{"id":112,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/electrical-unbalance\/"},"modified":"2026-05-29T15:58:09","modified_gmt":"2026-05-29T15:58:09","slug":"electrical-unbalance","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/electrical-unbalance\/","title":{"rendered":"M\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n l\u00e0 g\u00ec? M\u1ea5t c\u00e2n b\u1eb1ng pha trong \u0111\u1ed9ng c\u01a1"},"content":{"rendered":"<h1>Hi\u1ec3u v\u1ec1 s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n<\/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\/vi\/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\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng 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=\"B\u1ed9 \u0111\u1ea7y \u0111\u1ee7 m\u00e1y c\u00e2n b\u1eb1ng v\u00e0 ph\u00e2n t\u00edch rung \u0111\u1ed9ng c\u1ea7m tay Balanset-1A\" 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\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/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\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A\">M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng 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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">\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=\"C\u1eadn c\u1ea3nh c\u1ea3m bi\u1ebfn rung Balanset-1A\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">C\u1ea3m bi\u1ebfn rung<\/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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">\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=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)<\/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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/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=\"B\u1ed9 d\u1ee5ng c\u1ee5 c\u00e2n b\u1eb1ng r\u00f4to Vibromera: h\u1ed9p \u0111\u1ef1ng, b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh t\u00edn hi\u1ec7u \u0111a k\u00eanh, m\u00e1y ph\u00e2n t\u00edch c\u1ea7m tay, \u0111\u1ebf t\u1eeb, c\u1ea3m bi\u1ebfn rung v\u00e0 d\u00e2y c\u00e1p xo\u1eafn.\" 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\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/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\/vi\/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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb 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=\"\u0110\u1ebf nam ch\u00e2m.\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb Insize-60-kgf\">\u0110\u1ebf t\u1eeb Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"B\u0103ng ph\u1ea3n quang\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">B\u0103ng ph\u1ea3n quang<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/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\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d 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=\"N\u1ed9i dung b\u1ed9 s\u1ea3n ph\u1ea9m Balanset-1A bao g\u1ed3m thi\u1ebft b\u1ecb giao di\u1ec7n, c\u1ea3m bi\u1ebfn, m\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n\" 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\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/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\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM\">M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d 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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/112?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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>M\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n<\/strong> \u2014 c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>m\u1ea5t c\u00e2n b\u1eb1ng pha<\/strong>, <strong>m\u1ea5t c\u00e2n b\u1eb1ng pha<\/strong>, <strong>m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p<\/strong> ho\u1eb7c <strong>m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n<\/strong> \u2014 l\u00e0 t\u00ecnh tr\u1ea1ng trong m\u1ed9t h\u1ec7 th\u1ed1ng ba pha trong \u0111\u00f3 c\u00e1c \u0111i\u1ec7n \u00e1p ho\u1eb7c d\u00f2ng \u0111i\u1ec7n \u1edf ba pha kh\u00f4ng b\u1eb1ng nhau v\u1ec1 \u0111\u1ed9 l\u1edbn ho\u1eb7c kh\u00f4ng \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t b\u1edfi ch\u00ednh x\u00e1c 120 \u0111\u1ed9 \u0111i\u1ec7n. S\u1ef1 m\u1ea5t \u0111\u1ed1i x\u1ee9ng n\u00e0y, d\u00f9 xu\u1ea5t ph\u00e1t t\u1eeb ngu\u1ed3n c\u1ea5p hay b\u00ean trong <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/motor-defects\/\">\u0111\u1ed9ng c\u01a1<\/a> c\u00e1c cu\u1ed9n d\u00e2y, t\u1ea1o ra c\u00e1c l\u1ef1c \u0111i\u1ec7n t\u1eeb m\u1ea5t c\u00e2n b\u1eb1ng, m\u00e1t qu\u00e1 m\u1ee9c c\u00e1c cu\u1ed9n d\u00e2y, d\u00f2ng \u0111i\u1ec7n tu\u1ea7n t\u1ef1 \u00e2m, nh\u1eefng xung \u0111\u1ed9ng l\u1ef1c, v\u00e0 m\u1ed9t \u0111\u1eb7c t\u00ednh <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration\/\">rung \u0111\u1ed9ng<\/a> \u1edf g\u1ea5p \u0111\u00f4i <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/electrical-frequency\/\">t\u1ea7n s\u1ed1 d\u00f2ng \u0111i\u1ec7n<\/a>.<\/p>\n<p>\u0110i\u1ec1u khi\u1ebfn s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n g\u00e2y nh\u1ea7m l\u1eabn l\u00e0 t\u00e1c \u0111\u1ed9ng li\u00ean quan: ngay c\u1ea3 m\u1ed9t m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p nh\u1ecf 2\u20133% c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n l\u1edbn g\u1ea5p s\u00e1u \u0111\u1ebfn m\u01b0\u1eddi l\u1ea7n, \u00e2m th\u1ea7m l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t \u0111\u1ed9ng c\u01a1, l\u1ec1 m\u00e1t v\u00e0 tu\u1ed5i th\u1ecd c\u00e1ch \u0111i\u1ec7n. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u1ea5t \u2014 v\u00e0 \u0111\u01b0\u1ee3c b\u1ecf qua nhi\u1ec1u nh\u1ea5t \u2014 trong c\u00e1c c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p, ph\u00e1t sinh t\u1eeb c\u00e1c v\u1ea5n \u0111\u1ec1 cung c\u1ea5p c\u00f4ng su\u1ea5t, ph\u00e2n ph\u1ed1i trong nh\u00e0 m\u00e1y k\u00e9m ho\u1eb7c c\u00e1c khi\u1ebfm khuy\u1ebft b\u00ean trong \u0111\u1ed9ng c\u01a1. V\u00ec ch\u1eef k\u00fd rung \u0111\u1ed9ng c\u1ee7a n\u00f3 chia s\u1ebb c\u00e1c t\u1ea7n s\u1ed1 v\u1edbi m\u1ed9t s\u1ed1 l\u1ed7i c\u01a1 h\u1ecdc th\u1ef1c s\u1ef1, n\u00f3 c\u0169ng l\u00e0 m\u1ed9t trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c ch\u1ea9n \u0111o\u00e1n sai l\u1ea7m nh\u1ea5t m\u00e0 m\u1ed9t nh\u00f3m b\u1ea3o tr\u00ec g\u1eb7p ph\u1ea3i.<\/p>\n<h2>1. M\u1ea5t C\u00e2n B\u1eb1ng Pha L\u00e0 G\u00ec? M\u1ea5t C\u00e2n B\u1eb1ng \u0110i\u1ec7n \u00c1p, D\u00f2ng \u0110i\u1ec7n v\u00e0 G\u00f3c Pha<\/h2>\n<p>&#8220;M\u1ea5t c\u00e2n b\u1eb1ng pha&#8221; l\u00e0 t\u00ean th\u00f4ng th\u01b0\u1eddng tr\u00ean s\u00e0n x\u01b0\u1edfng cho c\u00f9ng m\u1ed9t t\u00ecnh tr\u1ea1ng, v\u00e0 n\u00f3 xu\u1ea5t hi\u1ec7n \u1edf ba d\u1ea1ng ri\u00eang bi\u1ec7t nh\u01b0ng li\u00ean k\u1ebft. Bi\u1ebft b\u1ea1n \u0111ang \u0111o lo\u1ea1i n\u00e0o l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng: m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p l\u00e0 nguy\u00ean nh\u00e2n m\u00e0 ngu\u1ed3n c\u1ea5p \u00e1p d\u1ee5ng cho \u0111\u1ed9ng c\u01a1, trong khi m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n l\u00e0 khu\u1ebfch \u0111\u1ea1i <em>\u1ea3nh h\u01b0\u1edfng<\/em> m\u00e0 \u0111\u1ed9ng c\u01a1 ph\u1ea3i ch\u1ecbu \u0111\u1ef1ng \u0111\u1ec3 \u0111\u00e1p l\u1ea1i.<\/p>\n<h3>M\u1ea5t c\u00e2n b\u1eb1ng \u0110i\u1ec7n \u00e1p<\/h3>\n<p>M\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p l\u00e0 s\u1ef1 b\u1ea5t b\u1eb1ng c\u1ee7a ba \u0111i\u1ec7n \u00e1p gi\u1eefa c\u00e1c pha (ho\u1eb7c gi\u1eefa pha v\u00e0 trung t\u00ednh). N\u00f3 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u00e1ch \u0111\u1ecdc \u0111i\u1ec7n \u00e1p gi\u1eefa t\u1eebng c\u1eb7p pha \u2014 AB, BC v\u00e0 CA \u2014 v\u00e0 \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb d\u01b0\u1edbi d\u1ea1ng t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m s\u1eed d\u1ee5ng \u0111\u1ecbnh ngh\u0129a NEMA: <strong>% m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p = (\u0111\u1ed9 l\u1ec7ch t\u1ed1i \u0111a so v\u1edbi gi\u00e1 tr\u1ecb trung b\u00ecnh \u00f7 gi\u00e1 tr\u1ecb trung b\u00ecnh) \u00d7 100<\/strong>. V\u00ed d\u1ee5 minh h\u1ecda: c\u00e1c pha 477 V, 480 V v\u00e0 483 V c\u00f3 trung b\u00ecnh 480 V; \u0111\u1ed9 l\u1ec7ch c\u1ef1c \u0111\u1ea1i l\u00e0 3 V, cho m\u1ea5t c\u00e2n b\u1eb1ng 0,625%. NEMA MG-1 coi b\u1ea5t k\u1ef3 \u0111i\u1ec1u g\u00ec d\u01b0\u1edbi 1% l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c, trong khi th\u1ef1c h\u00e0nh IEC ch\u1ea5p nh\u1eadn \u0111\u1ebfn kho\u1ea3ng 2%. M\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p l\u00e0 tham s\u1ed1 c\u1ea7n theo d\u00f5i tr\u01b0\u1edbc ti\u00ean, v\u00ec n\u00f3 l\u00e0 tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n ng\u1eef ph\u00e1p c\u1ee7a h\u1ea7u h\u1ebft m\u1ecdi th\u1ee9 theo sau.<\/p>\n<h3>M\u1ea5t c\u00e2n b\u1eb1ng D\u00f2ng \u0111i\u1ec7n<\/h3>\n<p>M\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n l\u00e0 s\u1ef1 b\u1ea5t b\u1eb1ng c\u1ee7a ba d\u00f2ng \u0111i\u1ec7n pha (I<sub>A<\/sub>, t\u00f4i<sub>B<\/sub>, t\u00f4i<sub>C<\/sub>), \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng k\u1eb9p \u0111o v\u00e0 t\u00ednh to\u00e1n b\u1eb1ng c\u00f4ng th\u1ee9c \u0111\u1ed9 l\u1ec7ch c\u1ef1c \u0111\u1ea1i t\u01b0\u01a1ng t\u1ef1. S\u1ef1 ki\u1ec7n ti\u00eau \u0111\u1ec1 v\u1ec1 m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n l\u00e0 \u0111\u1ed9 nh\u1ea1y c\u1ee7a n\u00f3: v\u00ec t\u1ed5ng tr\u1edf tu\u1ea7n t\u1ef1 \u00e2m c\u1ee7a \u0111\u1ed9ng c\u01a1 th\u1ea5p, m\u1ed9t m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p khi\u00eam t\u1ed1n \u0111\u01b0\u1ee3c ph\u00f3ng \u0111\u1ea1i th\u00e0nh m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n kho\u1ea3ng <strong>s\u00e1u \u0111\u1ebfn m\u01b0\u1eddi l\u1ea7n l\u1edbn h\u01a1n<\/strong>. M\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p 1% kh\u00f3 nh\u1eadn th\u1ea5y c\u00f3 th\u1ec3 do \u0111\u00f3 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n 6\u201310% \u2014 \u0111\u00f3 ch\u00ednh l\u00e0 l\u00fd do t\u1ea1i sao d\u00f2ng \u0111i\u1ec7n l\u00e0 ph\u00e9p \u0111o c\u1ea3nh b\u00e1o s\u1edbm nh\u1ea1y h\u01a1n, v\u00e0 t\u1ea1i sao m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n t\u0103ng tr\u00ean ngu\u1ed3n c\u1ea5p \u1ed5n \u0111\u1ecbnh ch\u1ec9 ra m\u1ed9t l\u1ed7i \u0111ang ph\u00e1t tri\u1ec3n b\u00ean trong \u0111\u1ed9ng c\u01a1.<\/p>\n<h3>M\u1ea5t c\u00e2n b\u1eb1ng G\u00f3c Pha<\/h3>\n<p>D\u1ea1ng th\u1ee9 ba l\u00e0 g\u00f3c: ba v\u00e9c t\u01a1 pha kh\u00f4ng c\u00f2n \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t b\u1edfi ch\u00ednh x\u00e1c 120\u00b0, ngay c\u1ea3 khi \u0111\u1ed9 l\u1edbn c\u1ee7a ch\u00fang b\u1eb1ng nhau. \u0110i\u1ec1u n\u00e0y \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n m\u1ea5t c\u00e2n b\u1eb1ng \u0111\u1ed9 l\u1edbn v\u00e0 kh\u00f4ng th\u1ec3 th\u1ea5y b\u1eb1ng m\u1ed9t volt k\u1ebf \u0111\u01a1n gi\u1ea3n \u2014 n\u00f3 y\u00eau c\u1ea7u m\u1ed9t b\u1ed9 ph\u00e2n t\u00edch ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng gi\u1ea3i quy\u1ebft c\u00e1c m\u1ed1i quan h\u1ec7 v\u00e9c t\u01a1 pha. M\u1ea5t c\u00e2n b\u1eb1ng g\u00f3c t\u1ea1o ra c\u00f9ng m\u1ed9t l\u1ef1c xung \u0111\u1ed9ng v\u00e0 m\u00e1t qu\u00e1 m\u1ee9c b\u1ed5 sung nh\u01b0 m\u1ea5t c\u00e2n b\u1eb1ng \u0111\u1ed9 l\u1edbn, v\u00e0 hai \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra c\u00f9ng nhau.