{"id":63,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/broken-rotor-bars\/"},"modified":"2026-07-03T09:57:04","modified_gmt":"2026-07-03T09:57:04","slug":"broken-rotor-bars","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/fi\/glossary\/broken-rotor-bars\/","title":{"rendered":"Mit\u00e4 ovat rikkoutuneet roottorin sauvat? Oravah\u00e4kkimoottorin vika"},"content":{"rendered":"<h1>Rikkoutuneiden roottorin tankojen ymm\u00e4rt\u00e4minen<\/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\/fi\/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\/fi\/product\/balanset-1\/\" title=\"Kannettava tasapainotin ja t\u00e4rin\u00e4analysaattori Balanset-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 kannettava tasapainotin ja v\u00e4r\u00e4htelyanalysaattori, t\u00e4ydellinen sarja\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/product\/balanset-1\/\" title=\"Kannettava tasapainotin ja t\u00e4rin\u00e4analysaattori Balanset-1A\">Kannettava tasapainotin &#038; t\u00e4rin\u00e4analysaattori Balanset-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\">&euro;<\/span>1,975.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/vibration-sensor\/\" title=\"T\u00e4rin\u00e4anturi\">\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:n t\u00e4rin\u00e4anturin l\u00e4hikuva\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/vibration-sensor\/\" title=\"T\u00e4rin\u00e4anturi\">T\u00e4rin\u00e4anturi<\/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\">&euro;<\/span>90.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optinen anturi (lasertakometri)\">\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=\"Optinen anturi (lasertakometri)\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optinen anturi (lasertakometri)\">Optinen anturi (lasertakometri)<\/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\">&euro;<\/span>124.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/balanset-4\/\" title=\"Balanset-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-roottorin tasapainotussarja: kantolaukku, monikanavainen signaalimuunnin, k\u00e4dess\u00e4 pidett\u00e4v\u00e4 analysaattori, magneettijalusta, t\u00e4rin\u00e4anturit ja kierretyt kaapelit.\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-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\">&euro;<\/span>6,803.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/magnet-stand\/\" title=\"Magneettinen jalusta Insize-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=\"Magneettipohja.\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/magnet-stand\/\" title=\"Magneettinen jalusta Insize-60-kgf\">Magneettinen jalusta Insize-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\">&euro;<\/span>46.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/reflective-tape\/\" title=\"Heijastava nauha\">\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=\"Heijastava nauha\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/reflective-tape\/\" title=\"Heijastava nauha\">Heijastava nauha<\/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\">&euro;<\/span>10.