{"id":2605,"date":"2026-10-07T07:14:23","date_gmt":"2026-10-07T07:14:23","guid":{"rendered":"https:\/\/yocl.com\/?wpr2_import=6a1a58110530eab4fe441a1dcfede187c003fa0ee47df8ea676f5864197749c5"},"modified":"2026-10-07T07:14:23","modified_gmt":"2026-10-07T07:14:23","slug":"what-is-a-power-distribution-block","status":"publish","type":"post","link":"https:\/\/yocl.com\/vi\/what-is-a-power-distribution-block\/","title":{"rendered":"Kh\u1ed1i Ph\u00e2n Ph\u1ed1i Ngu\u1ed3n L\u00e0 G\u00ec? \u0110\u1ea7u V\u00e0o, \u0110\u1ea7u Ra v\u00e0 \u0110\u1ecbnh M\u1ee9c"},"content":{"rendered":"

Kh\u1ed1i ph\u00e2n ph\u1ed1i ngu\u1ed3n cung c\u1ea5p k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3, c\u00e1ch \u0111i\u1ec7n gi\u1eefa d\u00e2y d\u1eabn ngu\u1ed3n v\u00e0o v\u00e0 m\u1ed9t s\u1ed1 d\u00e2y d\u1eabn ra. Trong m\u1ed9t c\u1ef1c chung, c\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi nhau v\u1ec1 \u0111i\u1ec7n; c\u00e1c c\u1ef1c ri\u00eang bi\u1ec7t v\u1eabn c\u00e1ch \u0111i\u1ec7n v\u1edbi nhau. Kh\u1ed1i ch\u1ec9 d\u00f9ng \u0111\u1ec3 ph\u00e2n ph\u1ed1i th\u1ef1c hi\u1ec7n k\u1ebft n\u1ed1i. N\u00f3 kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p, chia d\u00f2ng \u0111i\u1ec7n \u0111\u1ec1u ho\u1eb7c thay th\u1ebf b\u1ea3o v\u1ec7 m\u1ea1ch.<\/strong><\/p>\n

\u0110\u1ecdc thi\u1ebft b\u1ecb qua ba c\u00e2u h\u1ecfi: Nh\u1eefng \u0111i\u1ec3m n\u00e0o \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i? D\u00e2y d\u1eabn n\u00e0o thu\u1ed9c v\u1ec1 m\u1ed7i v\u1ecb tr\u00ed? C\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u00e3 khai b\u00e1o bao g\u1ed3m nhi\u1ec7m v\u1ee5 g\u00ec?<\/strong> S\u1ed1 l\u01b0\u1ee3ng l\u1ed7 ho\u1eb7c gi\u00e1 tr\u1ecb ampe ti\u00eau \u0111\u1ec1 kh\u00f4ng th\u1ec3 tr\u1ea3 l\u1eddi c\u1ea3 ba.<\/p>\n

\u0110\u1ea7u v\u00e0o, \u0110\u1ea7u ra v\u00e0 C\u1ef1c M\u00f4 t\u1ea3 C\u00e1c Kh\u00e1c Bi\u1ec7t<\/h2>\n

M\u1ed9t \u0111\u1ea7u v\u00e0o<\/strong> l\u00e0 k\u1ebft n\u1ed1i cho d\u00e2y d\u1eabn v\u00e0o. M\u1ed9t \u0111\u1ea7u ra<\/strong>, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 k\u1ebft n\u1ed1i nh\u00e1nh, ph\u1ee5c v\u1ee5 cho d\u00e2y d\u1eabn \u0111i ra. M\u1ed9t c\u1ef1c<\/strong> x\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn chung v\u1ec1 \u0111i\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t kh\u1ecfi c\u00e1c c\u1ef1c kh\u00e1c. Do \u0111\u00f3, m\u1ed9t c\u1ef1c c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u \u0111\u1ea7u ra m\u00e0 kh\u00f4ng t\u1ea1o ra nhi\u1ec1u ngu\u1ed3n cung c\u1ea5p \u0111\u1ed9c l\u1eadp.<\/p>\n

