{"id":197,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/pole-pass-frequency\/"},"modified":"2026-07-02T18:51:35","modified_gmt":"2026-07-02T18:51:35","slug":"pole-pass-frequency","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/da\/glossary\/pole-pass-frequency\/","title":{"rendered":"Hvad er polpassagefrekvens? Motorens elektromagnetiske kr\u00e6fter"},"content":{"rendered":"<h1>Forst\u00e5else af polpassagefrekvens<\/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\/da\/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\/da\/product\/balanset-1\/\" title=\"B\u00e6rbart afbalanceringsapparat og vibrationsanalysator 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 komplet s\u00e6t med b\u00e6rbar afbalanceringsenhed og vibrationsanalysator\" 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\/da\/product-category\/devices\/\" rel=\"tag\">Enheder<\/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\/da\/product\/balanset-1\/\" title=\"B\u00e6rbart afbalanceringsapparat og vibrationsanalysator Balanset-1A\">B\u00e6rbart afbalanceringsapparat og vibrationsanalysator 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\">\u20ac<\/span>1,975.00<\/span> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"L\u00e6g i kurv: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">\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 vibrationssensor i n\u00e6rbillede\" 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\/da\/product-category\/parts\/\" rel=\"tag\">Dele<\/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\/da\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">Vibrationssensor<\/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> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"L\u00e6g i kurv: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (laser-tachometer)\">\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=\"Optisk sensor (laser-tachometer)\" 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\/da\/product-category\/parts\/\" rel=\"tag\">Dele<\/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\/da\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (laser-tachometer)\">Optisk sensor (laser-tachometer)<\/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> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"L\u00e6g i kurv: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/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 rotorbalanceringss\u00e6t: b\u00e6retaske, flerkanals signalbehandler, h\u00e5ndholdt analysator, magnetisk base, vibrationssensorer og spiralkabler.\" 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\/da\/product-category\/devices\/\" rel=\"tag\">Enheder<\/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\/da\/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\">\u20ac<\/span>6,803.00<\/span> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"L\u00e6g i kurv: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/product\/magnet-stand\/\" title=\"Magnetisk stativ 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=\"Magnetbase.