{"id":1985,"date":"2026-10-27T10:36:59","date_gmt":"2026-10-27T10:36:59","guid":{"rendered":"https:\/\/benlongkj.com\/?p=1985"},"modified":"2026-10-27T10:37:02","modified_gmt":"2026-10-27T10:37:02","slug":"rccb-tester-instruments-test-benches","status":"publish","type":"post","link":"https:\/\/benlongkj.com\/vi\/blog\/rccb-tester-instruments-test-benches\/","title":{"rendered":"B\u1ed9 ki\u1ec3m tra RCCB: D\u1ee5ng c\u1ee5, B\u00e0n th\u1eed nghi\u1ec7m"},"content":{"rendered":"<p>Thi\u1ebft b\u1ecb d\u00f2ng r\u00f2 \u0111\u01b0\u1ee3c t\u1ea1o ra ch\u1ec9 v\u1edbi m\u1ed9t m\u1ee5c \u0111\u00edch duy nh\u1ea5t, \u0111\u00f3 l\u00e0 kh\u00f4ng th\u1ef1c s\u1ef1 hi\u1ec3n th\u1ecb d\u1ea5u hi\u1ec7u h\u1ecfng h\u00f3c. V\u1ebb ngo\u00e0i c\u1ee7a thi\u1ebft b\u1ecb kh\u00f4ng thay \u0111\u1ed5i, v\u00e0 kh\u00f4ng c\u00f3 d\u1ea5u hi\u1ec7u g\u00ec cho th\u1ea5y c\u00f3 s\u1ef1 c\u1ed1, \u0111i\u1ec1u n\u00e0y cho th\u1ea5y thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c trong vi\u1ec7c th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a n\u00f3.<\/p>\n<p>\u0110\u00e2y l\u00e0 c\u00f4ng vi\u1ec7c c\u1ee7a thi\u1ebft b\u1ecb ki\u1ec3m tra RCCB, c\u00e1c thi\u1ebft b\u1ecb bao g\u1ed3m c\u00e1c c\u00f4ng c\u1ee5 c\u1ea7m tay \u0111\u01a1n gi\u1ea3n trong t\u00fai th\u1ee3 \u0111i\u1ec7n \u0111\u1ebfn c\u00e1c tr\u1ea1m ki\u1ec3m tra ph\u1ee9c t\u1ea1p ki\u1ec3m tra nhi\u1ec1u RCCB trong nh\u00e0 m\u00e1y.<\/p>\n<blockquote><p>Ph\u1ea3n h\u1ed3i ng\u1eafn g\u1ecdn: Thi\u1ebft b\u1ecb ki\u1ec3m tra RCCB l\u00e0 c\u00e1c thi\u1ebft b\u1ecb ti\u00eam d\u00f2ng r\u00f2 c\u00f3 gi\u00e1 tr\u1ecb \u0111\u00e3 bi\u1ebft v\u00e0 \u0111o th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 RCCB ng\u1eaft m\u1ea1ch. Thi\u1ebft b\u1ecb ki\u1ec3m tra c\u1ea7m tay \u0111o th\u1eddi gian ng\u1eaft \u1edf c\u1ea3 ba gi\u00e1 tr\u1ecb d\u00f2ng r\u00f2 ti\u00eau chu\u1ea9n (\u00bd I\u0394n, I\u0394n v\u00e0 5 I\u0394n) v\u00e0 th\u1ef1c hi\u1ec7n ki\u1ec3m tra t\u0103ng d\u1ea7n. B\u00e0n ki\u1ec3m tra s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n t\u1ea5t c\u1ea3 c\u00e1c b\u00e0i ki\u1ec3m tra nh\u01b0 thi\u1ebft b\u1ecb c\u1ea7m tay nh\u01b0ng b\u1ed5 sung ki\u1ec3m tra kh\u00f4ng ng\u1eaft, ki\u1ec3m tra ch\u1ecbu \u0111i\u1ec7n m\u00f4i v\u00e0 c\u01a1 h\u1ecdc, \u0111\u1ed3ng th\u1eddi l\u01b0u th\u00f4ng tin theo s\u1ed1 s\u00ea-ri c\u1ee7a thi\u1ebft b\u1ecb. Thi\u1ebft b\u1ecb c\u1ea7m tay th\u1ef1c hi\u1ec7n ki\u1ec3m tra l\u1eafp \u0111\u1eb7t trong khi b\u00e0n ki\u1ec3m tra th\u1ef1c hi\u1ec7n ki\u1ec3m tra s\u1ea3n ph\u1ea9m.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1987\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/10\/RCCB-Tester-Instruments-Test-Benches.webp\" alt=\"Thi\u1ebft b\u1ecb ki\u1ec3m tra RCCB, B\u00e0n th\u1eed nghi\u1ec7m\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Nh\u1eefng g\u00ec m\u1ed9t b\u00e0i ki\u1ec3m tra RCCB th\u1ef1c s\u1ef1 \u0111o l\u01b0\u1eddng<\/h2>\n<p>N\u0103m ph\u00e9p \u0111o x\u00e1c \u0111\u1ecbnh thi\u1ebft b\u1ecb c\u00f3 t\u1ed1t hay kh\u00f4ng, v\u00e0 m\u1ed7i ph\u00e9p \u0111o ph\u00e1t hi\u1ec7n m\u1ed9t l\u1ed7i kh\u00e1c nhau.