<\/p>\n<h2>2. S\u1ef1 M\u1ea5t C\u00e2n B\u1eb1ng \u0110i\u1ec7n T\u1ea1o Ra Rung \u0110\u1ed9ng Trong \u0110\u1ed9ng C\u01a1 Nh\u01b0 Th\u1ebf N\u00e0o<\/h2>\n<p>M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa m\u1ed9t b\u1ea5t \u0111\u1ed1i x\u1ee9ng \u0111i\u1ec7n v\u00e0 m\u1ed9t rung \u0111\u1ed9ng c\u01a1 h\u1ecdc ch\u1ea1y qua tr\u01b0\u1eddng t\u1eeb khe h\u1edf kh\u00f4ng kh\u00ed. Trong m\u1ed9t m\u00e1y c\u00e2n b\u1eb1ng, tr\u01b0\u1eddng xoay l\u00e0 m\u1ecbn v\u00e0 c\u00e1c l\u1ef1c t\u1eeb h\u01b0\u1edbng t\u00e2m t\u1ed5ng h\u1ee3p th\u00e0nh m\u1ed9t l\u1ef1c k\u00e9o \u1ed5n \u0111\u1ecbnh, \u0111\u1ed1i x\u1ee9ng. M\u1ea5t c\u00e2n b\u1eb1ng ph\u00e1 v\u1ee1 s\u1ef1 \u0111\u1ed1i x\u1ee9ng \u0111\u00f3 v\u00e0 gi\u1edbi thi\u1ec7u m\u1ed9t <em>th\u1ee9 t\u1ef1 pha \u00e2m<\/em> th\u00e0nh ph\u1ea7n \u2014 m\u1ed9t tr\u01b0\u1eddng xoay ng\u01b0\u1ee3c l\u1ea1i so v\u1edbi tr\u01b0\u1eddng ch\u00ednh \u2014 c\u00e1i m\u00e0 \u0111\u00e1nh b\u1ea1i n\u00f3 v\u00e0 \u0111i\u1ec1u ch\u1ebf l\u1ef1c t\u1eeb.<\/p>\n<p>K\u1ebft qu\u1ea3 chi\u1ebfm \u01b0u th\u1ebf l\u00e0 m\u1ed9t rung \u0111\u1ed9ng \u1edf <strong>hai l\u1ea7n t\u1ea7n s\u1ed1 \u0111i\u1ec7n l\u01b0\u1edbi<\/strong>: 100 Hz tr\u00ean ngu\u1ed3n 50 Hz, ho\u1eb7c 120 Hz tr\u00ean ngu\u1ed3n 60 Hz. Th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 g\u1ea5p \u0111\u00f4i t\u1ea7n s\u1ed1 l\u01b0\u1edbi \u0111i\u1ec7n n\u00e0y c\u00f3 ngu\u1ed3n g\u1ed1c thu\u1ea7n t\u00fay \u0111i\u1ec7n t\u1eeb \u2014 \u0111\u00f3 l\u00e0 l\u1ef1c h\u00fat m\u1ea1ch \u0111\u1eadp tr\u00ean <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/air-gap\/\">kho\u1ea3ng tr\u1ed1ng kh\u00f4ng kh\u00ed<\/a>, kh\u00f4ng ph\u1ea3i m\u1ed9t l\u1ef1c c\u01a1 h\u1ecdc t\u1eeb kh\u1ed1i l\u01b0\u1ee3ng xoay. Bi\u00ean \u0111\u1ed9 c\u1ee7a n\u00f3 t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi m\u1ee9c \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng, v\u00ec v\u1eady vi\u1ec7c cung c\u1ea5p \u0111i\u1ec7n x\u1ea5u \u0111i ho\u1eb7c m\u1ed9t l\u1ed7i cu\u1ed9n d\u00e2y ph\u00e1t tri\u1ec3n xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng m\u1ed9t pique 100\/120 Hz t\u0103ng \u0111\u1ec1u \u0111\u1eb7n trong <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a>.<\/p>\n<p>M\u1ed9t ch\u1eef k\u00fd th\u1ee9 hai, tinh t\u1ebf h\u01a1n xu\u1ea5t hi\u1ec7n t\u1ea1i <strong>1\u00d7 t\u1ed1c \u0111\u1ed9 ch\u1ea1y<\/strong>, \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf b\u1edfi t\u1ea7n s\u1ed1 tr\u01b0\u1ee3t c\u1ef1c (s\u1ed1 c\u1ef1c nh\u00e2n v\u1edbi t\u1ea7n s\u1ed1 tr\u01b0\u1ee3t). \u0110i\u1ec1u ch\u1ebf c\u1ef1c-qua n\u00e0y t\u1ea1o ra c\u00e1c d\u1ea3i ph\u1ee5 xung quanh \u0111\u1ec9nh t\u1ed1c \u0111\u1ed9 ch\u1ea1y v\u00e0 l\u00e0 d\u1ea5u hi\u1ec7u \u0111\u1eb7c tr\u01b0ng c\u1ed5 \u0111i\u1ec3n c\u1ee7a c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111i\u1ec7n li\u00ean quan \u0111\u1ebfn rotor nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/rotor-bar-defects\/\">thanh r\u00f4to b\u1ecb h\u1ecfng<\/a>. \u0110\u1ecdc ch\u00ednh x\u00e1c c\u00e1c d\u1ea3i ph\u1ee5 n\u00e0y l\u00e0 nh\u1eefng g\u00ec cho ph\u00e9p m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch ph\u00e2n bi\u1ec7t m\u1ea5t c\u00e2n b\u1eb1ng t\u1eeb ph\u00eda cung c\u1ea5p v\u1edbi m\u1ed9t l\u1ed7i t\u00edch h\u1ee3p trong rotor.<\/p>\n<h2>3. Ph\u00e2n bi\u1ec7t M\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n kh\u1ecfi M\u1ea5t c\u00e2n b\u1eb1ng C\u01a1 h\u1ecdc<\/h2>\n<p>V\u00ec th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 d\u00f2ng \u0111i\u1ec7n t\u1eeb 2\u00d7 n\u1eb1m r\u1ea5t g\u1ea7n t\u1ed1c \u0111\u1ed9 ch\u1ea1y g\u1ea5p \u0111\u00f4i tr\u00ean \u0111\u1ed9ng c\u01a1 hai c\u1ef1c, n\u00f3 th\u01b0\u1eddng xuy\u00ean b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi c\u00e1c l\u1ed7i c\u01a1 h\u1ecdc nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/misalignment\/\">s\u1ef1 kh\u00f4ng th\u1eb3ng h\u00e0ng<\/a> ho\u1eb7c l\u1ecfng l\u1ebbo, c\u0169ng t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng 2\u00d7 t\u1ed1c \u0111\u1ed9 tr\u1ee5c. Ph\u00e2n bi\u1ec7t ch\u00fang l\u00e0 k\u1ef9 n\u0103ng ch\u1ea9n \u0111o\u00e1n h\u1eefu \u00edch duy nh\u1ea5t nh\u1ea5t cho rung \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1, v\u00e0 c\u00f3 hai b\u00e0i ki\u1ec3m tra \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>C\u00e1ch th\u1ee9 nh\u1ea5t l\u00e0 <strong>\u0111\u1ed9 ch\u00ednh x\u00e1c t\u1ea7n s\u1ed1<\/strong>. M\u1ed9t th\u00e0nh ph\u1ea7n \u0111i\u1ec7n \u0111\u01b0\u1ee3c kh\u00f3a v\u00e0o m\u1ea1ng l\u01b0\u1edbi t\u1ea1i <em>ch\u00ednh x\u00e1c<\/em> 100 Hz ho\u1eb7c 120 Hz, trong khi m\u1ed9t 2\u00d7 c\u01a1 h\u1ecdc n\u1eb1m \u1edf g\u1ea5p \u0111\u00f4i t\u1ed1c \u0111\u1ed9 ch\u1ea1y th\u1ef1c t\u1ebf \u2014 do tr\u01b0\u1ee3t \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng, lu\u00f4n h\u01a1i th\u1ea5p h\u01a1n g\u1ea5p \u0111\u00f4i t\u1ed1c \u0111\u1ed9 \u0111\u1ed3ng b\u1ed9. V\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i ph\u1ed5 \u0111\u1ee7, c\u00e1c \u0111\u1ec9nh t\u00e1ch ra: m\u1ed9t \u0111\u1ec9nh kh\u00f3a d\u00f2ng kh\u00f4ng chuy\u1ec3n \u0111\u1ed9ng khi t\u1ea3i l\u00e0 \u0111i\u1ec7n; m\u1ed9t \u0111\u1ec9nh theo d\u00f5i t\u1ed1c \u0111\u1ed9 tr\u1ee5c l\u00e0 c\u01a1 h\u1ecdc.