{"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\/tl\/glossary\/pole-pass-frequency\/","title":{"rendered":"Ano ang Pole Pass Frequency? Motor Electromagnetic Forces"},"content":{"rendered":"<h1>Understanding Pole Pass Frequency<\/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\/tl\/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\/tl\/product\/balanset-1\/\" title=\"Portable balancer at Vibration analyzer 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 full kit portable na balancer at vibration analyzer\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/tl\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/tl\/product\/balanset-1\/\" title=\"Portable balancer at Vibration analyzer Balanset-1A\">Portable na balancer &#038; vibration analyzer na 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> + VAT (kung naaangkop)<\/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=\"\/tl\/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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/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=\"Add to cart: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/tl\/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\/tl\/product\/vibration-sensor\/\" title=\"Sensor ng vibraci\u00f3n\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A vibration sensor close-up\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/tl\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/tl\/product\/vibration-sensor\/\" title=\"Sensor ng vibraci\u00f3n\">Sensor ng vibraci\u00f3n<\/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> + VAT (kung naaangkop)<\/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=\"\/tl\/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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/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=\"Add to cart: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/tl\/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\/tl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical 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=\"Optical 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\/tl\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/tl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical Sensor (Laser Tachometer)\">Optical 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\">&euro;<\/span>124.00<\/span> + VAT (kung naaangkop)<\/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=\"\/tl\/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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/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=\"Add to cart: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/tl\/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\/tl\/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 rotor balancing kit: carrying case, multi-channel signal conditioner, handheld analyzer, magnetic base, mga vibration sensor, at mga coiled cable.\" 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\/tl\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/tl\/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> + VAT (kung naaangkop)<\/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=\"\/tl\/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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/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=\"Add to cart: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/tl\/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\/tl\/product\/magnet-stand\/\" title=\"Magnetic Stand 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=\"Magnet 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\/tl\/product-category\/parts\/\" 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class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Pole pass frequency<\/strong> (PPF) is the low-frequency <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/vibration\/\">vibration<\/a> component generated in an AC induction motor as the rotating magnetic field slips past the rotor. It is calculated as the number of poles multiplied by the <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/slip-frequency\/\">slip frequency<\/a>: PPF = number of poles \u00d7 (synchronous speed \u2212 actual speed) \/ 60. Because slip is small, PPF is a very low frequency \u2014 typically only a few hertz \u2014 and it usually shows up not as a stand-alone peak but as <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/sidebands\/\">sidebands<\/a> spaced at PPF around the running-speed and line-frequency components. That slip-related modulation is greatly amplified when the motor has <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/air-gap\/\">air-gap<\/a> eccentricity, broken rotor bars, or a rotor-to-stator alignment problem. Because of this, PPF is one of the most useful tools for separating <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/electrical-faults\/\">electrical faults<\/a> mula sa purong mechanical na mga problema.