Ph\u1ea1m vi c\u00f4ng khai c\u1ee7a UL 1953, Outline of Investigation for Power Distribution Blocks<\/a>, \u00a7\u00a71.2\u20131.3, m\u00f4 t\u1ea3 c\u00e1c \u0111\u1ea7u n\u1ed1i tr\u00ean \u0111\u1ebf c\u00e1ch \u0111i\u1ec7n, c\u00e1c quy \u0111\u1ecbnh v\u1ec1 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra, v\u00e0 s\u1ef1 t\u00e1ch bi\u1ec7t gi\u1eefa c\u00e1c c\u1ef1c v\u00e0 b\u1ec1 m\u1eb7t l\u1eafp \u0111\u1eb7t. \u0110\u00e2y l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o c\u1ea5u tr\u00fac h\u1eefu \u00edch trong ph\u1ea1m vi U.S c\u1ee7a n\u00f3. Ph\u1ea1m vi \u00e1p d\u1ee5ng c\u1ee7a B\u1ed9 lu\u1eadt \u0110i\u1ec7n Qu\u1ed1c gia (NEC); n\u00f3 kh\u00f4ng thi\u1ebft l\u1eadp ch\u1ee9ng nh\u1eadn c\u1ee7a m\u1ed9t m\u1eabu YOCL.<\/p>\n

H\u01b0\u1edbng c\u01a1 b\u1ea3n l\u00e0:<\/p>\n

D\u00e2y d\u1eabn v\u00e0o \u2192 k\u1ebft n\u1ed1i chung trong m\u1ed9t c\u1ef1c \u2192 d\u00e2y d\u1eabn \u0111i ra \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh.<\/strong><\/p>\n

C\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i thu\u1ed9c c\u00f9ng m\u1ed9t n\u00fat \u0111i\u1ec7n. C\u00e1c m\u1ea1ch ra kh\u00e1c nhau c\u00f3 th\u1ec3 c\u00f3 t\u1ea3i kh\u00e1c nhau v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 ri\u00eang. M\u1ed9t v\u1ecb tr\u00ed ra l\u00e0 m\u1ed9t \u0111i\u1ec3m k\u1ebft n\u1ed1i, kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t k\u00eanh \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ri\u00eang l\u1ebb. T\u01b0\u01a1ng t\u1ef1, k\u1ebft n\u1ed1i c\u00e1c \u0111i\u1ec7n th\u1ebf cung c\u1ea5p kh\u00e1c nhau v\u00e0o m\u1ed9t c\u1ef1c chung s\u1ebd n\u1ed1i c\u00e1c \u0111i\u1ec7n th\u1ebf \u0111\u00f3, thay v\u00ec gi\u1eef ch\u00fang c\u00e1ch ly.<\/p>\n

S\u1ed1 l\u01b0\u1ee3ng nh\u00e1nh kh\u00f4ng chia d\u00f2ng \u0111i\u1ec7n<\/h3>\n

Gi\u1ea3i th\u00edch quy t\u1eafc n\u00fat c\u1ee7a Kirchhoff c\u1ee7a OpenStax<\/a> n\u00eau r\u1eb1ng d\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0o m\u1ed9t n\u00fat b\u1eb1ng d\u00f2ng \u0111i\u1ec7n \u0111i ra kh\u1ecfi n\u00f3. S\u1ed1 l\u01b0\u1ee3ng v\u1ecb tr\u00ed ra kh\u00f4ng x\u00e1c \u0111\u1ecbnh d\u00f2ng \u0111i\u1ec7n c\u1ee7a m\u1ed7i nh\u00e1nh.<\/p>\n

\u0110\u1ed1i v\u1edbi n\u00fat d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u \u1ed5n \u0111\u1ecbnh minh h\u1ecda (DC)<\/strong>, gi\u1ea3 s\u1eed ba d\u00f2ng \u0111i\u1ec7n ra \u0111\u1ed3ng th\u1eddi l\u00e0 40 A, 30 A v\u00e0 15 A, kh\u00f4ng c\u00f3 nh\u00e1nh k\u1ebft n\u1ed1i n\u00e0o kh\u00e1c. D\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0o l\u00e0 40 + 30 + 15 = 85 A<\/strong>. N\u00f3 kh\u00f4ng t\u1ef1 \u0111\u1ed9ng chia th\u00e0nh ba ph\u1ea7n b\u1eb1ng nhau. \u0110\u00e2y l\u00e0 ph\u00e9p t\u00ednh m\u1ea1ch \u0111i\u1ec7n, kh\u00f4ng ph\u1ea3i l\u00e0 b\u00e0i ki\u1ec3m tra x\u1ebfp h\u1ea1ng UKK hay k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn\/b\u1ea3o v\u1ec7; n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ec9 d\u1eabn \u0111\u1ec3 c\u1ed9ng c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ecdc trung b\u00ecnh b\u00ecnh ph\u01b0\u01a1ng hi\u1ec7u d\u1ee5ng (AC RMS) c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u t\u00f9y \u00fd.<\/p>\n