\" 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, 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src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Reflekterende tape\" 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\/da\/product-category\/parts\/\" rel=\"tag\">Dele<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 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href=\"https:\/\/vibromera.eu\/da\/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\/da\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balancer &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-s\u00e6t med interface-enhed, sensorer, omdrejningst\u00e6ller og tilbeh\u00f8r\" 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\/da\/product-category\/devices\/\" rel=\"tag\">Enheder<\/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\/da\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balancer &quot;Balanset-1A&quot; OEM\">Dynamisk balancer \"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\">\u20ac<\/span>1,735.00<\/span> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/197?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=\"L\u00e6g i kurv: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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>Polpassagefrekvens<\/strong> (PPF) er den lavfrekvente <a href=\"https:\/\/vibromera.eu\/da\/glossary\/vibration\/\">vibrationer<\/a> komponent, der opst\u00e5r i en AC-induktionsmotor, n\u00e5r det roterende magnetfelt glider forbi rotoren. Den beregnes som antallet af poler multipliceret med <a href=\"https:\/\/vibromera.eu\/da\/glossary\/slip-frequency\/\">slipfrekvens<\/a>: PPF = antal poler \u00d7 (synkronhastighed \u2212 faktisk hastighed) \/ 60. Fordi slip er lille, er PPF en meget lav frekvens \u2014 typisk kun f\u00e5 hertz \u2014 og den viser sig normalt ikke som en selvst\u00e6ndig top, men som <a href=\"https:\/\/vibromera.eu\/da\/glossary\/sidebands\/\">sideb\u00e5nd<\/a> sideb\u00e5nd med PPF-afstand omkring omdrejningshastigheds- og netfrekvenskomponenterne. Denne sliprelaterede modulation forst\u00e6rkes kraftigt, n\u00e5r motoren har <a href=\"https:\/\/vibromera.eu\/da\/glossary\/air-gap\/\">luftspalte<\/a> ekscentricitet, br\u00e6kkede rotorst\u00e6nger eller et rotor-til-stator-justeringsproblem. Derfor er PPF et af de mest nyttige v\u00e6rkt\u00f8jer til at skelne mellem <a href=\"https:\/\/vibromera.eu\/da\/glossary\/electrical-faults\/\">elektriske fejl<\/a> fra rent mekaniske.<\/p>\n<p>PPF er diagnostisk vigtig, fordi forh\u00f8jede <a href=\"https:\/\/vibromera.eu\/da\/glossary\/sidebands\/\">sideb\u00e5nd<\/a> sideb\u00e5nd med denne frekvensafstand entydigt peger p\u00e5 et elektromagnetisk problem \u2014 en ekscentrisk rotor, br\u00e6kkede rotorst\u00e6nger, en uj\u00e6vn luftspalte eller dynamisk rotor\u2013stator-interaktion \u2014 snarere end p\u00e5 <a href=\"https:\/\/vibromera.eu\/da\/glossary\/unbalance\/\">ubalance<\/a> eller <a href=\"https:\/\/vibromera.eu\/da\/glossary\/misalignment\/\">fejljustering<\/a>. L\u00e6st korrekt fort\u00e6ller det analytikeren, om motoren skal \u00e5bnes, eller om der skal kigges andetsteds p\u00e5 drevlinjen.<\/p>\n<h2>1. Beregning af Pole Pass Frequency<\/h2>\n<h3>Den grundl\u00e6ggende formel<\/h3>\n<ul>\n<li><strong>PPF = P \u00d7 (N<sub>synkronisering<\/sub> \u2212 N) \/ 60<\/strong><\/li>\n<li>hvor <strong>P<\/strong> = antal poler,<\/li>\n<li><strong>N<sub>synkronisering<\/sub><\/strong> = synkronhastighed i RPM (N<sub>synkronisering<\/sub> = 120 \u00d7 netfrekvens \/ P),<\/li>\n<li><strong>N<\/strong> = aktuelt rotoromdrejningstal i RPM,<\/li>\n<li>og resultatet er i Hz. Udtrykket (N<sub>synkronisering<\/sub> \u2212 N) \/ 60 er slipfrekvensen udtrykt i Hz.