in an interconnected power system. The inverse additive perturbation is applied to represent unstructured uncertainties in the power system such as variations of system parameters, system generating and loading conditions. In addition, genetic algorithm is employed to search a robust tuning to the controller parameters of both PSS and TCSC simultaneously. Simulation studies have been done in a single machine infinite bus system to confirm that the performance and robustness of the proposed controller are superior to that of the conventional controller.
MENINGKATKAN PRESTASI BELAJAR MELALUI MODEL PEMBELAJARAN CREATIVE PROBLEM SOLVING ( DALAM KAJIAN AQIDAH AKHLAK) Tumiran Tumiran
Jurnal Ilmiah Al-Hadi Vol 6 No 1 (2020): Volume 6 Nomor 1 Juli-Desember 2020
Publisher : Fakultas Agama Islam dan Humaniora, Universitas Pembangunan Panca Budi Medan

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

Abstract

Model Creative Problem Solving adalah suatu model pembelajaran yang melakukan pemusatan pada pembelajaran dan keterampilan pemecahan masalah, yang diikuti dengan penguatan ketrampilan. Model pembelajaran Creative Problem Solving siswa dapat berdiskusi kelompok, kerjasama, mandiri, memberikan ide-ide pemikiran tentang suatu konsep serta dapat mengaplikasikan melalui pembelajaran akidah akhlak yang dimana mereka lebih sopan santun, menjaga kebersihan, memberi salam, serta bertanggung jawab atas apa yang mereka lakukan baik itu di dalam kelas mau pun diluar kelas. Peningkatan prestasi belajar siswa berdampak lebih baik karena guru membuat system belajar siswa berkelompok kecil 4-5 orang perkelompok, dan guru menjelaskan prosedur solusi kreatif kepada peserta didik permasalahn, ilustrasi, problematis, dan tugas, pengumpulan data dan verifikasi mengenai suatu peristiwa dan siswa mencari informasi dan menjawab pertanyaan, peserta didik diberikan kesempatan untuk memberikan pendapat (brain storming), baik berdasarkan pengalaman dan pengetahuan peserta didik, membaca referensi, maupun mencari data/informasi dari lapangan.
Co-Authors ,, Sunardi Abdul Syakur Ahmad, Rahmat Arif Devi Dwipayana, Arif Devi Arif Jaya Aris Budi Sulistyo Asmidar Parapat Bahtiar Siregar Cuk Supriyadi Ali Nandar Doane Puri Mustika Eka Firmansyah F. J. Nangoy, F. J. Fransisco Danang Wijaya Fredy J. Nangoy Hamzah Berahim Hamzah Berahim Hamzah Berahim Hanung Adi Nugroho Herman Halomoan Sinaga I Made Purnama Ika Novia Istiantara, Dedik Tri J Mandey John E. G. Rompis Jola J.M.R. Londok K. Tunggul Sirait Kristianto Adi Widiatmoko Laihad, J. T. M. Baiquni M. Sofjan Mohd. Brado Frasetyo Mokhammad Isnaeni Bambang Setyonegoro Muhadjir Darwin Prapto Nugroho Rochmadi Rochmadi Rochmadi Rochmadi Rozaq, Fadli Rudy Hartanto Rustam Efendi Sarajar, C. L. K. Sarjiya - Sasongko Pramono Hadi Sasue, Riz Rifai O. Sofni Indah Arifah Lubis Sri Utami Gayatri Sukusen Soemarinda Surya Aji Ermanto Suryasa, I Putu Adi T. Haryono Tarcicius Haryono Tiyono Wahjono, Hari Boedi Wahyu Dewanto Wirawan, Willy Artha Yeremias T. Keban Yogi Sawitra