{"id":110,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/electrical-faults\/"},"modified":"2026-07-03T09:54:22","modified_gmt":"2026-07-03T09:54:22","slug":"electrical-faults","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/gu\/glossary\/electrical-faults\/","title":{"rendered":"Diagnosing Electrical Faults with Vibration Analysis"},"content":{"rendered":"<h1>Diagnosing Electrical Faults in AC Motors with Vibration Analysis<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/balanset-1\/\" title=\"\u0aaa\u0acb\u0ab0\u0acd\u0a9f\u0ac7\u0aac\u0ab2 \u0aac\u0ac7\u0ab2\u0ac7\u0aa8\u0acd\u0ab8\u0ab0 \u0a85\u0aa8\u0ac7 \u0a95\u0a82\u0aaa\u0aa8 \u0ab5\u0abf\u0ab6\u0acd\u0ab2\u0ac7\u0ab7\u0a95 \u0aac\u0ac7\u0ab2\u0ac7\u0aa8\u0acd\u0ab8\u0ac7\u0a9f-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A full kit portable balancer and vibration analyzer\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/gu\/product-category\/devices\/\" rel=\"tag\">\u0a89\u0aaa\u0a95\u0ab0\u0aa3\u0acb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/gu\/product\/balanset-1\/\" title=\"\u0aaa\u0acb\u0ab0\u0acd\u0a9f\u0ac7\u0aac\u0ab2 \u0aac\u0ac7\u0ab2\u0ac7\u0aa8\u0acd\u0ab8\u0ab0 \u0a85\u0aa8\u0ac7 \u0a95\u0a82\u0aaa\u0aa8 \u0ab5\u0abf\u0ab6\u0acd\u0ab2\u0ac7\u0ab7\u0a95 \u0aac\u0ac7\u0ab2\u0ac7\u0aa8\u0acd\u0ab8\u0ac7\u0a9f-1A\">\u0aaa\u0acb\u0ab0\u0acd\u0a9f\u0ac7\u0aac\u0ab2 \u0aac\u0ac7\u0ab2\u0ac7\u0aa8\u0acd\u0ab8\u0ab0 \u0a85\u0aa8\u0ac7 \u0a95\u0a82\u0aaa\u0aa8 \u0ab5\u0abf\u0ab6\u0acd\u0ab2\u0ac7\u0ab7\u0a95 \u0aac\u0ac7\u0ab2\u0ac7\u0aa8\u0acd\u0ab8\u0ac7\u0a9f-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0acb: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d \u0aa4\u0aae\u0abe\u0ab0\u0abe \u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0acd\u0aaf\u0ac1\u0a82 \u0a9b\u0ac7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/vibration-sensor\/\" title=\"\u0ab5\u0abe\u0a87\u0aac\u0acd\u0ab0\u0ac7\u0ab6\u0aa8 \u0ab8\u0ac7\u0aa8\u0acd\u0ab8\u0ab0\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A vibration sensor close-up\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/gu\/product-category\/parts\/\" rel=\"tag\">\u0aad\u0abe\u0a97\u0acb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/gu\/product\/vibration-sensor\/\" title=\"\u0ab5\u0abe\u0a87\u0aac\u0acd\u0ab0\u0ac7\u0ab6\u0aa8 \u0ab8\u0ac7\u0aa8\u0acd\u0ab8\u0ab0\">\u0ab5\u0abe\u0a87\u0aac\u0acd\u0ab0\u0ac7\u0ab6\u0aa8 \u0ab8\u0ac7\u0aa8\u0acd\u0ab8\u0ab0<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0acb: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d \u0aa4\u0aae\u0abe\u0ab0\u0abe \u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0acd\u0aaf\u0ac1\u0a82 \u0a9b\u0ac7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u0a93\u0aaa\u0acd\u0a9f\u0abf\u0a95\u0ab2 \u0ab8\u0ac7\u0aa8\u0acd\u0ab8\u0ab0 (\u0ab2\u0ac7\u0ab8\u0ab0 \u0a9f\u0ac7\u0a95\u0acb\u0aae\u0ac0\u0a9f\u0ab0)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0a93\u0aaa\u0acd\u0a9f\u0abf\u0a95\u0ab2 \u0ab8\u0ac7\u0aa8\u0acd\u0ab8\u0ab0 (\u0ab2\u0ac7\u0ab8\u0ab0 \u0a9f\u0ac7\u0a95\u0acb\u0aae\u0ac0\u0a9f\u0ab0)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/gu\/product-category\/parts\/\" rel=\"tag\">\u0aad\u0abe\u0a97\u0acb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/gu\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u0a93\u0aaa\u0acd\u0a9f\u0abf\u0a95\u0ab2 \u0ab8\u0ac7\u0aa8\u0acd\u0ab8\u0ab0 (\u0ab2\u0ac7\u0ab8\u0ab0 \u0a9f\u0ac7\u0a95\u0acb\u0aae\u0ac0\u0a9f\u0ab0)\">\u0a93\u0aaa\u0acd\u0a9f\u0abf\u0a95\u0ab2 \u0ab8\u0ac7\u0aa8\u0acd\u0ab8\u0ab0 (\u0ab2\u0ac7\u0ab8\u0ab0 \u0a9f\u0ac7\u0a95\u0acb\u0aae\u0ac0\u0a9f\u0ab0)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0acb: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d \u0aa4\u0aae\u0abe\u0ab0\u0abe \u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0acd\u0aaf\u0ac1\u0a82 \u0a9b\u0ac7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/balanset-4\/\" title=\"\u0aac\u0abe\u0ab2\u0aa8\u0acd\u0ab8\u0ac7\u0a9f-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera rotor balancing kit: carry case, multi-channel signal conditioner, handheld analyzer, magnetic base, vibration sensors, and coiled cables.