<\/li>\n<\/ul>\n<p>Bem\u00e6rk, at PPF er baseret p\u00e5 <em>difference<\/em> forskellen mellem synkronhastighed og faktisk hastighed \u2014 det vil sige <a href=\"https:\/\/vibromera.eu\/da\/glossary\/slip-frequency\/\">slip<\/a>. Uden belastning k\u00f8rer en induktionsmotor n\u00e6sten med synkronhastighed, s\u00e5 PPF n\u00e6rmer sig nul; n\u00e5r belastningen \u00f8ges, stiger slippen og dermed PPF, typisk til cirka 0.5\u20133.5 Hz ved m\u00e6rkebelastning. Forveksl ikke PPF med den rent mekaniske orden P \u00d7 omdrejningshastighed (for en 4-polet motor ved 1750 RPM er det cirka 116.7 Hz) \u2014 det er en harmonisk af akselrotationen, ikke pole pass frequency. N\u00e5r du hurtigt skal omregne omdrejningshastighed til en familie af ordener, er vores <a href=\"https:\/\/vibromera.eu\/da\/calculators\/harmonic-frequency-calculator\/\">Harmonisk frekvensberegner<\/a> turns RPM into Hz across the 1\u00d7\u201310\u00d7 orders, and the <a href=\"https:\/\/vibromera.eu\/da\/calculators\/motor-electrical-frequencies\/\">Motor elektrisk defektfrekvensberegner<\/a> viser de elektromagnetiske frekvenser side ved side.<\/p>\n<h3>Gennemarbejdede eksempler<\/h3>\n<p><strong>4-polet motor ved 1750 RPM (60 Hz forsyning):<\/strong><\/p>\n<ul>\n<li>Synkronhastighed N<sub>synkronisering<\/sub> = 120 \u00d7 60 \/ 4 = 1800 RPM.<\/li>\n<li>Slip frequency = (1800 \u2212 1750) \/ 60 = 0.83 Hz.<\/li>\n<li><strong>PPF = 4 \u00d7 (1800 \u2212 1750) \/ 60 = 3.33 Hz<\/strong><\/li>\n<li>I vibrations- <a href=\"https:\/\/vibromera.eu\/da\/glossary\/spectrum\/\">spektrum<\/a> it appears as sidebands spaced \u00b13.33 Hz around the 1\u00d7 running-speed peak (29.2 Hz) and around 2\u00d7 line frequency (120 Hz) \u2014 a pattern diagnostic for eccentricity and broken rotor bars.<\/li>\n<\/ul>\n<p><strong>6-polet motor ved 970 RPM (50 Hz forsyning):<\/strong><\/p>\n<ul>\n<li>Synkronhastighed N<sub>synkronisering<\/sub> = 120 \u00d7 50 \/ 6 = 1000 RPM.<\/li>\n<li>Slip frequency = (1000 \u2212 970) \/ 60 = 0.5 Hz.<\/li>\n<li><strong>PPF = 6 \u00d7 (1000 \u2212 970) \/ 60 = 3.0 Hz<\/strong><\/li>\n<li>Sidebands spaced only \u00b13.0 Hz around the 1\u00d7 peak (16.2 Hz) or around 2\u00d7 line frequency (100 Hz) are easy to miss.<\/li>\n<li>Opl\u00f8sning af dem kr\u00e6ver omhyggelig, h\u00f8jopl\u00f8selig <a href=\"https:\/\/vibromera.eu\/da\/glossary\/spectral-analysis\/\">spektralanalyse<\/a>.<\/li>\n<\/ul>\n<h2>2. Den fysiske mekanisme<\/h2>\n<h3>Hvordan den elektromagnetiske kraft genereres<\/h3>\n<p>Begivenhedsk\u00e6den, der skaber PPF, er ligetil:<\/p>\n<ol>\n<li>Statorviklingerne skaber et magnetfelt, der roterer med synkronhastighed.<\/li>\n<li>Det felt er organiseret i magnetiske poler i et N\u2013S\u2013N\u2013S m\u00f8nster.<\/li>\n<li>Rotoren k\u00f8rer en smule langsommere p\u00e5 grund af slip, s\u00e5 feltpolerne driver hele tiden forbi rotoren i stedet for at forblive l\u00e5st til den.<\/li>\n<li>Hver gang en feltpol glider forbi et givent punkt p\u00e5 rotoren (en stang med h\u00f8j modstand, en ekscentrisk side af luftspalten), moduleres den magnetiske kraft, der virker p\u00e5 dette punkt.