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Journal : Jurnal EECCIS

Minyak Kelapa Beraditif Minyak Zaitun sebagai Isolasi Peralatan Tegangan Tinggi Moch. Dhofir; Nur Rahma Dona; Unggul Wibawa; Rini Nur Hasanah
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 11 No. 2 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (794.458 KB) | DOI: 10.21776/jeeccis.v11i2.475


This paper discusses the improvement of dielectric strength of dielectric coconut oil using olive oil to be used as an alternative to liquid insulation on high voltage equipments. Increasing the breakdown voltage level has been done by adding olive oil of 5% -25% into coconut oil. Heating was considered to reduce the water content in coconut oil. Electrical testing (using breakdown voltage test), physical testing (by testing the water content using oven method), and analysis of the acid content of simple saturated fat using mixing formula, have been performed to determine the feasibility of coconut oil as insulation agent. The test results indicated the breakdown voltage of a pure coconut oil value of 23.47kV / 2.5mm, which did not fulfilled the IEC 156 standard, which is 30kV/2.5mm. The addition of olive oil could increase the breakdown voltage level to 38.73 kV / 2.5 mm and if the heating can reach 51.15kV/2.5mm. The highest breakdown volatge level of 54.01kV/ 2.5mm could be obtained by mixing the olive oil and heating the coconut oil at once. ell. It can be concluded that the addition of olive oil could decrease the saturated fatty acid content from 91% to 72.2%, whereas the heating could reduce the water content from 2697 ppm to 361 ppm. From the point of view of water content, the modified coconut oil could not meet the maximum permitted standard JIS 2320, which is 50 ppm. Based on the achieved breakdown voltage level, the considered coconut oil will be able to work on electrical equipment with a working voltage level of 0.75 kV-13.2 kV.
Implementasi Bluetooth HC–05 untuk Memperbarui Informasi Pada Perangkat Running Text Berbasis Android Akhmad Zainuri; Unggul Wibawa; Eka Maulana
Jurnal EECCIS Vol 9, No 2 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (660.002 KB)


Running Text Display is an information board in order to convey any information by  running text animation. This device is updated conventionally using a PC/notebook, so the updating process required by users  only in one place. User will be difficult to update the information, if they do not stay in the place or PC devices are not available. Alternative media to update and determine new information for dynamic running text device use the  data transfer capabilities between Android smart phone and microcontroller via HC-05 bluetooth module. The process of updating the data in the form of an array of characters successful transferred between Android applications and modules running text  are 90 % reliability with the furthest distance and through a barrier of 10.5 m and 9.4 m, respectively.