<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3m tra<\/th>\n<th>Nh\u1eefng g\u00ec \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng<\/th>\n<th>Nh\u1eefng g\u00ec \u0111\u01b0\u1ee3c ch\u1ee9ng minh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ki\u1ec3m tra kh\u00f4ng ng\u1eaft<\/td>\n<td>\u00bd I\u0394n trong m\u1ed9t kho\u1ea3ng th\u1eddi gian x\u00e1c \u0111\u1ecbnh<\/td>\n<td>Thi\u1ebft b\u1ecb kh\u00f4ng qu\u00e1 nh\u1ea1y v\u00e0 s\u1ebd kh\u00f4ng ng\u1eaft m\u1ea1ch v\u00f4 c\u1edb<\/td>\n<\/tr>\n<tr>\n<td>Th\u1eddi gian ng\u1eaft \u1edf I\u0394n<\/td>\n<td>D\u00f2ng r\u00f2 \u0111\u1ecbnh m\u1ee9c<\/td>\n<td>C\u1ea3m bi\u1ebfn v\u00e0 c\u01a1 ch\u1ebf \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng \u1edf ng\u01b0\u1ee1ng<\/td>\n<\/tr>\n<tr>\n<td>Ng\u1eaft nhanh \u1edf 5 I\u0394n<\/td>\n<td>N\u0103m l\u1ea7n d\u00f2ng r\u00f2 \u0111\u1ecbnh m\u1ee9c<\/td>\n<td>Thi\u1ebft b\u1ecb ng\u1eaft nhanh khi c\u00f3 l\u1ed7i nghi\u00eam tr\u1ecdng<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ec3m tra t\u0103ng d\u1ea7n<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n t\u0103ng d\u1ea7n<\/td>\n<td>\u0110i\u1ec3m ng\u1eaft th\u1ef1c t\u1ebf, so v\u1edbi th\u00f4ng s\u1ed1 tr\u00ean b\u1ea3ng t\u00ean<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ec3m tra DC (Lo\u1ea1i B)<\/td>\n<td>D\u00f2ng r\u00f2 DC m\u01b0\u1ee3t m\u00e0<\/td>\n<td>Thi\u1ebft b\u1ecb nh\u1eadn bi\u1ebft d\u00f2ng DC, \u0111i\u1ec1u m\u00e0 Lo\u1ea1i A kh\u00f4ng l\u00e0m \u0111\u01b0\u1ee3c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00dd ngh\u0129a c\u1ee7a g\u00f3c pha b\u1eb1ng v\u1edbi d\u00f2ng \u0111i\u1ec7n. M\u1ed9t thi\u1ebft b\u1ecb v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra ch\u1ec9 th\u1ef1c hi\u1ec7n \u1edf 0\u00b0 s\u1ebd kh\u00f4ng v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra th\u1ef1c hi\u1ec7n \u1edf 180\u00b0, cho th\u1ea5y s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a l\u1ed7i ch\u1ec9nh l\u01b0u n\u1eeda s\u00f3ng. Tuy nhi\u00ean, m\u1ed9t b\u00e0i ki\u1ec3m tra chuy\u00ean nghi\u1ec7p s\u1ebd xem x\u00e9t c\u1ea3 hai y\u1ebfu t\u1ed1 n\u00e0y.<\/p>\n<p>Ng\u01b0\u1ee1ng s\u1eed d\u1ee5ng cho thi\u1ebft b\u1ecb Lo\u1ea1i AC ho\u1eb7c Lo\u1ea1i A \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi ti\u00eau chu\u1ea9n IEC 61008-1 cho RCCB v\u00e0 IEC 61009-1 cho RCBO, v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra l\u1eafp \u0111\u1eb7t li\u00ean quan \u0111\u01b0\u1ee3c cung c\u1ea5p trong IEC 61557-6. \u0110\u1ed1i v\u1edbi thi\u1ebft b\u1ecb Lo\u1ea1i B, IEC 62423 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, \u0111i\u1ec1u n\u00e0y \u0111\u1eb7t ra th\u00e1ch th\u1ee9c cho c\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m tra, v\u00ec vi\u1ec7c t\u1ea1o ra d\u00f2ng DC m\u01b0\u1ee3t m\u00e0 ng\u1ee5 \u00fd r\u1eb1ng giai \u0111o\u1ea1n \u0111\u1ea7u ra kh\u00f4ng gi\u1ed1ng nh\u01b0 giai \u0111o\u1ea1n c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra d\u00f2ng AC.<\/p>\n<h2>C\u00e1c thi\u1ebft b\u1ecb<\/h2>\n<p>C\u00f3 ba lo\u1ea1i thi\u1ebft b\u1ecb kh\u00e1c nhau v\u00e0 m\u1ee5c \u0111\u00edch c\u1ee7a ch\u00fang c\u0169ng kh\u00e1c nhau.<\/p>\n<p>M\u00e1y \u0111o \u0111a n\u0103ng. Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0y ki\u1ec3m tra tr\u1edf kh\u00e1ng v\u00f2ng l\u1eb7p, \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n, t\u00ednh li\u00ean t\u1ee5c c\u1ee7a m\u1ea1ch \u0111i\u1ec7n, th\u1eddi gian RCD ng\u1eaft m\u1ea1ch v\u00e0 t\u0103ng d\u1ea7n trong c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb. \u0110\u1eb7c bi\u1ec7t, m\u00f4 h\u00ecnh Fluke 1664 FC \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111\u00e2y v\u00ec n\u00f3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i RCD AC, A, B v\u00e0 S, cung c\u1ea5p c\u00e1c h\u1ec7 s\u1ed1 nh\u00e2n 1\/2, x1 v\u00e0 x5, c\u00f3 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra DC m\u01b0\u1ee3t m\u00e0 v\u1edbi d\u00f2ng \u0111i\u1ec7n 6, 60 v\u00e0 200 mA theo ti\u00eau chu\u1ea9n IEC 62955, v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n t\u0103ng d\u1ea7n t\u1eeb 30% \u0111\u1ebfn 110% c\u1ee7a d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c. \u0110\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb m\u00e0 c\u00e1c th\u1ee3 \u0111i\u1ec7n ph\u1ea3i mang theo.