<\/li>\n<li>With <strong>P<\/strong> poler, passeres dette punkt <strong>P<\/strong> gange pr. slipcyklus.<\/li>\n<li>Frekvensen af den resulterende modulation er derfor P \u00d7 slipfrekvens = PPF \u2014 et langsomt &#8220;beat&#8221; oven p\u00e5 vibration ved omdrejningshastighed og netfrekvens.<\/li>\n<\/ol>\n<h3>Ensartet luftgab \u2014 en sund motor<\/h3>\n<ul>\n<li>Rotoren er centreret i statorboringen.<\/li>\n<li>Luftgabet er ensartet omkring hele omkredsen.<\/li>\n<li>De magnetiske kr\u00e6fter er afbalancerede og oph\u00e6ver hinanden.<\/li>\n<li>PPF-relateret modulation er derfor meget lav i amplitude.<\/li>\n<\/ul>\n<h3>Excentrisk luftgab \u2014 en defekt motor<\/h3>\n<ul>\n<li>Rotoren sidder off-center fra <a href=\"https:\/\/vibromera.eu\/da\/glossary\/bearing-wear\/\">slid p\u00e5 lejer<\/a>, en <a href=\"https:\/\/vibromera.eu\/da\/glossary\/bent-shaft\/\">B\u00f8jet aksel<\/a>eller en fremstillingsfejl.<\/li>\n<li>Luftgabet er mindre p\u00e5 den ene side og st\u00f8rre p\u00e5 den modsatte.<\/li>\n<li>De magnetiske kr\u00e6fter bliver uafbalancerede \u2014 st\u00e6rkere hvor gabet er mindre.<\/li>\n<li>Der opst\u00e5r en netto radialkraft \u2014 <a href=\"https:\/\/vibromera.eu\/da\/glossary\/magnetic-pull\/\">ubalanceret magnetisk tiltr\u00e6kning<\/a> \u2014 og den moduleres ved PPF, n\u00e5r feltpolerne glider forbi den smalle side af luftspalten.<\/li>\n<li>Sideb\u00e5nd med PPF-afstand udvikles omkring de vigtigste spektrale toppe og vokser med fejlens alvorlighed.<\/li>\n<\/ul>\n<h2>3. Sidebands og diagnostiske m\u00f8nstre<\/h2>\n<h3>Statisk excentricitet<\/h3>\n<p>Her er rotoraksen forskudt, men station\u00e6r i forhold til stator:<\/p>\n<ul>\n<li><strong>M\u00f8nster:<\/strong> en forh\u00f8jet 2\u00d7 netfrekvenskomponent (100\/120 Hz); pole-pass-sideb\u00e5nd er svage eller frav\u00e6rende, fordi forskydningen ikke roterer med akslen.<\/li>\n<li><strong>\u00c5rsag:<\/strong> lejeslid, deformation af stel eller endeskjold eller en bearbejdningsfejl i statorboringen.<\/li>\n<li><strong>Amplitude:<\/strong> amplituden ved 2\u00d7 netfrekvens angiver ekscentricitetens alvorlighed.<\/li>\n<\/ul>\n<h3>Dynamisk excentricitet<\/h3>\n<p>Her kredsler rotorcentret omkring statorcentret:<\/p>\n<ul>\n<li><strong>M\u00f8nster:<\/strong> 1\u00d7 running speed and 2\u00d7 line frequency peaks with sidebands spaced at PPF (e.g. \u00b13.33 Hz in the 4-pole example above).<\/li>\n<li><strong>\u00c5rsager:<\/strong> en b\u00f8jet aksel, rotor <a href=\"https:\/\/vibromera.eu\/da\/glossary\/rotor-eccentricity\/\">excentricitet<\/a>, rotor-til-stator <a href=\"https:\/\/vibromera.eu\/da\/glossary\/rotor-rub\/\">rub<\/a> or bearing <a href=\"https:\/\/vibromera.eu\/da\/glossary\/looseness\/\">l\u00f8shed<\/a>.<\/li>\n<li><strong>More severe:<\/strong> it signals an active dynamic interaction rather than a fixed offset. The same pole-pass sideband family around 1\u00d7 and its harmonics is the classic signature of broken rotor bars.<\/li>\n<\/ul>\n<h3>Blandet excentricitet<\/h3>\n<ul>\n<li>En kombination af statiske og dynamiske effekter.<\/li>\n<li>Dette er den mest almindelige tilstand i rigtige motorer.<\/li>\n<li>Det frembringer komplekse sideb\u00e5ndsm\u00f8nstre.