{"id":1629,"date":"2026-08-25T15:11:09","date_gmt":"2026-08-25T15:11:09","guid":{"rendered":"https:\/\/benlongkj.com\/?p=1629"},"modified":"2026-08-25T15:11:12","modified_gmt":"2026-08-25T15:11:12","slug":"what-is-hi-pot-testing","status":"publish","type":"post","link":"https:\/\/benlongkj.com\/vi\/blog\/what-is-hi-pot-testing\/","title":{"rendered":"Hi-Pot Testing l\u00e0 g\u00ec?"},"content":{"rendered":"<p>V\u1ec1 h\u1ec7 th\u1ed1ng cung c\u1ea5p \u0111i\u1ec7n, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, m\u00e1y bi\u1ebfn \u00e1p v\u00e0 tr\u1ea1m s\u1ea1c xe \u0111i\u1ec7n, ch\u00fang tr\u1ea3i qua m\u1ed9t quy tr\u00ecnh ki\u1ec3m tra g\u1ecdi l\u00e0 \u201cki\u1ec3m tra hi-pot\u201d tr\u01b0\u1edbc khi r\u1eddi kh\u1ecfi c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t. Kh\u00f4ng nhi\u1ec1u ng\u01b0\u1eddi mua c\u00f3 th\u1ec3 bi\u1ebft ki\u1ec3m tra hi-pot bao g\u1ed3m nh\u1eefng g\u00ec, v\u00ec v\u1eady ch\u00fang t\u00f4i s\u1ebd l\u00e0m r\u00f5 \u00fd ngh\u0129a th\u1ef1c s\u1ef1 c\u1ee7a n\u00f3. Hi-pot l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a ki\u1ec3m tra \u0111i\u1ec7n \u00e1p cao, v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 m\u1ed9t t\u00ean g\u1ecdi kh\u00e1c c\u1ee7a ki\u1ec3m tra ch\u1ecbu \u0111i\u1ec7n m\u00f4i. N\u00f3i c\u00e1ch kh\u00e1c, n\u00f3 ng\u1ee5 \u00fd vi\u1ec7c \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi \u0111i\u1ec7n \u00e1p s\u1eed d\u1ee5ng c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 ki\u1ec3m tra xem l\u1edbp c\u00e1ch \u0111i\u1ec7n c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p \u0111\u00f3 hay kh\u00f4ng.<\/p>\n<blockquote><p>Trong quy tr\u00ecnh ki\u1ec3m tra \u0111i\u1ec7n \u00e1p cao ho\u1eb7c ki\u1ec3m tra ch\u1ecbu \u0111i\u1ec7n m\u00f4i, l\u1edbp c\u00e1ch \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p cao \u0111\u01b0\u1ee3c ki\u1ec3m tra trong 60 gi\u00e2y. Ki\u1ec3m tra \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p r\u1ea5t cao trong kho\u1ea3ng t\u1eeb 1.000 \u2013 3.000 volt A.C. ho\u1eb7c t\u1eeb 1.500 \u2013 4.200 volt D.C. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c g\u1eedi d\u00f2ng \u0111i\u1ec7n gi\u1eefa ph\u1ea7n c\u00f3 \u0111i\u1ec7n c\u1ee7a s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00e0 b\u1ec1 m\u1eb7t n\u1ed1i \u0111\u1ea5t ho\u1eb7c c\u00e1c b\u1ec1 m\u1eb7t b\u00ean trong s\u1ea3n ph\u1ea9m. D\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua l\u1edbp c\u00e1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t. Ki\u1ec3m tra \u0111\u01b0\u1ee3c cho l\u00e0 x\u00e1c nh\u1eadn li\u1ec7u l\u1edbp c\u00e1ch \u0111i\u1ec7n \u0111ang \u0111\u01b0\u1ee3c ki\u1ec3m tra c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1ec9nh \u0111i\u1ec7n \u00e1p cao qu\u00e1 m\u1ee9c m\u00e0 kh\u00f4ng g\u00e2y h\u1ecfng l\u1edbp c\u00e1ch \u0111i\u1ec7n hay kh\u00f4ng.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1630\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/08\/What-Is-a-Hi-Pot-Test.webp\" alt=\"Ki\u1ec3m Tra Hi-Pot L\u00e0 G\u00ec\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Ki\u1ec3m Tra Hi-Pot L\u00e0 G\u00ec?<\/h2>\n<p>Ki\u1ec3m tra hi-pot \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ki\u1ec3m tra an to\u00e0n \u0111i\u1ec7n \u00e1p cao, \u0111\u00e1nh gi\u00e1 \u0111i\u1ec7n \u00e1p th\u1ef1c t\u1ebf v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1ch \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb. Giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a ki\u1ec3m tra bao g\u1ed3m vi\u1ec7c x\u00e1c \u0111\u1ecbnh xem l\u1edbp c\u00e1ch \u0111i\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng ng\u0103n d\u00f2ng \u0111i\u1ec7n t\u1eeb c\u00e1c m\u1ea1ch \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p truy\u1ec1n sang b\u1ea5t k\u1ef3 b\u1ec1 m\u1eb7t n\u00e0o, nh\u01b0 khung m\u00e1y ho\u1eb7c c\u00e1c d\u00e2y d\u1eabn kh\u00e1c hay kh\u00f4ng. Thu\u1eadt ng\u1eef n\u00e0y b\u1eaft ngu\u1ed3n t\u1eeb \u201c\u0111i\u1ec7n \u00e1p cao\u201d \u2014 ph\u1ea3n \u00e1nh \u0111i\u1ec7n \u00e1p cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra.<\/p>\n<p>T\u1ea1i sao c\u1ea7n th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u1edf \u0111i\u1ec7n \u00e1p cao h\u01a1n \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111i\u1ec7n? L\u00fd do l\u00e0 \u0111i\u1ec7n t\u1ea1o ra nhi\u1ec1u lo\u1ea1i nhi\u1ec5u \u2014 v\u00ed d\u1ee5 nh\u01b0 s\u00e9t \u0111\u00e1nh, chuy\u1ec3n m\u1ea1ch v\u00e0 l\u1ed7i l\u01b0\u1edbi \u0111i\u1ec7n, d\u1eabn \u0111\u1ebfn c\u00e1c \u0111\u1ec9nh \u0111i\u1ec7n \u00e1p ng\u1eafn v\u01b0\u1ee3t qu\u00e1 nhi\u1ec1u l\u1ea7n so v\u1edbi \u0111i\u1ec7n \u00e1p ti\u00eau chu\u1ea9n c\u1ee5 th\u1ec3. Do \u0111\u00f3, l\u1edbp c\u00e1ch \u0111i\u1ec7n v\u01b0\u1ee3t qua ki\u1ec3m tra hi-pot t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3 c\u00f3 th\u1ec3 c\u00f3 nh\u1eefng khuy\u1ebft \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh trong s\u1ea3n xu\u1ea5t nh\u01b0 l\u1ed7i s\u1ea3n xu\u1ea5t ho\u1eb7c h\u01b0 h\u1ea1i ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t l\u1edbp c\u00e1ch \u0111i\u1ec7n. V\u00ec v\u1eady, vi\u1ec7c th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111i\u1ec7n hi-pot c\u00f3 ngh\u0129a l\u00e0 t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t m\u1ee9c nh\u1ea5t \u0111\u1ecbnh v\u00e0 x\u00e1c minh r\u1eb1ng l\u1edbp c\u00e1ch \u0111i\u1ec7n ch\u1ecbu \u0111\u01b0\u1ee3c, \u0111i\u1ec1u n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c lo\u1ea1i b\u1ecf c\u00e1c khuy\u1ebft \u0111i\u1ec3m \u1edf giai \u0111o\u1ea1n tr\u01b0\u1edbc khi s\u1ea3n ph\u1ea9m xu\u1ea5t hi\u1ec7n tr\u00ean th\u1ecb tr\u01b0\u1eddng.