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Lis\u00e4\u00e4 ostoskoriin: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" 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\/fi\/product\/dynamic-balancer-balanset-1a\/\" 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\/fi\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynaaminen tasapainotin &quot;Balanset-1A&quot; OEM\">\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\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A-pakkauksen sis\u00e4lt\u00f6, jossa on liit\u00e4nt\u00e4yksikk\u00f6, anturit, kierroslukumittari ja lis\u00e4varusteet\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynaaminen tasapainotin &quot;Balanset-1A&quot; OEM\">Dynaaminen tasapainotin \"Balanset-1A\" OEM<\/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\">&euro;<\/span>1,735.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/63?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Lis\u00e4\u00e4 ostoskoriin: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" 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>Rikkoutuneet roottorin tangot<\/strong> ovat induktiomoottorin h\u00e4kkik\u00e4\u00e4min johtimien t\u00e4ydelliset murtumat. Tilanne on olennaisesti sama kuin <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/rotor-bar-defects\/\">roottorisauvan vika<\/a>, mutta termi viittaa pikemminkin t\u00e4ydelliseen katkeamiseen kuin halkeamaan tai eritt\u00e4in kest\u00e4v\u00e4\u00e4n liitokseen. Kun yksi tai useampi tanko katkeaa, virta ei voi en\u00e4\u00e4 kulkea niiden l\u00e4pi, ja t\u00e4st\u00e4 johtuva s\u00e4hk\u00f6magneettinen ep\u00e4symmetria aiheuttaa tunnusomaisen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/vibration\/\">t\u00e4rin\u00e4<\/a> ja virtasignatuurit \u2014 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/sidebands\/\">sivunauhat<\/a> v\u00e4liss\u00e4 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/pole-pass-frequency\/\">napaohitustaajuus<\/a> (napojen lukum\u00e4\u00e4r\u00e4 \u00d7 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/slip-frequency\/\">liukumataajuus<\/a>) around the <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/running-speed\/\">k\u00e4yntinopeus<\/a>.<\/p>\n<p>Rikkoutuneet tangot ovat erityisen vaarallisia, koska ne pett\u00e4v\u00e4t ketjureaktiona. Yhden tangon rikkoutuminen aiheuttaa ylim\u00e4\u00e4r\u00e4ist\u00e4 virtaa ja rasitusta viereisiin tankoihin, jotka puolestaan alkavat pett\u00e4\u00e4 vuorollaan. Jos vika havaitaan varhaisessa vaiheessa \u2013 kun vain yksi tanko on rikkoutunut \u2013 moottori voi toimia kuukausia valvonnan alaisena; jos vika j\u00e4\u00e4 huomaamatta, se voi laajentua useiden tankojen rikkoutumiseen ja johtaa roottorin katastrofaaliseen vikaantumiseen, joka edellytt\u00e4\u00e4 moottorin vaihtamista.<\/p>\n<h2>1. Miten roottorin tangot murtuvat<\/h2>\n<h3>L\u00e4mp\u00f6v\u00e4symys (yleisin)<\/h3>\n<p>Toistuvat l\u00e4mmitys- ja j\u00e4\u00e4hdytysjaksot ovat t\u00e4rkein syy, ja mekanismia kannattaa seurata vaihe vaiheelta:<\/p>\n<ul>\n<li><strong>K\u00e4ynnistysvirta:<\/strong> k\u00e4ynnistyksen aikana roottoriin kohdistuu 5\u20137-kertainen normaali virta, kun roottori on jumissa.<\/li>\n<li><strong>L\u00e4mp\u00f6laajeneminen:<\/strong> alumiinipalkit laajenevat voimakkaasti, laajenemiskertoimen ollessa noin 23 \u00b5m\/m\/\u00b0C.<\/li>\n<li><strong>Rajoitus:<\/strong> rautaydin laajenee huomattavasti v\u00e4hemm\u00e4n (noin 12 \u00b5m\/m\/\u00b0C), mik\u00e4 rajoittaa tankojen liikkumista.