<\/li>\n<li>Omhyggelig analyse er n\u00f8dvendig for at fortolke det korrekt.<\/li>\n<\/ul>\n<h2>4. Diagnostisk fortolkning<\/h2>\n<p>Because PPF is only a few hertz, it is judged through the strength of its sidebands around the 1\u00d7 running-speed and 2\u00d7 line-frequency peaks, read as a continuum:<\/p>\n<h3>Lav \u2014 pole-pass-sideb\u00e5nd knap synlige over st\u00f8jgulvet<\/h3>\n<ul>\n<li>En normal tilstand.<\/li>\n<li>Et ensartet luftgab og god rotor-stator-koncentricitet.<\/li>\n<li>Ingen korrektiv handling n\u00f8dvendig.<\/li>\n<\/ul>\n<h3>Moderat \u2014 sideb\u00e5nd tydeligt synlige, men langt under b\u00e6retoppen<\/h3>\n<ul>\n<li>Let uj\u00e6vnhed i luftspalten eller tidlig nedbrydning af rotorkredsen.<\/li>\n<li>Overv\u00e5g trenden og kontroller lejestanden.<\/li>\n<li>Kontroller rotorens position, hvis den er tilg\u00e6ngelig.<\/li>\n<li>Ikke umiddelbar kritisk, men det kr\u00e6ver opm\u00e6rksomhed.<\/li>\n<\/ul>\n<h3>H\u00f8j \u2014 sideb\u00e5nd n\u00e6rmer sig b\u00e6retoppen i amplitude<\/h3>\n<ul>\n<li>Betydelig ekscentricitet, br\u00e6kkede rotorst\u00e6nger eller et problem i luftspalten.<\/li>\n<li>Et tydeligt lavfrekvent &#8220;beat&#8221; kan m\u00e6rkes eller h\u00f8res ved PPF.<\/li>\n<li>En risiko for rotor-stator-kontakt.<\/li>\n<li>Stigende elektromagnetiske kr\u00e6fter, som accelererer skaden.<\/li>\n<li>Planl\u00e6g reparation eller udskiftning.<\/li>\n<\/ul>\n<p>I praksis bed\u00f8mmer analyticeren sj\u00e6ldent PPF isoleret. En b\u00e6rbar tokanals-analysator s\u00e5som <a href=\"https:\/\/vibromera.eu\/da\/vare-2\/balanset-1\/\">Balanset-1A<\/a>, used at the bearing housings, captures the spectrum and resolves the pole-pass sidebands around the 1\u00d7 and line-frequency peaks \u2014 and, just as importantly, confirms whether the dominant component is electromagnetic or the simple 1\u00d7 peak of a mechanical fault. That distinction decides everything that follows: an electromagnetic signature sends you inside the motor, while a clean 1\u00d7 peak that disappears the instant power is cut points to <a href=\"https:\/\/vibromera.eu\/da\/glossary\/unbalance\/\">ubalance<\/a> kan du korrigere ved at <a href=\"https:\/\/vibromera.eu\/da\/glossary\/feltbalancering\/\">feltafbalancering<\/a> rotoren p\u00e5 plads.<\/p>\n<h2>5. Forhold til andre motorfrekvenser<\/h2>\n<p>PPF er en tone i et fyldt motorspektrum, og det er halvdelen af kampen at genkende, hvor den ligger i forhold til sine naboer. Et typisk hierarki for en 4-pols motor p\u00e5 1750 RPM ved 60 Hz forsyning er:<\/p>\n<ul>\n<li><strong>Glidefrekvens:<\/strong> (1800 \u2212 1750) \/ 60 \u2248 0.83 Hz.<\/li>\n<li><strong>PPF:<\/strong> P \u00d7 slipfrekvens \u2014 cirka 3.3 Hz her, den laveste tone i familien.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/da\/glossary\/running-speed\/\">Running speed<\/a> (1\u00d7):<\/strong> about 29.2 Hz.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/da\/glossary\/electrical-frequency\/\">Netfrekvens<\/a>:<\/strong> 60 Hz (eller 50 Hz i Europa).<\/li>\n<li><strong>Rotorens mekaniske orden P \u00d7 omdrejningshastighed:<\/strong> cirka 117 Hz \u2014 ofte forvekslet med PPF, men det er en akselharmonisk.<\/li>\n<li><strong>2\u00d7 netfrekvens:<\/strong> 120 Hz (eller 100 Hz) \u2014 den vigtigste elektromagnetiske komponent for ekscentricitet.