{"id":6098,"date":"2012-07-14T23:18:02","date_gmt":"2012-07-14T16:18:02","guid":{"rendered":"https:\/\/banbientan.com\/?p=6098"},"modified":"2012-07-14T23:18:02","modified_gmt":"2012-07-14T16:18:02","slug":"ul-508","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=6098","title":{"rendered":"UL 508"},"content":{"rendered":"<p><span style=\"font-size: large;\"><strong><span style=\"text-decoration: underline;\">UL 508<\/span><\/strong><\/span><br \/>\n<strong>1 Ph\u1ea1m vi<\/strong><br \/>\n1.1 C\u00e1c y\u00eau c\u1ea7u n\u00e0y bao qu\u00e1t c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ph\u1ee5 tr\u1ee3 kh\u00e1c \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng, d\u1eebng, \u0111i\u1ec1u ch\u1ec9nh, \u0111i\u1ec1u khi\u1ec3n ho\u1eb7c b\u1ea3o v\u1ec7 c\u00e1c \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n. C\u00e1c y\u00eau c\u1ea7u n\u00e0y c\u0169ng bao qu\u00e1t c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef ho\u1eb7c x\u1eed l\u00fd th\u00f4ng tin v\u00e0 \u0111\u01b0\u1ee3c cung c\u1ea5p v\u1edbi (c\u00e1c) ch\u1ee9c n\u0103ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 \u0111\u1ea7u ra. Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c v\u1ecb tr\u00ed th\u00f4ng th\u01b0\u1eddng tu\u00e2n theo Quy ch\u1ebf \u0110i\u1ec7n Qu\u1ed1c gia, NFPA 70.<br \/>\n1.2 Nh\u1eefng y\u00eau c\u1ea7u n\u00e0y bao qu\u00e1t c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ecbnh m\u1ee9c 1500 v\u00f4n tr\u1edf xu\u1ed1ng. C\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c bao qu\u00e1t trong c\u00e1c y\u00eau c\u1ea7u n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng t\u1eeb 0 \u0111\u1ebfn 40\u00b0C (32 &#8211; 104\u00b0F) tr\u1eeb khi \u0111\u01b0\u1ee3c ch\u1ec9 r\u00f5 c\u1ee5 th\u1ec3 \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00e1c.<br \/>\n1.3 X\u00f3a ng\u00e0y 2 th\u00e1ng 12, 2003<br \/>\n1.4 V\u00ed d\u1ee5 v\u1ec1 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong 1.1 l\u00e0:<br \/>\na) B\u1ed9 kh\u1edfi \u0111\u1ed9ng v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n th\u1ee7 c\u00f4ng, t\u1eeb v\u00e0 b\u00e1n d\u1eabn.<br \/>\nb) R\u01a1le qu\u00e1 t\u1ea3i nhi\u1ec7t, t\u1eeb v\u00e0 b\u00e1n d\u1eabn.<br \/>\nc) Tr\u1ea1m t\u1ef1 \u0111\u1ed9ng h\u00f3a, bao g\u1ed3m c\u00f4ng t\u1eafc ch\u1ecdn v\u00e0 \u0111\u00e8n b\u00e1o.<br \/>\nd) C\u00f4ng t\u1eafc m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n v\u00e0 r\u01a1le.<br \/>\ne) C\u00f4ng t\u1eafc phao, chuy\u1ec3n m\u1ea1ch l\u01b0u l\u01b0\u1ee3ng, \u00e1p l\u1ef1c v\u00e0 c\u00f4ng t\u1eafc v\u1eadn h\u00e0nh ch\u00e2n kh\u00f4ng.<br \/>\nf) \u0110i\u1ec7n tr\u1edf v\u00e0 bi\u1ebfn tr\u1edf.<br \/>\ng) C\u00f4ng t\u1eafc ti\u1ec7m c\u1eadn.<br \/>\nh) R\u01a1le th\u1eddi gian v\u00e0 c\u00f4ng t\u1eafc.<br \/>\ni) \u0111i\u1ec7n tr\u1edf v\u00e0 bi\u1ebfn tr\u1edf d\u00f9ng \u0111\u1ec3 \u0111\u1ed1t n\u00f3ng v\u00e0 th\u1eafp s\u00e1ng trong c\u00f4ng nghi\u1ec7p, k\u1ec3 c\u1ea3 c\u00e1c \u0111i\u1ec7n tr\u1edf v\u00e0 bi\u1ebfn tr\u1edf cho t\u1eeb tr\u01b0\u1eddng \u0111\u1ed9ng c\u01a1 m\u00e1y ph\u00e1t.