\n\"K\u1ebft
Ba nh\u00e1nh minh h\u1ecda m\u1ed9t n\u00fat \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 b\u1ed1 c\u1ee5c v\u1eadt l\u00fd m\u01b0\u1eddi m\u1ed9t \u0111\u1ea7u ra c\u1ee7a UKK-250A hay s\u01a1 \u0111\u1ed3 b\u1ea3o v\u1ec7 ho\u00e0n ch\u1ec9nh.<\/figcaption><\/figure>\n

Ray l\u1eafp kh\u00f4ng thi\u1ebft l\u1eadp m\u1ea1ch<\/h3>\n

M\u1ed9t ray DIN \u0111\u1ee1 c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c l\u1eafp. C\u00e1c \u0111\u1ea7u cu\u1ed1i n\u1ed1i th\u00f4ng th\u01b0\u1eddng li\u1ec1n k\u1ec1 kh\u00f4ng \u0111\u01b0\u1ee3c n\u1ed1i \u0111i\u1ec7n ch\u1ec9 v\u00ec ch\u00fang d\u00f9ng chung ray \u0111\u00f3; k\u1ebft n\u1ed1i ho\u1eb7c c\u00e1ch b\u1ed1 tr\u00ed c\u1ea7u n\u1ed1i \u0111\u00e3 \u0111\u01b0\u1ee3c ghi l\u1ea1i c\u1ee7a ch\u00fang x\u00e1c \u0111\u1ecbnh vi\u1ec7c n\u1ed1i chung. Ph\u1ea7n k\u1ebft n\u1ed1i kh\u1ed1i \u0111\u1ea7u cu\u1ed1i v\u00e0 ph\u1ee5 ki\u1ec7n ray DIN<\/a> gi\u1ea3i th\u00edch nhi\u1ec7m v\u1ee5 ri\u00eang bi\u1ec7t \u0111\u00f3.<\/p>\n

T\u00ean s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 tr\u00f9ng l\u1eb7p, v\u00ec v\u1eady h\u00e3y ki\u1ec3m tra ch\u1ee9c n\u0103ng m\u1ea1ch v\u00e0 t\u00e0i li\u1ec7u \u00e1p d\u1ee5ng. UL 1953 c\u00f4ng khai \u00a71.4 lo\u1ea1i tr\u1eeb r\u00f5 r\u00e0ng c\u00e1c kh\u1ed1i \u0111\u1ea7u cu\u1ed1i \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong UL 1059. Vi\u1ec7c g\u1ecdi m\u1ed9t s\u1ea3n ph\u1ea9m l\u00e0 \u2019kh\u1ed1i ph\u00e2n ph\u1ed1i\u201c kh\u00f4ng t\u1ef1 n\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u00e1nh gi\u00e1 n\u00e0o \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng.<\/p>\n

\u0110\u1ecdc L\u1ecbch tr\u00ecnh k\u1ebft n\u1ed1i: V\u00ed d\u1ee5 v\u1ec1 UKK-250A<\/h2>\n

c\u1ee7a YOCL UKK<\/strong> l\u00e0 m\u1ed9t h\u1ecd kh\u1ed1i ph\u00e2n ph\u1ed1i m\u1ed9t c\u1ef1c, k\u1ebft n\u1ed1i b\u1eb1ng v\u00edt. Ph\u1ea7n b\u1ea3ng m\u1eabu v\u00e0 dung l\u01b0\u1ee3ng k\u1ebft n\u1ed1i UKK<\/a> cung c\u1ea5p m\u1ed9t v\u00ed d\u1ee5 r\u00f5 r\u00e0ng v\u1edbi UKK-250A<\/strong>:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
tr\u01b0\u1eddng UKK-250A<\/th>\nM\u1ee5c \u0111\u00e3 xu\u1ea5t b\u1ea3n<\/th>\n<\/tr>\n<\/thead>\n
D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<\/td>\n250 A<\/td>\n<\/tr>\n
\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c<\/td>\n690 V<\/td>\n<\/tr>\n
B\u1ed1 tr\u00ed k\u1ebft n\u1ed1i<\/td>\n\u0111\u1ea7u v\u00e0o 1 \/ \u0111\u1ea7u ra 11<\/td>\n<\/tr>\n
Th\u00f4ng s\u1ed1 \u0111\u1ea7u v\u00e0o<\/td>\n120 mm\u00b2 \u00d7 1<\/td>\n<\/tr>\n
Nh\u00f3m dung l\u01b0\u1ee3ng \u0111\u1ea7u ra 1<\/td>\nv\u1ecb tr\u00ed 2, m\u1ed7i 6\u201335 mm\u00b2<\/td>\n<\/tr>\n
Nh\u00f3m dung l\u01b0\u1ee3ng \u0111\u1ea7u ra 2<\/td>\nv\u1ecb tr\u00ed 4, m\u1ed7i v\u1ecb tr\u00ed 2.5\u201325 mm\u00b2<\/td>\n<\/tr>\n
Nh\u00f3m dung l\u01b0\u1ee3ng \u0111\u1ea7u ra 3<\/td>\nv\u1ecb tr\u00ed 5, m\u1ed7i v\u1ecb tr\u00ed 2.5\u201316 mm\u00b2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u00e2y l\u00e0 khai b\u00e1o c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t, kh\u00f4ng ph\u1ea3i ph\u00e9p \u0111o t\u1eeb m\u1ed9t c\u00e0i \u0111\u1eb7t. Ba nh\u00f3m k\u00edch th\u01b0\u1edbc kh\u00e1c nhau c\u00f3 t\u1ed5ng c\u1ed9ng m\u01b0\u1eddi m\u1ed9t v\u1ecb tr\u00ed \u0111\u1ea7u ra<\/strong>.<\/p>\n