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/gu\/product-category\/devices\/\" rel=\"tag\">\u0a89\u0aaa\u0a95\u0ab0\u0aa3\u0acb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/gu\/product\/balanset-4\/\" title=\"\u0aac\u0abe\u0ab2\u0aa8\u0acd\u0ab8\u0ac7\u0a9f-4\">\u0aac\u0abe\u0ab2\u0aa8\u0acd\u0ab8\u0ac7\u0a9f-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0acb: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d \u0aa4\u0aae\u0abe\u0ab0\u0abe \u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0acd\u0aaf\u0ac1\u0a82 \u0a9b\u0ac7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/magnet-stand\/\" title=\"\u0aae\u0ac7\u0a97\u0acd\u0aa8\u0ac7\u0a9f\u0abf\u0a95 \u0ab8\u0acd\u0a9f\u0ac7\u0aa8\u0acd\u0aa1 \u0a87\u0aa8\u0acd\u0ab8\u0abe\u0a87\u0a9d-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0a9a\u0ac1\u0a82\u0aac\u0a95 \u0a86\u0aa7\u0abe\u0ab0.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/gu\/product-category\/parts\/\" rel=\"tag\">\u0aad\u0abe\u0a97\u0acb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/gu\/product\/magnet-stand\/\" title=\"\u0aae\u0ac7\u0a97\u0acd\u0aa8\u0ac7\u0a9f\u0abf\u0a95 \u0ab8\u0acd\u0a9f\u0ac7\u0aa8\u0acd\u0aa1 \u0a87\u0aa8\u0acd\u0ab8\u0abe\u0a87\u0a9d-60-kgf\">\u0aae\u0ac7\u0a97\u0acd\u0aa8\u0ac7\u0a9f\u0abf\u0a95 \u0ab8\u0acd\u0a9f\u0ac7\u0aa8\u0acd\u0aa1 \u0a87\u0aa8\u0acd\u0ab8\u0abe\u0a87\u0a9d-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0acb: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d \u0aa4\u0aae\u0abe\u0ab0\u0abe \u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0a89\u0aae\u0ac7\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0acd\u0aaf\u0ac1\u0a82 \u0a9b\u0ac7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/gu\/product\/reflective-tape\/\" title=\"\u0aaa\u0acd\u0ab0\u0aa4\u0abf\u0aac\u0abf\u0a82\u0aac\u0ac0\u0aa4 \u0a9f\u0ac7\u0aaa\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0aaa\u0acd\u0ab0\u0aa4\u0abf\u0aac\u0abf\u0a82\u0aac\u0ac0\u0aa4 \u0a9f\u0ac7\u0aaa\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/gu\/product-category\/parts\/\" rel=\"tag\">\u0aad\u0abe\u0a97\u0acb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/gu\/product\/reflective-tape\/\" title=\"\u0aaa\u0acd\u0ab0\u0aa4\u0abf\u0aac\u0abf\u0a82\u0aac\u0ac0\u0aa4 \u0a9f\u0ac7\u0aaa\">\u0aaa\u0acd\u0ab0\u0aa4\u0abf\u0aac\u0abf\u0a82\u0aac\u0ac0\u0aa4 \u0a9f\u0ac7\u0aaa<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/gu\/wp-json\/wp\/v2\/glossary\/110?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 \u0a95\u0ab0\u0acb\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0a95\u0abe\u0ab0\u0acd\u0a9f\u0aae\u0abe\u0a82 \u0ab8\u0abe\u0aae\u0ac7\u0ab2 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class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Electrical faults<\/strong> in AC induction motors are defects in the magnetic circuit \u2014 the stator, the rotor, or the air gap between them \u2014 that betray themselves through vibration. Although <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/vibration-analysis\/\">vibration analysis<\/a> is most often associated with mechanical problems such as <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/unbalance\/\">unbalance<\/a> and <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/bearing-defects\/\">bearing defects<\/a>, it is also a powerful way to find electrical trouble. Electrical faults generate pulsating magnetic forces that make the stator and rotor vibrate; those vibrations travel through the motor frame and are readily picked up by an <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/accelerometer\/\">accelerometer<\/a>. The art lies in recognising patterns tied to the supply frequency and to the motor&#8217;s pole count.