Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : Proceeding of the Electrical Engineering Computer Science and Informatics

The Electrical Performance of Epoxy Resin Insulator under Rain Contaminants Abdul Syakur; Hermawan .
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 1: EECSI 2014
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (690.358 KB) | DOI: 10.11591/eecsi.v1.427

Abstract

A polymeric insulating material as outdoor insulatorhas been developed and used on transmission lines and powerdistribution network. Each material has its own advantages anddisadvantages. Generally, polymeric materials have dielectricproperties better than the ceramic, glass and porcelain material.Factors affecting performance of outdoor insulators are like rain,humidity, ultraviolet rays, condensation and contaminant. When rainwater flow at the insulator surface, they will be easily contaminatedand flow current. These events can cause damage to the surface of theinsulator and finally cause flashover. To improve the surfaceproperties of materials, silicon rubber material that has the ability torepel water were added. Silica sand was mixed with silicon rubber toimprove the mechanical properties.This paper presents the electrical performance of epoxyresin insulator under rain contaminants. The tests were conducted athigh voltage laboratory with AC high voltage 50 Hz. Leakage currentcharacteristic of 20 kV outdoor insulators with silane epoxy resin hasbeen investigated under dry and wet condition. The chamber wasused to placing the insulator.The research results showed that the leakage currents oninsulator surface were affected rain contaminant and magnitude ofapplied voltage. A minimum leakage current achieved at outdoorinsulator without contaminant. For outdoor Insulator under raincontaminant, leakage current tends to increase. Shape of insulatorinfluence the leakage current also was analyzed.
Simple Resonant Power Converter Supplied by Photovoltaic for Ozonizer Mochammad Facta; Hermawan .; Zainal Salam
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 1: EECSI 2014
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (899.05 KB) | DOI: 10.11591/eecsi.v1.429

Abstract

Ozone gas (O3) is widely used in deodorization,decolourization, disinfection, bleaching processes, gas/airtreatment, chemical synthesis and recently in medicalapplications. Due the wide application of ozone then the ozonegenerator or ozonizer is urgently needed. A single switchresonant converter with ferrite transformer is proposed in thiswork. The prototype is constructed by two parts, first is ozonechamber and the second part is power converter with a singleswitch resonant converter and it supplied by photovoltaicsimulator. The converter is successful to convert 12 volt fromphotovoltaic to 1.89 kVpp high frequency voltage to ozonechamber. The ozone gas produce with the proposed system is 450ppm with oxygen as an input gas.
Experimental and Theoretical Prediction of Ozone Yield by High Frequency Silent Discharge Mochammad Facta; Hermawan Hermawan; Zainal Salam; Zolkafle Buntat
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 2: EECSI 2015
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (780.968 KB) | DOI: 10.11591/eecsi.v2.796

Abstract

The paper uses dimensional analysis to develop atheoretical prediction of the yield of a high frequency silentdischarge ozone generator at atmospheric pressure. Theexperimental work was carried out in order to verify the viability ofthe resulting yield equation, a rectangular shaped chamber with a1.5 mm air gap was constructed. Aluminium mesh electrodes wereused with metal tape and a planar mica sheet forming a dielectricbarrier. The power supply to the chamber was from a modifiedclass E resonant power inverter. It is established that predictionsusing the yield equation match closely with data obtained from theexperimental findings
The Effects of Cells Temperature Increment and Variations of Irradiation for Monocrystalline Photovoltaic Faishal Fuad Rahman Soeharto; Hermawan Hermawan
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 3: EECSI 2016
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (958.955 KB) | DOI: 10.11591/eecsi.v3.1133

Abstract

Photovoltaic cell technology has been developed to meet the target of 17% Renewable Energy in 2025 accordance with Indonesia Government Regulation No. 5 2006. Photovoltaic cells are made of semiconductor materials, namely silicon or germanium (p-n junction). These cells need the light that comes from solar irradiation which brings energy photons to convert light energy into electrical energy. It is different from the solar heater that requires heat energy or thermal of sunlight that is normally used for drying or heating water. Photovoltaic cells requires energy photons to perform the energy conversion process, the photon energy can be derived from sunlight. Energy photon is taken from the sun light along with the advent of heat due to black-body radiation, which can lead to temperature increments of photovoltaic cells. Increment of 1°C can decreased photovoltaic cell voltage of up to 2.3 mV per cell. In this research, it will be discuss the analysis of the effect of rising temperatures and variations of irradiation on the type monocrystalline photovoltaic. Those variation are analyzed, simulated and experiment by using a module of experiment. The test results show that increment temperature from 25° C to 80° C at cell of photovoltaic decrease the output voltage of the photovoltaic cell at 4.21 V, and it also affect the power output of the cell which decreases up to 0.7523 Watt. In addition, the bigger the value of irradiation received by cell at amount of 1000 W / m2, produce more output power cells at the same temperature.
Determination of Hydrophobic Contact Angle of Epoxy Resin Compound Silicon Rubber and Silica Abdul SYAKUR; Hermawan Hermawan; Heri SUTANTO
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 3: EECSI 2016
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (666.639 KB) | DOI: 10.11591/eecsi.v3.1159

Abstract

Epoxy resin is a thermosetting polymeric material which is very good for application of high voltage outdoor insulator in electrical power system. This material has several advantages, i.e. high dielectric strength, light weight, high mechanical strength, easy to blend with additive, and easy maintenance if compared to that of porcelain and glass outdoor insulators which are commonly used. However, this material also has several disadvantages, i.e. hydrophilic property, very sensitive to aging and easily degraded when there is a flow of contaminants on its surface. The research towards improving the performance of epoxy resin insulation materials were carried out to obtain epoxy resin insulating material with high water repellent properties and high surface tracking to aging. In this work, insulating material was made at room temperature vulcanization, with material composition: Diglycidyl Ether Bisphenol A (DGEBA), Metaphenylene Diamine (MPDA) as hardener with stoichiometric value of unity, and nanosilica mixed with Silicon Rubber (SiR) with 10% (RTV21), 20% (RTV22), 30% (RTV23), 40% (RTV24) and 50% (RTV25) variation. The usage of nanosilica and Silicon Rubber (SIR) as filler was expected to provide hydrophobic properties and was able to increase the value of surface tracking of materials. The performance of the insulator observed were contact angle of hydrophobic surface materials. Tests carried out using Inclined Plane Tracking procedure according to IEC 60-587: 1984 with Ammonium Chloride (NH4Cl) as contaminants flowed using peristaltic pumps. The results show that hydrophobic contact angle can be determined from each sample, and RTV25 has maximum contact angle among others.