A d\u00e2y d\u1eabn 25 mm\u00b2<\/strong> n\u1eb1m trong nh\u00f3m 1\u20132, tr\u00ean gi\u1edbi h\u1ea1n tr\u00ean c\u1ee7a nh\u00f3m 3. So s\u00e1nh \u0111\u00f3 thu h\u1eb9p c\u00e1c v\u1ecb tr\u00ed li\u00ean quan; n\u00f3 kh\u00f4ng x\u00e1c nh\u1eadn c\u1ea5u tr\u00fac d\u00e2y d\u1eabn, chu\u1ea9n b\u1ecb, s\u1ef1 ph\u00f9 h\u1ee3p c\u1ee7a \u0111\u1ea7u cu\u1ed1i ho\u1eb7c d\u00f2ng \u0111i\u1ec7n cho ph\u00e9p. V\u1eabn c\u1ea7n m\u1ed9t b\u1ea3n v\u1ebd m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ed1 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u1ebft n\u1ed1i v\u1eadt l\u00fd ch\u00ednh x\u00e1c.<\/p>\n

\n\"Tham
C\u00e1c nh\u00f3m \u0111\u01b0\u1ee3c \u0111\u1ebfm m\u00f4 t\u1ea3 dung l\u01b0\u1ee3ng danh m\u1ee5c. H\u00ecnh \u1ea3nh b\u00ean ngo\u00e0i c\u1ee7a d\u00f2ng s\u1ea3n ph\u1ea9m kh\u00f4ng x\u00e1c \u0111\u1ecbnh c\u1ed5ng n\u00e0o trong h\u00ecnh thu\u1ed9c v\u1ec1 m\u1ed9t nh\u00f3m ho\u1eb7c thi\u1ebft l\u1eadp kh\u1ea3 n\u0103ng ch\u1ea5p nh\u1eadn d\u00e2y d\u1eabn.<\/figcaption><\/figure>\n

\u0110\u1ea7u v\u00e0o l\u00e0 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ph\u1ea1m vi ch\u1ea5p nh\u1eadn t\u1eeb t\u1ed1i thi\u1ec3u \u0111\u1ebfn t\u1ed1i \u0111a<\/strong>. Kh\u00f4ng \u0111\u01b0\u1ee3c \u0111i\u1ec1n k\u00edch th\u01b0\u1edbc \u0111\u1ea7u v\u00e0o cho ph\u00e9p nh\u1ecf h\u01a1n b\u1eb1ng c\u00e1ch t\u01b0\u01a1ng t\u1ef1 v\u1edbi m\u1ed9t m\u1eabu kh\u00e1c. C\u00e1c l\u1ed7 ti\u1ebfp c\u1eadn v\u00edt c\u0169ng kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 v\u1ecb tr\u00ed d\u00e2y d\u1eabn b\u1ed5 sung. S\u1eed d\u1ee5ng l\u1ecbch tr\u00ecnh k\u1ebft n\u1ed1i v\u00e0 b\u1ea3n v\u1ebd ch\u00ednh x\u00e1c c\u00f9ng nhau.<\/p>\n