<\/p>\n<p>Ki\u1ec3m tra hi-pot l\u00e0 m\u1ed9t lo\u1ea1i ki\u1ec3m tra \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t, kh\u00f4ng t\u00ednh \u0111i\u1ec3m v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c giai \u0111o\u1ea1n th\u1eed nghi\u1ec7m v\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/p>\n<h2>C\u00e1ch Th\u1ee9c Ho\u1ea1t \u0110\u1ed9ng: Nguy\u00ean L\u00fd<\/h2>\n<p>\u00dd t\u01b0\u1edfng c\u01a1 b\u1ea3n l\u00e0 \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p cao gi\u1eefa hai \u0111i\u1ec3m c\u1ea7n \u0111\u01b0\u1ee3c c\u00e1ch ly, sau \u0111\u00f3 \u0111o d\u00f2ng r\u00f2 r\u1ec9 ch\u1ea3y qua l\u1edbp c\u00e1ch \u0111i\u1ec7n. Hai \u0111i\u1ec3m n\u00e0y c\u00f3 th\u1ec3 l\u00e0 b\u1ea5t k\u1ef3 trong s\u1ed1 c\u00e1c \u0111i\u1ec3m sau:<\/p>\n<ul>\n<li>Ngu\u1ed3n \u0111i\u1ec7n v\u00e0o v\u00e0 n\u1ed1i \u0111\u1ea5t<\/li>\n<li>M\u1ea1ch s\u01a1 c\u1ea5p v\u00e0 m\u1ea1ch th\u1ee9 c\u1ea5p<\/li>\n<li>M\u1ea1ch v\u00e0 khung ho\u1eb7c ph\u1ea7n kim lo\u1ea1i l\u1ed9 ra<\/li>\n<li>M\u1eb7t \u0111\u1ea5t v\u00e0 m\u1eb7t ngu\u1ed3n tr\u00ean b\u1ea3ng m\u1ea1ch in<\/li>\n<\/ul>\n<p>To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh ki\u1ec3m tra bao g\u1ed3m b\u1ed1n giai \u0111o\u1ea1n:<\/p>\n<ul>\n<li><span style=\"color: #ff0000;\">T\u0103ng d\u1ea7n:<\/span> b\u1eaft \u0111\u1ea7u t\u1eeb \u0111i\u1ec7n \u00e1p b\u1eb1ng kh\u00f4ng, \u0111i\u1ec7n \u00e1p t\u0103ng d\u1ea7n \u0111\u1ebfn \u0111i\u1ec7n \u00e1p m\u1ee5c ti\u00eau theo m\u1ed9t qu\u00e1 tr\u00ecnh ki\u1ec3m so\u00e1t (th\u00f4ng th\u01b0\u1eddng, qu\u00e1 tr\u00ecnh n\u00e0y k\u00e9o d\u00e0i \u0111\u1ebfn ph\u1ea7n \u0111\u1ea7u ti\u00ean c\u1ee7a b\u00e0i ki\u1ec3m tra nh\u01b0ng c\u0169ng c\u00f3 th\u1ec3 di\u1ec5n ra ngay l\u1eadp t\u1ee9c (khi ki\u1ec3m tra thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t).<\/li>\n<li><span style=\"color: #ff0000;\">Gi\u1eef:<\/span> \u0111i\u1ec7n \u00e1p gi\u1eef nguy\u00ean trong th\u1eddi gian mong mu\u1ed1n \u2013 ngh\u0129a l\u00e0 60 gi\u00e2y cho b\u00e0i ki\u1ec3m tra thi\u1ebft b\u1ecb gia d\u1ee5ng; trong khi ki\u1ec3m tra thi\u1ebft b\u1ecb s\u1ebd t\u1eeb 1 \u0111\u1ebfn 2 gi\u00e2y \u1edf \u0111i\u1ec7n \u00e1p cao h\u01a1n c\u1ee7a 20%.<\/li>\n<li><span style=\"color: #ff0000;\">Gi\u00e1m s\u00e1t:<\/span> trong qu\u00e1 tr\u00ecnh gi\u1eef, thi\u1ebft b\u1ecb li\u00ean t\u1ee5c gi\u00e1m s\u00e1t d\u00f2ng r\u00f2 r\u1ec9 trong l\u1edbp c\u00e1ch \u0111i\u1ec7n. C\u00e1ch \u0111i\u1ec7n ho\u00e0n h\u1ea3o c\u00f3 ngh\u0129a l\u00e0 \u0111i\u1ec7n \u00e1p kh\u00f4ng cho d\u00f2ng r\u00f2 r\u1ec9 \u0111i qua; trong khi c\u00e1ch \u0111i\u1ec7n b\u1ecb h\u1ecfng s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u d\u00f2ng \u0111i\u1ec7n ho\u1eb7c ho\u00e0n to\u00e0n b\u1ecb h\u1ecfng.<\/li>\n<li><span style=\"color: #ff0000;\">Ra quy\u1ebft \u0111\u1ecbnh:<\/span> n\u1ebfu d\u00f2ng r\u00f2 r\u1ec9 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n v\u00e0 kh\u00f4ng x\u1ea3y ra s\u1ef1 c\u1ed1 ph\u00e1 v\u1ee1, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c coi l\u00e0 \u0111\u00fang; ng\u01b0\u1ee3c l\u1ea1i s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c coi l\u00e0 l\u1ed7i.<\/li>\n<\/ul>\n<p>V\u1ec1 m\u1eb7t t\u00e1i t\u1ea1o v\u1eadt l\u00fd, b\u00e0i ki\u1ec3m tra \u0111\u1eb7t l\u1edbp c\u00e1ch \u0111i\u1ec7n d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n. K\u1ebft qu\u1ea3 l\u00e0, n\u1ebfu c\u00f3 l\u1ed7 nh\u1ecf, ph\u1ea7n m\u1ecfng, nhi\u1ec5m b\u1ea9n ho\u1eb7c kho\u1ea3ng c\u00e1ch r\u00f2 r\u1ec9 kh\u00f4ng \u0111\u00fang trong l\u1edbp c\u00e1ch \u0111i\u1ec7n, l\u1ef1c \u0111i\u1ec7n s\u1ebd ph\u00e1t hi\u1ec7n v\u00f9ng y\u1ebfu v\u00e0 b\u1eaft \u0111\u1ea7u ch\u1ea3y qua \u0111\u00f3.<\/p>\n<h2>Ti\u00eau chu\u1ea9n v\u00e0 Khi n\u00e0o \u00e1p d\u1ee5ng<\/h2>\n<table>\n<thead>\n<tr>\n<th>Ti\u00eau chu\u1ea9n<\/th>\n<th>Bao g\u1ed3m<\/th>\n<th>\u0110i\u1ec7n \u00e1p ki\u1ec3m tra \u0111i\u1ec3n h\u00ecnh (s\u1ea3n ph\u1ea9m 230V, c\u00e1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>IEC 60950-1<\/strong> (r\u00fat lui th\u00e1ng 12 n\u0103m 2020, thay th\u1ebf b\u1edfi IEC 62368-1)<\/td>\n<td>Thi\u1ebft b\u1ecb CNTT v\u00e0 vi\u1ec5n th\u00f4ng (c\u0169)<\/td>\n<td>~1.500V AC (2\u00d7U + 1.000V)<\/td>\n<\/tr>\n<tr>\n<td><strong>IEC 62368-1<\/strong><\/td>\n<td>Thi\u1ebft b\u1ecb \u00e2m thanh\/h\u00ecnh \u1ea3nh, CNTT, truy\u1ec1n th\u00f4ng \u2014 ti\u00eau chu\u1ea9n hi\u1ec7n t\u1ea1i<\/td>\n<td>500V AC c\u01a1 b\u1ea3n \/ 2.500V AC t\u0103ng c\u01b0\u1eddng<\/td>\n<\/tr>\n<tr>\n<td><strong>IEC 60601-1<\/strong><\/td>\n<td>Thi\u1ebft b\u1ecb \u0111i\u1ec7n y t\u1ebf<\/td>\n<td>~1.800V AC c\u01a1 b\u1ea3n (2\u00d7U \u00d71.414 + 1.500V ki\u1ec3u)<\/td>\n<\/tr>\n<tr>\n<td><strong>IEC 61010-1<\/strong><\/td>\n<td>Thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng, \u0111i\u1ec1u khi\u1ec3n v\u00e0 ph\u00f2ng th\u00ed nghi\u1ec7m<\/td>\n<td>2U + 1.000V<\/td>\n<\/tr>\n<tr>\n<td><strong>UL 61010 \/ UL 62368<\/strong><\/td>\n<td>\u00c1p d\u1ee5ng B\u1eafc M\u1ef9 c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n tr\u00ean<\/td>\n<td>Gi\u00e1 tr\u1ecb c\u1ed1 \u0111\u1ecbnh 1.250V AC