<\/p>\n<p>C\u00e1i th\u1ee9 hai \u2014 v\u00e0 quy\u1ebft \u0111\u1ecbnh nh\u1ea5t \u2014 l\u00e0 <strong>ph\u00e9p th\u1eed kh\u00f4ng ngu\u1ed3n (power-off test)<\/strong>. Quan s\u00e1t \u0111\u1ec9nh nghi v\u1ea5n theo th\u1eddi gian th\u1ef1c v\u00e0 c\u1eaft ngu\u1ed3n \u0111i\u1ec7n cho \u0111\u1ed9ng c\u01a1. M\u1ed9t th\u00e0nh ph\u1ea7n \u0111i\u1ec7n th\u1ef1c s\u1ef1 <em>bi\u1ebfn m\u1ea5t t\u1ee9c th\u00ec<\/em> khi t\u1eaft c\u00f4ng t\u1eafc, b\u1edfi v\u00ec l\u1ef1c t\u1eeb t\u00ednh bi\u1ebfn m\u1ea5t kho\u1ea3nh kh\u1eafc d\u00f2ng \u0111i\u1ec7n d\u1eebng, trong khi m\u1ed9t th\u00e0nh ph\u1ea7n c\u01a1 h\u1ecdc suy gi\u1ea3m d\u1ea7n khi rotor tr\u01b0\u1ee3t xu\u1ed1ng. B\u00e0i ki\u1ec3m tra bi\u1ebfn m\u1ea5t t\u1ee9c th\u1eddi n\u00e0y l\u00e0 c\u00e1ch c\u1ed5 \u0111i\u1ec3n, r\u00f5 r\u00e0ng \u0111\u1ec3 x\u00e1c nh\u1eadn m\u1ed9t ngu\u1ed3n g\u1ed1c \u0111i\u1ec7n, v\u00e0 n\u00f3 ch\u1ec9 c\u1ea7n kh\u00f4ng c\u00f3 g\u00ec ngo\u00e0i hi\u1ec3n th\u1ecb ph\u1ed5 tr\u1ef1c ti\u1ebfp v\u00e0 n\u00fat d\u1eebng.<\/p>\n<h2>4. Nguy\u00ean nh\u00e2n c\u1ee7a M\u1ea5t c\u00e2n b\u1eb1ng \u0110i\u1ec7n<\/h2>\n<p>C\u00e1c ngu\u1ed3n m\u1ea5t c\u00e2n b\u1eb1ng chia t\u1ef1 nhi\u00ean th\u00e0nh ba l\u1edbp, di chuy\u1ec3n t\u1eeb l\u01b0\u1edbi v\u00e0o m\u00e1y.<\/p>\n<h3>C\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 cung c\u1ea5p ti\u1ec7n \u00edch<\/h3>\n<p>T\u1ea1i ngu\u1ed3n cung c\u1ea5p, m\u1ea5t c\u00e2n b\u1eb1ng th\u01b0\u1eddng \u0111\u1ebfn t\u1eeb c\u00e1c m\u00e1y bi\u1ebfn \u00e1p ph\u00e2n ph\u1ed1i kh\u00f4ng c\u00e2n b\u1eb1ng, t\u1ea3i m\u1ed9t pha l\u1edbn \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t pha c\u1ee7a d\u1ecbch v\u1ee5 ba pha, tr\u1edf kh\u00e1ng kh\u00f4ng b\u1eb1ng nhau gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n d\u00e0i, ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n l\u1ed7i ti\u1ec7n \u00edch r\u1ed9ng h\u01a1n. Nh\u1eefng th\u1ee9 n\u00e0y t\u1ea1o ra m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p c\u00f3 m\u1eb7t tr\u01b0\u1edbc khi \u0111i\u1ec7n th\u1eadm ch\u00ed kh\u00f4ng v\u00e0o t\u00f2a nh\u00e0, v\u00e0 ch\u00fang \u0111\u01b0\u1ee3c ch\u1ea9n \u0111o\u00e1n b\u1eb1ng c\u00e1ch \u0111o t\u1ea1i l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5.<\/p>\n<h3>Ph\u00e2n ph\u1ed1i c\u01a1 s\u1edf<\/h3>\n<p>B\u00ean trong nh\u00e0 m\u00e1y, nh\u1eefng k\u1ebb ph\u1ea1m t\u1ed9i th\u00f4ng th\u01b0\u1eddng l\u00e0 m\u1ed9t k\u1ebft n\u1ed1i kh\u00e1ng cao trong m\u1ed9t pha, m\u1ed9t c\u1ea7u ch\u00ec b\u1ecb h\u1ecfng m\u1ea5t m\u1ed9t ph\u1ea7n pha, \u0111\u1ed9 d\u00e0i c\u00e1p kh\u00f4ng b\u1eb1ng nhau cung c\u1ea5p cho c\u00e1c d\u00e2y d\u1eabn tr\u1edf kh\u00e1ng kh\u00e1c nhau, ho\u1eb7c \u2014 \u1edf c\u1ef1c \u0111oan \u2014 m\u1ea5t m\u1ed9t pha, m\u1ea5t ho\u00e0n to\u00e0n m\u1ed9t pha. M\u1ed9t thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i l\u1ecfng l\u1ebbo ho\u1eb7c b\u1ecb \u0103n m\u00f2n l\u00e0 t\u1ea7n su\u1ea5t nh\u1ea5t v\u00e0 d\u1ec5 s\u1eeda nh\u1ea5t trong nh\u1eefng \u0111i\u1ec1u n\u00e0y, v\u00e0 n\u00f3 th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng m\u1ea5t c\u00e2n b\u1eb1ng tr\u1edf n\u00ean t\u1ed3i t\u1ec7 h\u01a1n d\u01b0\u1edbi t\u1ea3i khi k\u1ebft h\u1ee3p n\u00f3ng l\u00ean.<\/p>\n<h3>Nguy\u00ean nh\u00e2n N\u1ed9i b\u1ed9 \u0110\u1ed9ng c\u01a1<\/h3>\n<p>Khi ngu\u1ed3n cung c\u1ea5p \u0111\u01b0\u1ee3c x\u00e1c minh c\u00e2n b\u1eb1ng nh\u01b0ng d\u00f2ng \u0111i\u1ec7n kh\u00f4ng, l\u1ed7i n\u1eb1m b\u00ean trong \u0111\u1ed9ng c\u01a1. C\u00e1c \u0111o\u1ea1n ng\u1eafn t\u1eeb v\u00f2ng \u0111\u1ebfn v\u00f2ng l\u00e0m gi\u1ea3m c\u00e1c v\u00f2ng hi\u1ec7u qu\u1ea3 trong m\u1ed9t pha; s\u1ef1 thay \u0111\u1ed5i s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ec3 l\u1ea1i c\u00e1c \u0111i\u1ec7n tr\u1edf cu\u1ed9n d\u00e2y h\u01a1i kh\u00f4ng b\u1eb1ng nhau; k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i suy gi\u1ea3m; v\u00e0 c\u00e1c m\u1ea1ch ng\u1eafn ho\u1eb7c m\u1edf b\u1ed9 ph\u1eadn trong m\u1ed9t cu\u1ed9n d\u00e2y b\u1ecb h\u01b0 h\u1ecfng t\u1ea1o ra asymmetry nghi\u00eam tr\u1ecdng \u2014 t\u1ea5t c\u1ea3 ch\u1ed3ng l\u1ea5p v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/stator-defects\/\">c\u00e1c l\u1ed7i cu\u1ed9n d\u00e2y \u0111\u1ecbnh t\u1eed<\/a>. \u0110\u1ed9 l\u1ec7ch khe kh\u00f4ng kh\u00ed \u2014 m\u1ed9t rotor kh\u00f4ng c\u0103n gi\u1eefa trong l\u1ed7 \u2014 l\u00e0 m\u1ed9t nguy\u00ean nh\u00e2n \u0111i\u1ec7n t\u1eeb li\u00ean quan t\u1ea1o ra l\u1ef1c t\u1eeb kh\u00f4ng c\u00e2n b\u1eb1ng c\u1ee7a ri\u00eang n\u00f3 v\u00e0 th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi c\u00e1c v\u1ea5n \u0111\u1ec1 cu\u1ed9n d\u00e2y.<\/p>\n<h2>5. T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn Hi\u1ec7u su\u1ea5t \u0110\u1ed9ng c\u01a1<\/h2>\n<h3>Qu\u00e1 nhi\u1ec7t<\/h3>\n<p>Qu\u00e1 n\u00f3ng l\u00e0 h\u1ec7 qu\u1ea3 nghi\u00eam tr\u1ecdng nh\u1ea5t v\u00e0 c\u01a1 ch\u1ebf m\u00e0 qua \u0111\u00f3 m\u1ea5t c\u00e2n b\u1eb1ng l\u00e0m h\u1ecfng \u0111\u1ed9ng c\u01a1. S\u1ef1 kh\u00f4ng \u0111\u1ed1i x\u1ee9ng t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n th\u1ee9 t\u1ef1 \u00e2m g\u00e2y t\u1ea3n nhi\u1ec7t b\u1ed5 sung, trong khi m\u1ed9t pha ch\u1ecbu d\u00f2ng \u0111i\u1ec7n l\u1edbn h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi thi\u1ebft k\u1ebf. S\u1ef1 t\u0103ng nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng t\u1ef7 l\u1ec7 v\u1edbi nguy\u00ean nh\u00e2n: quy t\u1eafc th\u1ef1c t\u1ebf cho r\u1eb1ng m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p 3% c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 t\u0103ng nhi\u1ec7t \u0111\u1ed9 qu\u1ea5n d\u00e2y 18\u201325%. V\u00ec tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1ch \u0111i\u1ec7n x\u1ea5p x\u1ec9 gi\u1ea3m m\u1ed9t n\u1eeda c\u1ee9 m\u1ed7i t\u0103ng th\u00eam 10 \u00b0C, k\u1ebft qu\u1ea3 l\u00e0 l\u00e3o h\u00f3a c\u00e1ch \u0111i\u1ec7n nhanh ch\u00f3ng v\u00e0 h\u1ecfng h\u00f3c s\u1edbm \u2014 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p 3% c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd \u0111\u1ed9ng c\u01a1 \u0111\u1ebfn 50%.