Nh\u1eefng g\u00ec X\u1ebfp h\u1ea1ng Thi\u1ebft l\u1eadp\u2014v\u00e0 nh\u1eefng g\u00ec V\u1eabn C\u1ea7n T\u00e0i li\u1ec7u<\/h2>\n

M\u1ed7i tr\u01b0\u1eddng tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi kh\u00e1c nhau. Gi\u00e1 tr\u1ecb ampe l\u1edbn kh\u00f4ng th\u1ec3 quy\u1ebft \u0111\u1ecbnh nhi\u1ec7m v\u1ee5 \u0111i\u1ec7n \u00e1p, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch d\u00e2y ho\u1eb7c hi\u1ec7u su\u1ea5t l\u1ed7i.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Tr\u01b0\u1eddng<\/th>\nC\u00e2u h\u1ecfi n\u00f3 gi\u00fap tr\u1ea3 l\u1eddi<\/th>\nB\u1eb1ng ch\u1ee9ng v\u1eabn c\u1ea7n thi\u1ebft cho \u1ee9ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<\/td>\nKh\u1ea3 n\u0103ng d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c khai b\u00e1o cho m\u1eabu n\u00e0y l\u00e0 g\u00ec?<\/td>\nC\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u1ecbnh m\u1ee9c \u00e1p d\u1ee5ng v\u00e0 ch\u1ebf \u0111\u1ed9 t\u1ea3i \u0111\u1ed3ng th\u1eddi \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/td>\n<\/tr>\n
\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c<\/td>\nCh\u1ebf \u0111\u1ed9 \u0111i\u1ec7n \u00e1p n\u00e0o \u0111\u01b0\u1ee3c khai b\u00e1o?<\/td>\nVi\u1ec7c s\u1eed d\u1ee5ng AC\/DC \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u00e1ch \u0111i\u1ec7n\/\u1ee9ng d\u1ee5ng li\u00ean quan<\/td>\n<\/tr>\n
Dung l\u01b0\u1ee3ng d\u00e2y d\u1eabn<\/td>\nM\u1ee5c nh\u1eadp ho\u1eb7c ph\u1ea1m vi k\u00edch th\u01b0\u1edbc n\u00e0o \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf v\u1ecb tr\u00ed n\u00e0y?<\/td>\nV\u1eadt li\u1ec7u, c\u1ea5u t\u1ea1o, s\u1ed1 l\u01b0\u1ee3ng d\u00e2y d\u1eabn v\u00e0 quy tr\u00ecnh chu\u1ea9n b\u1ecb cho ph\u00e9p<\/td>\n<\/tr>\n
H\u01b0\u1edbng d\u1eabn k\u1ebft n\u1ed1i<\/td>\nD\u00e2y d\u1eabn cho ph\u00e9p \u0111\u01b0\u1ee3c gi\u1eef nh\u01b0 th\u1ebf n\u00e0o?<\/td>\nH\u01b0\u1edbng d\u1eabn tu\u1ed1t d\u00e2y, si\u1ebft ch\u1eb7t v\u00e0 chu\u1ea9n b\u1ecb theo m\u1eabu<\/td>\n<\/tr>\n
L\u1eafp \u0111\u1eb7t v\u00e0 che \u0111\u1eady<\/td>\nB\u1ed9 ph\u1eadn n\u00e0y kh\u1edbp v\u1edbi thi\u1ebft b\u1ecb nh\u01b0 th\u1ebf n\u00e0o?<\/td>\nB\u1ea3n v\u1ebd, y\u00eau c\u1ea7u c\u1ed1 \u0111\u1ecbnh\/n\u1eafp \u0111\u1eady v\u00e0 kh\u00f4ng gian cho d\u00e2y d\u1eabn<\/td>\n<\/tr>\n
B\u1eb1ng ch\u1ee9ng ng\u1eafn m\u1ea1ch<\/td>\nC\u1ea5u h\u00ecnh \u0111\u01b0\u1ee3c ghi l\u1ea1i c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 m\u1ee9c ch\u1ecbu l\u1ed7i n\u00e0o?<\/td>\nX\u1ebfp h\u1ea1ng ng\u1eafn m\u1ea1ch ho\u1eb7c d\u1eef li\u1ec7u ch\u1ecbu \u0111\u1ef1ng, \u0111i\u1ec7n \u00e1p v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u00e1p d\u1ee5ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

D\u00f2ng \u0111i\u1ec7n danh \u0111\u1ecbnh kh\u00f4ng ph\u1ea3i l\u00e0 dung sai cho m\u1ed7i \u0111\u1ea7u ra<\/h3>\n