ho\u1eb7c 1.500V DC ph\u1ed5 bi\u1ebfn<\/td>\n<\/tr>\n<tr>\n<td><strong>ISO 16750-2<\/strong><\/td>\n<td>Thi\u1ebft b\u1ecb \u0111i\u1ec7n \u00f4 t\u00f4<\/td>\n<td>500-1.000V DC, r\u00f2 r\u1ec9 \u22641mA<\/td>\n<\/tr>\n<tr>\n<td><strong>IEC 60204-1<\/strong><\/td>\n<td>Thi\u1ebft b\u1ecb \u0111i\u1ec7n m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p<\/td>\n<td>2U + 1.000V (t\u1ed1i thi\u1ec3u 1.000V)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u1ed1i v\u1edbi ph\u1ea7n l\u1edbn \u0111\u1ed9c gi\u1ea3, c\u00e1c ti\u00eau chu\u1ea9n quan tr\u1ecdng bao g\u1ed3m IEC 62368-1 (\u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng, CNTT), IEC 60601-1 (y t\u1ebf), IEC 61010-1 (\u0111o l\u01b0\u1eddng\/ph\u00f2ng th\u00ed nghi\u1ec7m\/c\u00f4ng nghi\u1ec7p), v\u00e0 IEC 60204-1 (m\u00e1y m\u00f3c \u2014 ti\u00eau chu\u1ea9n n\u00e0y ch\u1ec9 li\u00ean quan \u0111\u1ebfn quy tr\u00ecnh s\u1ea3n xu\u1ea5t nh\u01b0 c\u00e1c tr\u1ea1m ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng cho MCB). N\u1ebfu b\u1ea1n x\u00e2y d\u1ef1ng m\u00e1y m\u00f3c \u0111i\u1ec7n ho\u1eb7c thi\u1ebft b\u1ecb ki\u1ec3m tra, hi\u1ec3u c\u00e1c b\u00e0i ki\u1ec3m tra n\u00e0y l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn \u2014 c\u00f9ng m\u1ed9t nguy\u00ean t\u1eafc \u0111i\u1ec1u khi\u1ec3n ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng trong <a href=\"https:\/\/benlongkj.com\/vi\/blog\/automated-vs-manual-mcb-testing-payback\/\">ph\u00e2n t\u00edch ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng so v\u1edbi th\u1ee7 c\u00f4ng<\/a>.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1631\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/08\/How-Test-Voltage-Is-Calculated.webp\" alt=\"C\u00e1ch t\u00ednh \u0111i\u1ec7n \u00e1p ki\u1ec3m tra\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>C\u00e1ch t\u00ednh \u0111i\u1ec7n \u00e1p ki\u1ec3m tra<\/h2>\n<p>\u0110i\u1ec7n \u00e1p \u00e1p d\u1ee5ng trong b\u00e0i ki\u1ec3m tra kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean, v\u00ec n\u00f3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c ti\u00eau chu\u1ea9n li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c (\u0111i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng trung b\u00ecnh l\u1edbn nh\u1ea5t (RMS) c\u00f3 trong l\u1edbp c\u00e1ch \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh ti\u00eau chu\u1ea9n) v\u00e0 c\u1ea5p c\u00e1ch \u0111i\u1ec7n:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ti\u00eau chu\u1ea9n \/ L\u1edbp c\u00e1ch \u0111i\u1ec7n<\/th>\n<th>C\u00f4ng th\u1ee9c<\/th>\n<th>V\u00ed d\u1ee5 (230V l\u00e0m vi\u1ec7c)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Quy t\u1eafc chung (c\u01a1 b\u1ea3n)<\/td>\n<td>2 \u00d7 \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c + 1.000V<\/td>\n<td>2\u00d7230 + 1.000 = 1.460V \u2192 1.500V AC<\/td>\n<\/tr>\n<tr>\n<td>IEC 60950 c\u01a1 b\u1ea3n (d\u1ef1a tr\u00ean \u0111\u1ec9nh AC)<\/td>\n<td>414 \u00d7 \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c + 1.000V<\/td>\n<td>414\u00d7230 + 1,000 \u2248 1,325V \u2192 1,500V AC<\/td>\n<\/tr>\n<tr>\n<td>IEC 60950 t\u0103ng c\u01b0\u1eddng<\/td>\n<td>C\u01a1 b\u1ea3n \u00d7 1.6<\/td>\n<td>500 \u00d7 1,6 = 2.400V \u2192 2.500V AC<\/td>\n<\/tr>\n<tr>\n<td>IEC 60601 c\u01a1 b\u1ea3n (y t\u1ebf)<\/td>\n<td>414 \u00d7 \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c + 1,500V<\/td>\n<td>414\u00d7230 + 1,500 \u2248 1,825V AC<\/td>\n<\/tr>\n<tr>\n<td>IEC 60601 t\u0103ng c\u01b0\u1eddng (y t\u1ebf)<\/td>\n<td>414 \u00d7 \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c + 3,000V<\/td>\n<td>\u2248 3.325V AC<\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 tr\u1ecb c\u1ed1 \u0111\u1ecbnh UL\/CSA<\/td>\n<td>C\u1ed1 \u0111\u1ecbnh theo lo\u1ea1i s\u1ea3n ph\u1ea9m<\/td>\n<td>1,250V AC ho\u1eb7c 1,500V DC ph\u1ed5 bi\u1ebfn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110i\u1ec7n \u00e1p AC so v\u1edbi \u0111i\u1ec7n \u00e1p th\u1eed DC: khi \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p DC \u0111\u1ec3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi gi\u00e1 tr\u1ecb \u0111\u1ec9nh c\u1ee7a \u0111i\u1ec7n \u00e1p AC, c\u1ea7n s\u1eed d\u1ee5ng h\u1ec7 s\u1ed1 \u221a2 \u2014 v\u00ed d\u1ee5 1,500V AC t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 2,121V DC. DC \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n trong quy tr\u00ecnh s\u1ea3n xu\u1ea5t do \u0111\u01a1n gi\u1ea3n khi v\u1eadn h\u00e0nh v\u1edbi t\u1ea3i \u0111i\u1ec7n dung l\u1edbn tr\u00ean \u0111\u01b0\u1eddng d\u00e2y; AC \u0111\u01b0\u1ee3c d\u00f9ng cho ki\u1ec3m tra theo quy \u0111\u1ecbnh v\u00ec kh\u1ea3 n\u0103ng ki\u1ec3m tra c\u00e1ch \u0111i\u1ec7n \u1edf c\u1ea3 hai c\u1ef1c t\u00ednh d\u01b0\u01a1ng v\u00e0 \u00e2m gi\u1ed1ng nh\u01b0 \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf.<\/p>\n<p>C\u1ea7n nh\u1edb r\u1eb1ng \u0111i\u1ec7n \u00e1p th\u1eed kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n \u00e1p c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn trong m\u1ea1ch nh\u01b0 t\u1ee5 Y ho\u1eb7c optocoupler, v.v., v\u00ec ch\u00fang c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng trong qu\u00e1 tr\u00ecnh th\u1eed.<\/p>\n<h2>Ti\u00eau ch\u00ed \u0110\u1ea1t\/Kh\u00f4ng \u0111\u1ea1t: \u0110i\u1ec1u g\u00ec \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 k\u1ebft qu\u1ea3 \u0111\u1ea1t?