<\/p>\n<h3>Hi\u1ec7u su\u1ea5t, H\u1ec7 s\u1ed1 C\u00f4ng su\u1ea5t v\u00e0 Chi ph\u00ed N\u0103ng l\u01b0\u1ee3ng<\/h3>\n<p>M\u1ea5t c\u00e2n b\u1eb1ng l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t th\u00f4ng qua d\u00f2ng l\u01b0u th\u00f4ng v\u00e0 d\u00f2ng \u0111i\u1ec7n th\u1ee9 t\u1ef1 \u00e2m kh\u00f4ng th\u1ef1c hi\u1ec7n c\u00f4ng h\u1eefu \u00edch, l\u00e0m gi\u1ea3m h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t, v\u00e0 t\u0103ng ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng t\u1ed5ng th\u1ec3 \u2014 m\u1ea5t c\u00e2n b\u1eb1ng v\u1eeba ph\u1ea3i \u0111i\u1ec3n h\u00ecnh c\u00f3 chi ph\u00ed 1\u20132% v\u1ec1 hi\u1ec7u su\u1ea5t. L\u01b0\u1ee3ng c\u00f4ng su\u1ea5t b\u1ed5 sung d\u1ec5 b\u1ecb \u0111\u00e1nh gi\u00e1 th\u1ea5p trong n\u0103m ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c; <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/three-phase-motor-power\/\">M\u00e1y t\u00ednh c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1 ba pha<\/a> gi\u00fap \u0111\u1ecbnh l\u01b0\u1ee3ng c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o b\u1ed5 sung m\u00e0 m\u1ea5t c\u00e2n b\u1eb1ng \u0111ang l\u00e3ng ph\u00ed.<\/p>\n<h3>Dao \u0111\u1ed9ng M\u00f4 men Xo\u1eafn v\u00e0 Rung \u0111\u1ed9ng<\/h3>\n<p>V\u1ec1 m\u1eb7t \u0111i\u1ec7n, tr\u01b0\u1eddng th\u1ee9 t\u1ef1 \u00e2m t\u1ea1o ra m\u00f4 men xo\u1eafn xung \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 d\u00e2y hai l\u1ea7n khi\u1ebfn <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/torsional-vibration\/\">rung \u0111\u1ed9ng xo\u1eafn<\/a> trong h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng v\u00e0 c\u00f3 th\u1ec3 k\u00edch th\u00edch <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/resonance\/\">c\u00e1c dao \u0111\u1ed9ng c\u1ed9ng h\u01b0\u1edfng<\/a>. Theo h\u01b0\u1edbng b\u00e1n k\u00ednh, c\u00f9ng l\u1ef1c t\u00e1c d\u1ee5ng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng rung \u0111\u1ed9ng 100\/120 Hz \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 \u1edf tr\u00ean, c\u00f3 bi\u00ean \u0111\u1ed9 t\u1ef7 l\u1ec7 v\u1edbi m\u1ee9c \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng v\u00e0 d\u1ec5 b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi l\u1ed7i stator ho\u1eb7c l\u1ef1c t\u1eeb h\u1ecdc v\u00ec ch\u00fang \u0111\u1ec1u \u1edf c\u00f9ng c\u00e1c t\u1ea7n s\u1ed1 \u0111i\u1ec7n.<\/p>\n<h3>Tu\u1ed5i th\u1ecd D\u1ecbch v\u1ee5 Gi\u1ea3m v\u00e0 Gi\u1ea3m C\u00f4ng su\u1ea5t<\/h3>\n<p>K\u1ebft h\u1ee3p l\u1ea1i, \u1ee9ng su\u1ea5t nhi\u1ec7t l\u00e0m r\u00fat ng\u1eafn tu\u1ed5i th\u1ecd c\u00e1ch \u0111i\u1ec7n v\u00e0 bu\u1ed9c \u0111\u1ed9ng c\u01a1 ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi c\u00f4ng su\u1ea5t danh \u0111\u1ecbnh c\u1ee7a n\u00f3. NEMA gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y tr\u1ef1c ti\u1ebfp v\u1edbi m\u1ed9t <strong>\u0111\u01b0\u1eddng cong gi\u1ea3m c\u00f4ng su\u1ea5t<\/strong>: tr\u00ean m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p 1% c\u00f4ng su\u1ea5t kh\u1ea3 d\u1ee5ng c\u1ee7a \u0111\u1ed9ng c\u01a1 ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1ea3m, v\u00e0 \u1edf m\u1ea5t c\u00e2n b\u1eb1ng 5% h\u1ec7 s\u1ed1 gi\u1ea3m c\u00f4ng su\u1ea5t r\u01a1i xu\u1ed1ng kho\u1ea3ng 0,75 \u2014 ngh\u0129a l\u00e0 m\u1ed9t ph\u1ea7n t\u01b0 c\u00f4ng su\u1ea5t d\u1ef1 \u0111\u1ecbnh c\u1ee7a \u0111\u1ed9ng c\u01a1 b\u1ecb hy sinh ch\u1ec9 \u0111\u1ec3 gi\u1eef n\u00f3 trong gi\u1edbi h\u1ea1n nhi\u1ec7t.<\/p>\n<h2>6. Gi\u1edbi h\u1ea1n NEMA v\u00e0 IEC v\u1ec1 M\u1ea5t c\u00e2n b\u1eb1ng \u0110i\u1ec7n \u00e1p v\u00e0 D\u00f2ng \u0111i\u1ec7n<\/h2>\n<p>Hai ti\u00eau chu\u1ea9n x\u00e1c \u0111\u1ecbnh c\u00e1c gi\u1edbi h\u1ea1n ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c, v\u00e0 ch\u00fang s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh ngh\u0129a h\u01a1i kh\u00e1c nhau, v\u00ec v\u1eady c\u1ea7n \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c v\u1ec1 ti\u00eau chu\u1ea9n n\u00e0o m\u00e0 ph\u00e9p \u0111o tu\u00e2n theo.<\/p>\n<p><strong>NEMA MG-1<\/strong> \u0111\u1ecbnh ngh\u0129a m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p l\u00e0 \u0111\u1ed9 l\u1ec7ch t\u1ed1i \u0111a t\u1eeb trung b\u00ecnh chia cho trung b\u00ecnh (c\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong to\u00e0n b\u1ed9 b\u00e0i vi\u1ebft n\u00e0y) v\u00e0 khuy\u1ebfn c\u00e1o v\u1eadn h\u00e0nh \u0111\u1ed9ng c\u01a1 tr\u00ean cung c\u1ea5p v\u1edbi kh\u00f4ng qu\u00e1 <strong>m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p 1%<\/strong>. Tr\u00ean m\u1ee9c \u0111\u00f3, NEMA y\u00eau c\u1ea7u \u0111\u1ed9ng c\u01a1 ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1ea3m c\u00f4ng su\u1ea5t theo \u0111\u01b0\u1eddng cong \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 c\u1ee7a n\u00f3; n\u00f3 r\u00f5 r\u00e0ng khuy\u00ean <em>so v\u1edbi<\/em> kh\u00f4ng \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh \u0111\u1ed9ng c\u01a1 \u1edf n\u01a1i m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t qu\u00e1 5%.<\/p>\n<p><strong>IEC<\/strong> s\u1eed d\u1ee5ng \u0111\u1ecbnh ngh\u0129a th\u00e0nh ph\u1ea7n \u0111\u1ed1i x\u1ee9ng \u2014 t\u1ef7 l\u1ec7 c\u1ee7a \u0111i\u1ec7n \u00e1p th\u1ee9 t\u1ef1 \u00e2m so v\u1edbi \u0111i\u1ec7n \u00e1p th\u1ee9 t\u1ef1 d\u01b0\u01a1ng \u2014 v\u00e0 th\u01b0\u1eddng ch\u1ecbu \u0111\u01b0\u1ee3c l\u00ean \u0111\u1ebfn kho\u1ea3ng <strong>2%<\/strong> trong ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c. \u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea5t c\u00e2n b\u1eb1ng nh\u1ecf \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y trong th\u1ef1c t\u1ebf, hai \u0111\u1ecbnh ngh\u0129a cho c\u00e1c con s\u1ed1 t\u01b0\u01a1ng t\u1ef1, nh\u01b0ng \u0111\u1ec3 b\u00e1o c\u00e1o v\u00e0 ki\u1ec3m tra ch\u1ea5p nh\u1eadn, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i tr\u00edch d\u1eabn \u0111\u1ecbnh ngh\u0129a n\u00e0o.