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CORE LOSS SEPARATION TESTING IN TRANSFORMERS 1 PHASE 220/48V Maharani Putri; Ibnu Hajar; Abdullah Abdullah
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 2 No. 2 (2021): October 2021
Publisher : CERED Indonesia Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/injects.v2i2.497

Abstract

This test aims to calculate the loss of the core hysterisis and navel current (Eddy Current) separately, and to determine the effect of frequency and load flow on the loss of the transformer core. The first test is done by determining the frequency value of 25 Hz and voltage 110 V. Then the second test by determining the frequency value of 50 Hz and voltage 220 V. From the results of the pergukuran and calculation obtained at the frequency of 25 Hz, hysterisis loss = 4 watts, and eddy current loss = 0. While at a frequency of 50 Hz, hysterical loss = 8 Watts and eddy current loss = 0. The greater the frequency of sources given to a transformer, the greater the core loss to the transformer. Similarly, the greater the current flowing to the transformer, the greater the core loss. Core loss is proportional to current, this causes if there is a change in current it will greatly affect the core loss.
Knowledge Improvement through Smartphone Utilization in the Remote Control System Module of Electronic Equipment at SMKS Muhammadiyah 9 Medan Abdullah; Maharani Putri; Moh. Zainul Haq; Arridina Susan Silitonga; Cholish; Suprianto; Nooritawati Md Tahir; Abdul Rahim Bin Ridzuan; Pius Fernando Hutauruk; Priansus Rhein Rumahorbo
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 4 No. 3 (2023): Oktober
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v4i3.971

Abstract

Control technology is currently growing rapidly, one of the utilization of control technology that is currently experiencing rapid development is control of smart homes and automation systems coupled with rapid advances in the field of the Internet of Things, so that control technology becomes a remote control concept that is widely applied. Thematic Community Service Collaboration (TCSC) activity is a series of community service activities intended for the downstreaming of research products of Medan State Polytechnic lecturers in collaboration with Universiti Teknologi MARA (Malaysia) lecturers that can be utilized by the community (partner), namely SMKS Muhammadiyah 9 Medan aims to provide training from modules / trainers that have been specially designed consisting of several electronic equipment that has been equipped with wireless communication so that students can control electronic equipment remotely only through an application from a Smartphone without having to make direct contact like using a mechanical switch in general. The method used in this service is the lecture method followed by the discussion and question and answer method followed by the module / trainer demonstration method and how it works and the direct interaction method, namely students can try or practice directly, so that this training increases students' knowledge, skills and creativity towards the development of remote control technology in the future.