<\/p>\n<p>M\u00e1y ki\u1ec3m tra RCD. \u0110\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01a1n gi\u1ea3n h\u01a1n, th\u01b0\u1eddng c\u00f3 gi\u00e1 r\u1ebb h\u01a1n v\u00e0 do \u0111\u00f3 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n cho m\u1ecdi ng\u01b0\u1eddi. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m c\u00e1c d\u00f2ng \u0111i\u1ec7n \u0111\u00e1ng tin c\u1eady 10, 20 v\u00e0 30, 200, 300 v\u00e0 500 mA, c\u00f3 th\u1ec3 l\u1ea5y m\u1ed9t n\u1eeda \u0111\u01a1n v\u1ecb, h\u1ec7 s\u1ed1 nh\u00e2n x1 v\u00e0 x5, v\u00e0 th\u1eddi gian ng\u1eaft kho\u1ea3ng \u00b10.6%. Do \u0111\u00f3, c\u00e1c nh\u00f3m v\u1eadn h\u00e0nh th\u01b0\u1eddng xuy\u00ean s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb n\u00e0y \u01b0u ti\u00ean thi\u1ebft b\u1ecb n\u00e0y.<\/p>\n<p>H\u1ec7 th\u1ed1ng b\u00e0n th\u1eed. Kh\u00f4ng c\u1ea7m tay. \u0110\u00e2y l\u00e0 m\u1ed9t b\u1ed9 c\u1ed1 \u0111\u1ecbnh bao g\u1ed3m k\u1ebft n\u1ed1i v\u1edbi thi\u1ebft b\u1ecb, ngu\u1ed3n, thi\u1ebft b\u1ecb \u0111o th\u1eddi gian v\u00e0 b\u1ed9 ghi d\u1eef li\u1ec7u, \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh theo h\u01b0\u1edbng d\u1eabn. Lo\u1ea1i n\u00e0y ch\u1ee7 y\u1ebfu thu h\u00fat nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n<p>\u0110\u1eebng ch\u00fa \u00fd \u0111\u1ebfn th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a thi\u1ebft b\u1ecb. B\u1ea1n ph\u1ea3i ch\u00fa \u00fd \u0111\u1ebfn ba th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt: kh\u1ea3 n\u0103ng ti\u00eam d\u00f2ng DC m\u01b0\u1ee3t m\u00e0, kh\u1ea3 n\u0103ng ghi l\u1ea1i k\u1ebft qu\u1ea3 \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, v\u00e0 kh\u1ea3 n\u0103ng hi\u1ec7u chu\u1ea9n thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 truy xu\u1ea5t. H\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/benlongkj.com\/vi\/blog\/how-to-test-a-circuit-breaker\/\">th\u1eed nghi\u1ec7m b\u1ed9 ng\u1eaft m\u1ea1ch<\/a> bao g\u1ed3m ph\u1ea7n qu\u00e1 d\u00f2ng c\u1ee7a c\u00f9ng m\u1ed9t b\u00e0n th\u1eed, v\u00ec thi\u1ebft b\u1ecb r\u00f2 r\u1ec9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m tra c\u00f9ng v\u1edbi thi\u1ebft b\u1ecb qu\u00e1 d\u00f2ng thay v\u00ec ri\u00eang l\u1ebb.<\/p>\n<h2>Nh\u1eefng \u0111i\u1ec1u m\u00e0 m\u00e1y ki\u1ec3m tra c\u1ea7m tay kh\u00f4ng th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c<\/h2>\n<p>M\u1ed9t thi\u1ebft b\u1ecb ki\u1ec3m tra di \u0111\u1ed9ng ch\u1ec9 cho bi\u1ebft r\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb, trong m\u1ed9t l\u1ea7n ki\u1ec3m tra v\u00e0 d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3, \u0111\u00e3 ng\u1eaft m\u1ea1ch. M\u1eb7c d\u00f9 \u0111\u00e2y l\u00e0 th\u00f4ng tin t\u1ed1t, nh\u01b0ng c\u0169ng kh\u00e1 h\u1ea1n ch\u1ebf.<\/p>\n<p>N\u00f3 kh\u00f4ng th\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng ch\u00ednh x\u00e1c m\u1ee9c d\u00f2ng \u0111i\u1ec7n g\u00e2y ra ng\u1eaft m\u1ea1ch \u0111\u1ee7 \u0111\u1ec3 ph\u1ee5c v\u1ee5 m\u1ee5c \u0111\u00edch ph\u00ea duy\u1ec7t c\u1ee7a nh\u00e0 m\u00e1y. N\u00f3 kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n h\u00e0ng tr\u0103m l\u1ea7n v\u1eadn h\u00e0nh \u0111\u1ec3 quan s\u00e1t s\u1ef1 suy gi\u1ea3m c\u1ee7a thi\u1ebft b\u1ecb. N\u00f3 kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111i\u1ec7n m\u00f4i \u1edf \u0111i\u1ec7n \u00e1p 2000 volt v\u00ec \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ee5c \u0111\u00edch c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y, v\u00e0 \u0111i\u1ec1u \u0111\u00f3 s\u1ebd g\u00e2y h\u01b0 h\u1ea1i trong