<\/p>\n<p>\u0110\u1ed1i v\u1edbi d\u00f2ng \u0111i\u1ec7n, kh\u00f4ng c\u00f3 gi\u1edbi h\u1ea1n ph\u1ed5 qu\u00e1t duy nh\u1ea5t, nh\u01b0ng m\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i l\u00e0 gi\u1eef m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n d\u01b0\u1edbi kho\u1ea3ng <strong>10%<\/strong>, \u0111i\u1ec1u tra cao h\u01a1n \u0111i\u1ec1u \u0111\u00f3, v\u00e0 coi b\u1ea5t k\u1ef3 \u0111i\u1ec1u g\u00ec v\u01b0\u1ee3t qu\u00e1 n\u00f3 l\u00e0 m\u1ed9t l\u1ed7i \u0111ang ph\u00e1t tri\u1ec3n. Do kh\u1ea3 n\u0103ng khu\u1ebfch \u0111\u1ea1i t\u1eeb s\u00e1u \u0111\u1ebfn m\u01b0\u1eddi l\u1ea7n, gi\u1eef m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p d\u01b0\u1edbi m\u1ee5c ti\u00eau NEMA 1% l\u00e0 c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 gi\u1eef m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n trong d\u1ea3i n\u00e0y. The <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/motor-nameplate-current\/\">M\u00e1y t\u00ednh d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c c\u1ee7a \u0111\u1ed9ng c\u01a1<\/a> cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n t\u1ea3i \u0111\u1ea7y \u0111\u1ee7 d\u1ef1 ki\u1ebfn \u0111\u1ec3 so s\u00e1nh m\u1ed7i pha.<\/p>\n<h2>7. Ph\u00e1t hi\u1ec7n v\u00e0 \u0110o l\u01b0\u1eddng<\/h2>\n<h3>\u0110\u1ecdc \u0110i\u1ec7n \u00e1p v\u00e0 D\u00f2ng \u0111i\u1ec7n<\/h3>\n<p>B\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c ph\u00e9p \u0111o \u0111i\u1ec7n, \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u1edbi \u0111\u1ed9ng c\u01a1 ch\u1ea1y d\u01b0\u1edbi t\u1ea3i b\u00ecnh th\u01b0\u1eddng. \u0110\u1ecdc ba \u0111i\u1ec7n \u00e1p gi\u1eefa d\u00e2y \u1edf <em>c\u1ef1c \u0111\u1ed9ng c\u01a1<\/em> \u2014 kh\u00f4ng ph\u1ea3i b\u1ea3ng c\u1ea5p \u2014 \u0111\u1ec3 t\u00ednh \u0111\u1ebfn s\u1ee5t \u00e1p d\u1ecdc theo d\u00e2y c\u1ea5p, sau \u0111\u00f3 t\u00ednh to\u00e1n trung b\u00ecnh v\u00e0 ph\u1ea7n tr\u0103m sai l\u1ec7ch. Ti\u1ebfp theo l\u00e0 \u0111\u1ecdc c\u1ea3m bi\u1ebfn k\u1eb9p d\u00f2ng \u0111i\u1ec7n m\u1ed7i pha, so s\u00e1nh v\u1edbi gi\u00e1 tr\u1ecb d\u1ef1 ki\u1ebfn <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/motor-nameplate-current\/\">d\u00f2ng \u0111i\u1ec7n t\u1ea3i to\u00e0n ph\u1ea7n tr\u00ean b\u1ea3ng danh x\u01b0ng<\/a>, v\u00e0 t\u00ednh to\u00e1n m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n. Ghi ch\u00e9p v\u00e0 theo d\u00f5i xu h\u01b0\u1edbng c\u1ea3 hai gi\u00e1 tr\u1ecb theo th\u1eddi gian l\u00e0 nh\u1eefng g\u00ec chuy\u1ec3n \u0111\u1ed5i m\u1ed9t b\u00e0i \u0111\u1ecdc m\u1ed9t l\u1ea7n th\u00e0nh m\u1ed9t ch\u1ec9 b\u00e1o c\u1ea3nh b\u00e1o s\u1edbm.<\/p>\n<h3>Ph\u00e2n t\u00edch rung \u0111\u1ed9ng<\/h3>\n<p>\u0110o l\u01b0\u1eddng rung \u0111\u1ed9ng x\u00e1c nh\u1eadn li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n c\u00f3 th\u1ef1c s\u1ef1 ti\u1ebfp c\u1eadn c\u1ea5u tr\u00fac v\u00e0 m\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng nh\u01b0 th\u1ebf n\u00e0o. Ghi nh\u1eadn <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a> t\u1ea1i khung \u0111\u1ed9ng c\u01a1 v\u00e0 t\u00ecm ki\u1ebfm \u0111\u1ec9nh cao \u1edf ch\u00ednh x\u00e1c 100 Hz ho\u1eb7c 120 Hz, so s\u00e1nh bi\u00ean \u0111\u1ed9 c\u1ee7a n\u00f3 v\u1edbi \u0111\u01b0\u1eddng c\u01a1 s\u1edf c\u1ee7a m\u00e1y, v\u00e0 s\u1eed d\u1ee5ng c\u00e1c b\u00e0i ki\u1ec3m tra \u0111\u1ed9 ch\u00ednh x\u00e1c t\u1ea7n s\u1ed1 v\u00e0 t\u1eaft \u0111i\u1ec7n c\u1ee7a Ph\u1ea7n 3 \u0111\u1ec3 t\u00e1ch n\u00f3 kh\u1ecfi 2\u00d7 c\u01a1 h\u1ecdc do kh\u00f4ng th\u1eb3ng h\u00e0ng. A two-channel <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-analyzer\/\">m\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng<\/a> v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i ph\u1ed5 t\u1ed1t l\u00e0 c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p, b\u1edfi v\u00ec t\u00e1ch m\u1ed9t \u0111\u1ec9nh \u0111\u01b0\u1eddng 100 Hz kh\u1ecfi m\u1ed9t \u0111\u1ec9nh c\u01a1 h\u1ecdc 98\u201399 Hz \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ph\u00e2n gi\u1ea3i m\u00e0 m\u1ed9t m\u00e1y \u0111o m\u1ee9c t\u1ed5ng th\u1ec3 \u0111\u01a1n gi\u1ea3n kh\u00f4ng th\u1ec3 cung c\u1ea5p.<\/p>\n<h3>Gi\u00e1m s\u00e1t nhi\u1ec7t<\/h3>\n<p>Cu\u1ed1i c\u00f9ng, \u0111o nhi\u1ec7t \u0111\u1ed9 cu\u1ed9n d\u00e2y ho\u1eb7c khung v\u00e0 t\u00ecm ki\u1ebfm s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng nhi\u1ec7t \u0111\u1ed9 gi\u1eefa c\u00e1c pha ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 t\u1ed5ng th\u1ec3 cao h\u01a1n t\u1ea3i y\u00eau c\u1ea7u. V\u00ec nhi\u1ec7t l\u00e0 c\u01a1 ch\u1ebf m\u00e0 qua \u0111\u00f3 m\u1ea5t c\u00e2n b\u1eb1ng g\u00e2y ra thi\u1ec7t h\u1ea1i, m\u1ed9t b\u1ea5t th\u01b0\u1eddng nhi\u1ec7t th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n c\u00f9ng v\u1edbi \u2014 ho\u1eb7c th\u1eadm ch\u00ed tr\u01b0\u1edbc \u2014 c\u00e1c tri\u1ec7u ch\u1ee9ng \u0111i\u1ec7n.