An inverter is an electronic device used to convert DC current into AC current. Inverters have various types according to the type of phase, control wave and generating capacity. Inverters play a very important role as the main supporting component in solar power plants, therefore selecting a good inverter is one of the main points in building this plant. In this plant there are 8 inverters whi…
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Penelitian ini dilakukan untuk mengetahui kemampuan multirepresentasi siswa pada topik Listrik Arus Searah. Penelitian ini melibatkan 119 orang siswa kelas XII IPA 4, XII IPA 5 dan XII IPA 6 SMA Negeri 11 Palembang tahun ajaran 2022/2023.. Pengambilan data dilaksanakan secara offline menggunakan Instrumen soal dari Physport dan digabung dengan buku bahan ajar fisika kelas XII. Instrumen soal be…
Buku ini memberikan jawaban terhadap masalah-masalah praktis dengan cara mudah dan menyenangkan. Anda akan melihat penggunaan kedua piranti itu untuk bermacam-macam pemakaian seperti instrumentasi, pembangkitan isyarat, filer, dan pengendalian.
Polymeric materials such as epoxy resin are widely used as insulating materials in electrical devices, but polymer epoxy resin materials are generally susceptible to environmental influences and exposure to electric fields. To improve the insulating deficiencies of epoxy resin polymers, additional particles can be added. The addition of excess particles can result in a decrease in the quality o…
This study was conducted to obtain dielectric characteristics in form of breakdown voltage and leakage current in Kraft Paper insulation impregnated in sesame oil with a variety of treatment times of 8; 16; and 24 hours. The samples used are square sheets of kraft paper measuring 25 mm x 25 mm and thickness of 0.04 mm. The breakdown voltage test was conducted using a needle-plene electrode syst…
This research discusses the results of a study regarding the effect of thermal aging time on the dielectrick strength of Rice Bran Oil which is given a mixture of the compound Benzyl Benzoate (BnBzO), with concentration variations of 5; 10; and 15 wt%. The samples were placed into a galvanized vessel and then subjected to thermal treatment using a mechanical oven with various treatment times (0…
This study report the effect of mechanical stress in the form of pulling on the breakdown voltage characteristics of silicone rubber filled with silicone carbide with a concentration of 0; 5; 10; 15 wt%. The sample was made in a dumbbell shaped with a length of 50 mm, a width of 25 mm and a thickness of 1 mm. The test was carried out using a needle-plate electrode with the application of an alt…
Study of the effect of bubbles on canola oil as insulation in breakdown voltage using a 220 VAC voltage source, with a frequency of 50 Hz. This experiment used two plane electrode system with a diameter of 40 mm and a distance between the two electrodes set at 2.5mm, using a plastic needle as a tool for injecting bubbles. There are three types of bubbles: single bubbles, string bubbles, and clu…
This study reported the formation of electrical treeing that occur on the epoxy resin insulating material with a thickness of 1 mm. The electrode system resembles a leaf-like sample specimen with a gap between the tip of needle electrode and aluminum tape of 1 mm. The samples were given 1% of the pollutant in the form of ammonia (NH3) with a variation of the conditioning time 12; 24; 48; and 96…
This study discusses the electrical treeing phenomenon that occurs in epoxy resin insulation material by formic acid (CH2O2) with variations conditioning time ranging 12; 24; and 48 hours. Epoxy resin without conditioning as a control using a leaf-like sample electrode system. The tests carried out are measurements of treeing inception voltage, treeing shape, treeing length, and accumulation da…
Solar Power Generation (SPG) is a rapidly growing renewable energy source in meeting global energy demands. Fresnel lenses are components used in SPG systems to enhance solar radiation absorption by solar panels. In the use of Fresnel lenses, the placement distance can affect the power output of the solar panels. The research findings indicate a significant influence between the placement dista…
Basically electricity has a very important role in everyday life. As we know, electricity is a primary need for industry, offices, shops and households. In its service, the State Electricity Company (PLN) often encounters problems, so it is not uncommon for it to be disconnected, both for maintenance purposes and for interruptions. To anticipate power outages by state electricity companies such…
The use of medical devices is one of the factors in the spread of disease due to medical devices that are not guaranteed sterilization. To be able to overcome this, efforts are made to sterilize medical devices using a sterilization machine whose process and use are in accordance with applicable sterilization standards, namely by using high temperatures to be able to kill microorganisms on medi…
Indonesia with thousands of islands has weaknesses in the infrastructure sector, hundreds of small islands do not have the resources to build roads. Rubber tires that are often used for vehicles have lower durability when used on inadequate roads. UGV is a vehicle that is run for a specific purpose without being driven by humans. Autonomus UGV moves based on a predetermined area or path, but it…
In the industrial sector, moving goods in warehouses requires a lot of operational cost. One effort to reduce operational cost is by using swarm robots. In completing tasks, the performance of swarm robots depends on formation control to coordinate swarm robots in forming and maintaining certain formations. In addition, formation control is also needed to avoid collisions between robots. Theref…