m\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t \u0111i\u1ec7n. N\u00f3 kh\u00f4ng th\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t s\u1ed1 nh\u1eadn d\u1ea1ng duy nh\u1ea5t \u0111\u00e1p \u1ee9ng k\u1ef3 v\u1ecdng c\u1ee7a ki\u1ec3m to\u00e1n vi\u00ean ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<p>B\u1ed1n h\u1ea1n ch\u1ebf n\u00e0y bi\u1ec7n minh cho s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng ki\u1ec3m tra s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ec9 ra s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c ph\u00e9p \u0111o do nh\u00e0 s\u1ea3n xu\u1ea5t th\u1ef1c hi\u1ec7n b\u1eb1ng thi\u1ebft b\u1ecb c\u1ea7m tay v\u00e0 c\u00e1c ph\u00e9p \u0111o n\u00ean \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng h\u1ec7 th\u1ed1ng \u0111o c\u1ed1 \u0111\u1ecbnh.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1988\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/10\/What-a-Production-Bench-Tests.webp\" alt=\"Nh\u1eefng g\u00ec m\u1ed9t b\u00e0n th\u1eed s\u1ea3n xu\u1ea5t ki\u1ec3m tra\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Nh\u1eefng g\u00ec m\u1ed9t b\u00e0n th\u1eed s\u1ea3n xu\u1ea5t ki\u1ec3m tra<\/h2>\n<p>B\u00e0n th\u1eed cho ph\u00e9p th\u1ef1c hi\u1ec7n chu\u1ed7i c\u00e1c b\u00e0i ki\u1ec3m tra, kh\u00f4ng ch\u1ec9 m\u1ed9t b\u00e0i ki\u1ec3m tra \u0111\u01a1n l\u1ebb.<\/p>\n<ul>\n<li>N\u00f3 \u0111o d\u00f2ng \u0111i\u1ec7n v\u00e0 th\u1eddi gian ng\u1eaft \u1edf t\u1ea5t c\u1ea3 c\u00e1c m\u1ee9c \u0111\u1ecbnh m\u1ee9c thi\u1ebft b\u1ecb, trong \u0111\u00f3 c\u00e1c b\u00e0i ki\u1ec3m tra l\u1ea1nh v\u00e0 l\u00e0m n\u00f3ng \u0111\u01b0\u1ee3c t\u00ednh \u0111\u1ebfn.<\/li>\n<li>Trong k\u1ecbch b\u1ea3n kh\u00f4ng ng\u1eaft \u1edf \u00bd I\u0394n, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec1u ki\u1ec7n ng\u1eaft th\u00f4ng qua kho\u1ea3ng th\u1eddi gian an to\u00e0n.<\/li>\n<li>G\u00f3c \u1edf tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng v\u00e0 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3, \u0111\u01b0\u1ee3c ghi l\u1ea1i trong c\u00e1c b\u1ea3n ghi.<\/li>\n<li>Tham s\u1ed1 \u0111i\u1ec7n m\u00f4i gi\u1eefa c\u00e1c \u0111i\u1ec7n c\u1ef1c v\u1edbi \u0111\u1ed9 b\u1ec1n c\u00e1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c duy tr\u00ec \u1edf m\u1ee9c \u0111i\u1ec7n \u00e1p nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li>Thi\u1ebft b\u1ecb tr\u1ea3i qua c\u00e1c b\u00e0i ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc, trong \u0111\u00f3 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn chu k\u1ef3 v\u1eadn h\u00e0nh c\u00f9ng v\u1edbi b\u00e0i ki\u1ec3m tra ng\u1eaft m\u1ea1ch.<\/li>\n<li>Thi\u1ebft b\u1ecb ph\u1ea3i ph\u00e1t hi\u1ec7n c\u00e1c lo\u1ea1i s\u00f3ng t\u1eeb kh\u00e1c nhau.<\/li>\n<\/ul>\n<p>Th\u00f4ng tin quan tr\u1ecdng v\u1ec1 m\u1eb7t th\u01b0\u01a1ng m\u1ea1i l\u00e0 b\u1ea3n ghi, bao g\u1ed3m s\u1ed1 s\u00ea-ri, ng\u00e0y th\u00e1ng, ng\u01b0\u1eddi v\u1eadn h\u00e0nh, gi\u00e1 tr\u1ecb \u0111o \u0111\u01b0\u1ee3c, c\u0169ng nh\u01b0 \u201c\u0111\u1ea1t\u201d ho\u1eb7c \u201ckh\u00f4ng \u0111\u1ea1t.\u201d Th\u00f4ng tin n\u00e0y gi\u00fap l\u00f4 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c, v\u00e0 \u0111i\u1ec1u \u0111\u1ea7u ti\u00ean kh\u00e1ch h\u00e0ng t\u00ecm ki\u1ebfm khi thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng l\u00e0 b\u1ea3n ghi \u0111\u00f3.<\/p>\n<p>Ph\u1ea7n th\u1ee9 hai c\u1ee7a c\u00f4ng vi\u1ec7c n\u1eb1m \u1edf vi\u1ec7c hi\u1ec7u chu\u1ea9n \u0111i\u1ec3m ng\u1eaft c\u1ee7a thi\u1ebft b\u1ecb, m\u1ed9t c\u00f4ng vi\u1ec7c ho\u00e0n to\u00e0n kh\u00e1c \u0111\u00f2i h\u1ecfi kh\u00f4ng ch\u1ec9 nh\u1eadn bi\u1ebft k\u1ebft qu\u1ea3 ki\u1ec3m tra m\u00e0 c\u00f2n ph\u1ea3i hi\u1ec7u chu\u1ea9n \u0111\u1ec3 l\u00e0m vi\u1ec7c trong v\u00f9ng gi\u1eefa c\u1ee7a ph\u1ea1m vi hi\u1ec7u qu\u1ea3. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng tr\u00ean thi\u1ebft b\u1ecb qu\u00e1 d\u00f2ng \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong b\u00e0i vi\u1ebft n\u00e0y v\u1ec1 <a href=\"https:\/\/benlongkj.com\/vi\/blog\/mcb-calibration-machine-and-how-it-works\/\">M\u00e1y hi\u1ec7u chu\u1ea9n MCB<\/a>, v\u00e0 c\u00f9ng m\u1ed9t logic \u00e1p d\u1ee5ng cho ph\u1ea7n t\u1eed d\u01b0.<\/p>\n<h2>D\u00f2ng s\u1ea3n ph\u1ea9m Benlong Bench<\/h2>\n<p>Ch\u00fang t\u00f4i kh\u00f4ng ch\u1ebf t\u1ea1o d\u1ee5ng c\u1ee5 \u0111o l\u01b0\u1eddng, m\u00e0 l\u00e0 thi\u1ebft b\u1ecb ki\u1ec3m tra. H\u1ec7 th\u1ed1ng c\u1ee7a ch\u00fang t\u00f4i c\u00f3 t\u00ednh m\u00f4-\u0111un, ngh\u0129a l\u00e0 ch\u00fang t\u00f4i c\u00f3 m\u1ed9t n\u1ec1n t\u1ea3ng ti\u00eau chu\u1ea9n cho thi\u1ebft b\u1ecb nh\u01b0 gi\u00e1 \u0111\u1ee1, ngu\u1ed3n \u0111i\u1ec7n \u0111i\u1ec1u khi\u1ec3n v\u00e0 h\u1ec7 th\u1ed1ng d\u1eef li\u1ec7u, trong khi ch\u1ec9 ph\u1ea7n \u0111o l\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u1ea7u dao, <a href=\"https:\/\/benlongkj.com\/vi\/acb-test-bench-product\/\">B\u00e0n ki\u1ec3m tra to\u00e0n di\u1ec7n ACB<\/a> bao g\u1ed3m c\u00e1c ph\u00e9p \u0111o th\u1eddi gian, \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m v\u00e0 h\u00e0nh tr\u00ecnh m\u00e0 m\u1ed9t c\u1ea7u dao kh\u00f4ng kh\u00ed c\u1ea7n. B\u00e0n ki\u1ec3m tra ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 v\u00e0 t\u00edn hi\u1ec7u th\u1ef1c hi\u1ec7n c\u00e1c ch\u1ee9c n\u0103ng \u1edf ph\u00eda t\u00edn hi\u1ec7u nh\u1ecf c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 \u1edf tr\u00ean. B\u00e0n ki\u1ec3m tra l\u00e3o h\u00f3a ATS ho\u1ea1t \u0111\u1ed9ng tr\u00ean nhi\u1ec1u c\u00f4ng t\u1eafc chuy\u1ec3n m\u1ea1ch \u0111ang v\u1eadn h\u00e0nh cho \u0111\u1ebfn khi x\u1ea3y ra s\u1ef1 c\u1ed1 ho\u1eb7c \u0111\u1ea1t \u0111\u1ebfn s\u1ed1 \u0111i\u1ec3m x\u00e1c \u0111\u1ecbnh.<\/p>\n<p>Khi li\u00ean quan \u0111\u1ebfn thi\u1ebft b\u1ecb d\u01b0, quy tr\u00ecnh ki\u1ec3m tra bao g\u1ed3m vi\u1ec7c ti\u00eam d\u00f2ng d\u01b0, v\u00e0 c\u00e1c b\u00e0i ki\u1ec3m tra \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean c\u0169ng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o chu tr\u00ecnh. V\u1ea5n \u0111\u1ec1 \u1edf \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 b\u00e0n ki\u1ec3m tra c\u00f3 th\u1ec3 ti\u00eam 30 mA hay kh\u00f4ng, m\u00e0 l\u00e0 li\u1ec7u n\u00f3 c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng dung sai hi\u1ec7u chu\u1ea9n \u0111\u00e3 \u0111\u1eb7t cho t\u1ea5t c\u1ea3 c\u00e1c g\u00f3c v\u00e0 \u0111\u1ecbnh m\u1ee9c v\u00e0 l\u01b0u l\u1ea1i k\u1ebft qu\u1ea3 \u0111o theo s\u1ed1 s\u00ea-ri m\u00e0 kh\u00f4ng c\u1ea7n ng\u01b0\u1eddi v\u1eadn h\u00e0nh nh\u1eadp th\u1ee7 c\u00f4ng hay kh\u00f4ng.<\/p>\n<p>\u0110i\u1ec1u ch\u00fang t\u00f4i kh\u00f4ng l\u00e0m l\u00e0 b\u00e1n b\u00e0n ki\u1ec3m tra nh\u01b0 m\u1ed9t h\u1ed9p \u0111en. Qu\u00e1 tr\u00ecnh ki\u1ec3m tra \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh ph\u1ed1i h\u1ee3p v\u1edbi k\u1ef9 s\u01b0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a kh\u00e1ch h\u00e0ng; d\u00f9 b\u00e0n ki\u1ec3m tra c\u00f3 t\u1ed1t \u0111\u1ebfn \u0111\u00e2u, n\u00f3 ch\u1ec9 t\u1ed1t b\u1eb1ng quy tr\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 ra. Trong th\u1ef1c t\u1ebf, h\u1ea7u h\u1ebft c\u00e1c d\u1ef1 \u00e1n b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t ph\u00e9p \u0111o m\u00e0 b\u00e0n ki\u1ec3m tra ph\u1ea3i \u0111\u1ea1t \u0111\u01b0\u1ee3c; ph\u00e9p \u0111o n\u00e0y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 thi\u1ebft k\u1ebf.