<\/h2>\n<p>M\u1ed9t b\u00e0i ki\u1ec3m tra hi-pot \u0111\u1ea1t khi <strong>kh\u00f4ng x\u1ea3y ra s\u1ef1 c\u1ed1 \u0111\u1ee9t m\u1ea1ch v\u00e0 d\u00f2ng r\u00f2 gi\u1eef d\u01b0\u1edbi gi\u1edbi h\u1ea1n ti\u00eau chu\u1ea9n<\/strong>. Gi\u1edbi h\u1ea1n \u0111i\u1ec3n h\u00ecnh:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u1ee8ng d\u1ee5ng \/ Ti\u00eau chu\u1ea9n<\/th>\n<th>Gi\u1edbi h\u1ea1n d\u00f2ng r\u00f2<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>IEC 60950 \/ 62368 c\u00e1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n<\/td>\n<td>\u22643.5mA (AC) ho\u1eb7c \u22642mA (DC)<\/td>\n<\/tr>\n<tr>\n<td>IEC 60950 \/ 62368 c\u00e1ch \u0111i\u1ec7n t\u0103ng c\u01b0\u1eddng<\/td>\n<td>\u22640,25mA<\/td>\n<\/tr>\n<tr>\n<td>IEC 60601 y t\u1ebf (lo\u1ea1i BF, b\u00ecnh th\u01b0\u1eddng)<\/td>\n<td>\u22640,1mA<\/td>\n<\/tr>\n<tr>\n<td>IEC 60601 y t\u1ebf (l\u1ed7i \u0111\u01a1n)<\/td>\n<td>\u22640,5mA<\/td>\n<\/tr>\n<tr>\n<td>ISO 16750 \u00f4 t\u00f4<\/td>\n<td>\u22641mA (500-1.000V DC)<\/td>\n<\/tr>\n<tr>\n<td>Gi\u1edbi h\u1ea1n n\u1ed9i b\u1ed9 nh\u00e0 m\u00e1y<\/td>\n<td>Th\u01b0\u1eddng l\u00e0 50-80% c\u1ee7a ti\u00eau chu\u1ea9n (bi\u00ean an to\u00e0n)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 3 d\u1ea5u hi\u1ec7u c\u1ee7a s\u1ef1 c\u1ed1:<\/p>\n<ul>\n<li>\u0110\u1ed9t bi\u1ebfn d\u00f2ng r\u00f2 - d\u00f2ng c\u00f3 th\u1ec3 \u0111o t\u1eeb microampe \u0111\u1ebfn miliampe.<\/li>\n<li>Th\u1ea5t b\u1ea1i \u0111i\u1ec7n \u00e1p th\u1eed - m\u1ea1ch h\u1edf, c\u00e1ch \u0111i\u1ec7n kh\u00f4ng c\u00f2n nguy\u00ean v\u1eb9n v\u00e0 tr\u1edf n\u00ean d\u1eabn \u0111i\u1ec7n.<\/li>\n<li>Xu\u1ea5t hi\u1ec7n d\u1ea5u hi\u1ec7u th\u1ecb gi\u00e1c ho\u1eb7c \u00e2m thanh, nh\u01b0 tia l\u1eeda, kh\u00f3i ho\u1eb7c ti\u1ebfng \u1ed3n \u0111\u1ed9t ng\u1ed9t.<\/li>\n<\/ul>\n<p>C\u1ea7n gi\u1ea3i th\u00edch r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t quan tr\u1ecdng gi\u1eefa d\u00f2ng r\u00f2 \u0111i\u1ec7n dung nh\u1ecf, \u1ed5n \u0111\u1ecbnh x\u1ea3y ra d\u1ea7n d\u1ea7n (\u1ed5n \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh t\u0103ng \u0111i\u1ec7n \u00e1p) v\u00e0 s\u1ef1 c\u1ed1 \u0111\u1ee9t m\u1ea1ch x\u1ea3y ra \u0111\u1ed9t ng\u1ed9t. C\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh cho c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 v\u1eady ch\u1ec9 ra d\u00f2ng microampe \u0111\u1ebfn miliampe th\u1ea5p \u2014 ngh\u0129a l\u00e0 ch\u00fang th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi ng\u01b0\u1ee1ng v\u00e0 thi\u1ebft b\u1ecb \u0111o cho k\u1ebft qu\u1ea3 \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian gi\u1eef \u0111i\u1ec7n \u00e1p.<\/p>\n<h2>M\u00e1y ki\u1ec3m tra Hi-Pot v\u00e0 Megger: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/h2>\n<p>Hai thi\u1ebft b\u1ecb n\u00e0y th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u1eabn, nh\u01b0ng ch\u00fang \u0111o c\u00e1c th\u00f4ng s\u1ed1 kh\u00e1c nhau:<\/p>\n<table>\n<thead>\n<tr>\n<th>T\u00ednh n\u0103ng<\/th>\n<th>Megger (M\u00e1y \u0111o \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n)<\/th>\n<th>M\u00e1y ki\u1ec3m tra Hi-Pot<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110o l\u01b0\u1eddng g\u00ec<\/td>\n<td><strong>\u0110i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n<\/strong> b\u1eb1ng megaohm (M\u03a9)<\/td>\n<td><strong>D\u00f2ng r\u00f2<\/strong> \u1edf \u0111i\u1ec7n \u00e1p cao, v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n \u00e1p \u0111i\u1ec3n h\u00ecnh<\/td>\n<td>250-1.000V DC<\/td>\n<td>1,000-10,000V+ AC ho\u1eb7c DC<\/td>\n<\/tr>\n<tr>\n<td>K\u1ebft qu\u1ea3<\/td>\n<td>\u0110\u1ecdc \u0111i\u1ec7n tr\u1edf (cao h\u01a1n = t\u1ed1t h\u01a1n)<\/td>\n<td>\u0110\u1ea1t\/kh\u00f4ng \u0111\u1ea1t d\u1ef1a tr\u00ean gi\u1edbi h\u1ea1n d\u00f2ng \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td>S\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/td>\n<td>\u0110\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng c\u00e1ch \u0111i\u1ec7n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng\/b\u1ea3o tr\u00ec<\/td>\n<td>Ki\u1ec3m tra an to\u00e0n nh\u00e0 m\u00e1y v\u00e0 ki\u1ec3m tra lo\u1ea1i<\/td>\n<\/tr>\n<tr>\n<td>M\u1ee9c \u0111\u1ed9 c\u0103ng th\u1eb3ng<\/td>\n<td>Th\u1ea5p; an to\u00e0n cho ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3<\/td>\n<td>Cao; g\u00e2y \u00e1p l\u1ef1c c\u00e1ch \u0111i\u1ec7n \u0111\u1ebfn gi\u1edbi h\u1ea1n<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td>Th\u01b0\u1eddng d\u00f9ng pin<\/td>\n<td>H\u1ea7u nh\u01b0 lu\u00f4n d\u00f9ng ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u1ec3 nh\u00ecn nh\u1eadn m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, megger cho bi\u1ebft hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1ch \u0111i\u1ec7n (m\u1ed9t \u0111i\u1ec7n tr\u1edf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c theo d\u00f5i theo th\u1eddi gian) trong khi m\u00e1y th\u1eed hi-pot cho th\u1ea5y li\u1ec7u c\u00e1ch \u0111i\u1ec7n c\u00f3 \u0111\u1ee7 t\u1ed1t \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t m\u1ee9c c\u1ee5 th\u1ec3 hay kh\u00f4ng (\u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t). Trong s\u1ea3n xu\u1ea5t, ki\u1ec3m tra hi-pot l\u00e0 b\u00e0i ki\u1ec3m tra an to\u00e0n b\u1eaft bu\u1ed9c trong khi b\u1ea3o tr\u00ec d\u1ef1a v\u00e0o c\u00e1c b\u00e0i ki\u1ec3m tra megger \u2014 c\u1ea3 hai \u0111\u1ec1u l\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a quy tr\u00ecnh ki\u1ec3m tra c\u00e1ch \u0111i\u1ec7n ho\u00e0n ch\u1ec9nh.