{"id":1086,"date":"2023-12-12T03:01:18","date_gmt":"2023-12-11T20:01:18","guid":{"rendered":"http:\/\/www.tneutron.net\/elektro\/?p=1086"},"modified":"2023-12-08T19:13:18","modified_gmt":"2023-12-08T12:13:18","slug":"thermal-load-relay","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/elektro\/thermal-load-relay\/","title":{"rendered":"Thermal Over Load Relay"},"content":{"rendered":"<p>Alat pengaman yang digunakan bila pada motor terjadi beban lebih disebut Thermal Over Load Relay (TOR\/TOL) biasanya digandengkan dengan kontaktor, dipasaran ada juga pengaman beban lebih yang terintegrasi pada Motor Circuit Breaker. Relay ini biasanya dihubungkan pada kontaktor ke kontak utama 2, 4, dan 6 sebelum dihubungkan ke beban (motor). Gunanya untuk memberikan perlindungan terhadap motor dari kerusakan akibat beban lebih.<\/p>\n<p>Beberapa penyebab terjadinya beban lebih adalah :<\/p>\n<ul>\n<li>Terlalu besarnya beban mekanik pada motor.<\/li>\n<li>Arus start yang terlalu besar atau motor berhenti secara mendadak.<\/li>\n<li>Terbukanya salah satu fasa dari motor 3 fasa.<\/li>\n<\/ul>\n<p>Arus yang terlalu besar timbul pada beban motor akan mengalir pada belitan motor yang dapat menyebabkan kerusakan dan terbakarnya belitan motor. Untuk menghindari hal tersebut terjadi dipasang Thermal Over Load Relay (TOR\/TOL) pada rangkaian pengendali. Prinsip kerja Thermal Over Load Relay (TOR\/TOL) berdasarkan panas (temperatur) yang ditimbulkan oleh arus yeng mengalir melalui elemen-elemen pemanas bimetal, yang menakibatkan bimetal melengkung selanjutnya akan menggerakan kontak-kontak mekanik pemutus rangkaian listrik kontak 95 \u2013 96 membuka dan kontak 97 \u2013 98 menutup.<br \/>\n<a href=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image-6.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-width: 0px;\" title=\"image\" src=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image_thumb-6.png\" alt=\"image\" width=\"244\" height=\"206\" border=\"0\" \/><\/a><br \/>\nGambar 5-5. TOR dalam keadaan normal.<\/p>\n<p><a href=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image-8.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; padding-top: 0px; padding-left: 0px; margin: 0px; display: inline; padding-right: 0px; border-width: 0px;\" title=\"image\" src=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image_thumb-8.png\" alt=\"image\" width=\"244\" height=\"215\" border=\"0\" \/><\/a><br \/>\nGambar 5-6. TOR dalam keadaan beban lebih.<\/p>\n<p><a href=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image-9.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-width: 0px;\" title=\"image\" src=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image_thumb-9.png\" alt=\"image\" width=\"344\" height=\"202\" border=\"0\" \/><\/a><br \/>\nGambar 5-7. Kontruksi Thermal Over Load Relay (TOR\/TOL).<\/p>\n<p>Perlengkapan lain dari thermal beban lebih adalah reset mekanik yang fungsinya untuk mengembalikan kedudukan kontak 95 \u2013 96 pada posisi semula (menghubung dalam keadaan normal) dan kontak 97 \u2013 98 (membuka dalam keadaan normal). Setelah tombol reset ditekan maka kontak 95 \u2013 96 yang semula membuka akibat beban lebih akan kembali menutup dan kontak 97 \u2013 98 akan kembali membuka. Bagian lain dari thermal beban lebih adalah pengatur batas arus.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alat pengaman yang digunakan bila pada motor terjadi beban lebih disebut Thermal Over Load Relay (TOR\/TOL) biasanya digandengkan dengan kontaktor,<\/p>\n","protected":false},"author":1,"featured_media":1085,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[1387],"tags":[1536,1537,1543,1542,1545,1544,1540,1538,1546,1539,1541],"class_list":["post-1086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pengoperasian-motor-listrik","tag-thermal-over-load","tag-thermal-overload","tag-thermal-overload-chart","tag-thermal-overload-elite-dangerous","tag-thermal-overload-fuse","tag-thermal-overload-heater-chart","tag-thermal-overload-protection","tag-thermal-overload-relay","tag-thermal-overload-relay-symbol","tag-thermal-overload-switch","tag-thermal-overload-symbol"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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