<\/p>\n<h2>Nh\u1eefng \u0111i\u1ec1u c\u1ea7n ch\u1ec9 \u0111\u1ecbnh khi mua<\/h2>\n<p>N\u0103m y\u1ebfu t\u1ed1 x\u00e1c \u0111\u1ecbnh c\u00e1ch m\u1ed9t b\u00e0n ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3.<\/p>\n<ul>\n<li>N\u0103ng su\u1ea5t c\u1ea7n thi\u1ebft. S\u1ed1 l\u01b0\u1ee3ng \u0111\u01a1n v\u1ecb c\u1ea7n x\u1eed l\u00fd ho\u00e0n ch\u1ec9nh m\u1ed7i gi\u1edd \u2014 ph\u00e9p \u0111o hi\u1ec7u qu\u1ea3 kh\u00f4ng ph\u1ea3i l\u00e0 th\u1eddi gian ho\u00e0n th\u00e0nh m\u1ed9t b\u00e0i ki\u1ec3m tra \u0111\u01a1n l\u1ebb.<\/li>\n<li>Ph\u1ea1m vi \u0111o. Ph\u1ea1m vi thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ki\u1ec3m tra t\u1eeb m\u1ee9c th\u1ea5p nh\u1ea5t \u0111\u1ebfn cao nh\u1ea5t, v\u00ec m\u1ed9t b\u00e0n ki\u1ec3m tra bao ph\u1ee7 ph\u1ea1m vi t\u1eeb 25 A \u0111\u1ebfn 100 A c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a b\u00e0i ki\u1ec3m tra thi\u1ebft b\u1ecb s\u00e1u ampe.<\/li>\n<li>Quy tr\u00ecnh hi\u1ec7u chu\u1ea9n. M\u1ee9c \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn m\u00e0 qu\u00e1 tr\u00ecnh \u0111o l\u01b0\u1eddng s\u1ebd ho\u1ea1t \u0111\u1ed9ng v\u00e0 t\u1ea7n su\u1ea5t hi\u1ec7u chu\u1ea9n c\u00e1c thi\u1ebft b\u1ecb.<\/li>\n<li>K\u1ebft qu\u1ea3 d\u1eef li\u1ec7u. C\u00e1ch ghi s\u1ed1 s\u00ea-ri, li\u1ec7u c\u00f3 ch\u1ee9c n\u0103ng \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t hay kh\u00f4ng, v\u00e0 c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 truy\u1ec1n t\u1ea3i.<\/li>\n<li>Th\u1eddi gian chuy\u1ec3n \u0111\u1ed5i. M\u1ea5t bao nhi\u00eau ph\u00fat \u0111\u1ec3 chuy\u1ec3n t\u1eeb m\u1ee9c n\u00e0y sang m\u1ee9c kh\u00e1c, \u0111i\u1ec1u n\u00e0y s\u1ebd quy\u1ebft \u0111\u1ecbnh li\u1ec7u m\u1ed9t b\u00e0n th\u1eed c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng d\u01b0\u1edbi \u00e1p l\u1ef1c s\u1ea3n xu\u1ea5t hay kh\u00f4ng.<\/li>\n<\/ul>\n<p>\u0110i\u1ec3m th\u1ee9 n\u0103m th\u01b0\u1eddng l\u00e0 \u0111i\u1ec3m gi\u1ebft ch\u1ebft c\u00e1c d\u1ef1 \u00e1n. N\u1ebfu m\u1ea5t b\u1ed1n m\u01b0\u01a1i ph\u00fat \u0111\u1ec3 c\u1ea5u h\u00ecnh l\u1ea1i b\u00e0n th\u1eed cho m\u1ed9t m\u1ee9c kh\u00e1c, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ed9t \u0111\u00e1nh gi\u00e1 th\u00e0nh c\u00f4ng v\u00e0 kh\u00f4ng bao gi\u1edd ho\u1ea1t \u0111\u1ed9ng l\u1ea1i sau \u0111\u00f3, \u0111\u1ec3 l\u1ea1i m\u1ed9t kho\u1ea3ng tr\u1ed1ng trong h\u1ed3 s\u01a1 m\u00e0 kh\u00f4ng ai nh\u1eadn ra cho \u0111\u1ebfn khi ki\u1ec3m to\u00e1n di\u1ec5n ra.<\/p>\n<p>\u0110i\u1ec3m cu\u1ed1i c\u00f9ng l\u00e0 c\u00f4ng vi\u1ec7c t\u00edn hi\u1ec7u nh\u1ecf y\u00eau c\u1ea7u m\u1ed9t d\u00f2ng ri\u00eang trong \u0111\u1eb7c t\u1ea3 v\u00ec thi\u1ebft b\u1ecb d\u01b0 c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 thay v\u00ec t\u1ea3i. M\u1ed9t b\u00e0n th\u1eed \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng cho \u0111i\u1ec1u \u0111\u00f3, nh\u01b0 b\u00e0n th\u1eed n\u00e0y <a href=\"https:\/\/benlongkj.com\/vi\/auxiliary-and-signal-contact-test-bench-product\/\">b\u00e0n th\u1eed ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 v\u00e0 t\u00edn hi\u1ec7u<\/a>, \u0111o ti\u1ebfp \u0111i\u1ec3m, kh\u00f4ng ph\u1ea3i c\u01a1 ch\u1ebf, v\u00e0 hai c\u00e1i n\u00e0y hi\u1ebfm khi \u0111\u01b0\u1ee3c th\u1eed theo c\u00f9ng m\u1ed9t quy tr\u00ecnh.<\/p>\n<h2>N\u0103m sai l\u1ea7m trong ki\u1ec3m tra RCCB<\/h2>\n<ul>\n<li>Ki\u1ec3m tra \u1edf m\u1ed9t g\u00f3c pha duy nh\u1ea5t. 50% c\u1ee7a c\u00e1c l\u1ed7i trong m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf k\u00e9m ch\u1ec9 bi\u1ec3u hi\u1ec7n \u1edf g\u00f3c 180 \u0111\u1ed9.