<\/p>\n<p>PPF matters diagnostically because elevated <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/sidebands\/\">sidebands<\/a> spaced at this frequency point squarely at an electromagnetic problem \u2014 an eccentric rotor, broken rotor bars, a non-uniform air gap, or dynamic rotor\u2013stator interaction \u2014 rather than at <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/unbalance\/\">unbalance<\/a> or <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/misalignment\/\">misalignment<\/a>. Kung basahin nang tama, ito ay nagsasabi sa analyst kung dapat buksan ang motor o tingnan ang ibang bahagi sa pagkakataon.<\/p>\n<h2>1. Pagkakalkula ng Pole Pass Frequency<\/h2>\n<h3>Ang pangunahing formula<\/h3>\n<ul>\n<li><strong>PPF = P \u00d7 (N<sub>sync<\/sub> \u2212 N) \/ 60<\/strong><\/li>\n<li>where <strong>P<\/strong> = bilang ng mga poles,<\/li>\n<li><strong>N<sub>sync<\/sub><\/strong> = synchronous speed in RPM (N<sub>sync<\/sub> = 120 \u00d7 line frequency \/ P),<\/li>\n<li><strong>N<\/strong> = aktwal na bilis ng rotor sa RPM,<\/li>\n<li>and the result is in Hz. The term (N<sub>sync<\/sub> \u2212 N) \/ 60 is the slip frequency expressed in Hz.<\/li>\n<\/ul>\n<p>Note that PPF is built on the <em>difference<\/em> between synchronous and actual speed \u2014 the <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/slip-frequency\/\">slip<\/a>. At no load an induction motor runs almost at synchronous speed, so PPF approaches zero; as load grows, slip and therefore PPF grow with it, typically ending up in the range of roughly 0.5\u20133.5 Hz at rated load. Do not confuse PPF with the purely mechanical order P \u00d7 running speed (for a 4-pole motor at 1750 RPM that is about 116.7 Hz) \u2014 that is a harmonic of shaft rotation, not pole pass frequency. When you need to convert running speed into a family of orders quickly, our <a href=\"https:\/\/vibromera.eu\/tl\/calculators\/harmonic-frequency-calculator\/\">Harmonic Frequency Calculator<\/a> ay nagiging RPM sa Hz sa mga order na 1\u00d7\u201310\u00d7, at ang <a href=\"https:\/\/vibromera.eu\/tl\/calculators\/motor-electrical-frequencies\/\">Motor Electrical Defect Frequency Calculator<\/a> ay naglalabas ng electromagnetic frequencies nang magkasama.<\/p>\n<h3>Mga halimbawang ginawa na<\/h3>\n<p><strong>Motor na may 4 polos sa 1750 RPM (60 Hz supply):<\/strong><\/p>\n<ul>\n<li>Synchronous speed N<sub>sync<\/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>In the vibration <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/spectrum\/\">spectrum<\/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>Motor na may 6 polos sa 970 RPM (50 Hz supply):<\/strong><\/p>\n<ul>\n<li>Synchronous speed N<sub>sync<\/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>Resolving them demands careful, high-resolution <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/spectral-analysis\/\">spectral analysis<\/a>.<\/li>\n<\/ul>\n<h2>2. Ang Pisikal na Mekanismo<\/h2>\n<h3>Paano nabubuo ang electromagnetic force<\/h3>\n<p>Ang hanay ng mga kaganapan na lumilikha ng PPF ay napakaginhawa:<\/p>\n<ol>\n<li>Ang mga winding ng stator ay lumilikha ng isang magnetic field na umiikot sa synchronous speed.<\/li>\n<li>Ang field na iyon ay naayos sa magnetic poles sa isang N\u2013S\u2013N\u2013S pattern.<\/li>\n<li>The rotor runs slightly slower because of slip, so the field poles continuously drift past the rotor rather than staying locked to it.<\/li>\n<li>Each time a field pole slips past a given spot on the rotor (a high-resistance bar, an eccentric side of the air gap), the magnetic force acting on that spot is modulated.<\/li>\n<li>With <strong>P<\/strong> poles, that spot is passed <strong>P<\/strong> times per slip cycle.