<\/p>\n<h2>C\u00e1c lo\u1ea1i ki\u1ec3m tra Hi-Pot v\u00e0 \u1ee8ng d\u1ee5ng<\/h2>\n<ul>\n<li>Ki\u1ec3m tra hi-pot AC: ti\u00eau chu\u1ea9n cho c\u00e1c b\u00e0i ki\u1ec3m tra lo\u1ea1i \u2014 bao g\u1ed3m vi\u1ec7c c\u0103ng th\u1eb3ng li\u00ean t\u1ee5c c\u00e1ch \u0111i\u1ec7n \u1edf hai c\u1ef1c, g\u1ea7n nh\u1ea5t v\u1edbi th\u1ef1c t\u1ebf.<\/li>\n<li>Ki\u1ec3m tra hi-pot DC: \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t, nhanh h\u01a1n ki\u1ec3m tra hi-pot AC v\u00e0 kh\u00f4ng t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n ph\u1ea3n \u1ee9ng trong qu\u00e1 tr\u00ecnh; tuy nhi\u00ean, n\u00f3 ch\u1ec9 c\u0103ng th\u1eb3ng t\u1ea5t c\u1ea3 c\u00e1ch \u0111i\u1ec7n \u1edf m\u1ed9t c\u1ef1c duy nh\u1ea5t.<\/li>\n<li>Ki\u1ec3m tra lo\u1ea1i (ch\u1ee9ng nh\u1eadn): bao g\u1ed3m ki\u1ec3m tra \u1edf \u0111i\u1ec7n \u00e1p ti\u00eau chu\u1ea9n trong s\u00e1u m\u01b0\u01a1i gi\u00e2y cho c\u00e1c m\u1eabu \u0111\u1ea1i di\u1ec7n cho s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn.<\/li>\n<li>Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3: c\u1ea7n th\u1ef1c hi\u1ec7n cho m\u1ed7i \u0111\u01a1n v\u1ecb trong 1-2 gi\u00e2y, ki\u1ec3m tra \u1edf \u0111i\u1ec7n \u00e1p cao h\u01a1n kho\u1ea3ng 20% \u0111\u1ec3 lo\u1ea1i b\u1ecf l\u1ed7i s\u1ea3n xu\u1ea5t (r\u00f2 h\u00e0n, d\u00e2y b\u1ecb k\u1eb9p, v.v.) m\u00e0 kh\u00f4ng l\u00e0m ch\u1eadm d\u00e2y chuy\u1ec1n.<\/li>\n<\/ul>\n<p>C\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong ngu\u1ed3n \u0111i\u1ec7n v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, thi\u1ebft b\u1ecb gia d\u1ee5ng, \u0111\u1ed9ng c\u01a1 v\u00e0 b\u01a1m, m\u00e1y bi\u1ebfn \u00e1p, thi\u1ebft b\u1ecb y t\u1ebf v\u00e0 thi\u1ebft b\u1ecb xe \u0111i\u1ec7n, b\u1ea3ng m\u00e1y c\u00f4ng nghi\u1ec7p, l\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in, \u0111\u1ea7u n\u1ed1i, c\u00e1p v\u00e0 s\u1ea3n ph\u1ea9m chi\u1ebfu s\u00e1ng. Trong th\u1ebf gi\u1edbi s\u1ea3n xu\u1ea5t, ki\u1ec3m tra hi-pot l\u00e0 m\u1ed9t tr\u1ea1m ti\u00eau chu\u1ea9n tr\u00ean c\u00e1c d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p v\u00e0 ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng \u2014 c\u00f9ng lo\u1ea1i thi\u1ebft b\u1ecb ki\u1ec3m tra t\u00edch h\u1ee3p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t c\u1ea7u dao, \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong <a href=\"https:\/\/benlongkj.com\/vi\/blog\/circuit-breaker-manufacturers-automation\/\">s\u1ea3n xu\u1ea5t c\u1ea7u dao t\u1ef1 \u0111\u1ed9ng<\/a> t\u1ed5ng quan, c\u00f9ng v\u1edbi <a href=\"https:\/\/benlongkj.com\/vi\/blog\/how-to-test-a-circuit-breaker\/\">h\u01b0\u1edbng d\u1eabn ki\u1ec3m tra c\u1ea7u dao<\/a> cho ph\u00eda \u0111i\u1ec7n \u00e1p th\u1ea5p c\u1ee7a c\u00f9ng h\u1ec7 th\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<h2>Thi\u1ebft b\u1ecb v\u00e0 C\u00f4ng c\u1ee5<\/h2>\n<p>B\u1ed9 thi\u1ebft l\u1eadp ki\u1ec3m tra hi-pot y\u00eau c\u1ea7u c\u00e1c m\u1ee5c sau:<\/p>\n<ul>\n<li>M\u00e1y th\u1eed hi-pot (m\u00e1y th\u1eed ch\u1ecbu \u0111i\u1ec7n m\u00f4i): l\u00e0 h\u1ec7 th\u1ed1ng cung c\u1ea5p \u0111i\u1ec7n \u00e1p c\u1ea7n thi\u1ebft cho ki\u1ec3m tra v\u00e0 \u0111o l\u01b0\u1eddng b\u1ea5t k\u1ef3 r\u00f2 r\u1ec9 n\u00e0o. N\u00ean ch\u1ecdn m\u1eabu c\u00f3 th\u1ec3 cung c\u1ea5p \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra \u00edt nh\u1ea5t g\u1ea5p \u0111\u00f4i \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ki\u1ec3m tra. H\u1ea7u h\u1ebft c\u00e1c b\u00e0i ki\u1ec3m tra \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf 5kV tr\u1edf l\u00ean.<\/li>\n<li>D\u00e2y d\u1eabn v\u00e0 \u0111\u1ed3 g\u00e1 ki\u1ec3m tra: d\u00e2y d\u1eabn ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cho \u0111i\u1ec7n \u00e1p cao; ngo\u00e0i ra ph\u1ea3i c\u00f3 b\u1ed9 s\u1ea1c c\u00e1ch \u0111i\u1ec7n.<\/li>\n<li>An to\u00e0n: h\u1ec7 th\u1ed1ng ph\u1ea3i c\u00f3 c\u01a1 ch\u1ebf kh\u1edfi \u0111\u1ed9ng b\u1eb1ng hai tay v\u00e0 li\u00ean k\u1ebft n\u1ed1i \u0111\u1ea5t an to\u00e0n.<\/li>\n<li>H\u1ec7 th\u1ed1ng x\u1ea3: c\u1ea7n thi\u1ebft cho m\u00e1y th\u1eed DC \u0111\u1ec3 x\u1ea3 \u0111i\u1ec7n t\u00edch c\u1ee7a thi\u1ebft b\u1ecb sau khi ki\u1ec3m tra.<\/li>\n<li>Hi\u1ec7u chu\u1ea9n: c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00e1c m\u00e1y th\u1eed \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n \u0111\u1ecbnh k\u1ef3.<\/li>\n<\/ul>\n<h2>Quy tr\u00ecnh ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc<\/h2>\n<ul>\n<li>L\u00e0m cho DUT kh\u00f4ng c\u00f2n ngu\u1ed3n \u0111i\u1ec7n v\u00e0 x\u1ea3 \u0111i\u1ec7n \u2014 t\u00e1ch kh\u1ecfi m\u1ea1ng v\u00e0 x\u1ea3 c\u00e1c dung l\u01b0\u1ee3ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ecdc \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p d\u01b0 b\u1eb1ng kh\u00f4ng tr\u00ean thi\u1ebft b\u1ecb.<\/li>\n<li>K\u1ebft n\u1ed1i m\u00e1y th\u1eed \u2014 m\u1ed9t c\u1ef1c v\u1edbi khung m\u00e1y, c\u1ef1c c\u00f2n l\u1ea1i v\u1edbi m\u1ea1ch \u0111i\u1ec7n (th\u01b0\u1eddng c\u00f3 \u1ed5 c\u1eafm cho k\u1ebft n\u1ed1i n\u00e0y tr\u00ean m\u00e1y th\u1eed).<\/li>\n<li>Ch\u01b0\u01a1ng tr\u00ecnh c\u00e0i \u0111\u1eb7t thi\u1ebft b\u1ecb \u2013 l\u01b0\u1ee3ng \u0111i\u1ec7n \u00e1p \u00e1p d\u1ee5ng (b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c k\u1ef9 thu\u1eadt ti\u00eau chu\u1ea9n), th\u1eddi gian \u0111o (t\u1ed1i thi\u1ec3u 60 gi\u00e2y cho c\u00e1c b\u00e0i ki\u1ec3m tra 60 gi\u00e2y, 1-2 gi\u00e2y cho c\u00e1c thi\u1ebft b\u1ecb), gi\u1edbi h\u1ea1n r\u00f2 r\u1ec9 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c v\u00e0 t\u1ed1c \u0111\u1ed9 t\u0103ng \u0111i\u1ec7n \u00e1p.