<\/li>\n<li><strong>Rasitus:<\/strong> T\u00e4m\u00e4 ep\u00e4tasainen laajeneminen aiheuttaa tankoihin suuria l\u00e4mp\u00f6j\u00e4nnityksi\u00e4.<\/li>\n<li><strong>V\u00e4symys:<\/strong> toistuvat k\u00e4ynnistysjaksot aiheuttavat v\u00e4h\u00e4jaksoista <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/fatigue\/\">v\u00e4symys<\/a>.<\/li>\n<li><strong>Halkeaman synty:<\/strong> halkeamat alkavat yleens\u00e4 tangon ja p\u00e4\u00e4tyrenkaan liitoskohdasta, joka on suurimman rasituksen kohdassa.<\/li>\n<\/ul>\n<h3>Mekaaninen rasitus<\/h3>\n<ul>\n<li><a href=\"https:\/\/vibromera.eu\/fi\/glossary\/centrifugal-force\/\">Keskipakoisvoimat<\/a> suurella nopeudella.<\/li>\n<li>S\u00e4hk\u00f6magneettiset voimat k\u00e4ynnin ja l\u00e4hd\u00f6n aikana.<\/li>\n<li>Ulkoisista l\u00e4hteist\u00e4 v\u00e4littyv\u00e4 t\u00e4rin\u00e4.<\/li>\n<li>Iskukuormitus k\u00e4ynnistyksen yhteydess\u00e4 tai \u00e4killiset kuormitusmuutokset.<\/li>\n<\/ul>\n<h3>Valmistusvirheet<\/h3>\n<ul>\n<li><strong>Huokoisuus:<\/strong> valualumiinisten roottorien ontelot.<\/li>\n<li><strong>Heikko tartunta:<\/strong> riitt\u00e4m\u00e4t\u00f6n tartunta tangon ja ytimen v\u00e4lill\u00e4.<\/li>\n<li><strong>Aineelliset sulkeumat:<\/strong> valukappaleeseen j\u00e4\u00e4neet ep\u00e4puhtaudet.<\/li>\n<li><strong>Heikot p\u00e4\u00e4tyrenkaiden liitokset:<\/strong> heikot liitokset tangon ja p\u00e4\u00e4tyrenkaan v\u00e4lill\u00e4.<\/li>\n<\/ul>\n<h3>K\u00e4ytt\u00f6olosuhteet<\/h3>\n<ul>\n<li><strong>Toistuva k\u00e4ynnist\u00e4minen:<\/strong> Jokainen k\u00e4ynnistys aiheuttaa l\u00e4mp\u00f6- ja mekaanista rasitusta.<\/li>\n<li><strong>Suuriinertiset kuormat:<\/strong> Pitk\u00e4t kiihdytysajat pident\u00e4v\u00e4t tangon rasitusta.<\/li>\n<li><strong>Vastakytkent\u00e4k\u00e4ytt\u00f6:<\/strong> vastakytkent\u00e4jarrutus aiheuttaa eritt\u00e4in suuria virtoja.<\/li>\n<li><strong>Yksivaiheinen:<\/strong> Jos moottoria k\u00e4ytet\u00e4\u00e4n yhden vaiheen puuttuessa, j\u00e4ljell\u00e4 olevat roottorin tangot ylikuormittuvat.<\/li>\n<\/ul>\n<h2>2. Tyypillinen sivukaistakuvio<\/h2>\n<h3>Miksi sivunauhat ilmestyv\u00e4t<\/h3>\n<p>T\u00e4m\u00e4 tyypillinen oirekuva johtuu selke\u00e4st\u00e4 syy-seuraussuhteesta:<\/p>\n<ol>\n<li>Rikkoutunut tanko ei voi johtaa virtaa, mik\u00e4 aiheuttaa s\u00e4hk\u00f6isen ep\u00e4symmetrian roottorissa.<\/li>\n<li>T\u00e4m\u00e4 ep\u00e4symmetria laahaa py\u00f6riv\u00e4n kent\u00e4n per\u00e4ss\u00e4 j\u00e4tt\u00f6taajuudella f<sub>s<\/sub> \u2014 synkronisen nopeuden ja roottorin nopeuden v\u00e4linen ero, Hz.<\/li>\n<li>Se synnytt\u00e4\u00e4 v\u00e4\u00e4nt\u00f6momentin sykkimisen napataajuudella F<sub>P<\/sub> = napojen lukum\u00e4\u00e4r\u00e4 \u00d7 f<sub>s<\/sub> \u2014 equivalently twice the per-unit slip times the line frequency (2\u00b7s\u00b7f<sub>linja<\/sub>).<\/li>\n<li>V\u00e4\u00e4nt\u00f6momentin v\u00e4r\u00e4htely moduloi tavallisesta mekaanisesta ep\u00e4tasapainosta johtuvaa 1\u00d7-taajuista v\u00e4r\u00e4htely\u00e4.<\/li>\n<li>Tuloksena ovat sivukaistat, jotka sijaitsevat py\u00f6rimisnopeuden ymp\u00e4rill\u00e4 \u00b1 napataajuuden v\u00e4lein.<\/li>\n<\/ol>\n<h3>V\u00e4r\u00e4htelykuvio<\/h3>\n<ul>\n<li><strong>Keskushuippu:<\/strong> 1\u00d7 py\u00f6rimisnopeus (f<sub>r<\/sub>).