<\/p>\n<h2>1. Introduction: Electrical Faults as a Vibration Source<\/h2>\n<p>The key to diagnosing electrical faults is to look for specific peaks at frequencies related to the electrical line frequency \u2014 50 Hz or 60 Hz depending on the region \u2014 and to the number of poles in the motor. Because these forces are magnetic rather than purely mechanical, two clues separate them from ordinary mechanical faults: their frequencies lock to the supply rather than to shaft speed, and many of them change with motor load. The classic diagnostic test is to drop the load while watching the spectrum; a peak that collapses when the load is removed is almost certainly electrical in origin. A clear understanding of <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/electrical-frequency\/\">electrical frequency<\/a> and of motor <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/slip-frequency\/\">slip<\/a> underpins every diagnosis below.<\/p>\n<h2>2. Stator Faults<\/h2>\n<p>Stator problems \u2014 loose iron, coil looseness, or shorted laminations \u2014 can make the stator eccentric or distorted, producing an uneven magnetic field around the bore. The result is typically a magnetic force that pulses at twice the line frequency.<\/p>\n<ul>\n<li><strong>Vibration signature:<\/strong> the most common indicator is an elevated peak at <strong>2\u00d7 the line frequency (2\u00d7F<sub>L<\/sub>)<\/strong>. For a 60 Hz motor this is 120 Hz (7200 CPM); for a 50 Hz motor it is 100 Hz (6000 CPM). Note that a 2\u00d7F<sub>L<\/sub> peak is not unique to stator faults \u2014 supply-voltage imbalance, air-gap eccentricity and frame resonance can raise it too.<\/li>\n<li><strong>Characteristics:<\/strong> the 2\u00d7F<sub>L<\/sub> peak is usually steadier and less load-sensitive than rotor-bar signatures, but it is not guaranteed to be constant \u2014 confirm the diagnosis with phase-current checks and by comparing loaded and unloaded spectra. The vibration is often highest in the direction of the stator mounting feet, where the frame is stiffest against the pulsating pull. <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/stator-defects\/\">Stator defects<\/a> are easily mistaken for mechanical <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/looseness\/\">looseness<\/a> at 2\u00d7 running speed, so the load test and a precise frequency reading matter.<\/li>\n<\/ul>\n<h2>3. Rotor Faults (Broken Rotor Bars)<\/h2>\n<p>Cracked or broken rotor bars are a common failure in AC induction motors. When a bar breaks it disrupts current flow in the rotor cage, producing localised heating and a pulsating torque that modulates the running-speed vibration.<\/p>\n<ul>\n<li><strong>Vibration signature:<\/strong> the classic sign of <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/broken-rotor-bars\/\">broken rotor bars<\/a> is <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/pole-pass-frequency\/\">pole pass frequency (F<sub>P<\/sub>)<\/a> <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/sidebands\/\">sidebands<\/a> straddling the <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/running-speed\/\">running speed (1\u00d7)<\/a> peak and its <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/harmonics\/\">harmonics<\/a>.<\/li>\n<li><strong>Pole pass frequency (F<sub>P<\/sub>):<\/strong> the rate at which the rotor slips past the rotating magnetic field, calculated as <strong>F<sub>P<\/sub> = number of poles \u00d7 slip frequency<\/strong>, where slip frequency is the difference between the synchronous speed of the field and the actual shaft speed.<\/li>\n<li><strong>Characteristics:<\/strong> look for a 1\u00d7 peak flanked by two clear sidebands, one at (1\u00d7 + F<sub>P<\/sub>) and one at (1\u00d7 \u2212 F<sub>P<\/sub>). As damage worsens, sidebands appear around the 2\u00d7 and 3\u00d7 harmonics too. Unlike stator faults, this signature is highly load-sensitive \u2014 the sidebands grow as load increases and can vanish entirely at no load.<\/li>\n<\/ul>\n<h2>4. Eccentric Air Gap<\/h2>\n<p>\u0a86 <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/air-gap\/\">air gap<\/a> is the small clearance between rotor and stator. If it is not uniform around the bore, the result is an unbalanced <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/magnetic-pull\/\">magnetic pull<\/a> that forces the rotor to vibrate.