M\u1ee9c d\u00f2ng \u0111i\u1ec7n c\u1ee7a m\u1eabu kh\u00f4ng ph\u1ea3i l\u00e0 x\u1ebfp h\u1ea1ng ri\u00eang cho m\u1ed7i \u0111\u1ea7u ra. Nh\u00e2n d\u00f2ng \u0111i\u1ec7n ti\u00eau \u0111\u1ec1 v\u1edbi s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u ra kh\u00f4ng t\u1ea1o ra c\u00f4ng su\u1ea5t b\u1ed5 sung.<\/strong> Xem x\u00e9t \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c chia s\u1ebb, ho\u1ea1t \u0111\u1ed9ng nh\u00e1nh \u0111\u1ed3ng th\u1eddi v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n x\u1ebfp h\u1ea1ng \u00e1p d\u1ee5ng.<\/p>\n

T\u01b0\u01a1ng t\u1ef1, m\u1ee5c di\u1ec7n t\u00edch d\u00e2y d\u1eabn kh\u00f4ng th\u1ec3 t\u1ef1 m\u00ecnh x\u00e1c \u0111\u1ecbnh d\u00f2ng \u0111i\u1ec7n cho ph\u00e9p c\u1ee7a nh\u00e1nh. C\u00e2u h\u1ecfi \u0111\u00f3 c\u0169ng thu\u1ed9c v\u1ec1 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 d\u00e2y d\u1eabn, \u0111\u1ea7u cu\u1ed1i v\u00e0 thi\u1ebft b\u1ecb. V\u00ed d\u1ee5 UKK gi\u1ea3i th\u00edch c\u00e1ch \u0111\u1ecdc c\u00e1c tr\u01b0\u1eddng; n\u00f3 kh\u00f4ng ho\u00e0n th\u00e0nh ki\u1ec3m tra thi\u1ebft k\u1ebf \u0111\u00f3.<\/p>\n

Kh\u1edbp d\u00e2y bao g\u1ed3m v\u1eadt li\u1ec7u, c\u1ea5u t\u1ea1o v\u00e0 chu\u1ea9n b\u1ecb<\/h3>\n

M\u1ed9t d\u00e2y d\u1eabn c\u00f3 th\u1ec3 n\u1eb1m trong ph\u1ea1m vi di\u1ec7n t\u00edch danh ngh\u0129a trong khi \u0111\u1ea7u cu\u1ed1i \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c ghi l\u1ea1i. Ki\u1ec3m tra c\u1ea5u t\u1ea1o d\u00e2y \u0111\u1eb7c so v\u1edbi d\u00e2y b\u1ec7n, \u0111\u1ea7u \u0111\u00e3 chu\u1ea9n b\u1ecb \u0111\u01b0\u1ee3c cho ph\u00e9p v\u00e0 s\u1ed1 l\u01b0\u1ee3ng d\u00e2y d\u1eabn t\u1ea1i m\u1ed7i k\u1eb9p. V\u1eadt li\u1ec7u c\u1ee7a th\u00e2n d\u1eabn kh\u00f4ng ph\u1ea3i l\u00e0 b\u1eb1ng ch\u1ee9ng cho th\u1ea5y k\u1ebft n\u1ed1i ch\u1ea5p nh\u1eadn d\u00e2y d\u1eabn l\u00e0m t\u1eeb c\u00f9ng m\u1ed9t kim lo\u1ea1i.<\/p>\n

\u0110\u1ed1i v\u1edbi m\u1ed9t v\u00ed d\u1ee5 quy \u0111\u1ecbnh theo ph\u1ea1m vi, U.S. n\u01a1i l\u00e0m vi\u1ec7c OSHA 1910.303(c)(1)\u2013(2)<\/a> y\u00eau c\u1ea7u c\u00e1c k\u1ebft n\u1ed1i ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u1eadt li\u1ec7u d\u00e2y d\u1eabn v\u00e0 c\u00e1c \u0111\u1ea7u cu\u1ed1i cho nhi\u1ec1u d\u00e2y d\u1eabn ho\u1eb7c nh\u00f4m ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh t\u01b0\u01a1ng \u1ee9ng. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ph\u00ea duy\u1ec7t m\u1ed9t UKK k\u1ebft h\u1ee3p d\u00e2y d\u1eabn c\u1ee5 th\u1ec3.<\/p>\n