<\/li>\n<li>N\u1ebfu b\u1ea1n s\u1ebd th\u1ef1c hi\u1ec7n ki\u1ec3m tra DC, h\u00e3y ch\u1eafc ch\u1eafn ch\u1ecdn gi\u00e1 tr\u1ecb th\u1eddi gian x\u1ea3 c\u1ea7n thi\u1ebft.<\/li>\n<li>Th\u1ef1c hi\u1ec7n ki\u1ec3m so\u00e1t: \u0111i\u1ec7n \u00e1p t\u0103ng, gi\u1eef v\u00e0 thi\u1ebft b\u1ecb \u0111o d\u00f2ng r\u00f2. L\u01b0u k\u1ebft qu\u1ea3.<\/li>\n<li>L\u01b0u tr\u1eef t\u00e0i li\u1ec7u: d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t l\u01b0u l\u1ea1i l\u1ecbch s\u1eed m\u1ed7i l\u1ea7n ch\u1ea1y d\u1ef1a tr\u00ean c\u00f9ng m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tri\u1ec3n khai v\u1edbi thi\u1ebft k\u1ebf d\u00e2y chuy\u1ec1n t\u1ef1 \u0111\u1ed9ng.<\/li>\n<\/ul>\n<p>Khi ki\u1ec3m tra l\u1ea7n \u0111\u1ea7u ti\u00ean, ph\u1ea3i \u0111\u00e1nh gi\u00e1 \u00edt nh\u1ea5t tr\u00ean m\u1ed9t m\u1eabu t\u1ed1t \u0111\u00e3 bi\u1ebft, c\u0169ng nh\u01b0 m\u1ed9t m\u1eabu l\u1ed7i \u0111\u1ec3 x\u00e1c minh \u0111\u1ed9c l\u1eadp vi\u1ec7c th\u1ea5t b\u1ea1i ki\u1ec3m tra \u2014 n\u1ebfu thi\u1ebft b\u1ecb ki\u1ec3m tra kh\u00f4ng bao gi\u1edd b\u00e1o l\u1ed7i \u0111\u1ea7u ra, th\u00ec n\u00f3 kh\u00f4ng \u0111\u00e1ng tin c\u1eady.<\/p>\n<h2>T\u1ea1i sao b\u00e0i ki\u1ec3m tra Hi-Pot c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i?<\/h2>\n<table>\n<thead>\n<tr>\n<th>Nguy\u00ean nh\u00e2n<\/th>\n<th>Tri\u1ec7u ch\u1ee9ng<\/th>\n<th>Kh\u1eafc ph\u1ee5c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1eafn thi\u1ebfc \/ nhi\u1ec5m b\u1ea9n d\u1eabn \u0111i\u1ec7n tr\u00ean PCB<\/td>\n<td>D\u00f2ng r\u00f2 t\u0103ng \u0111\u1ed9t bi\u1ebfn \u1edf \u0111i\u1ec7n \u00e1p ki\u1ec3m tra<\/td>\n<td>C\u1ea3i thi\u1ec7n vi\u1ec7c l\u00e0m s\u1ea1ch; x\u00e1c minh quy tr\u00ecnh h\u00e0n s\u00f3ng<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1ch \u0111i\u1ec7n d\u00e2y b\u1ecb k\u1eb9p ho\u1eb7c h\u01b0 h\u1ecfng<\/td>\n<td>Ph\u00e1 v\u1ee1 t\u1ea1i \u0111i\u1ec3m b\u1ecb h\u01b0 h\u1ecfng<\/td>\n<td>Ki\u1ec3m tra \u0111\u1ecbnh tuy\u1ebfn d\u00e2y; s\u1eeda ch\u1eefa l\u1eafp r\u00e1p<\/td>\n<\/tr>\n<tr>\n<td>Kho\u1ea3ng c\u00e1ch creepage\/clearance sai<\/td>\n<td>Ph\u00f3ng \u0111i\u1ec7n h\u1ed3 quang qua khe h\u1edf<\/td>\n<td>R\u00e0 so\u00e1t thi\u1ebft k\u1ebf theo b\u1ea3ng kho\u1ea3ng c\u00e1ch ti\u00eau chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>Linh ki\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c th\u1ea5p h\u01a1n (v\u00ed d\u1ee5, t\u1ee5 Y)<\/td>\n<td>Linh ki\u1ec7n h\u1ecfng tr\u01b0\u1edbc c\u00e1ch \u0111i\u1ec7n<\/td>\n<td>Ng\u1eaft k\u1ebft n\u1ed1i linh ki\u1ec7n theo ti\u00eau chu\u1ea9n ho\u1eb7c thi\u1ebft k\u1ebf l\u1ea1i<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 \u1ea9m \/ h\u01a1i \u1ea9m trong s\u1ea3n ph\u1ea9m<\/td>\n<td>D\u00f2ng r\u00f2 cao h\u01a1n b\u00ecnh th\u01b0\u1eddng<\/td>\n<td>Ki\u1ec3m so\u00e1t m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t; l\u00e0m kh\u00f4 tr\u01b0\u1edbc khi ki\u1ec3m tra<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1ch \u0111i\u1ec7n cu\u1ed9n d\u00e2y bi\u1ebfn \u00e1p\/\u0111\u1ed9ng c\u01a1 b\u1ecb l\u1ed7i<\/td>\n<td>Ph\u00e1 v\u1ee1 t\u1ea1i cu\u1ed9n d\u00e2y<\/td>\n<td>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng nh\u00e0 cung c\u1ea5p; ki\u1ec3m tra \u0111\u1ea7u v\u00e0o<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea5u h\u00ecnh sai thi\u1ebft b\u1ecb ki\u1ec3m tra<\/td>\n<td>L\u1ed7i gi\u1ea3 (\u0111i\u1ec7n \u00e1p qu\u00e1 cao, gi\u1edbi h\u1ea1n qu\u00e1 th\u1ea5p)<\/td>\n<td>X\u00e1c minh c\u00e0i \u0111\u1eb7t theo ti\u00eau chu\u1ea9n; hi\u1ec7u chu\u1ea9n thi\u1ebft b\u1ecb ki\u1ec3m tra<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u1ed1i v\u1edbi b\u1ed9 ph\u1eadn s\u1ea3n xu\u1ea5t, th\u1ea5t b\u1ea1i hi-pot l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n may m\u1eafn \u2013 n\u00f3 ph\u00e1t hi\u1ec7n m\u1ed9t \u0111\u1eb7c t\u00ednh l\u1ed7i c\u1ee7a s\u1ea3n ph\u1ea9m. Ph\u1ea3n \u1ee9ng c\u1ee7a b\u1ed9 ph\u1eadn k\u1ef9 thu\u1eadt n\u00ean l\u00e0 gi\u1ea3i quy\u1ebft nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a v\u1ea5n \u0111\u1ec1 thay v\u00ec \u0111i\u1ec1u ch\u1ec9nh quy tr\u00ecnh ki\u1ec3m tra.<\/p>\n<h2>An to\u00e0n v\u00e0 Th\u1ef1c h\u00e0nh T\u1ed1t nh\u1ea5t<\/h2>\n<ul>\n<li>Lu\u00f4n coi tr\u1ea1m ki\u1ec3m tra hi-pot l\u00e0 nguy hi\u1ec3m. N\u00f3 t\u1ea1o ra h\u00e0ng ngh\u00ecn volt v\u00e0 c\u00f3 th\u1ec3 truy\u1ec1n d\u00f2ng \u0111i\u1ec7n nguy hi\u1ec3m. Thi\u1ebft b\u1ecb nh\u01b0 v\u1eady ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi nh\u1eefng ng\u01b0\u1eddi c\u00f3 k\u1ef9 n\u0103ng.<\/li>\n<li>H\u00e3y ch\u1eafc ch\u1eafn s\u1eed d\u1ee5ng c\u00e1c kh\u00f3a li\u00ean \u0111\u1ed9ng: v\u1eadn h\u00e0nh hai tay v\u00e0 kh\u00f3a li\u00ean \u0111\u1ed9ng v\u1ecf b\u1ea3o v\u1ec7 an to\u00e0n, c\u0169ng nh\u01b0 t\u00edn hi\u1ec7u b\u00e1o \u0111\u1ed9ng hi\u1ec3n th\u1ecb tr\u00ean thi\u1ebft b\u1ecb ki\u1ec3m tra.<\/li>\n<li>Kh\u00f4ng ch\u1ea1m v\u00e0o DUT trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra v\u00e0 x\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111\u00e3 ki\u1ec3m tra DC tr\u01b0\u1edbc khi x\u1eed l\u00fd ch\u00fang.