<\/p>\n<ul>\n<li><strong>Static eccentricity:<\/strong> the rotor turns centred in its bearings, but the stator core is out of round, so the narrowest point of the gap is fixed in space.<\/li>\n<li><strong>Dynamic eccentricity:<\/strong> the rotor itself is out of round or off-centre, so the narrowest point of the gap rotates with the rotor \u2014 a condition closely linked to <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/rotor-eccentricity\/\">rotor eccentricity<\/a>.<\/li>\n<li><strong>Vibration signature:<\/strong> static eccentricity typically raises a steady peak at 2\u00d7F<sub>L<\/sub>, because the narrow-gap point does not move. Dynamic eccentricity modulates the gap as the rotor turns, producing vibration at 1\u00d7 running speed and pole-pass-frequency sidebands \u2014 at 2\u00d7F<sub>L<\/sub> \u00b1 F<sub>P<\/sub> and around the running-speed harmonics. In practice the two often coexist, giving a complex combined pattern.<\/li>\n<\/ul>\n<h2>5. Confirmation and Best Practices<\/h2>\n<p>Electrical faults sit close to running-speed components in the spectrum, so disciplined measurement is essential to tell them apart.<\/p>\n<ul>\n<li><strong>High-resolution spectrum:<\/strong> diagnosing electrical faults demands a high-resolution <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/fft\/\">FFT \u0ab8\u0acd\u0aaa\u0ac7\u0a95\u0acd\u0a9f\u0acd\u0ab0\u0aae<\/a> with enough lines to separate running-speed harmonics from line-frequency harmonics and their closely spaced sidebands. A <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/zoom-fft\/\">zoom FFT<\/a> is often the only way to resolve the slip-frequency sidebands cleanly.<\/li>\n<li><strong>Load is critical:<\/strong> for rotor-bar problems the motor must run under significant load \u2014 typically above 75% \u2014 for the defect to show. Varying the load while watching the peaks is the most reliable field discriminator between electrical and mechanical sources.<\/li>\n<li><strong>Capture it in the field:<\/strong> a portable two-channel analyser such as the <a href=\"https:\/\/vibromera.eu\/gu\/%e0%aa%89%e0%aa%a4%e0%ab%8d%e0%aa%aa%e0%aa%be%e0%aa%a6%e0%aa%a8\/balanset-1\/\">\u0aac\u0ac7\u0ab2\u0abe\u0aa8\u0acd\u0ab8\u0ac7\u0a9f-1 \u0a8f<\/a> records the spectrum and the synchronised running speed on the motor in place, making it straightforward to flag a 2\u00d7F<sub>L<\/sub> stator peak or load-dependent pole-pass sidebands before committing to a teardown \u2014 and, where the real culprit turns out to be mechanical unbalance, to <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/field-balancing\/\">balance the rotor<\/a> on the same visit.<\/li>\n<li><strong>Confirm with other technologies:<\/strong> diagnoses can be corroborated with motor current signature analysis (MCSA) or with <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/thermography\/\">infrared thermography<\/a>, which reveals the localised heating caused by broken bars or shorted laminations. Cross-checking against the broader family of <a href=\"https:\/\/vibromera.eu\/gu\/glossary\/motor-defects\/\">motor defects<\/a> avoids confusing an electrical fault with a mechanical one.<\/li>\n<\/ul>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/gu\/glossary\/\">\u2190 Back to Main Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>A guide to identifying electrical faults in AC induction motors using vibration analysis, including signatures for stator, rotor, and air gap issues.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-110","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/glossary\/110","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/glossary\/110\/revisions"}],"predecessor-version":[{"id":102156,"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/glossary\/110\/revisions\/102156"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/media?parent=110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/categories?post=110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/gu\/wp-json\/wp\/v2\/tags?post=110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}