<\/li>\n<li><strong>Alempi sivukaista:<\/strong> f<sub>r<\/sub> \u2212 F<sub>P<\/sub> (where F<sub>P<\/sub> = poles \u00d7 f<sub>s<\/sub> on napataajuus).<\/li>\n<li><strong>Ylempi sivukaista:<\/strong> f<sub>r<\/sub> + F<sub>P<\/sub>.<\/li>\n<li><strong>Useita sivukaistoja:<\/strong> f<sub>r<\/sub> \u00b1 2F<sub>P<\/sub>, f<sub>r<\/sub> \u00b1 3F<sub>P<\/sub> vaikeusasteen kasvaessa.<\/li>\n<li><strong>Symmetria:<\/strong> sivukaistat sijaitsevat symmetrisesti 1\u00d7-huipun ymp\u00e4rill\u00e4.<\/li>\n<\/ul>\n<h3>K\u00e4yt\u00e4nn\u00f6n esimerkki<\/h3>\n<p>4-napainen, 60 Hz:n moottori t\u00e4ydell\u00e4 kuormituksella:<\/p>\n<ul>\n<li>Synkroninen kierrosluku: 1800 r\/min.<\/li>\n<li>Todellinen kierrosluku: 1750 r\/min (29,17 Hz).<\/li>\n<li>J\u00e4tt\u00e4m\u00e4: 50 RPM, joten j\u00e4tt\u00f6taajuus f<sub>s<\/sub> = 50\/60 = 0.833 Hz.<\/li>\n<li>Napataajuus: F<sub>P<\/sub> = 4 poles \u00d7 0.833 Hz = 3.33 Hz.<\/li>\n<li><strong>T\u00e4rin\u00e4huiput:<\/strong> 25.8 Hz, 29.17 Hz and 32.5 Hz.<\/li>\n<li>Katkennut sauva varmistuu symmetristen sivukaistojen perusteella taajuudella \u00b13.33 Hz.<\/li>\n<\/ul>\n<p>Koska liukutaajuus on t\u00e4m\u00e4n mallin perusta, kannattaa laskea se tarkasti kyseiselle moottorille; <a href=\"https:\/\/vibromera.eu\/fi\/calculators\/motor-slip-calculator\/\">Moottorin luisto &amp; todellisen kierrosluvun laskuri<\/a> t\u00e4m\u00e4 tapahtuu suoraan tyyppikilven tietojen perusteella.<\/p>\n<h2>3. Virran signatuurianalyysi (MCSA)<\/h2>\n<p>Moottorin virran analyysi paljastaa l\u00e4heisesti toisiinsa liittyv\u00e4n kuvion <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/electrical-frequency\/\">linjataajuus<\/a>:<\/p>\n<ul>\n<li><strong>Keskushuippu:<\/strong> verkkovirran taajuus (50 tai 60 Hz).<\/li>\n<li><strong>Sivunauhat:<\/strong> f<sub>linja<\/sub> \u00b1 2\u00b7s\u00b7f<sub>linja<\/sub>, jossa s on liukuma per-unit-muodossa \u2014 sama \u00b1F<sub>P<\/sub> spacing as in vibration, because 2\u00b7s\u00b7f<sub>linja<\/sub> vastaa napataajuutta.<\/li>\n<li><strong>Esimerkki:<\/strong> the 4-pole motor above (s = 50\/1800 \u2248 2.8%) shows sidebands at 60 \u00b1 3.33 Hz \u2014 that is, at 56.7 Hz and 63.3 Hz.<\/li>\n<li><strong>Etu:<\/strong> ei-invasiivinen ja sopii hyvin jatkuvaan seurantaan.<\/li>\n<li><strong>Herkkyys:<\/strong> havaitsee usein katkenneet tangot aikaisemmin kuin t\u00e4rin\u00e4oireet. <a href=\"https:\/\/vibromera.eu\/fi\/calculators\/motor-electrical-frequencies\/\">Moottorin s\u00e4hk\u00f6vikojen taajuuslaskuri<\/a> ennustaa juuri n\u00e4m\u00e4 virran sivukaistat.<\/li>\n<\/ul>\n<h2>4. Kehitysvaiheet<\/h2>\n<h3>Yksi rikkin\u00e4inen sauva<\/h3>\n<ul>\n<li>N\u00e4kyviin tulee pieni\u00e4 sivukaistoja, joiden voimakkuus on noin 20\u201340 % 1\u00d7-huipun voimakkuudesta.<\/li>\n<li>Liev\u00e4 v\u00e4\u00e4nt\u00f6momentin heilahtelu, jota ei useinkaan huomaa.<\/li>\n<li>Moottorin suorituskyky on l\u00e4hes normaali.<\/li>\n<li>Moottori voi toimia kuukausia valvonnan alaisena.<\/li>\n<li>Vaihto on kuitenkin syyt\u00e4 suunnitella etuk\u00e4teen.<\/li>\n<\/ul>\n<h3>Useita vierekk\u00e4isi\u00e4 rikkoutuneita sauvoja<\/h3>\n<ul>\n<li>Voimakkaat sivukaistat, yli 50 % 1\u00d7-huipun voimakkuudesta.<\/li>\n<li>Selv\u00e4 v\u00e4\u00e4nt\u00f6momentin heilahtelu.