{"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":"2026-05-23T22:37:59","modified_gmt":"2026-05-23T22:37:59","slug":"pole-pass-frequency","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/nb\/glossary\/pole-pass-frequency\/","title":{"rendered":"Hva er polpassfrekvens? Motorens elektromagnetiske krefter"},"content":{"rendered":"<h1>Forst\u00e5 polpassfrekvens<\/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\/nb\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator 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 komplett sett med b\u00e6rbart balanseapparat og vibrasjonsanalysator\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator Balanset-1A\">B\u00e6rbart balanseapparat og vibrasjonsanalysator 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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">\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 vibrasjonssensor i n\u00e6rbilde\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">Vibrasjonssensor<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abVibration sensor\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abVibration sensor\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\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 (lasertakometer)\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abOptical Sensor (Laser Tachometer)\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abOptical Sensor (Laser Tachometer)\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/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 rotorbalanseringssett: b\u00e6reveske, flerkanals signalbehandler, h\u00e5ndholdt analysator, magnetisk base, vibrasjonssensorer 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abBalanset-4\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abBalanset-4\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/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=\"Magnetisk base.\" 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\/nb\/product-category\/parts\/\" 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href=\"https:\/\/vibromera.eu\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanseringsapparat &quot;Balanset-1A&quot; OEM\">Dynamisk balanseringsapparat \"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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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 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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>Polpassfrekvens<\/strong> (PPF, i enkelte sammenhenger ogs\u00e5 kalt \u00abslot pass frequency\u00bb) er <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/vibration\/\">vibrasjon<\/a> frekvensen som oppst\u00e5r i en vekselstr\u00f8msmotor n\u00e5r rotoren passerer statorens faste magnetpoler. Den beregnes som antall statorpoler ganget med rotorens turtall: PPF = (antall poler \u00d7 o\/min) \/ 60. N\u00e5r rotoren passerer polene, oppst\u00e5r det elektromagnetiske krefter som for\u00e5rsaker vibrasjoner, og disse vibrasjonene forsterkes kraftig n\u00e5r motoren har <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/air-gap\/\">luftspalte<\/a> eksentrisitet eller et justeringsproblem mellom rotor og stator. P\u00e5 grunn av dette er PPF et av de mest nyttige verkt\u00f8yene for \u00e5 skille <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/electrical-faults\/\">elektriske feil<\/a> fra rent mekaniske.<\/p>\n<p>PPF er diagnostisk viktig fordi \u00f8kt amplitude ved denne frekvensen, sammen med dens <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/sidebands\/\">sideb\u00e5nd<\/a>, peker direkte p\u00e5 et elektromagnetisk problem \u2013 en eksentrisk rotor, et ujevnt luftspalte eller dynamisk vekselvirkning mellom rotor og stator \u2013 snarere enn p\u00e5 <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/unbalance\/\">ubalanse<\/a> eller <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/misalignment\/\">feiljustering<\/a>. N\u00e5r den tolkes riktig, forteller den analytikeren om han skal \u00e5pne motoren eller se andre steder p\u00e5 toget.