<\/li>\n<li>The frequency of the resulting modulation is therefore P \u00d7 slip frequency = PPF \u2014 a slow &#8220;beating&#8221; superimposed on the running-speed and line-frequency vibration.<\/li>\n<\/ol>\n<h3>Uniform air gap \u2014 isang malusog na motor<\/h3>\n<ul>\n<li>Ang rotor ay nakasentro sa stator bore.<\/li>\n<li>Ang air gap ay uniform sa buong circumference.<\/li>\n<li>Ang mga magnetic forces ay balansado at kumukuha ng isa't isa.<\/li>\n<li>PPF-related modulation is consequently very low in amplitude.<\/li>\n<\/ul>\n<h3>Eccentric air gap \u2014 isang defective na motor<\/h3>\n<ul>\n<li>Ang rotor ay nakalagay na off-centre mula sa <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/bearing-wear\/\">bearing wear<\/a>, a <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/bent-shaft\/\">bent shaft<\/a>, o isang manufacturing error.<\/li>\n<li>Ang air gap ay mas maliit sa isang panig at mas malaki sa kabaligtaran.<\/li>\n<li>Ang mga magnetic forces ay nagiging hindi balansado \u2014 mas malakas kung saan ang gap ay mas maliit.<\/li>\n<li>A net radial force appears \u2014 <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/magnetic-pull\/\">hindi balanseadong magnetic pull<\/a> \u2014 and it is modulated at PPF as the field poles slip past the narrow side of the gap.<\/li>\n<li>Sidebands spaced at PPF develop around the main spectral peaks and grow with severity.<\/li>\n<\/ul>\n<h2>3. Mga Sideband at Diagnostic Patterns<\/h2>\n<h3>Static na eccentricity<\/h3>\n<p>Dito ang rotor centre ay offset ngunit stationary na may kaugnayan sa stator:<\/p>\n<ul>\n<li><strong>Pattern:<\/strong> an elevated 2\u00d7 line frequency component (100\/120 Hz); pole-pass sidebands are weak or absent because the offset does not rotate with the shaft.<\/li>\n<li><strong>Cause:<\/strong> bearing wear, frame or end-bell distortion, or a machining error in the stator bore.<\/li>\n<li><strong>Amplitude:<\/strong> the 2\u00d7 line frequency amplitude indicates the severity of the eccentricity.<\/li>\n<\/ul>\n<h3>Dynamic na eccentricity<\/h3>\n<p>Dito ang rotor centre ay umiikot, o umiikot, sa paligid ng stator centre:<\/p>\n<ul>\n<li><strong>Pattern:<\/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>Causes:<\/strong> a bent shaft, rotor <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/rotor-eccentricity\/\">eccentricity<\/a>, rotor-to-stator <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/rotor-rub\/\">rub<\/a> or bearing <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/looseness\/\">looseness<\/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>Pinagsama-samang eccentricity<\/h3>\n<ul>\n<li>Isang kombinasyon ng static at dynamic effects.<\/li>\n<li>Ito ang pinaka-karaniwang estado na makikita sa tunay na mga motor.<\/li>\n<li>Lumilikha ito ng komplikadong sideband patterns.<\/li>\n<li>Kailangan ng maingat na pagsusuri upang maintindihan ito nang tama.<\/li>\n<\/ul>\n<h2>4. Interpretasyon ng Diagnostic<\/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>Low \u2014 pole-pass sidebands barely visible above the noise floor<\/h3>\n<ul>\n<li>Isang normal na kondisyon.<\/li>\n<li>Isang pare-parehong air gap at magandang rotor\u2013stator na concentricity.<\/li>\n<li>Walang kinakailangang aksyon na pangkorreksyon.<\/li>\n<\/ul>\n<h3>Moderate \u2014 sidebands clearly visible but far below the carrier peak<\/h3>\n<ul>\n<li>Slight air-gap non-uniformity or early rotor-circuit degradation.<\/li>\n<li>Subaybayan ang trend at suriin ang kondisyon ng bearing.<\/li>\n<li>I-verify ang posisyon ng rotor kung ito ay accessible.<\/li>\n<li>Hindi agad kritikal, ngunit nangangailangan ng atensyon.<\/li>\n<\/ul>\n<h3>High \u2014 sidebands approaching the carrier peak in amplitude<\/h3>\n<ul>\n<li>Significant eccentricity, broken rotor bars, or an air-gap problem.<\/li>\n<li>A pronounced low-frequency &#8220;beat&#8221; may be felt or heard at PPF.<\/li>\n<li>Isang peligro ng rotor-to-stator na pakikipag-ugnayan.<\/li>\n<li>Tumataas na electromagnetic forces na nagpapabilis ng sira.<\/li>\n<li>Planuhin ang pagkukumpuni o pagpapalit.<\/li>\n<\/ul>\n<p>Sa praktika ang analyst ay bihira na naghuhusga ng PPF nang mag-isa. Isang portable na dalawang-channel analyser tulad ng <a href=\"https:\/\/vibromera.eu\/tl\/product\/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\/tl\/glossary\/unbalance\/\">unbalance<\/a> maaari mong itama sa pamamagitan ng <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/field-balancing\/\">on-site na pagbabalanse<\/a> ang rotor sa lugar.