{"id":789,"date":"2026-09-08T04:14:10","date_gmt":"2026-09-08T04:14:10","guid":{"rendered":"https:\/\/ritoks.com\/?p=789"},"modified":"2026-10-11T00:44:30","modified_gmt":"2026-10-11T00:44:30","slug":"current-transformer-selection-guide","status":"publish","type":"post","link":"https:\/\/ritoks.com\/vi\/current-transformer-selection-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn bi\u1ebfn d\u00f2ng \u0111i\u1ec7n: C\u1ea5u t\u1ea1o, t\u1ef7 s\u1ed1 bi\u1ebfn \u0111\u1ed5i, \u0111\u1ea7u ra v\u00e0 ki\u1ec3m tra m\u1eabu"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00e1y bi\u1ebfn d\u00f2ng \u0111i\u1ec7n c\u1ea7n b\u1eaft \u0111\u1ea7u t\u1eeb y\u00eau c\u1ea7u \u0111o l\u01b0\u1eddng, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o m\u00e3 s\u1ea3n ph\u1ea9m. Ng\u01b0\u1eddi mua n\u00ean x\u00e1c \u0111\u1ecbnh r\u00f5 c\u1ea5u t\u1ea1o v\u1eadt l\u00fd, y\u00eau c\u1ea7u v\u1ec1 d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p, \u0111\u1ea7u ra th\u1ee9 c\u1ea5p, t\u1ef7 s\u1ed1 bi\u1ebfn \u00e1p, kh\u1ea3 n\u0103ng l\u1eafp \u0111\u1eb7t, y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c, t\u1ea3i tr\u1ecdng (n\u1ebfu c\u00f3), t\u1ea7n s\u1ed1, y\u00eau c\u1ea7u v\u1ec1 c\u00e1ch \u0111i\u1ec7n v\u00e0 c\u00e1c t\u00e0i li\u1ec7u c\u1ee5 th\u1ec3 c\u1ea7n thi\u1ebft tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn bi\u1ebfn \u00e1p d\u00f2ng \u0111i\u1ec7n n\u00e0y ph\u00e2n bi\u1ec7t c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra chung v\u1edbi d\u1eef li\u1ec7u s\u1ea3n ph\u1ea9m RITOKS \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00f4ng t\u00ednh to\u00e1n t\u1ef7 s\u1ed1, t\u1ea3i tr\u1ecdng ho\u1eb7c th\u00f4ng s\u1ed1 b\u1ea3o v\u1ec7, v\u00e0 kh\u00f4ng thay th\u1ebf cho t\u01b0 v\u1ea5n k\u1ef9 thu\u1eadt \u1ee9ng d\u1ee5ng hay t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn d\u00e0nh cho t\u1eebng m\u1eabu s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<figure data-spectra-id=\"spectra-b294a684-5ecc-4b0b-80e2-e61c4a7b1322\" class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" height=\"2048\" width=\"2048\" src=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1.png\" alt=\"Bi\u1ebfn d\u00f2ng \u0111i\u1ec7n l\u00f5i t\u00e1ch d\u00f2ng DP series d\u00f9ng \u0111\u1ec3 gi\u00e1m s\u00e1t \u0111i\u1ec7n n\u0103ng c\u00f4ng nghi\u1ec7p\" class=\"wp-image-413\" srcset=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1.png 2048w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-300x300.png 300w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-100x100.png 100w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-600x600.png 600w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1024x1024.png 1024w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-150x150.png 150w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-768x768.png 768w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1536x1536.png 1536w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><figcaption class=\"wp-element-caption\">Representative DP Series split-core current transformer. Published output, burden, frequency, insulation and mechanical details must be confirmed for the exact model.