<\/p>\n<h2>1. Beregning av frekvensen for polpassering<\/h2>\n<h3>Grunnformelen<\/h3>\n<ul>\n<li><strong>PPF = P \u00d7 N \/ 60<\/strong><\/li>\n<li>hvor <strong>P<\/strong> = antall poler,<\/li>\n<li><strong>N<\/strong> = faktisk rotorhastighet i o\/min,<\/li>\n<li>og resultatet er angitt i Hz.<\/li>\n<\/ul>\n<p>Note that <strong>N<\/strong> er den <em>faktisk<\/em> akselhastigheten, ikke feltets synkronhastighet. En induksjonsmotor g\u00e5r alltid litt saktere enn feltet sitt p\u00e5 grunn av <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/slip-frequency\/\">skli<\/a>, s\u00e5 bruk av synkronhastigheten angitt p\u00e5 typeskiltet medf\u00f8rer en liten, men reell feil. N\u00e5r du raskt trenger \u00e5 omregne driftshastigheten til en rekke hastighetsklasser, er v\u00e5r <a href=\"https:\/\/vibromera.eu\/nb\/calculators\/harmonic-frequency-calculator\/\">Harmonisk frekvenskalkulator<\/a> omregner RPM til Hz i st\u00f8rrelsesorden 1\u201310, og <a href=\"https:\/\/vibromera.eu\/nb\/calculators\/motor-electrical-frequencies\/\">Kalkulator for motorens elektriske defektfrekvens<\/a> viser de elektromagnetiske frekvensene side om side.<\/p>\n<h3>Gjennomarbeidede eksempler<\/h3>\n<p><strong>4-polet motor ved 1750 o\/min (60 Hz):<\/strong><\/p>\n<ul>\n<li><strong>PPF = 4 \u00d7 1750 \/ 60 = 116,7 Hz<\/strong><\/li>\n<li>Denne komponenten vil vises i vibrasjonen <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/spectrum\/\">spektrum<\/a>.<\/li>\n<li>Sideb\u00e5nd ved \u00b11\u00d7 kj\u00f8rehastighet (\u00b129,2 Hz) er et tegn p\u00e5 eksentrisitet.<\/li>\n<\/ul>\n<p><strong>6-polet motor ved 970 o\/min (50 Hz):<\/strong><\/p>\n<ul>\n<li><strong>PPF = 6 \u00d7 970 \/ 60 = 97 Hz<\/strong><\/li>\n<li>Dette ligger n\u00e6r 2\u00d7 nettfrekvensen (100 Hz) og kan overlappe den.<\/li>\n<li>\u00c5 skille mellom de to kan kreve n\u00f8ye, h\u00f8yoppl\u00f8selig <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/spectral-analysis\/\">spektralanalyse<\/a>.<\/li>\n<\/ul>\n<h2>2. Den fysiske mekanismen<\/h2>\n<h3>Hvordan den elektromagnetiske kraften oppst\u00e5r<\/h3>\n<p>Hendelsesforl\u00f8pet som f\u00f8rer til PPF er enkelt:<\/p>\n<ol>\n<li>Statorviklingene skaper et magnetfelt som roterer med synkronhastighet.<\/li>\n<li>Dette feltet er organisert i magnetiske poler i et N\u2013S\u2013N\u2013S-m\u00f8nster.<\/li>\n<li>Rotoren, som g\u00e5r litt saktere p\u00e5 grunn av glidning, passerer hver av disse polene.<\/li>\n<li>Hver polpassasje ut\u00f8ver en magnetisk kraft p\u00e5 rotoren.<\/li>\n<li>With <strong>P<\/strong> poler, f\u00f8les rotoren <strong>P<\/strong> impulser per omdreining.<\/li>\n<li>Frekvensen til disse pulseringene er derfor P \u00d7 rotorhastighet = PPF.<\/li>\n<\/ol>\n<h3>Jevnt luftspalte \u2014 en velfungerende motor<\/h3>\n<ul>\n<li>Rotoren er sentrert i statorens hull.<\/li>\n<li>Luftspalten er jevn rundt hele omkretsen.<\/li>\n<li>Magnetkreftene er i likevekt og opphever hverandre.<\/li>\n<li>PPF-vibrasjonen har derfor sv\u00e6rt lav amplitude.<\/li>\n<\/ul>\n<h3>Eksentrisk luftspalte \u2014 en defekt motor<\/h3>\n<ul>\n<li>Rotoren sitter ikke sentrert i forhold til <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/bearing-wear\/\">slitasje p\u00e5 lager<\/a>, a <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/bent-shaft\/\">b\u00f8yd aksel<\/a>, eller en produksjonsfeil.<\/li>\n<li>Luftspalten er smalere p\u00e5 den ene siden og bredere p\u00e5 den andre.<\/li>\n<li>Magnetkreftene kommer i ubalanse \u2013 de er sterkere der avstanden er mindre.