<br \/>\nj) C\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ed1t n\u00f3ng v\u00e0 th\u1eafp s\u00e1ng trong c\u00f4ng nghi\u1ec7p.<br \/>\nk) R\u01a1le th\u1eddi gian b\u1eb1ng b\u00e1n d\u1eabn.<br \/>\nl) B\u1ed9 \u0111i\u1ec1u khi\u1ec3n l\u1eadp tr\u00ecnh.<br \/>\nm) H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng s\u1ed1.<br \/>\nn) \u0110i\u1ec1u khi\u1ec3n v\u00e0 h\u1ec7 th\u1ed1ng ch\u1ec9nh \u0111\u1ed9 s\u00e1ng \u0111\u00e8n.<br \/>\no) C\u00f4ng t\u1eafc \u1ed1ng th\u1ee7y ng\u00e2n.<br \/>\np) B\u1ed9 \u0111i\u1ec1u khi\u1ec3n cho m\u1ee5c \u0111\u00edch x\u00e1c \u0111\u1ecbnh.<br \/>\nq) B\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic b\u1eb1ng b\u00e1n d\u1eabn.<br \/>\nr) H\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh\/vi x\u1eed l\u00fd.<br \/>\ns) M\u00e1y bi\u1ebfn \u00e1p t\u1ef1 ng\u1eabu \u0111i\u1ec7n \u00e1p bi\u1ebfn thi\u00ean.<br \/>\nt) M\u00e1y bi\u1ebfn \u00e1p t\u1ef1 ng\u1eabu kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1.<br \/>\n1.5 Pa-nen \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c bao qu\u00e1t trong c\u00e1c y\u00eau c\u1ea7u trong Ti\u00eau chu\u1ea9n v\u1ec1 Pa-nen \u0110i\u1ec1u khi\u1ec3n C\u00f4ng nghi\u1ec7p, UL 508A.<\/p>\n<p align=\"center\">1.5 s\u1eeda \u0111\u1ed5i ng\u00e0y 2 th\u00e1ng 12, 2003<\/p>\n<p>1.6 B\u1ed9 \u0111i\u1ec1u khi\u1ec3n b\u01a1m c\u1ee9u h\u1ecfa \u0111\u01b0\u1ee3c bao qu\u00e1t trong c\u00e1c y\u00eau c\u1ea7u trong Ti\u00eau chu\u1ea9n v\u1ec1 B\u1ed9 \u0111i\u1ec1u khi\u1ec3n B\u01a1m C\u1ee9u h\u1ecfa, UL 218.<\/p>\n<p align=\"center\">1.6 s\u1eeda \u0111\u1ed5i ng\u00e0y 2 th\u00e1ng 12, 2003<\/p>\n<p>1.7 B\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec1u t\u1ed1c v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n ho\u1eb7c m\u00f4-\u0111un \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1edbi b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec1u t\u1ed1c \u0111\u01b0\u1ee3c bao qu\u00e1t trong Ti\u00eau chu\u1ea9n v\u1ec1 Thi\u1ebft b\u1ecb Chuy\u1ec3n \u0111\u1ed5i \u0110i\u1ec7n, UL 508C.<br \/>\n1.8 C\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c v\u1ecb tr\u00ed nguy hi\u1ec3m nh\u01b0 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong Quy ch\u1ebf \u0110i\u1ec7n Qu\u1ed1c gia, NFPA 70, \u0111\u01b0\u1ee3c bao qu\u00e1t trong Ti\u00eau chu\u1ea9n v\u1ec1 Thi\u1ebft b\u1ecb \u0110i\u1ec1u khi\u1ec3n C\u00f4ng nghi\u1ec7p \u0111\u1ec3 S\u1eed d\u1ee5ng trong c\u00e1c V\u1ecb tr\u00ed Nguy hi\u1ec3m (\u0111\u01b0\u1ee3c Ph\u00e2n lo\u1ea1i), UL 698.<br \/>\n1.9 C\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 v\u00e0\/ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n thi\u1ebft b\u1ecb l\u00e0m l\u1ea1nh \u0111\u01b0\u1ee3c bao qu\u00e1t trong Ti\u00eau chu\u1ea9n v\u1ec1 Thi\u1ebft b\u1ecb Ch\u1ec9 b\u00e1o v\u00e0 \u0110i\u1ec1u ch\u1ec9nh Nhi\u1ec7t \u0111\u1ed9, UL 873, v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh kh\u00e1c.