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ed5ng quan v\u1ec1 vi\u1ec7c l\u1ef1a ch\u1ecdn bi\u1ebfn d\u00f2ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t b\u1ea3n \u0111\u1eb7c t\u1ea3 h\u1eefu \u00edch b\u1eaft \u0111\u1ea7u t\u1eeb y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng, chuy\u1ec3n sang c\u1ea5u tr\u00fac CT v\u00e0 giao di\u1ec7n \u0111i\u1ec7n, sau \u0111\u00f3 k\u1ebft th\u00fac b\u1eb1ng vi\u1ec7c m\u00f4 t\u1ea3 s\u1ef1 ph\u00f9 h\u1ee3p v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u00e0 t\u00e0i li\u1ec7u m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c. C\u00e1c thu\u1eadt ng\u1eef chung \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch trong t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt ch\u00ednh th\u1ee9c t\u1eeb <a href=\"https:\/\/www.se.com\/us\/en\/faqs\/FA335683\/\" target=\"_blank\" rel=\"noopener\">Schneider Electric<\/a>, c\u1ee7a n\u00f3 <a href=\"https:\/\/www.se.com\/us\/en\/download\/document\/Z207506\/\" target=\"_blank\" rel=\"noopener\">T\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t m\u00e1y \u0111o d\u00f2ng \u0111i\u1ec7n (CT) l\u00f5i t\u00e1ch<\/a>, v\u00e0 <a href=\"https:\/\/emea.socomec.com\/sites\/default\/files\/2024-11\/CURRENT-SENSORS-AND-TRANSFORMERS_SELECTION-GUIDE_2024-11_DCG0160201EN_EN_0.pdf\" target=\"_blank\" rel=\"noopener\">H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn c\u1ea3m bi\u1ebfn d\u00f2ng \u0111i\u1ec7n v\u00e0 m\u00e1y bi\u1ebfn d\u00f2ng c\u1ee7a Socomec<\/a>. C\u00e1c ngu\u1ed3n n\u00e0y ch\u1ec9 cung c\u1ea5p th\u00f4ng tin tham kh\u1ea3o chung; c\u00e1c \u0111\u00e1nh gi\u00e1 v\u00e0 khuy\u1ebfn ngh\u1ecb c\u1ee7a ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a s\u1ea3n ph\u1ea9m RITOKS.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ea7u v\u00e0o \u0111\u1ec3 l\u1ef1a ch\u1ecdn bi\u1ebfn d\u00f2ng<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>D\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o \u0111\u1ec3 l\u1ef1a ch\u1ecdn<\/th><th>Nh\u1eefng \u0111i\u1ec1u c\u1ea7n x\u00e1c nh\u1eadn<\/th><\/tr><\/thead><tbody>\n<tr><td>X\u00e2y d\u1ef1ng CT<\/td><td>C\u1ea5u tr\u00fac l\u00f5i t\u00e1ch, l\u00f5i k\u00edn ho\u1eb7c c\u1ea5u tr\u00fac thu nh\u1ecf theo y\u00eau c\u1ea7u c\u1ee7a c\u00f4ng tr\u00ecnh l\u1eafp \u0111\u1eb7t<\/td><\/tr>\n<tr><td>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<\/td><td>D\u1ea3i d\u00f2ng \u0111i\u1ec7n c\u1ee7a d\u1ef1 \u00e1n v\u00e0 th\u00f4ng s\u1ed1 d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p \u0111\u00e3 c\u00f4ng b\u1ed1 cho m\u1eabu c\u1ee5 th\u1ec3 n\u00e0y<\/td><\/tr>\n<tr><td>\u0110\u1ea7u ra