This paper describes the design of a microcontroller-based short message terminal (Short Message Service). The use of microcontroller system will make the performance process effective and efficient, one of them is the use of Arduino. On the other hand, the most explosive development of mobile phone technology users is the use of short messaging services, often known as SMS (Short Message Service). Simple commands begin to be needed by users of short messaging services or often known SMS (Short Message Service) which requires ease in controlling electrical equipment So that the distance that becomes a constraint in controlling a device in this case in particular is the equipment with electrical energy consumption we can avoid. By using this tool can control the tools that use electrical energy to run the system carried in the tool remotely. While the tool that can be used to control electrical appliance one of them is through short message media mobile phone or often known as SMS. To be able to connect all electrical equipment required Contact Terminal Stop. In this tool use Arduino Uno to control all components and SIM900A to send and receive SMS command and LCD as tool status display. ABSTRAKJurnal ini menjelaskan tentang Rancang bangun terminal stop kontak Via SMS (Short Message Service) Berbasis mikrokontroler. Penggunaan sistem mikrokontroler akan membuat proses kinerja efektif dan efisien, Salah satunya adalah penggunaan Arduino. Dilain pihak perkembangan pengguna layanan teknologi mobile phone yang paling meledak adalah penggunaan jasa layanan pesan singkat atau sering dikenal SMS (Short Message Service). Perintah sederhana mulai dibutuhkan oleh para pengguna jasa layanan pesan singkat atau sering dikenal SMS (Short Message Service) yang membutuhkan kemudahan dalam mengendalikan peralatan listrik Sehingga jarak yang menjadi kendala dalam mengendalikan sebuah perlatan dalam hal ini khususnya adalah peralatan dengan komsumsi energi listrik dapat kita hindari. Dengan menggunakan alat ini dapat mengendalikan alat-alat yang menggunakan energi listrik untuk menjalankan sistem yang dibawa didalam alat tersebut dari jarak jauh.Sedangkan alat yang dapat digunakan untuk mengendalikan alat listrik salah satunya adalah melalui media pesan singkat mobile phone atau sering dikenal dengan sebutan SMS.Untuk dapat menghubungkan semua peralatan listrik dibutuhkan Terminal Stop Kontak.Pada alat ini menggunakan Arduino Uno untuk mengontrol semua komponen dan SIM900A untuk mengirim dan menerima SMS perintah serta LCD sebagai tampilan status alat.

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The final report discusses replenishment plan of distribution substation I.598 major at apel feeder in PT. PLN Rival Rayon Palembang to decreases overload fault, drop voltage, and power losses conductor. According to the discussion on the final report, obtained replenishment plan of distribution substation major is able to decreases one of major’s loading which has the biggest load, namely B major from 65,61% is decreased to 21,95%, decreases drop voltage of B major’s conductors from 7,5% is decreased to 1% on phase R, 4,3% is decreased to 1,4% on phase S and 6% is decreased to 1,9% on phase T and also decreases power losses of B major’s conductors from 1,6 kW is decreased to 0,04 kW on phase R, 0,6 kW on decreased to 0,09 kW on phase S and 1,2 kW is decreased to 0,19 kW on phase T. These conditions are occurred by replenishment of conductor and dividing B major’s load to new majors, namely C and D major so that they influence loading, current load, and conductor length will be decreased. Therefore overload fault, drop voltage, and power losses conductor will be minimized.  Key words : Replenishment of Substation Major, Overload, Drop Voltage, Power Losses

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