<\/p>\n<h2>8. Ch\u1ea9n \u0111o\u00e1n v\u1edbi M\u00e1y ph\u00e2n t\u00edch Rung \u0111\u1ed9ng<\/h2>\n<p>Tr\u00ean hi\u1ec7n tr\u01b0\u1eddng, ch\u1eef k\u00fd \u0111i\u1ec7n c\u1ee7a m\u1ea5t c\u00e2n b\u1eb1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi t\u1ea7n s\u1ed1 kh\u00f3a m\u1ea1ng ch\u00ednh x\u00e1c c\u1ee7a n\u00f3, v\u00e0 gi\u1ea3i quy\u1ebft n\u00f3 m\u1ed9t c\u00e1ch s\u1ea1ch s\u1ebd l\u00e0 c\u00f4ng vi\u1ec7c c\u1ee7a m\u00e1y ph\u00e2n t\u00edch c\u1ea7m tay. M\u1ed9t thi\u1ebft b\u1ecb hai k\u00eanh nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> \u0111o rung \u0111\u1ed9ng t\u1ea1i khung \u0111\u1ed9ng c\u01a1 v\u00e0 cho th\u1ea5y li\u1ec7u \u0111\u1ec9nh chi\u1ebfm \u01b0u th\u1ebf c\u00f3 \u0111\u1eb7t tr\u00ean d\u00e2y kh\u00f3a 100 Hz ho\u1eb7c 120 Hz \u2014 ch\u1ec9 ra nguy\u00ean nh\u00e2n \u0111i\u1ec7n \u2014 hay 2\u00d7 t\u1ed1c \u0111\u1ed9 ch\u1ea1y, \u0111i\u1ec1u n\u00e0y s\u1ebd ch\u1ec9 ra kh\u00f4ng th\u1eb3ng h\u00e0ng. X\u00e1c nh\u1eadn quy\u1ebft \u0111\u1ecbnh v\u1eabn l\u00e0 b\u00e0i ki\u1ec3m tra t\u1eaft \u0111i\u1ec7n: v\u1edbi ph\u1ed5 tr\u1ef1c ti\u1ebfp tr\u00ean m\u00e0n h\u00ecnh, c\u1eaft \u0111i\u1ec7n v\u00e0 xem \u0111\u1ec9nh nghi ng\u1edd bi\u1ebfn m\u1ea5t ngay l\u1eadp t\u1ee9c n\u1ebfu n\u00f3 l\u00e0 \u0111i\u1ec7n, ho\u1eb7c c\u00f4i d\u1ecdc theo rotor n\u1ebfu n\u00f3 l\u00e0 c\u01a1 h\u1ecdc. The <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/motor-electrical-frequencies\/\">M\u00e1y t\u00ednh t\u1ea7n su\u1ea5t l\u1ed7i \u0111i\u1ec7n \u0111\u1ed9ng c\u01a1<\/a> li\u1ec7t k\u00ea c\u00e1c t\u1ea7n s\u1ed1 li\u00ean quan \u0111\u1ebfn d\u00e2y ch\u00ednh x\u00e1c \u2014 2\u00d7 d\u00e2y, d\u1ea3i b\u00ean qua c\u1ef1c v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n li\u00ean quan \u0111\u1ebfn tr\u01b0\u1ee3t \u2014 \u0111\u1ec3 t\u00ecm ki\u1ebfm, chuy\u1ec3n m\u1ed9t ph\u1ed5 t\u1ea7n s\u1ed1 th\u1ea5p kh\u00f3 hi\u1ec3u th\u00e0nh danh s\u00e1ch ki\u1ec3m tra.<\/p>\n<h2>9. S\u1eeda ch\u1eefa, Ph\u00f2ng ch\u1ed1ng v\u00e0 Gi\u00e1m s\u00e1t<\/h2>\n<h3>S\u1eeda ch\u1eefa M\u1ea5t c\u00e2n b\u1eb1ng Ph\u00eda c\u1ea5p<\/h3>\n<p>Khi m\u1ea5t c\u00e2n b\u1eb1ng c\u00f3 m\u1eb7t \u1edf \u0111\u01b0\u1eddng v\u00e0o d\u1ecbch v\u1ee5, h\u00e3y li\u00ean h\u1ec7 v\u1edbi c\u00f4ng ty cung c\u1ea5p \u0111i\u1ec7n; n\u1ebfu kh\u00f4ng l\u1ed7i trong t\u00f2a nh\u00e0. Ki\u1ec3m tra v\u00e0 si\u1ebft ch\u1eb7t m\u1ecdi k\u1ebft n\u1ed1i trong h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i, x\u00e1c minh r\u1eb1ng c\u00e1c c\u1ea7u ch\u00ec v\u00e0 b\u1ed9 ng\u1eaft an to\u00e0n, ph\u00e2n ph\u1ed1i l\u1ea1i c\u00e1c t\u1ea3i m\u1ed9t pha \u0111\u1ec1u tr\u00ean ba pha, v\u00e0 ki\u1ec3m tra c\u00e0i \u0111\u1eb7t taps bi\u1ebfn \u00e1p. M\u1ed9t ph\u1ea7n \u0111\u00e1ng ng\u1ea1c nhi\u00ean c\u1ee7a m\u1ea5t c\u00e2n b\u1eb1ng trong nh\u00e0 m\u00e1y kh\u00f4ng c\u00f3 g\u00ec h\u01a1n l\u00e0 m\u1ed9t c\u1ef1c b\u1ecb l\u1ecfng ho\u1eb7c b\u1ecb oxy h\u00f3a ch\u1ec9 mang \u0111i\u1ec7n tr\u1edf cao h\u01a1n h\u00e0ng x\u00f3m.<\/p>\n<h3>S\u1eeda ch\u1eefa c\u00e1c V\u1ea5n \u0111\u1ec1 Ph\u00eda \u0111\u1ed9ng c\u01a1<\/h3>\n<p>N\u1ebfu ngu\u1ed3n c\u1ea5p \u0111\u01b0\u1ee3c x\u00e1c minh c\u00e2n b\u1eb1ng nh\u01b0ng d\u00f2ng \u0111i\u1ec7n hi\u1ec7n t\u1ea1i kh\u00f4ng, tr\u01b0\u1edbc ti\u00ean h\u00e3y l\u00e0m s\u1ea1ch v\u00e0 si\u1ebft ch\u1eb7t c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ea7u cu\u1ed1i v\u00e0 c\u00e1p \u0111\u1ed9ng c\u01a1, sau \u0111\u00f3 ki\u1ec3m tra c\u00e1c l\u1ed7i cu\u1ed9n d\u00e2y b\u1eb1ng ph\u00e2n t\u00edch \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 ch\u1eef k\u00fd d\u00f2ng \u0111i\u1ec7n. M\u1ed9t l\u1ed7i cu\u1ed9n d\u00e2y n\u1ed9i b\u1ed9 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn c\u00f3 ngh\u0129a l\u00e0 qu\u1ea5n l\u1ea1i ho\u1eb7c thay th\u1ebf \u0111\u1ed9ng c\u01a1 \u2014 kh\u00f4ng c\u00f3 c\u00e1ch s\u1eeda ch\u1eefa t\u1ea1i ch\u1ed7 cho c\u00e1c l\u1ed7i ng\u1eafn m\u1ea1ch t\u1eeb v\u00f2ng sang v\u00f2ng.<\/p>\n<h3>Gi\u1ea3m C\u00f4ng Su\u1ea5t, L\u1eafp \u0110\u1eb7t v\u00e0 Gi\u00e1m S\u00e1t Li\u00ean T\u1ee5c<\/h3>\n<p>Khi kh\u00f4ng th\u1ec3 lo\u1ea1i b\u1ecf s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng, h\u00e3y tu\u00e2n theo \u0111\u01b0\u1eddng cong gi\u1ea3m c\u00f4ng su\u1ea5t c\u1ee7a NEMA v\u00e0 gi\u1ea3m t\u1ea3i \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c cu\u1ed9n d\u00e2y, gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 ch\u1eb7t ch\u1ebd. Ng\u0103n ng\u1eeba t\u00e1i ph\u00e1t t\u1ea1i th\u1eddi \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t b\u1eb1ng c\u00e1ch x\u00e1c minh c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p t\u1ea1i c\u00e1c \u0111\u1ea7u cu\u1ed1i \u0111\u1ed9ng c\u01a1 tr\u01b0\u1edbc khi c\u1ea5p \u0111i\u1ec7n, \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u00e1c d\u00e2y d\u1eabn \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u01a1i \u0111i\u1ec7n \u00e1p, v\u00e0 x\u00e1c nh\u1eadn k\u1ebft n\u1ed1i wye-so-delta ch\u00ednh x\u00e1c. Trong d\u1ecbch v\u1ee5, l\u1ea5y \u0111\u1ecdc \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh k\u1ef3, t\u00edch h\u1ee3p ch\u00fang v\u00e0o m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/condition-monitoring\/\">gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng<\/a> quy tr\u00ecnh v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/trend-analysis\/\">ph\u00e2n t\u00edch xu h\u01b0\u1edbng<\/a>, theo d\u00f5i c\u00e1c c\u1ea7u ch\u00ec b\u1ecb n\u1ed5 ho\u1eb7c cbreaker b\u1ecb k\u00edch ho\u1ea1t, v\u00e0 ti\u1ebfn h\u00e0nh kh\u1ea3o s\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n b\u1ea5t c\u1ee9 khi n\u00e0o c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u1ed9ng c\u01a1 t\u00e1i ph\u00e1t. Coi s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng nh\u01b0 m\u1ed9t tham s\u1ed1 c\u1ea7n \u0111\u01b0\u1ee3c theo d\u00f5i \u2014 thay v\u00ec m\u1ed9t l\u1ed7i c\u1ea7n \u0111\u01b0\u1ee3c s\u1eeda ch\u1eefa sau khi h\u1ecfng h\u00f3c \u2014 l\u00e0 \u0111i\u1ec1u gi\u1eef cho n\u00f3 kh\u00f4ng \u00e2m th\u1ea7m r\u00fat ng\u1eafn tu\u1ed5i th\u1ecd c\u1ee7a to\u00e0n b\u1ed9 qu\u1ea7n th\u1ec3 \u0111\u1ed9ng c\u01a1.<\/p>\n<h2>10. C\u00e1c C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p<\/h2>\n<p><strong>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p v\u00e0 m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n l\u00e0 g\u00ec?