<\/li>\n<li>Luiston ja l\u00e4mp\u00f6tilan nousu.<\/li>\n<li>Eteneminen kiihtyy, kun viereiset sauvat ylikuumenevat.<\/li>\n<li>Vaihto on teht\u00e4v\u00e4 kiireellisesti \u2013 kyse on viikoista.<\/li>\n<\/ul>\n<h3>Vakava tila<\/h3>\n<ul>\n<li>Sivukaistat voivat ylitt\u00e4\u00e4 1\u00d7 huippuamplitudin.<\/li>\n<li>Voimakas v\u00e4\u00e4nt\u00f6momentin v\u00e4r\u00e4htely, joka v\u00e4littyy k\u00e4ytt\u00f6laitteisiin.<\/li>\n<li>Voimakas t\u00e4rin\u00e4 ja korkea l\u00e4mp\u00f6tila.<\/li>\n<li>P\u00e4\u00e4tyrenkaan rikkoutumisen tai roottorin t\u00e4ydellisen rikkoutumisen vaara.<\/li>\n<li>V\u00e4lit\u00f6n korvaaminen on tarpeen.<\/li>\n<\/ul>\n<h2>5. Tunnistaminen kent\u00e4ll\u00e4<\/h2>\n<h3>T\u00e4rin\u00e4analyysi<\/h3>\n<p>Ratkaiseva haaste on resoluutio: sivukaistat sijaitsevat vain muutaman hertsin p\u00e4\u00e4ss\u00e4 1\u00d7-huipusta (napataajuuden et\u00e4isyydell\u00e4, tyypillisesti 1\u20134 Hz), joten analysaattorin on erotettava ne selke\u00e4sti.<\/p>\n<ul>\n<li>K\u00e4yt\u00e4 korkean resoluution <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/fft\/\">FFT<\/a> \u2014 yli 0,2 Hz:n erottelukyky \u2014 sivukaistojen erottamiseksi; <a href=\"https:\/\/vibromera.eu\/fi\/calculators\/fft-resolution-calculator\/\">FFT-resoluutiolaskuri<\/a> auttaa sinua valitsemaan rivim\u00e4\u00e4r\u00e4n ja riviv\u00e4lin.<\/li>\n<li>Testaa moottori kuormitettuna, sill\u00e4 sivukaistat voimistuvat virran kasvaessa.<\/li>\n<li>Laske moottorin odotettu j\u00e4tt\u00e4m\u00e4 ja napataajuus etuk\u00e4teen.<\/li>\n<li>Etsi <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/spectrum\/\">spektri<\/a> symmetrisi\u00e4 sivukaistoja kohdassa \u00b1F<sub>P<\/sub> 1\u00d7-huipun ymp\u00e4rill\u00e4.<\/li>\n<li>Piirr\u00e4 sivukaistan amplitudin kehitys ajan funktiona.<\/li>\n<\/ul>\n<p>T\u00e4m\u00e4 teht\u00e4v\u00e4 on t\u00e4ysin kannettavan laitteen ulottuvilla. Kaksikanavainen analysaattori, kuten <a href=\"https:\/\/vibromera.eu\/fi\/tuote\/balanset-1\/\">Balanset-1A<\/a> captures the vibration spectrum at the motor bearing while its optical laser tachometer reads true shaft speed, letting you fix the precise 1\u00d7 frequency, compute the slip, and look for the pole-pass-spaced sidebands that confirm broken bars \u2014 all with the motor running under its normal load. Because the same instrument also measures 1\u00d7 amplitude and phase, it cleanly separates a genuine rotor-bar signature from a simple <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/running-speed\/\">ajonopeus<\/a> ep\u00e4tasapaino, joka edellytt\u00e4isi tasapainotusta roottorin vaihtamisen sijaan.<\/p>\n<h3>MCSA-testaus<\/h3>\n<ul>\n<li>Kiinnit\u00e4 virtamittap\u00e4\u00e4t moottorin johtimiin.<\/li>\n<li>Hanki virran aaltomuoto ja laske sen FFT.<\/li>\n<li>Etsi sivukaistoja taajuudella f<sub>linja<\/sub> \u00b1 2\u00b7s\u00b7f<sub>linja<\/sub> (that is, f<sub>linja<\/sub> \u00b1 F<sub>P<\/sub>).<\/li>\n<li>Vertaa terveen moottorin vertailuarvoon.<\/li>\n<li>T\u00e4m\u00e4 voi paljastaa ongelman jo ennen kuin t\u00e4rin\u00e4\u00e4 koskevat oireet tulevat selv\u00e4sti esiin.<\/li>\n<\/ul>\n<h2>6. Korjaavat toimenpiteet<\/h2>\n<h3>V\u00e4lit\u00f6n vastaus<\/h3>\n<ul>\n<li>Lis\u00e4\u00e4 seurannan tiheytt\u00e4 \u2013 ensin kuukausittain, sitten viikoittain ja lopulta p\u00e4ivitt\u00e4in.