<\/li>\n<li>H\u00e3y ch\u1eafc ch\u1eafn n\u1ed1i \u0111\u1ea5t \u0111\u00fang c\u00e1ch: thi\u1ebft b\u1ecb ki\u1ec3m tra, \u0111\u1ed3 g\u00e1 ki\u1ec3m tra v\u00e0 khu v\u1ef1c l\u00e0m vi\u1ec7c c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh.<\/li>\n<li>Tr\u00e1nh \u0111i\u1ec1u ki\u1ec7n \u1ea9m \u01b0\u1edbt (\u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i 40-60% RH \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb) \u0111\u1ec3 lo\u1ea1i tr\u1eeb l\u1ed7i sai do \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 \u1ea9m.<\/li>\n<li>H\u00e3y ch\u1eafc ch\u1eafn hi\u1ec7u chu\u1ea9n thi\u1ebft b\u1ecb ki\u1ec3m tra hi-pot \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n m\u1ed7i n\u0103m v\u00e0 ki\u1ec3m tra n\u00f3 v\u1edbi c\u00e1c \u0111i\u1ec3m tham chi\u1ebfu.<\/li>\n<li>Vi\u1ec7c l\u01b0u k\u1ebft qu\u1ea3 ki\u1ec3m tra c\u00f9ng v\u1edbi s\u1ed1 s\u00ea-ri thi\u1ebft b\u1ecb l\u00e0 quan tr\u1ecdng \u0111\u1ec3 c\u00f3 th\u1ec3 theo d\u00f5i qu\u00e1 tr\u00ecnh ki\u1ec3m tra.<\/li>\n<li>H\u00e3y ch\u1eafc ch\u1eafn bao g\u1ed3m trong t\u00e0i li\u1ec7u c\u1ee7a b\u1ea1n c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ki\u1ec3m tra nh\u01b0 \u0111i\u1ec7n \u00e1p, th\u1eddi gian, gi\u1edbi h\u1ea1n \u0111o v\u00e0 ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u1ee9ng.<\/li>\n<\/ul>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>\u0110\u1ecdc s\u1ed1 \u0111\u1ea1t y\u00eau c\u1ea7u cho b\u00e0i ki\u1ec3m tra HI POT l\u00e0 g\u00ec?<\/h3>\n<p>M\u1ed9t b\u00e0i ki\u1ec3m tra hi-pot c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 th\u00e0nh c\u00f4ng mi\u1ec5n l\u00e0 kh\u00f4ng x\u1ea3y ra s\u1ef1 c\u1ed1 h\u1ecfng h\u00f3c v\u00e0 d\u00f2ng r\u00f2 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p trong su\u1ed1t th\u1eddi gian ki\u1ec3m tra \u2014 t\u1ee9c l\u00e0, l\u00ean \u0111\u1ebfn 3,5mA (AC) ho\u1eb7c 2mA (DC) cho c\u00e1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n theo ti\u00eau chu\u1ea9n IEC 60950\/62368, l\u00ean \u0111\u1ebfn 0,25mA cho c\u00e1ch \u0111i\u1ec7n gia c\u01b0\u1eddng, l\u00ean \u0111\u1ebfn 0,1mA cho thi\u1ebft b\u1ecb y t\u1ebf v\u1edbi c\u00e1ch \u0111i\u1ec7n lo\u1ea1i BF theo ti\u00eau chu\u1ea9n IEC 60601, v\u00e0 l\u00ean \u0111\u1ebfn 1mA cho thi\u1ebft b\u1ecb \u00f4 t\u00f4 theo ti\u00eau chu\u1ea9n ISO 16750. Trong th\u1ef1c t\u1ebf, ph\u1ea7n l\u1edbn c\u00e1c s\u1ea3n ph\u1ea9m t\u1ed1t th\u1ec3 hi\u1ec7n con s\u1ed1 th\u1ea5p h\u01a1n nhi\u1ec1u (t\u00ednh b\u1eb1ng microampe) v\u1edbi gi\u00e1 tr\u1ecb \u1ed5n \u0111\u1ecbnh, do \u0111\u00f3 kh\u00f4ng cho th\u1ea5y d\u1ea5u hi\u1ec7u h\u1ecfng h\u00f3c.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa megger v\u00e0 hipot l\u00e0 g\u00ec?<\/h3>\n<p>Megger \u0111o \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n b\u1eb1ng megaohm \u1edf \u0111i\u1ec7n \u00e1p DC th\u1ea5p (250\u20131.000V) \u2014 m\u1ed9t gi\u00e1 tr\u1ecb ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn trong l\u0129nh v\u1ef1c v\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng b\u1ea3o tr\u00ec. M\u00e1y ki\u1ec3m tra hi-pot ho\u1ea1t \u0111\u1ed9ng \u1edf \u0111i\u1ec7n \u00e1p cao (1.000V tr\u1edf l\u00ean) v\u00e0 \u0111o d\u00f2ng r\u00f2 so v\u1edbi ng\u01b0\u1ee1ng \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t. T\u00f3m l\u1ea1i, megger = hi\u1ec7u qu\u1ea3 c\u00e1ch \u0111i\u1ec7n; hi-pot = kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p qu\u00e1 m\u1ee9c.<\/p>\n<h3>T\u1ea1i sao b\u00e0i ki\u1ec3m tra hipot c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i?<\/h3>\n<p>Th\u1ea5t b\u1ea1i hi-pot x\u1ea3y ra khi d\u00f2ng r\u00f2 v\u01b0\u1ee3t qu\u00e1 ho\u1eb7c c\u00e1ch \u0111i\u1ec7n b\u1ecb h\u01b0 h\u1ecfng, th\u01b0\u1eddng do: h\u00e0n ho\u1eb7c b\u1ee5i d\u1eabn \u0111i\u1ec7n tr\u00ean PCB, d\u00e2y b\u1ecb k\u1eb9p ho\u1eb7c c\u00e1ch \u0111i\u1ec7n b\u1ecb h\u1ecfng, kho\u1ea3ng c\u00e1ch creepage\/clearance kh\u00f4ng \u0111\u1ee7, c\u00e1c linh ki\u1ec7n (nh\u01b0 t\u1ee5 Y) c\u00f3 \u0111i\u1ec7n \u00e1p ng\u01b0\u1ee1ng th\u1ea5p h\u01a1n \u0111i\u1ec7n \u00e1p ki\u1ec3m tra, n\u01b0\u1edbc trong s\u1ea3n ph\u1ea9m, ho\u1eb7c c\u00e1ch \u0111i\u1ec7n cu\u1ed9n d\u00e2y bi\u1ebfn \u00e1p\/\u0111\u1ed9ng c\u01a1 b\u1ecb h\u1ecfng. C\u1ea5u h\u00ecnh m\u00e1y ki\u1ec3m tra kh\u00f4ng \u0111\u00fang (\u0111i\u1ec7n \u00e1p qu\u00e1 cao ho\u1eb7c gi\u1edbi h\u1ea1n qu\u00e1 th\u1ea5p) c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 kh\u00f4ng ch\u00ednh x\u00e1c \u2014 lu\u00f4n ki\u1ec3m tra c\u1ea5u h\u00ecnh theo ti\u00eau chu\u1ea9n.<\/p>\n<h3>T\u00ean g\u1ecdi kh\u00e1c c\u1ee7a b\u00e0i ki\u1ec3m tra hipot l\u00e0 g\u00ec?<\/h3>\n<p>B\u00e0i ki\u1ec3m tra hi-pot c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ki\u1ec3m tra ch\u1ecbu \u0111i\u1ec7n m\u00f4i (thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c nhau), ki\u1ec3m tra \u0111i\u1ec7n \u00e1p cao, ki\u1ec3m tra \u0111i\u1ec7n \u00e1p ti\u1ec1m n\u0103ng cao, v\u00e0 tr\u01b0\u1edbc \u0111\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ki\u1ec3m tra tia l\u1eeda ho\u1eb7c ki\u1ec3m tra \u00e1p l\u1ef1c. \u201cHi-pot\u201d l\u00e0 thu\u1eadt ng\u1eef th\u00f4ng d\u1ee5ng trong ng\u00e0nh \u0111\u1ec3 ch\u1ec9 ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n \u00e1p ti\u1ec1m n\u0103ng cao v\u1edbi c\u00e1c t\u00ean g\u1ecdi kh\u00e1c nhau trong t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn, ti\u00eau chu\u1ea9n v\u00e0 c\u00e1c cu\u1ed9c trao \u0111\u1ed5i t\u1ea1i nh\u00e0 m\u00e1y.