<\/li>\n<li>Ch\u1ec9 ki\u1ec3m tra \u1edf I\u0394n. M\u1ed9t thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ng\u1eaft \u1edf \u0111\u1ecbnh m\u1ee9c thi\u1ebft k\u1ebf v\u00e0 kh\u00f4ng v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra ng\u1eaft nhanh 5 I\u0394n, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng trong c\u00e1c t\u00ecnh hu\u1ed1ng s\u1ed1c \u0111i\u1ec7n.<\/li>\n<li>S\u1eed d\u1ee5ng ki\u1ec3m tra AC tr\u00ean thi\u1ebft b\u1ecb lo\u1ea1i B. C\u1ea3m bi\u1ebfn AC c\u1ee7a thi\u1ebft b\u1ecb s\u1ebd ng\u1eaft thi\u1ebft b\u1ecb \u0111o v\u00e0 b\u00e1o \u0111\u00e3 ho\u00e0n th\u00e0nh ki\u1ec3m tra trong khi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u c\u1ee7a thi\u1ebft b\u1ecb ch\u01b0a bao gi\u1edd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<li>B\u1ecf qua b\u00e0i ki\u1ec3m tra kh\u00f4ng ng\u1eaft. M\u1ed9t thi\u1ebft b\u1ecb v\u01b0\u1ee3t qua ng\u1eaft 15 mA s\u1ebd v\u01b0\u1ee3t qua c\u00e1c b\u00e0i ki\u1ec3m tra ng\u1eaft c\u00f2n l\u1ea1i v\u00e0 ng\u1eaft kh\u00f4ng mong mu\u1ed1n \u1edf m\u1ed7i l\u1ea7n kh\u1edfi \u0111\u1ed9ng.<\/li>\n<li>Kh\u00f4ng ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n. M\u1ed9t l\u1ea7n ng\u1eaft cho th\u1ea5y thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng h\u00f4m nay. N\u0103m tr\u0103m l\u1ea7n v\u1eadn h\u00e0nh ch\u1ee9ng minh c\u01a1 ch\u1ebf v\u1eabn ho\u1ea1t \u0111\u1ed9ng \u1edf n\u0103m th\u1ee9 m\u01b0\u1eddi, \u0111\u00f3 l\u00e0 l\u00fd do <a href=\"https:\/\/benlongkj.com\/vi\/ats-aging-test-bench-product\/\">b\u00e0n th\u1eed l\u00e3o h\u00f3a<\/a> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<\/ul>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>M\u00e1y ki\u1ec3m tra RCCB ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>N\u00f3 t\u1ea1o k\u1ebft n\u1ed1i gi\u1eefa ngu\u1ed3n v\u00e0 t\u1ea3i, cho ph\u00e9p m\u1ed9t l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n c\u1ee5 th\u1ec3 ch\u1ea3y qua b\u1ed9 c\u1ea3m bi\u1ebfn c\u1ee7a thi\u1ebft b\u1ecb, qua d\u00e2y d\u1eabn v\u00e0 tr\u1edf v\u1ec1 \u0111\u1ea5t thay v\u00ec qua d\u00e2y trung t\u00ednh. Thi\u1ebft b\u1ecb ph\u00e1t hi\u1ec7n s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng, ng\u1eaft v\u00e0 \u0111o th\u1eddi gian gi\u1eefa l\u00fac b\u1eadt v\u00e0 l\u00fac ng\u1eaft.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ki\u1ec3m tra RCCB?<\/h3>\n<p>\u0110\u1ea7u ti\u00ean nh\u1ea5n n\u00fat ki\u1ec3m tra c\u1ee7a thi\u1ebft b\u1ecb, x\u00e1c nh\u1eadn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb. B\u00e2y gi\u1edd, s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u1edf \u00bd I\u0394n, I\u0394n v\u00e0 5 I\u0394n \u1edf m\u1ed9t g\u00f3c pha. Ghi ch\u00fa th\u1eddi gian. B\u00e0i ki\u1ec3m tra t\u0103ng d\u1ea7n cho th\u1ea5y d\u00f2ng \u0111i\u1ec7n ng\u1eaft th\u1ef1c t\u1ebf c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 th\u1ef1c hi\u1ec7n ki\u1ec3m tra RCCB?<\/h3>\n<p>N\u1ebfu qu\u00e1 tr\u00ecnh ki\u1ec3m tra y\u00eau c\u1ea7u c\u00e1ch ly m\u1ea1ch, ng\u1eaft m\u1ea1ch kh\u1ecfi ngu\u1ed3n \u0111i\u1ec7n, k\u1ebft n\u1ed1i m\u00e1y ki\u1ec3m tra ph\u00eda sau thi\u1ebft b\u1ecb m\u1eabu, ch\u1ecdn \u0111\u1ecbnh m\u1ee9c d\u00f2ng d\u01b0 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh v\u00e0 s\u1eed d\u1ee5ng h\u1ec7 s\u1ed1 nh\u00e2n. Sau \u0111\u00f3 th\u1ef1c hi\u1ec7n ki\u1ec3m tra cho m\u1ed7i g\u00f3c pha, \u0111\u1eb7t l\u1ea1i thi\u1ebft b\u1ecb sau m\u1ed7i l\u1ea7n ng\u1eaft. \u0110\u1eebng qu\u00ean ghi ch\u00fa t\u1ea5t c\u1ea3 k\u1ebft qu\u1ea3 v\u00ec \u0111\u1ea1t m\u00e0 kh\u00f4ng c\u00f3 h\u1ed3 s\u01a1 kh\u00f4ng c\u00f3 \u00fd ngh\u0129a g\u00ec.<\/p>\n<h3>T\u00ean c\u1ee7a \u0111\u1ed3ng h\u1ed3 ki\u1ec3m tra RCCB l\u00e0 g\u00ec?