<\/p>\n<h2>5. Relasyon sa Ibang Motor Frequencies<\/h2>\n<p>Ang PPF ay isang tunog sa isang pusong motor spectrum, at kinikilala kung saan ito nakaupo kaugnay ng mga kapit-bahay nito ay kalahati ng labanan. Ang isang tipikal na hierarchy para sa isang 4-pole, 1750 RPM motor sa isang 60 Hz supply ay:<\/p>\n<ul>\n<li><strong>Slip frequency:<\/strong> (1800 \u2212 1750) \/ 60 \u2248 0.83 Hz.<\/li>\n<li><strong>PPF:<\/strong> P \u00d7 slip frequency \u2014 about 3.3 Hz here, the lowest tone in the family.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/tl\/glossary\/running-speed\/\">Running speed<\/a> (1\u00d7):<\/strong> about 29.2 Hz.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/tl\/glossary\/electrical-frequency\/\">Line frequency<\/a>:<\/strong> 60 Hz (or 50 Hz in Europe).<\/li>\n<li><strong>Rotor mechanical order P \u00d7 running speed:<\/strong> about 117 Hz \u2014 often mistaken for PPF, but it is a shaft-speed harmonic.<\/li>\n<li><strong>2\u00d7 line frequency:<\/strong> 120 Hz (or 100 Hz) \u2014 the key electromagnetic component for eccentricity.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/tl\/glossary\/motor-bar-pass-frequency\/\">Rotor bar pass frequency<\/a>:<\/strong> number of rotor bars \u00d7 running speed, up in the kilohertz range.<\/li>\n<\/ul>\n<p>The close spacing of 2\u00d7 line frequency (120 Hz) and the nearby <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/harmonics\/\">harmonics<\/a> of running speed (the 4th order sits at about 117 Hz here) is exactly why electromagnetic faults are so easily confused with mechanical ones \u2014 and why the fine pole-pass sideband structure, not amplitude alone, is the deciding clue. Where the picture remains ambiguous, switching off the supply is the definitive test: an electromagnetic component vanishes instantly with the field, whereas a mechanical one decays only as the rotor coasts down.<\/p>\n<h2>6. Mga Paraan ng Pagwawasto<\/h2>\n<h3>Para sa mechanical eccentricity<\/h3>\n<ul>\n<li>Palitan ang mga nagsimulang gumalaw nang maluwag na bearing upang maibalik ang wastong pagsentro ng rotor.<\/li>\n<li>Tukuyin ang baluktot na shaft o palitan ang rotor.<\/li>\n<li>I-mount muli ang rotor kung ang fault ay isang installation error.<\/li>\n<li>I-verify ang end-bell alignment at bolt tightness.<\/li>\n<\/ul>\n<h3>Para sa manufacturing eccentricity<\/h3>\n<ul>\n<li>Ang mga matinding kaso ay maaaring mangailangan ng reboring ng rotor o stator.<\/li>\n<li>Palitan ang motor kung ito ay economically justified.<\/li>\n<li>Tanggapin ang kondisyon kung ang vibration ay manatili sa loob ng acceptable limits.<\/li>\n<li>I-document ito bilang isang baseline para sa hinaharap na paghahambing.<\/li>\n<\/ul>\n<h3>Para sa air-gap issues<\/h3>\n<ul>\n<li>Suriin ang kondisyon ng bearing at palitan kung sira na.<\/li>\n<li>I-verify ang axial position ng rotor&#8217;s.<\/li>\n<li>Siyasatin para sa frame distortion o end-bell problems.<\/li>\n<li>Sukatin ang aktwal na air gap kung ito ay accessible.<\/li>\n<\/ul>\n<p>Pole pass frequency is, in summary, a slip-related, motor-specific low-frequency component that opens a window onto rotor\u2013stator electromagnetic interaction and air-gap uniformity. Mastering its calculation, recognising its sideband signatures, and reading their amplitude trends lets an engineer diagnose electromagnetic faults with confidence \u2014 and direct maintenance effort to the right place instead of chasing a mechanical cause that was never there.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/tl\/glossary\/\">\u2190 Bumalik sa Pangunahing Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Matuto tungkol sa pole pass frequency (PPF), ang vibration frequency na nabuo ng rotor interaction sa stator poles, diagnostic para sa air gap eccentricity at electromagnetic issues sa motors.<\/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\/tl\/wp-json\/wp\/v2\/glossary\/197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/glossary\/197\/revisions"}],"predecessor-version":[{"id":102086,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/glossary\/197\/revisions\/102086"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/media?parent=197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/categories?post=197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/tags?post=197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}