<\/li>\n<li>Seuraa sivukaistan amplitudin kasvuvauhtia <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/trend-analysis\/\">trendianalyysi<\/a>.<\/li>\n<li>Tilaa varamoottori tai suunnittele roottorin vaihto.<\/li>\n<li>V\u00e4henn\u00e4 k\u00e4ytt\u00f6jaksoa mahdollisuuksien mukaan ja minimoi k\u00e4ynnistykset.<\/li>\n<li>Dokumentoi vian eteneminen vikaanalyysi\u00e4 varten.<\/li>\n<\/ul>\n<h3>Korjausvaihtoehdot<\/h3>\n<ul>\n<li><strong>Roottorin vaihto:<\/strong> luotettavin valinta suurille moottoreille (yli 100 hv).<\/li>\n<li><strong>Roottorin uudelleenvalaminen:<\/strong> erikoiskorjaamot voivat valaa alumiiniroottoreita uudelleen.<\/li>\n<li><strong>Moottorin vaihto:<\/strong> usein edullisin vaihtoehto pienille moottoreille (alle 50 hv).<\/li>\n<li><strong>Perussyiden selvitt\u00e4minen:<\/strong> selvitt\u00e4\u00e4, miksi tangot murtuivat, jotta tilanne ei toistuisi.<\/li>\n<\/ul>\n<h3>Ennaltaehk\u00e4isy<\/h3>\n<ul>\n<li>K\u00e4yt\u00e4 pehmok\u00e4ynnistimi\u00e4 tai taajuusmuuttajia k\u00e4ynnistysvirran ja l\u00e4mp\u00f6kuormituksen v\u00e4hent\u00e4miseksi.<\/li>\n<li>Rajoita k\u00e4ynnistystaajuutta suurinertiaisten kuormien kohdalla.<\/li>\n<li>Valitse moottorit, jotka on mitoitettu todellista k\u00e4ytt\u00f6jaksoa varten \u2013 usein k\u00e4ynnistyv\u00e4\u00e4n k\u00e4ytt\u00f6\u00f6n tarkoitetut mallit, jos k\u00e4ytt\u00f6jakso on tihe\u00e4.<\/li>\n<li>Varmista moottorin riitt\u00e4v\u00e4 ilmanvaihto ja j\u00e4\u00e4hdytys.<\/li>\n<li>Suojaa yksivaiheisilta tilanteilta.<\/li>\n<\/ul>\n<p>Rikkoutuneet roottorin tangot muodostavat vain noin 10\u201315 % <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/motor-defects\/\">moottoriviat<\/a>, mutta ne j\u00e4tt\u00e4v\u00e4t kiistattoman napataajuuden sivukaista-allekirjoituksen, joka tukee luotettavaa varhaista havaitsemista v\u00e4r\u00e4htelyn tai virta-analyysin avulla. L\u00e4mp\u00f6v\u00e4symismekanismin ymm\u00e4rt\u00e4minen, tunnusomaisen sivukaistakuvion tunnistaminen ja tarkastusten sis\u00e4llytt\u00e4minen osaksi <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/condition-monitoring\/\">kunnonvalvonta<\/a> ohjelman avulla moottori voidaan vaihtaa suunnitelmallisesti \u2013 ennen kuin yhden tangon murtuminen aiheuttaa useiden tangojen rikkoutumisen ja pitkittyneen suunnittelemattoman seisokin.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/fi\/glossary\/\">\u2190 Takaisin p\u00e4\u00e4hakemistoon<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Opi oikosulkumoottoreiden roottoritankojen rikkoutumisista, murtuneista johdintangoista, jotka aiheuttavat liukumistaajuussivukaistoja, v\u00e4\u00e4nt\u00f6momentin pulsseista ja asteittaisista vioista, jos niit\u00e4 ei havaita ajoissa.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-63","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/63","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/63\/revisions"}],"predecessor-version":[{"id":102161,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/63\/revisions\/102161"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/media?parent=63"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/categories?post=63"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/tags?post=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}