<\/li>\n<li>Det oppst\u00e5r en netto radial kraft ved PPF, en effekt som henger n\u00f8ye sammen med <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/magnetic-pull\/\">ubalansert magnetisk tiltrekning<\/a>.<\/li>\n<li>PPF-amplituden \u00f8ker, og sideb\u00e5nd dannes.<\/li>\n<\/ul>\n<h2>3. Sideb\u00e5nd og diagnostiske m\u00f8nstre<\/h2>\n<h3>Statisk eksentrisitet<\/h3>\n<p>Her er rotorsenteret forskj\u00f8vet, men st\u00e5r stille i forhold til statoren:<\/p>\n<ul>\n<li><strong>M\u00f8nster:<\/strong> PPF med sideb\u00e5nd ved \u00b11\u00d7 kj\u00f8rehastighet.<\/li>\n<li><strong>Eksempel:<\/strong> PPF \u00b1 f<sub>r<\/sub>, hvor f<sub>r<\/sub> er rotorens hastighet.<\/li>\n<li><strong>For\u00e5rsake:<\/strong> slitasje p\u00e5 lagre, en b\u00f8yd aksel eller rotor <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor-eccentricity\/\">eksentrisitet<\/a>.<\/li>\n<li><strong>Amplitude:<\/strong> Sideb\u00e5ndets amplitude angir hvor uttalt eksentrisiteten er.<\/li>\n<\/ul>\n<h3>Dynamisk eksentrisitet<\/h3>\n<p>Her kretser rotorens sentrum, eller snurrer, rundt statorens sentrum:<\/p>\n<ul>\n<li><strong>M\u00f8nster:<\/strong> PPF med en kompleks sideb\u00e5ndsstruktur.<\/li>\n<li><strong>\u00c5rsaker:<\/strong> rotor-to-stator <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor-rub\/\">gni<\/a> or bearing <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/looseness\/\">l\u00f8shet<\/a>.<\/li>\n<li><strong>More severe:<\/strong> det indikerer en aktiv, dynamisk interaksjon snarere enn en fast forskyvning.<\/li>\n<\/ul>\n<h3>Blandet eksentrisitet<\/h3>\n<ul>\n<li>En kombinasjon av statiske og dynamiske effekter.<\/li>\n<li>Dette er den vanligste tilstanden man finner i virkelige motorer.<\/li>\n<li>Det gir komplekse sideb\u00e5ndsm\u00f8nstre.<\/li>\n<li>Det kreves en grundig analyse for \u00e5 tolke det riktig.<\/li>\n<\/ul>\n<h2>4. Diagnostisk tolkning<\/h2>\n<p>Amplituden ved PPF b\u00f8r helst betraktes som et kontinuerlig spektrum, sammen med styrken til sideb\u00e5ndene:<\/p>\n<h3>Lav PPF-amplitude (under 0,5 mm\/s)<\/h3>\n<ul>\n<li>En normal tilstand.<\/li>\n<li>Et jevnt luftspalte og god konsentrisitet mellom rotor og stator.<\/li>\n<li>Det er ikke n\u00f8dvendig med korrigerende tiltak.<\/li>\n<\/ul>\n<h3>Moderat PPF (0,5\u20132,0 mm\/s)<\/h3>\n<ul>\n<li>En liten ujevnhet i luftspalten.<\/li>\n<li>F\u00f8lg med p\u00e5 utviklingen og sjekk tilstanden p\u00e5 lagrene.<\/li>\n<li>Kontroller rotorens posisjon hvis den er tilgjengelig.<\/li>\n<li>Det er ikke akutt kritisk, men det b\u00f8r tas p\u00e5 alvor.<\/li>\n<\/ul>\n<h3>H\u00f8y PPF (over 2,0 mm\/s)<\/h3>\n<ul>\n<li>Betydelig eksentrisitet eller et problem med luftspalten.<\/li>\n<li>Det forekommer sterke sideb\u00e5nd.<\/li>\n<li>Det er fare for kontakt mellom rotor og stator.<\/li>\n<li>\u00d8kende elektromagnetiske krefter som fremskynder skadene.<\/li>\n<li>Planlegg reparasjon eller utskifting.<\/li>\n<\/ul>\n<p>I praksis vurderer analytikeren sjelden PPF isolert. En b\u00e6rbar tokanalsanalysator som <a href=\"https:\/\/vibromera.eu\/nb\/produkt\/balanset-1\/\">Balanset-1A<\/a>, som brukes ved lagerhusene, fanger opp spektrumet og skiller ut sideb\u00e5ndene rundt PPF \u2013 og, like viktig, bekrefter om den dominerende komponenten er elektromagnetisk eller den enkle 1\u00d7-toppen som skyldes en mekanisk feil. Dette skillet avgj\u00f8r alt som f\u00f8lger: En elektromagnetisk signatur leder deg inn i motoren, mens en ren 1\u00d7-topp som forsvinner i det \u00f8yeblikket str\u00f8mmen brytes, tyder p\u00e5 <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/unbalance\/\">ubalanse<\/a> du kan rette ved \u00e5 <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/feltbalansering\/\">feltbalansering<\/a> rotoren p\u00e5 plass.