{"id":683054,"date":"2024-07-22T07:00:19","date_gmt":"2024-07-22T06:00:19","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=683054"},"modified":"2024-07-22T07:00:19","modified_gmt":"2024-07-22T06:00:19","slug":"6-loai-bao-ve-qua-tai-nhiet-cho-dong-co","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/6-loai-bao-ve-qua-tai-nhiet-cho-dong-co\/","title":{"rendered":"6 Lo\u1ea1i B\u1ea3o V\u1ec7 Qu\u00e1 T\u1ea3i Nhi\u1ec7t Cho \u0110\u1ed9ng C\u01a1"},"content":{"rendered":"

6 Lo\u1ea1i B\u1ea3o V\u1ec7 Qu\u00e1 T\u1ea3i Nhi\u1ec7t Cho \u0110\u1ed9ng C\u01a1: T\u00ecm hi\u1ec3u s\u00e1u ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i nhi\u1ec7t hi\u1ec7u qu\u1ea3 gi\u00fap \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng b\u1ec1n v\u1eefng v\u00e0 an to\u00e0n h\u01a1n.<\/p>\n

\"6<\/p>\n

6 Lo\u1ea1i B\u1ea3o V\u1ec7 Qu\u00e1 T\u1ea3i Nhi\u1ec7t Cho \u0110\u1ed9ng C\u01a1<\/h2>\n

Trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i nhi\u1ec7t cho \u0111\u1ed9ng c\u01a1 l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. Qu\u00e1 t\u1ea3i nhi\u1ec7t c\u00f3 th\u1ec3 g\u00e2y h\u1ecfng h\u00f3c cho \u0111\u1ed9ng c\u01a1, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c gi\u1ea3m s\u00fat v\u00e0 th\u1eadm ch\u00ed l\u00e0 h\u1ecfng h\u00f3c ho\u00e0n to\u00e0n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 s\u00e1u lo\u1ea1i b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i nhi\u1ec7t ph\u1ed5 bi\u1ebfn cho \u0111\u1ed9ng c\u01a1.<\/p>\n

<\/p>\n

  • C\u1ea7u Ch\u00ec Nhi\u1ec7t<\/strong><\/li>\n

    <\/u1><\/p>\n

    C\u1ea7u ch\u00ec nhi\u1ec7t s\u1ebd ng\u1eaft m\u1ea1nh khi nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1t t\u1edbi ng\u01b0\u1ee1ng nh\u1ea5t \u0111\u1ecbnh. \u0110\u00e2y l\u00e0 lo\u1ea1i b\u1ea3o v\u1ec7 \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 d\u00e2n d\u1ee5ng.<\/p>\n

    <\/p>\n

  • Relay Nhi\u1ec7t<\/strong><\/li>\n

    <\/u1><\/p>\n

    Relay nhi\u1ec7t s\u1eed d\u1ee5ng c\u00e1c ti\u1ebfp \u0111i\u1ec3m \u0111\u1ec3 ng\u1eaft m\u1ea1ch khi nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n. Relay nhi\u1ec7t th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi qu\u00e1 t\u1ea3i nhi\u1ec7t.<\/p>\n

    <\/p>\n

  • C\u1ea3m Bi\u1ebfn Nhi\u1ec7t \u0111\u1ed9 (Thermistor)<\/strong><\/li>\n

    <\/u1><\/p>\n

    C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf theo nhi\u1ec7t \u0111\u1ed9. Lo\u1ea1i c\u1ea3m bi\u1ebfn n\u00e0y c\u00f3 th\u1ec3 g\u1eedi t\u00edn hi\u1ec7u \u0111\u1ebfn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 ng\u1eaft \u0111\u1ed9ng c\u01a1 khi nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t ng\u01b0\u1ee1ng an to\u00e0n.<\/p>\n

    <\/p>\n

  • M\u00e1y Ng\u1eaft T\u1eeb (Magnetic Circuit Breaker)<\/strong><\/li>\n

    <\/u1><\/p>\n

    M\u00e1y ng\u1eaft t\u1eeb s\u1eed d\u1ee5ng tr\u01b0\u1eddng t\u1eeb \u0111\u1ec3 ng\u1eaft m\u1ea1ch khi d\u00f2ng \u0111i\u1ec7n qu\u00e1 t\u1ea3i, g\u00e2y sinh nhi\u1ec7t. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 c\u0169ng kh\u00e1 ph\u1ed5 bi\u1ebfn trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n.<\/p>\n

    <\/p>\n

  • Bimetal Strip<\/strong><\/li>\n

    <\/u1><\/p>\n

    Bimetal Strip bao g\u1ed3m hai kim lo\u1ea1i kh\u00e1c nhau v\u1edbi h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c nhau. Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng, thanh bimetal s\u1ebd u\u1ed1n cong v\u00e0 ng\u1eaft m\u1ea1ch \u0111i\u1ec7n \u0111\u1ec3 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1.<\/p>\n

    <\/p>\n

  • Thermal Overload Relay<\/strong><\/li>\n

    <\/u1><\/p>\n

    \u0110\u00e2y l\u00e0 lo\u1ea1i relay s\u1eed d\u1ee5ng s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a bimetal \u0111\u1ec3 ng\u1eaft m\u1ea1ch. Khi nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed9ng c\u01a1 t\u0103ng l\u00ean, bimetal s\u1ebd u\u1ed1n cong v\u00e0 d\u1eabn t\u1edbi vi\u1ec7c ng\u1eaft m\u1ea1ch. Lo\u1ea1i relay n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c m\u00e1y c\u00f4ng nghi\u1ec7p.<\/p>\n","protected":false},"excerpt":{"rendered":"

    6 Lo\u1ea1i B\u1ea3o V\u1ec7 Qu\u00e1 T\u1ea3i Nhi\u1ec7t Cho \u0110\u1ed9ng C\u01a1: T\u00ecm hi\u1ec3u s\u00e1u ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i nhi\u1ec7t hi\u1ec7u qu\u1ea3 gi\u00fap \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng b\u1ec1n v\u1eefng v\u00e0 an to\u00e0n h\u01a1n.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\n6 Lo\u1ea1i B\u1ea3o V\u1ec7 Qu\u00e1 T\u1ea3i Nhi\u1ec7t Cho \u0110\u1ed9ng C\u01a1<\/title>\n<meta name=\"description\" content=\"6 Lo\u1ea1i B\u1ea3o V\u1ec7 Qu\u00e1 T\u1ea3i Nhi\u1ec7t Cho \u0110\u1ed9ng C\u01a1: T\u00ecm hi\u1ec3u s\u00e1u ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i nhi\u1ec7t hi\u1ec7u qu\u1ea3 gi\u00fap \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng b\u1ec1n v\u1eefng v\u00e0 an to\u00e0n h\u01a1n.\" \/>\n<meta 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