<\/h3>\n<p>N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00e1y ki\u1ec3m tra RCD, m\u00e1y ki\u1ec3m tra thi\u1ebft b\u1ecb d\u00f2ng r\u00f2, ho\u1eb7c m\u00e1y ki\u1ec3m tra RCCB\/ELCB. N\u1ebfu c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb c\u0169ng \u0111o tr\u1edf kh\u00e1ng v\u00f2ng l\u1eb7p v\u00e0 \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c ti\u1ebfp th\u1ecb nh\u01b0 m\u1ed9t m\u00e1y ki\u1ec3m tra l\u1eafp \u0111\u1eb7t ho\u1eb7c m\u00e1y ki\u1ec3m tra \u0111a ch\u1ee9c n\u0103ng.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.fluke.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Fluke \u2014 M\u00e1y ki\u1ec3m tra l\u1eafp \u0111\u1eb7t v\u00e0 ki\u1ec3m tra RCD lo\u1ea1i B<\/a><\/li>\n<li><a href=\"https:\/\/www.metrel.si\/\" rel=\"nofollow noopener\" target=\"_blank\">Metrel \u2014 Thi\u1ebft b\u1ecb ki\u1ec3m tra RCD v\u00e0 l\u1eafp \u0111\u1eb7t<\/a><\/li>\n<li><a href=\"https:\/\/www.beama.org.uk\/\" rel=\"nofollow noopener\" target=\"_blank\">BEAMA \u2014 C\u00e1c lo\u1ea1i RCD, ki\u1ec3m tra v\u00e0 \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"https:\/\/www.ul.com\/\" rel=\"nofollow noopener\" target=\"_blank\">UL Solutions \u2014 Thi\u1ebft b\u1ecb d\u00f2ng r\u00f2 v\u00e0 ch\u1ee9ng nh\u1eadn<\/a><\/li>\n<li><a href=\"https:\/\/www.siemens.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Siemens \u2014 Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 d\u00f2ng r\u00f2 v\u00e0 y\u00eau c\u1ea7u ki\u1ec3m tra<\/a><\/li>\n<\/ul>\n<h2>Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n<p>M\u00e1y ki\u1ec3m tra RCCB t\u1ea1o ra s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng v\u00e0 \u0111o th\u1eddi gian \u0111\u1ec3 k\u00edch ho\u1ea1t thi\u1ebft b\u1ecb. M\u1ed9t m\u00e1y ki\u1ec3m tra t\u1ed1t s\u1ebd th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y \u1edf m\u1ecdi pha v\u00e0 \u1edf m\u1ecdi \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong ti\u00eau chu\u1ea9n. N\u00f3 c\u0169ng s\u1ebd \u0111o tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1ee7 c\u0169 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c k\u1ebft qu\u1ea3 v\u1eabn tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n v\u00e0o n\u0103m t\u1edbi.<\/p>\n<p>Cung c\u1ea5p cho ki\u1ec3m to\u00e1n vi\u00ean c\u1ee7a b\u1ea1n ph\u1ea1m vi thi\u1ebft b\u1ecb, s\u1ea3n l\u01b0\u1ee3ng v\u00e0 c\u00e1c h\u1ed3 s\u01a1 c\u1ea7n thi\u1ebft \u0111\u1ec3 nh\u1eadn b\u00e1o gi\u00e1 c\u1ee7a b\u1ea1n.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>A residual current device is created for only one purpose, which doesn\u2019t really show the signs of malfunctioning. The appearance of the device doesn\u2019t change, and there\u2019s no sign of something being wrong, which indicates that it is on the mark when it comes to performing its primary function. This is the work of an [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1987,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1985","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\/1985","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=1985"}],"version-history":[{"count":3,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1985\/revisions"}],"predecessor-version":[{"id":1990,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1985\/revisions\/1990"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media\/1987"}],"wp:attachment":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media?parent=1985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/categories?post=1985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/tags?post=1985"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}