<br \/>\n1.10 C\u00e1c d\u1ee5ng c\u1ee5 \u0111o \u0111i\u1ec7n \u0111\u01b0\u1ee3c bao qu\u00e1t trong Ti\u00eau chu\u1ea9n v\u1ec1 D\u1ee5ng c\u1ee5 \u0111o \u0110i\u1ec7n Analog- Lo\u1ea1i B\u1ea3ng \u0110i\u1ec7n, UL 1437.<br \/>\n<span style=\"color: #000000; font-family: Times; font-size: medium;\">1.11 M\u1ed9t s\u1ea3n ph\u1ea9m ch\u1ee9a c\u00e1c t\u00ednh n\u0103ng, \u0111\u1eb7c \u0111i\u1ec3m, th\u00e0nh ph\u1ea7n, v\u1eadt li\u1ec7u ho\u1eb7c h\u1ec7 th\u1ed1ng m\u1edbi hay kh\u00e1c v\u1edbi s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c bao qu\u00e1t trong c\u00e1c y\u00eau c\u1ea7u trong ti\u00eau chu\u1ea9n n\u00e0y v\u00e0 bao g\u1ed3m nguy c\u01a1 h\u1ecfa ho\u1ea1n ho\u1eb7c \u0111i\u1ec7n gi\u1eadt hay th\u01b0\u01a1ng t\u1ed5n \u0111\u1ed1i v\u1edbi m\u1ecdi ng\u01b0\u1eddi ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 s\u1eed d\u1ee5ng c\u00e1c y\u00eau c\u1ea7u th\u00e0nh ph\u1ea7n v\u00e0 s\u1ea3n ph\u1ea9m cu\u1ed1i b\u1ed5 sung th\u00edch h\u1ee3p \u0111\u1ec3 duy tr\u00ec m\u1ee9c \u0111\u1ed9 an to\u00e0n nh\u01b0 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh ban \u0111\u1ea7u trong ti\u00eau chu\u1ea9n n\u00e0y. S\u1ea3n ph\u1ea9m c\u00f3 t\u00ednh n\u0103ng, \u0111\u1eb7c \u0111i\u1ec3m, th\u00e0nh ph\u1ea7n, v\u1eadt li\u1ec7u ho\u1eb7c h\u1ec7 th\u1ed1ng xung \u0111\u1ed9t v\u1edbi c\u00e1c y\u00eau c\u1ea7u ho\u1eb7c \u0111i\u1ec1u kho\u1ea3n c\u1ee5 th\u1ec3 c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y kh\u00f4ng tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n n\u00e0y. S\u1eeda \u0111\u1ed5i y\u00eau c\u1ea7u <span style=\"font-family: Arial;\">s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t v\u00e0 th\u00f4ng qua ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n, s\u1eeda \u0111\u1ed5i v\u00e0 th\u1ef1c thi ti\u00eau chu\u1ea9n n\u00e0y.<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>UL 508 1 Ph\u1ea1m vi 1.1 C\u00e1c y\u00eau c\u1ea7u n\u00e0y bao qu\u00e1t c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ph\u1ee5 tr\u1ee3 kh\u00e1c \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng, d\u1eebng, \u0111i\u1ec1u ch\u1ec9nh, \u0111i\u1ec1u khi\u1ec3n ho\u1eb7c b\u1ea3o v\u1ec7 c\u00e1c \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n. C\u00e1c y\u00eau c\u1ea7u n\u00e0y c\u0169ng bao qu\u00e1t c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10247],"tags":[10279],"class_list":["post-6098","post","type-post","status-publish","format-standard","hentry","category-phu-luc","tag-ul-508"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/6098","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6098"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/6098\/revisions"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6098"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6098"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}