Khi s\u1eed d\u1ee5ng \u0111\u1ea7u cos, c\u00e1c y\u00eau c\u1ea7u k\u1ebft n\u1ed1i \u0111\u1ea7u cos \u0111\u01a1n v\u00e0 k\u00e9p<\/a> gi\u00fap ph\u00e2n bi\u1ec7t c\u00e1c c\u00e1ch b\u1ed1 tr\u00ed \u0111\u1ea7u n\u1ed1i \u0111\u00e3 chu\u1ea9n b\u1ecb. \u0110\u1ea7u cos k\u00e9p kh\u00f4ng t\u1ef1 \u0111\u1ed9ng cho ph\u00e9p \u0111\u1eb7t hai d\u00e2y v\u00e0o m\u1ed9t v\u1ecb tr\u00ed kh\u1ed1i ph\u00e2n ph\u1ed1i.<\/p>\n

Nhi\u1ec7m v\u1ee5 ng\u1eafn m\u1ea1ch thu\u1ed9c v\u1ec1 m\u1ed9t \u0111\u00e1nh gi\u00e1 ri\u00eang bi\u1ec7t<\/h3>\n

M\u1ed9t kh\u1ed1i ch\u1ec9 d\u00f9ng \u0111\u1ec3 ph\u00e2n ph\u1ed1i kh\u00f4ng t\u1ea1o ra s\u1ef1 c\u1ed1. Tuy\u00ean b\u1ed1 d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a n\u00f3 kh\u00f4ng th\u1ec3 thi\u1ebft l\u1eadp kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng ng\u1eafn m\u1ea1ch (SCCR)<\/strong> ho\u1eb7c thay th\u1ebf \u0111\u00e1nh gi\u00e1 b\u1ea3o v\u1ec7. Trong ph\u1ea1m vi U.S n\u01a1i l\u00e0m vi\u1ec7c c\u1ee7a m\u00ecnh, OSHA 1910.303(b)(4)\u2013(5) ph\u00e2n bi\u1ec7t nhi\u1ec7m v\u1ee5 ng\u1eaft thi\u1ebft b\u1ecb v\u00e0 ph\u1ed1i h\u1ee3p li\u00ean quan \u0111\u1ebfn \u0111\u1ecbnh m\u1ee9c ng\u1eafn m\u1ea1ch c\u1ee7a b\u1ed9 ph\u1eadn v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7.<\/p>\n

\u0110\u1ed1i v\u1edbi b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n th\u1ef1c t\u1ebf, h\u00e3y l\u1ea5y b\u1eb1ng ch\u1ee9ng d\u00f2ng s\u1ef1 c\u1ed1 \u00e1p d\u1ee5ng v\u00e0 b\u1ea5t k\u1ef3 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 n\u00e0o \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. B\u1ea3ng UKK c\u00f4ng c\u1ed9ng \u0111\u01b0\u1ee3c xem x\u00e9t \u1edf \u0111\u00e2y kh\u00f4ng cung c\u1ea5p gi\u00e1 tr\u1ecb SCCR. \u0110\u00f3 l\u00e0 m\u1ed9t tr\u01b0\u1eddng t\u00e0i li\u1ec7u b\u1ecb thi\u1ebfu, kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 cho ph\u00e9p g\u00e1n gi\u00e1 tr\u1ecb m\u1eb7c \u0111\u1ecbnh ho\u1eb7c k\u1ebft lu\u1eadn r\u1eb1ng s\u1ea3n ph\u1ea9m \u0111\u00e3 kh\u00f4ng v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra. D\u1eef li\u1ec7u b\u1ed9 ph\u1eadn c\u0169ng kh\u00f4ng x\u00e1c minh c\u00e1ch b\u1ed1 tr\u00ed thi\u1ebft b\u1ecb \u0111\u00e3 ho\u00e0n th\u00e0nh.<\/p>\n

Ch\u1ecdn T\u00e0i li\u1ec7u Ti\u1ebfp theo theo C\u00e2u h\u1ecfi C\u00f2n m\u1edf<\/h2>\n