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/da\/glossary\/motor-bar-pass-frequency\/\">Rotorstavpasfrekvens<\/a>:<\/strong> antal rotorst\u00e6nger \u00d7 omdrejningshastighed, oppe i kilohertzomr\u00e5det.<\/li>\n<\/ul>\n<p>Den t\u00e6tte afstand mellem 2\u00d7 netfrekvens (120 Hz) og den n\u00e6rliggende <a href=\"https:\/\/vibromera.eu\/da\/glossary\/harmonics\/\">harmoniske<\/a> orden af omdrejningshastigheden (4. orden ligger her p\u00e5 cirka 117 Hz) er pr\u00e6cis grunden til, at elektromagnetiske fejl s\u00e5 let forveksles med mekaniske \u2014 og hvorfor den fine pole-pass-sideb\u00e5ndsstruktur, ikke amplituden alene, er det afg\u00f8rende tegn. Hvor billedet fortsat er uklart, er afbrydelse af forsyningen den definitive test: en elektromagnetisk komponent forsvinder \u00f8jeblikkeligt sammen med feltet, mens en mekanisk f\u00f8rst aftager, n\u00e5r rotoren ruller ud.<\/p>\n<h2>6. Korrektionsmetoder<\/h2>\n<h3>For mekanisk excentricitet<\/h3>\n<ul>\n<li>Udskift slidte lejer for at genoprette korrekt rotorcentrering<\/li>\n<li>Ret en b\u00f8jet aksel eller erstat rotoren.<\/li>\n<li>Monter rotoren igen, hvis fejlen skyldes en installationsfejl.<\/li>\n<li>Kontroller endebelts justering og bolts stramning.<\/li>\n<\/ul>\n<h3>Ved fremstillingsbetinget ekscentricitet<\/h3>\n<ul>\n<li>Alvorlige tilf\u00e6lde kan kr\u00e6ve omboring af rotor eller stator.<\/li>\n<li>Erstat motoren, hvor det er \u00f8konomisk forsvarligt.<\/li>\n<li>Accept\u00e9r tilstanden, hvis vibrationerne forbliver inden for acceptable gr\u00e6nser.<\/li>\n<li>Dokument\u00e9r det som en baseline til fremtidigt sammenligningsgrundlag.<\/li>\n<\/ul>\n<h3>For luftspalteproblemer<\/h3>\n<ul>\n<li>Kontroller lejetilstanden og erstat det ved slitage.<\/li>\n<li>Bekr\u00e6ft rotorensaksel position.<\/li>\n<li>Inspic\u00e9r for rammeverping eller endebelts problemer.<\/li>\n<li>M\u00e5l den aktuelle luftspalt, hvor den er tilg\u00e6ngelig.<\/li>\n<\/ul>\n<p>Pole pass frequency er kort sagt en sliprelateret, motorspecifik lavfrekvent komponent, der giver indblik i rotor\u2013stator-elektromagnetisk interaktion og luftspaltens ensartethed. At mestre beregningen, genkende sideb\u00e5ndssignaturerne og tolke deres amplitudetrends g\u00f8r det muligt for en ingeni\u00f8r at diagnosticere elektromagnetiske fejl med sikkerhed \u2014 og rette vedligeholdelsesindsatsen mod det rigtige sted i stedet for at jagte en mekanisk \u00e5rsag, der aldrig var der.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/da\/glossary\/\">\u2190 Tilbage til hovedindekset<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r om polpassfrekvens (PPF), vibrationsfrekvensen genereret af rotorens interaktion med statorpoler, diagnosticering af luftgabets excentricitet og elektromagnetiske problemer i motorer.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-197","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/197\/revisions"}],"predecessor-version":[{"id":102086,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/197\/revisions\/102086"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/media?parent=197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/categories?post=197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/tags?post=197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}