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PENGARUH PENAMBAHAN DIPHENYLAMINE (DPA) PADA KEKUATAN ISOLASI UNTUK VISKOSITAS CAMPURAN MINYAK KEDELAI DAN MINYAK BIJI BUNGA MATAHARI SEBAGAI MEDIA ISOLASI CAIR TRANSFORMATOR

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This study investigates the potential of a soybean oil–sunflower oil blend as an environmentally friendly alternative transformer insulating liquid with the addition of Diphenylamine (DPA). The mixtures were prepared in ratios of 25:75, 50:50, and 75:25, with DPA concentrations of 0, 0.5, 1, and 1.5 wt%. Viscosity testing was conducted using a Zahn Cup type 2 based on the Standard Test Method for Immersion Viscosity Cups (ASTM D4212) at temperatures of 40°C, 50°C, and 60°C. Breakdown voltage testing employed a sphere–sphere electrode system with a 2.5 mm gap and a voltage rise rate of 1 kV/s, following IEC 60156. The results show that pure soybean oil exhibits the highest viscosity at 38.3 cSt, while the blended oils demonstrate reduced viscosity due to differences in polarity and molecular structure. The addition of DPA does not consistently increase viscosity; however, it positively influences the improvement of breakdown voltage up to an optimum concentration. Therefore, the mixture of both oils with DPA additives shows potential as an environmentally friendly alternative insulating liquid for transformers.

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Detail Information

Series Title

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Call Number

T1869662025

Publisher

Indralaya : Prodi Teknik Elektro, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

xx, 176 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

621.314 07

Content Type

Text

Media Type

unmediated

Carrier Type

other (computer)

Edition

-

Subject(s)

Transformator
Prodi Teknik Elektro

Specific Detail Info

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Statement of Responsibility

MI

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