AUTHOR REVISION REPORT Note: For comments/questions/Answer/Revisions, use the language according to the language used in the manuscript (English or Bahasa Indonesi. Manuscript Identity Title "Optimization Objective Function Corona Discharge Acoustic Using Fuzzy c-Means (FcM ) As the First Step of Detection Early Isolation Failure" Manuscript number Article Type First Submission date Recommendation on First Submission Manuscript Revision Submission Date Research article / Review Article 2023-03-07 Reviewer 1 (RV. : Minor Revisions Reviewer 2 (RV. : Major Revisions 2023 Ae 08 - 21 II. ReviewerAos Comments General Impression Reviewers (R1 & R. Comments/Questions General comprehension of the manuscript Similarity check by Turnitin shown high number, total 39% without One of the sources is up to 16%, the other 5% and less. Please revise the manuscript, cite the sources, and paraphrase them in the revised manuscript. Many figures are not well prepared, huge revision is needed for the figures to be more The introduction is too long, please make it concise. The research position and article contribution are not stated clearly and explicitly in introduction, please add them. Language/style/ Grammar in general Many figures need updated as written in Bahasa Indonesia. Fig 2. Fig 5. Fig 6. Fig 8. There is no explanation of term use in mathematical formula, please add Introduction and method part need to be revised. Structure Authors Comments/Answers/Revisions in the Manuscript In the script, there has been Similarity check by Turnitin is now only 15% without The research position and contribution of the article have been stated clearly and explicitly in the introduction. English has been used to update the Fig 2. Fig 5. Fig 6. Fig 8. Fig 2. Fig 5. Fig 6. Fig 8, there are mathematical formula with Immediate advantages of research and Immediate benefits of research have been added to the introduction and methodology section. Level of enthusiasm Low as the current manuscript is not The revision has been carried out well prepared, especially figures in according to the instructions. Authors encourage to revise them. Revision on Major Comments Reviewers (R1 & R. Major Comments Abstract Introduction Methodology Results and Discussions Authors Answers/Revisions in the Manuscript Abstract is clear and concise. In the abstract section has been show Immediate benefits of research There are two Fig 1 in introduction, 2. The numbering format has been changed please recheck the numbering format. from figure 1 to figure 2 and the title of The title of the second of Fig 1, perhaps figure 2 has been changed from "Corona could be revised to perhaps Auimpact of discharge in a 20 kV cubicle" to "Impact of corona discharged in 20kV cubicles. Ay corona discharged in 20kV cubicles" It seems Fig 1 corona on SUTET 3. Ref has been added to figure 1 insulator is taken from external 4. The introduction has been concise source, please make sure cite the ref. It has been explained The introduction is too long, please make it concise. Please make sure similar study of early warning corona detection from existing methods are cited in the introduction, then explain the gap dan the contribution of proposed study. It seems that 1. 1 to 1. 4 is part of 6. Sections 1. 1 to 1. 4 have been grouped into the methodology section in chapter 2. Please add units used in Fig 3, to help 7. The units has been added in figure 3 the reader understand in detail the schematic diagram of the proposed Please redraw Fig 6 Ae Fig 9 to make the figures clear and easy to follow. Make all figures intuitive by clear axis and title. Please increase the resolution and explain the behavior or pattern of the results. The captions and arrows in Figures 6 through 9 have been improved. The resolution has been improved and the pattern of results has been explained according to the revision Conclusions Revision on Minor Comments Reviewers (R1 & R. Minor Comments/Questions Style/Grammar Consistency/Terminology References