Pengaruh Kontaminan Alga di Permukaan Isolator Polimer Terhadap Karakteristik Tegangan Tembus dan Arus Bocor

Jannah, Namira Roudlotul (2022) Pengaruh Kontaminan Alga di Permukaan Isolator Polimer Terhadap Karakteristik Tegangan Tembus dan Arus Bocor. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Isolator polimer memiliki beberapa kelebihan yaitu, memiliki sifat kedap air (hydrophobic), sifat dielektrik dan termal yang baik, serta massa jenis yang lebih ringan. Meskipun bersifat hidrfobik, dalam perkembangannya ditemukan beberapa kasus mengenai kontaminasi mikrobiologi berjenis alga hijau pada permukaan isolator polimer. Kontaminasi dan kondisi permukaan dapat mempengaruhi kekuatan dielektrik pada suatu bahan isolator.
Semakin tinggi tingkat kontaminasi pada permukaan isolator, kekuatan dielektriknya akan semakin menurun. Pada penelitian ini diamati proses kontaminasi serta pengaruh kontaminan
mikrobiologi terhadap karakteristik tegangan tembus dan arus bocor pada isolator pos berbahan polimer. Proses kontaminasi akan dipercepat dengan perendaman isolator selama 4 bulan pada air yang telah diberi bibit alga. Analisis hasil pengujian dilakukan dengan pengamatan kondisi permukaan isolator serta pengamatan pengaruh kontaminan terhadap tegangan tembus dan arus bocor. Proses pertumbuhan alga pada masing-masing isolator diamati permukaannya menggunakan Scanning Electrone microscope (SEM). Didapatkan hasil bahwa, terjadi penurunan kekuatan dielektrik akibat kontaminasi alga hijau pada permukaan polimer dan dapat diamati melalui penurunan tegangan tembus yaitu dari 42,49 kV menjadi 37,32 kV serta kenaikan arus bocor dari 0,89 mA menjadi 0,98 mA. Proses kontaminasi pada permukaan isolator polimer diamati secara visual dengan ketebalan alga hijau yang semakin meningkat seiring berjalannya waktu dan terjadi degradasi bahan pengisi Aluminium Trihydrate (ATH) yaitu Aluminium (Al) sehingga kekuatan dielektrik dan thermal bahan polimer menurun.
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Polymer insulators have several advantages, such as having water-resistant (hydrophobic) properties,better dielectric and thermal properties, and lighter density. Although it is
hydrophobic, there are several cases that found regarding microbiological contamination of the type of green algae on the surface of polymer insulators. Contamination and surface conditions can affect the dielectric strength of insulating material. The aim of this study is to observe the contamination process and the effect of microbiological contaminants on the breakdown voltage and leakage current characteristics of polymeric insulator. The contamination process will accelerate by immersing the insulator for 4 months in water with algae seeds. The test results are analyzed by observing the surface condition of the insulator and observing the effect of contaminants on the breakdown voltage and leakage current. The algae growth process on
insulator are observed on the surface using a Scanning Electron microscope (SEM). The results showed a decrease in dielectric strength due to microbiological contamination on the polymer surface and could be observed through the decreasing of breakdown voltage from 42.49 kV to 37.32 kV and an increase in leakage current from 0.89 mA to 0.98 mA. The contamination process are observed visually with the thickness of green algae increasing over time and degradation of the Aluminum Trihydrate (ATH) filler material, namely Aluminum (Al) so the dielectric and thermal strength of the polymer material decreased.

Item Type:	Thesis (Other)
Additional Information:	RSE 621.319 37 Jan p-1 2022
Uncontrolled Keywords:	Arus Bocor, Isolator Polimer, Scanning Electrone microscope, Tegangan Tembus
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	- Davi Wah
Date Deposited:	20 Nov 2023 04:18
Last Modified:	20 Nov 2023 04:18
URI:	http://repository.its.ac.id/id/eprint/105132

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