<\/p>\n<h2>5. Forholdet til andre motoriske frekvenser<\/h2>\n<p>PPF er \u00e9n av mange motorer i et bredt spekter, og \u00e5 forst\u00e5 hvor den plasserer seg i forhold til de andre er halve jobben. Et typisk hierarki for en 4-polet motor med 1750 o\/min p\u00e5 60 Hz-nett er:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/nb\/glossary\/running-speed\/\">Running speed<\/a> (1\u00d7):<\/strong> ca. 29 Hz.<\/li>\n<li><strong>Glippfrekvens:<\/strong> vanligvis 1\u20133 Hz.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/nb\/glossary\/electrical-frequency\/\">Linjefrekvens<\/a>:<\/strong> 50 eller 60 Hz.<\/li>\n<li><strong>PPF:<\/strong> P \u00d7 l\u00f8pehastighet \u2014 ca. 117 Hz her.<\/li>\n<li><strong>2\u00d7 nettfrekvens:<\/strong> 100 eller 120 Hz.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/nb\/glossary\/motor-bar-pass-frequency\/\">Frekvensen for rotorstangspassering<\/a>:<\/strong> antall rotorstenger \u00d7 driftshastighet.<\/li>\n<\/ul>\n<p>Den tette avstanden mellom PPF, 2\u00d7 nettfrekvensen og h\u00f8yere ordens <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/harmonics\/\">harmoniske<\/a> Det er nettopp denne forskjellen i hastighet som gj\u00f8r at elektromagnetiske feil s\u00e5 lett kan forveksles \u2013 og hvorfor sideb\u00e5ndsstrukturen, ikke bare amplituden, er det avgj\u00f8rende kjennetegnet. Der bildet fortsatt er tvetydig, er det \u00e5 sl\u00e5 av str\u00f8mmen den endelige testen: en elektromagnetisk komponent forsvinner \u00f8yeblikkelig sammen med feltet, mens en mekanisk komponent avtar f\u00f8rst etter hvert som rotoren bremser ned.<\/p>\n<h2>6. Korrigeringsmetoder<\/h2>\n<h3>For mekanisk eksentrisitet<\/h3>\n<ul>\n<li>Skift ut slitte lagre for \u00e5 gjenopprette riktig rotorsentrering<\/li>\n<li>Rett opp en b\u00f8yd aksel, eller skift ut rotoren.<\/li>\n<li>Monter rotoren p\u00e5 nytt hvis feilen skyldes en monteringsfeil.<\/li>\n<li>Kontroller at endehetten sitter rett og at boltene er strammet.<\/li>\n<\/ul>\n<h3>For produksjon av eksentriske deler<\/h3>\n<ul>\n<li>I alvorlige tilfeller kan det v\u00e6re n\u00f8dvendig \u00e5 bore opp rotoren eller statoren p\u00e5 nytt.<\/li>\n<li>Bytt ut motoren der det er \u00f8konomisk forsvarlig.<\/li>\n<li>Godta betingelsen dersom vibrasjonen holder seg innenfor akseptable grenser.<\/li>\n<li>Dokumenter dette som et utgangspunkt for fremtidige sammenligninger.<\/li>\n<\/ul>\n<h3>N\u00e5r det gjelder problemer med luftspalter<\/h3>\n<ul>\n<li>Kontroller lagerets tilstand og skift det ut hvis det er slitt.<\/li>\n<li>Kontroller rotorens aksiale posisjon.<\/li>\n<li>Kontroller om rammen er skjev eller om det er problemer med endehettene.<\/li>\n<li>M\u00e5l den faktiske luftspalten der det er tilgang til den.<\/li>\n<\/ul>\n<p>Polpassfrekvensen er, kort sagt, en motorspesifikk vibrasjonskomponent som gir innsikt i den elektromagnetiske vekselvirkningen mellom rotor og stator samt luftspaltenes jevnhet. Ved \u00e5 mestre beregningen av denne, gjenkjenne sideb\u00e5ndssignaturene og tolke amplitudetrendene, kan en ingeni\u00f8r diagnostisere elektromagnetiske feil med sikkerhet \u2013 og rette vedlikeholdsarbeidet mot riktig sted, i stedet for \u00e5 lete etter en mekanisk \u00e5rsak som aldri har eksistert.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/nb\/glossary\/\">\u2190 Tilbake til hovedindeksen<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r om polpassfrekvens (PPF), vibrasjonsfrekvensen som genereres av rotorens interaksjon med statorpoler, diagnostikk for luftgapseksentrisitet 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\/nb\/wp-json\/wp\/v2\/glossary\/197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/197\/revisions"}],"predecessor-version":[{"id":101297,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/197\/revisions\/101297"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}