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/vitrek.com\/iec-60950-hipot-testing-requirements-test-setup-and-compliance-guidelines\/\" rel=\"nofollow noopener\" target=\"_blank\">Vitrek \u2014 Y\u00eau c\u1ea7u v\u00e0 thi\u1ebft l\u1eadp ki\u1ec3m tra hipot IEC 60950<\/a><\/li>\n<li><a href=\"https:\/\/www.capelfpc.com\/company-news\/what-is-a-hi-pot\" rel=\"nofollow noopener\" target=\"_blank\">Capel \u2014 B\u00e0i ki\u1ec3m tra hi-pot l\u00e0 g\u00ec (c\u00f4ng th\u1ee9c \u0111i\u1ec7n \u00e1p, gi\u1edbi h\u1ea1n d\u00f2ng r\u00f2)<\/a><\/li>\n<li><a href=\"https:\/\/www.hipottester.net\/hipot-tester-insulation-testing\" rel=\"nofollow noopener\" target=\"_blank\">HiPot Tester \u2014 H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra c\u00e1ch \u0111i\u1ec7n b\u1eb1ng m\u00e1y hipot<\/a><\/li>\n<li><a href=\"https:\/\/www.jc-pcba.com\/InfoDetial\/10976.html\" rel=\"nofollow noopener\" target=\"_blank\">JC PCBA \u2014 Gi\u1edbi h\u1ea1n d\u00f2ng r\u00f2 v\u00e0 \u0111\u00e1nh gi\u00e1 h\u1ecfng h\u00f3c Hi-Pot<\/a><\/li>\n<li><a href=\"https:\/\/www.iec.ch\/\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60950-1 \/ IEC 62368-1 \/ IEC 60601-1 \u2014 ti\u00eau chu\u1ea9n an to\u00e0n<\/a><\/li>\n<li><a href=\"https:\/\/standards.ieee.org\/\" rel=\"nofollow noopener\" target=\"_blank\">UL &amp; IEEE \u2014 y\u00eau c\u1ea7u ki\u1ec3m tra ch\u1ecbu \u0111i\u1ec7n m\u00f4i<\/a><\/li>\n<\/ul>\n<h2>Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n<p>Ki\u1ec3m tra Hi-pot \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t quy tr\u00ecnh m\u00e0 trong \u0111\u00f3 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n s\u1ebd tr\u1ea3i qua m\u1ed9t b\u00e0i ki\u1ec3m tra tr\u01b0\u1edbc khi \u0111\u01b0\u1ee3c tuy\u00ean b\u1ed1 l\u00e0 an to\u00e0n; k\u1ef9 thu\u1eadt n\u00e0y bao g\u1ed3m vi\u1ec7c truy\u1ec1n m\u1ed9t \u0111i\u1ec7n \u00e1p r\u1ea5t cao qua l\u1edbp c\u00e1ch \u0111i\u1ec7n \u0111\u1ec3 \u0111o d\u00f2ng r\u00f2 r\u1ec9 cho bi\u1ebft li\u1ec7u l\u1edbp c\u00e1ch \u0111i\u1ec7n c\u00f3 \u0111ang ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang ch\u1ee9c n\u0103ng hay kh\u00f4ng. C\u00e1c c\u00f4ng th\u1ee9c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 sau: \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng nh\u00e2n v\u1edbi 2, c\u1ed9ng th\u00eam 1kg \u0111i\u1ec7n \u00e1p li\u00ean quan \u0111\u1ebfn c\u00e1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n theo y\u00eau c\u1ea7u, nh\u00e2n v\u1edbi 1,6kg cho c\u00e1ch \u0111i\u1ec7n t\u0103ng c\u01b0\u1eddng theo c\u00f9ng h\u01b0\u1edbng d\u1eabn, v\u00e0 th\u1eadm ch\u00ed nghi\u00eam ng\u1eb7t h\u01a1n \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb y t\u1ebf; n\u1ebfu thi\u1ebft b\u1ecb v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 kh\u00f4ng ph\u00e1t hi\u1ec7n l\u1ed7i trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra.<\/p>\n<p>Ki\u1ec3m tra Hi-pot v\u00e0 m\u1ed9t s\u1ed1 quy tr\u00ecnh kh\u00e1c trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t v\u00ec t\u1ea5t c\u1ea3 c\u00e1c \u0111\u01a1n v\u1ecb s\u1ea3n ph\u1ea9m \u0111\u1ec1u \u0111\u01b0\u1ee3c ki\u1ec3m tra ch\u1ec9 trong v\u00e0i gi\u00e2y v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh: r\u01a1i h\u00e0n, d\u00e2y ng\u1eafn, ho\u1eb7c kho\u1ea3ng c\u00e1ch kh\u00f4ng \u0111\u00fang. Tuy nhi\u00ean, ki\u1ec3m tra Hi-pot ch\u1ec9 n\u00ean \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn b\u1edfi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi mua v\u00ec h\u1ecd c\u1ea7n hi\u1ec3u v\u1ec1 ki\u1ec3m tra Hi-pot v\u00e0 ki\u1ec3m tra Mega \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ecdc k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c v\u00e0 ch\u1ea5p nh\u1eadn \u0111\u00fang c\u00e1ch. \u0110\u00f3 l\u00e0 suy ngh\u0129 \u0111\u1eb1ng sau <a href=\"https:\/\/benlongkj.com\/vi\/blog\/industrial-automation-solutions-efficiency-benefits\/\">c\u00e1c gi\u1ea3i ph\u00e1p s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng hi\u1ec7n \u0111\u1ea1i<\/a>: ki\u1ec3m tra an to\u00e0n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u00fang c\u00e1ch, m\u1ed7i \u0111\u01a1n v\u1ecb, m\u1ed7i l\u1ea7n.<\/p>","protected":false},"excerpt":{"rendered":"<p>Regarding the Power supply systems, electrical motors, transformers, and electric car charging stations, they undergo a testing process called \u201chi-pot test\u201d before leaving the production facility. Not many buyers might be aware of what hi-pot test consists of, so we will clarify what it actually means. Hi-pot is short for high potential test, which, in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1630,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1629","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1629","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/comments?post=1629"}],"version-history":[{"count":2,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1629\/revisions"}],"predecessor-version":[{"id":1633,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1629\/revisions\/1633"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media\/1630"}],"wp:attachment":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media?parent=1629"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/categories?post=1629"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/tags?post=1629"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}