<\/strong><br \/>\nM\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p l\u00e0 s\u1ef1 kh\u00f4ng b\u1eb1ng nhau c\u1ee7a ba \u0111i\u1ec7n \u00e1p c\u1ea5p v\u00e0 th\u01b0\u1eddng l\u00e0 nguy\u00ean nh\u00e2n; m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n l\u00e0 s\u1ef1 kh\u00f4ng b\u1eb1ng nhau c\u1ee7a ba d\u00f2ng pha v\u00e0 l\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i. B\u1edfi v\u00ec tr\u1edf kh\u00e1ng tr\u00ecnh t\u1ef1 \u00e2m c\u1ee7a \u0111\u1ed9ng c\u01a1 th\u1ea5p, m\u1ed9t s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p nh\u1ecf s\u1ebd t\u1ea1o ra s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n l\u1edbn g\u1ea5p s\u00e1u \u0111\u1ebfn m\u01b0\u1eddi l\u1ea7n, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao d\u00f2ng \u0111i\u1ec7n l\u00e0 ph\u00e9p \u0111o c\u1ea3nh b\u00e1o s\u1edbm nh\u1ea1y c\u1ea3m h\u01a1n.<\/p>\n<p><strong>\u1ede t\u1ea7n s\u1ed1 n\u00e0o th\u00ec s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n xu\u1ea5t hi\u1ec7n trong dao \u0111\u1ed9ng?<\/strong><br \/>\n\u1ede g\u1ea5p \u0111\u00f4i t\u1ea7n s\u1ed1 l\u01b0\u1edbi \u0111i\u1ec7n \u2014 100 Hz tr\u00ean ngu\u1ed3n c\u1ea5p 50 Hz ho\u1eb7c 120 Hz tr\u00ean ngu\u1ed3n c\u1ea5p 60 Hz \u2014 b\u1edfi v\u00ec tr\u01b0\u1eddng tr\u00ecnh t\u1ef1 \u00e2m \u0111i\u1ec1u bi\u1ebfn l\u1ef1c t\u1eeb tr\u01b0\u1eddng trong kho\u1ea3ng kh\u00f4ng kh\u00ed \u1edf t\u1ed1c \u0111\u1ed9 \u0111\u00f3. C\u00e1c l\u1ed7i \u0111i\u1ec7n li\u00ean quan \u0111\u1ebfn rotor th\u00eam c\u00e1c d\u1ea3i b\u00ean xung quanh t\u1ed1c \u0111\u1ed9 ch\u1ea1y 1\u00d7 \u1edf t\u1ea7n s\u1ed1 \u0111i qua c\u1ef1c tr\u01b0\u1ee3t.<\/p>\n<p><strong>L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 ph\u00e2n bi\u1ec7t s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n v\u1edbi s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng c\u01a1 h\u1ecdc ho\u1eb7c c\u0103n l\u1ed7i?<\/strong><br \/>\nS\u1eed d\u1ee5ng b\u00e0i ki\u1ec3m tra t\u1eaft ngu\u1ed3n: c\u1eaft m\u1ea5t \u0111i\u1ec7n \u0111\u1ebfn \u0111\u1ed9ng c\u01a1 \u0111ang ch\u1ea1y trong khi quan s\u00e1t ph\u1ed5. M\u1ed9t th\u00e0nh ph\u1ea7n \u0111i\u1ec7n th\u1ef1c s\u1ef1 s\u1ebd bi\u1ebfn m\u1ea5t t\u1ee9c th\u00ec, trong khi m\u1ed9t th\u00e0nh ph\u1ea7n c\u01a1 h\u1ecdc s\u1ebd suy gi\u1ea3m khi rotor tr\u01b0\u1ee3t xu\u1ed1ng. M\u1ed9t \u0111\u1ec9nh kh\u00f3a l\u01b0\u1edbi t\u1ea1i ch\u00ednh x\u00e1c 100\/120 Hz kh\u00f4ng thay \u0111\u1ed5i theo t\u1ea3i c\u0169ng l\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o \u0111i\u1ec7n \u0111\u00e1ng tin c\u1eady.<\/p>\n<p><strong>M\u1ee9c \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p n\u00e0o l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c?<\/strong><br \/>\nNEMA MG-1 khuy\u1ebfn c\u00e1o gi\u1eef s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p d\u01b0\u1edbi 1% v\u00e0 y\u00eau c\u1ea7u gi\u1ea3m c\u00f4ng su\u1ea5t tr\u00ean \u0111\u00f3, khuy\u00ean ch\u1ed1ng l\u1ea1i ho\u1ea1t \u0111\u1ed9ng v\u01b0\u1ee3t qu\u00e1 5%. IEC, s\u1eed d\u1ee5ng \u0111\u1ecbnh ngh\u0129a th\u00e0nh ph\u1ea7n \u0111\u1ed1i x\u1ee9ng, ch\u1ea5p nh\u1eadn t\u1edbi kho\u1ea3ng 2%. Gi\u1eef s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p d\u01b0\u1edbi 1% l\u00e0 c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 gi\u1eef s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n trong gi\u1edbi h\u1ea1n t\u1ea1i ch\u1ed7 th\u01b0\u1eddng d\u00f9ng l\u00e0 10%.<\/p>\n<p><strong>T\u1ea1i sao m\u1ed9t s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p nh\u1ecf l\u1ea1i g\u00e2y ra qu\u00e1 nhi\u1ec1u nhi\u1ec7t?<\/strong><br \/>\nT\u00ednh kh\u00f4ng \u0111\u1ed1i x\u1ee9ng t\u1ea1o ra c\u00e1c d\u00f2ng \u0111i\u1ec7n tr\u00ecnh t\u1ef1 \u00e2m ch\u1ea3y qua tr\u1edf kh\u00e1ng tr\u00ecnh t\u1ef1 \u00e2m th\u1ea5p c\u1ee7a \u0111\u1ed9ng c\u01a1, t\u1ea3n nhi\u1ec7t d\u01b0 th\u1eeba, trong khi m\u1ed9t pha b\u1ecb qu\u00e1 t\u1ea3i. S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p 3% c\u00f3 th\u1ec3 n\u00e2ng nhi\u1ec7t \u0111\u1ed9 cu\u1ed9n d\u00e2y l\u00ean 18\u201325% v\u00e0 s\u1ebd gi\u1ea3m tu\u1ed5i th\u1ecd c\u00e1ch \u0111i\u1ec7n xu\u1ed1ng kho\u1ea3ng m\u1ed9t n\u1eeda.<\/p>\n<p><strong>M\u00e1y ph\u00e2n t\u00edch dao \u0111\u1ed9ng di \u0111\u1ed9ng c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n kh\u00f4ng?<\/strong><br \/>\nC\u00f3. M\u00e1y ph\u00e2n t\u00edch hai k\u00eanh nh\u01b0 Balanset-1A gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c \u0111\u1ec9nh kh\u00f3a l\u01b0\u1edbi 100\/120 Hz, cho ph\u00e9p b\u1ea1n ch\u1ea1y b\u00e0i ki\u1ec3m tra t\u1eaft ngu\u1ed3n, v\u00e0 \u0111\u1ecdc c\u00e1c d\u1ea3i \u0111i qua c\u1ef1c ph\u00e2n bi\u1ec7t s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng ph\u00eda c\u1ea5p v\u1edbi l\u1ed7i rotor \u2014 t\u1ea5t c\u1ea3 m\u00e0 kh\u00f4ng c\u1ea7n m\u1ed9t thi\u1ebft b\u1ecb ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n ri\u00eang bi\u1ec7t.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Quay l\u1ea1i M\u1ee5c l\u1ee5c ch\u00ednh<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n, \u0111i\u1ec7n \u00e1p ho\u1eb7c d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ec1u trong h\u1ec7 th\u1ed1ng \u0111\u1ed9ng c\u01a1 ba pha g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 nhi\u1ec7t, gi\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 rung \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 \u0111\u01b0\u1eddng d\u00e2y g\u1ea5p 2 l\u1ea7n.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-112","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/112\/revisions"}],"predecessor-version":[{"id":101554,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/112\/revisions\/101554"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}