{"id":420,"date":"2020-11-01T08:25:49","date_gmt":"2020-11-01T08:25:49","guid":{"rendered":"http:\/\/people.utm.my\/shahrinmdayob\/?p=420"},"modified":"2020-11-01T08:25:49","modified_gmt":"2020-11-01T08:25:49","slug":"no-load-test-induction-motor","status":"publish","type":"post","link":"https:\/\/people.utm.my\/shahrinmdayob\/2020\/11\/01\/no-load-test-induction-motor\/","title":{"rendered":"No-load test induction motor"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The test is performed at poly-phase voltages and rated frequency applied to the stator terminals. When motor runs for some times and bearings get lubricated fully, at that time readings of applied voltage, input current and input power are taken. To calculate the rotational loss, subtract the stator I<sup>2<\/sup>R losses from the input power.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.electrical4u.com\/images\/february16\/1456563622.gif\" alt=\"theory of no load test of induction motor\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Calculation of No Load Test of Induction Motor<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Let the total input power supplied to <a href=\"https:\/\/www.electrical4u.com\/induction-motor-types-of-induction-motor\/\">induction motor<\/a> be W<sub>0<\/sub> watts.<br><img decoding=\"async\" src=\"https:\/\/www.electrical4u.com\/images\/february16\/1456563947.GIF\" alt=\"\"><br>Where,<br>V<sub>1<\/sub> = line voltage<br>I<sub>0<\/sub> = No load input current<br><br>Rotational loss = W<sub>0<\/sub> \u2013 S<sub>1<\/sub><br>Where,<br>S<sub>1<\/sub> = stator winding loss = N<sub>ph<\/sub> I<sup>2<\/sup> R<sub>1<\/sub><br>N<sub>ph<\/sub> = Number phase<br>The various losses like windage loss, core loss, and rotational loss are fixed losses which can be calculated by<br><br>Stator winding loss = 3I<sub>o<\/sub><sup>2<\/sup>R<sub>1<\/sub><br>Where,<br>I<sub>0<\/sub> = No load input current<br>R<sub>1<\/sub> = Resistance of the motor<br><br>Core loss = 3G<sub>o<\/sub>V<sup>2<\/sup><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The test is performed at poly-phase voltages and rated frequency applied to the stator terminals. When motor runs for some times and bearings get lubricated fully, at that time readings of applied voltage, input current and input power are taken. To calculate the rotational loss, subtract the stator I2R losses from the input power. Calculation [&hellip;]<\/p>\n","protected":false},"author":21440,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174,173],"class_list":["post-420","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-induction-motor","tag-no-load-test"],"_links":{"self":[{"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/posts\/420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/users\/21440"}],"replies":[{"embeddable":true,"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/comments?post=420"}],"version-history":[{"count":1,"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/posts\/420\/revisions"}],"predecessor-version":[{"id":421,"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/posts\/420\/revisions\/421"}],"wp:attachment":[{"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/media?parent=420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/categories?post=420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/people.utm.my\/shahrinmdayob\/wp-json\/wp\/v2\/tags?post=420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}