S\u1eed d\u1ee5ng c\u00e2u h\u1ecfi c\u00f2n l\u1ea1i \u0111\u1ec3 ch\u1ecdn t\u00e0i nguy\u00ean ti\u1ebfp theo, thay v\u00ec bi\u1ebfn t\u1ed5ng quan n\u00e0y th\u00e0nh m\u1ed9t quy tr\u00ecnh \u0111\u1ea5u d\u00e2y ho\u1eb7c \u0111\u1ecbnh c\u1ee1.<\/p>\n\n\n\n\n\n\n\n\n\n
C\u00e2u h\u1ecfi c\u00f2n l\u1ea1i<\/th>\nT\u00e0i nguy\u00ean ti\u1ebfp theo<\/th>\nTh\u00f4ng tin c\u1ea7n chuy\u1ec3n ti\u1ebfp<\/th>\n<\/tr>\n<\/thead>\n
K\u1ebft n\u1ed1i n\u00e0o l\u00e0 chung, ri\u00eang bi\u1ec7t hay b\u1eafc c\u1ea7u?<\/td>\nS\u01a1 \u0111\u1ed3 m\u1ea1ch\/thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i ch\u00ednh x\u00e1c; h\u01b0\u1edbng d\u1eabn kh\u1ed1i thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i \u1edf tr\u00ean \u0111\u1ec3 bi\u1ebft thu\u1eadt ng\u1eef<\/td>\nB\u1ed1 tr\u00ed c\u1ef1c v\u00e0 ch\u1ee9c n\u0103ng m\u1ea1ch d\u1ef1 ki\u1ebfn<\/td>\n<\/tr>\n
D\u00e2y d\u1eabn n\u00e0o thu\u1ed9c v\u1ec1 \u0111\u00e2u?<\/td>\nL\u1ecbch tr\u00ecnh k\u1ebft n\u1ed1i UKK ch\u00ednh x\u00e1c v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ed1<\/td>\nK\u00edch th\u01b0\u1edbc, v\u1eadt li\u1ec7u, c\u1ea5u t\u1ea1o v\u00e0 \u0111\u1ea7u \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb cho m\u1ed7i v\u1ecb tr\u00ed<\/td>\n<\/tr>\n
C\u00f3 \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng \u0111\u1ea7u chu\u1ea9n b\u1ecb \u0111\u01a1n hay \u0111\u00f4i kh\u00f4ng?<\/td>\nH\u01b0\u1edbng d\u1eabn thi\u1ebft b\u1ecb nh\u1eadn v\u00e0 so s\u00e1nh \u0111\u1ea7u cos \u1edf tr\u00ean<\/td>\nS\u1ed1 l\u01b0\u1ee3ng d\u00e2y ban \u0111\u1ea7u v\u00e0 c\u00e1ch b\u1ed1 tr\u00ed \u0111\u1ea7u cu\u1ed1i c\u00f9ng<\/td>\n<\/tr>\n
M\u1eabu c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u \u0111i\u1ec7n n\u0103ng kh\u00f4ng?<\/td>\nT\u00e0i li\u1ec7u \u0111\u1ecbnh m\u1ee9c m\u1eabu v\u00e0 y\u00eau c\u1ea7u thi\u1ebft b\u1ecb \u00e1p d\u1ee5ng<\/td>\nD\u00f2ng \u0111i\u1ec7n, \u0111i\u1ec7n \u00e1p, AC\/DC ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u1eafp \u0111\u1eb7t<\/td>\n<\/tr>\n
T\u1ee7 \u0111i\u1ec7n c\u00f3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u v\u1ec1 s\u1ef1 c\u1ed1 kh\u00f4ng?<\/td>\n\u0110\u00e1nh gi\u00e1 thi\u1ebft b\u1ecb v\u00e0 t\u00e0i li\u1ec7u v\u1ec1 b\u1ed9 ph\u1eadn\/b\u1ea3o v\u1ec7<\/td>\nD\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 c\u00f3 s\u1eb5n v\u00e0 s\u1ef1 ph\u1ed1i h\u1ee3p \u0111\u01b0\u1ee3c ghi nh\u1eadn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u1ed1i v\u1edbi \u0111\u00e1nh gi\u00e1 theo d\u00f2ng h\u1ecd, D\u00f2ng s\u1ea3n ph\u1ea9m kh\u1ed1i ph\u00e2n ph\u1ed1i \u0111i\u1ec7n YOCL<\/a> cung c\u1ea5p l\u1ed9 tr\u00ecnh s\u1ea3n ph\u1ea9m. G\u1eedi m\u00e3 model ch\u00ednh x\u00e1c, l\u1ecbch tr\u00ecnh v\u1ecb tr\u00ed d\u00e2y d\u1eabn, s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng m\u1ea1ch \u0111\u00e3 bi\u1ebft khi y\u00eau c\u1ea7u t\u00e0i li\u1ec7u h\u1ed7 tr\u1ee3. \u0110i\u1ec1u n\u00e0y gi\u00fap y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi k\u1ebft n\u1ed1i v\u00e0 b\u1eb1ng ch\u1ee9ng b\u1ea1n th\u1ef1c s\u1ef1 c\u1ea7n.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n