th\u1ee9 c\u1ea5p<\/td><td>Th\u00f4ng tin \u0111\u1ea7u v\u00e0o b\u1eaft bu\u1ed9c cho \u0111\u1ed3ng h\u1ed3 \u0111o ho\u1eb7c thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i<\/td><\/tr>\n<tr><td>T\u1ef7 l\u1ec7<\/td><td>M\u1ed1i quan h\u1ec7 t\u1eeb c\u1ea5p ti\u1ec3u h\u1ecdc \u0111\u1ebfn c\u1ea5p trung h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c<\/td><\/tr>\n<tr><td>S\u1ef1 kh\u1edbp gi\u1eefa d\u00e2y d\u1eabn v\u00e0 khe h\u1edf<\/td><td>K\u00edch th\u01b0\u1edbc thanh d\u1eabn ho\u1eb7c thanh c\u00e1i so v\u1edbi k\u00edch th\u01b0\u1edbc l\u1ed7 m\u1edf \u0111\u00e3 c\u00f4ng b\u1ed1<\/td><\/tr>\n<tr><td>Quy\u1ec1n truy c\u1eadp c\u00e0i \u0111\u1eb7t<\/td><td>D\u00e2y d\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00e1o ra hay ph\u1ea3i gi\u1eef nguy\u00ean v\u1ecb tr\u00ed<\/td><\/tr>\n<tr><td>L\u1eafp \u0111\u1eb7t<\/td><td>Kho\u1ea3ng tr\u1ed1ng, ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 d\u00e2y d\u1eabn<\/td><\/tr>\n<tr><td>T\u1ea7n s\u1ed1<\/td><td>T\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng y\u00eau c\u1ea7u v\u00e0 vi\u1ec7c c\u00f4ng b\u1ed1 m\u1eabu s\u1ea3n ph\u1ea9m ch\u00ednh x\u00e1c<\/td><\/tr>\n<tr><td>Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c<\/td><td>C\u00e1c thu\u1eadt ng\u1eef b\u1eaft bu\u1ed9c v\u00e0 t\u00ean ch\u00ednh x\u00e1c c\u1ee7a l\u1edbp ho\u1eb7c l\u0129nh v\u1ef1c hi\u1ec7u su\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1<\/td><\/tr>\n<tr><td>G\u00e1nh n\u1eb7ng<\/td><td>Y\u00eau c\u1ea7u c\u1ee7a VA c\u00f3 li\u00ean quan v\u00e0 d\u00f2ng c\u1ee5 th\u1ec3 n\u01a1i y\u00eau c\u1ea7u \u0111\u00f3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1<\/td><\/tr>\n<tr><td>C\u00e1ch nhi\u1ec7t \/ ch\u1ecbu \u0111\u01b0\u1ee3c<\/td><td>Y\u00eau c\u1ea7u d\u1ef1 \u00e1n v\u00e0 t\u00e0i li\u1ec7u m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c<\/td><\/tr>\n<tr><td>M\u00f4 h\u00ecnh ch\u00ednh x\u00e1c<\/td><td>C\u1ea5u h\u00ecnh \u0111\u1ea7y \u0111\u1ee7 bao g\u1ed3m h\u1eadu t\u1ed1, bi\u1ebfn th\u1ec3 v\u00e0 th\u1ee9 t\u1ef1 s\u1eafp x\u1ebfp<\/td><\/tr>\n<tr><td>B\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \/ t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn<\/td><td>C\u00e1c t\u00e0i li\u1ec7u b\u1eaft bu\u1ed9c v\u1ec1 \u0111i\u1ec7n, c\u01a1 kh\u00ed v\u00e0 tu\u00e2n th\u1ee7<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">1. B\u1eaft \u0111\u1ea7u v\u1edbi c\u1ea5u tr\u00fac CT<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Bi\u1ebfn d\u00f2ng l\u00f5i t\u00e1ch \u0111\u00f4i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t CT l\u00f5i t\u00e1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf ra \u0111\u1ec3 l\u1eafp \u0111\u1eb7t xung quanh m\u1ed9t d\u00e2y d\u1eabn ho\u1eb7c thanh c\u00e1i hi\u1ec7n c\u00f3. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 quan tr\u1ecdng trong tr\u01b0\u1eddng h\u1ee3p vi\u1ec7c ng\u1eaft k\u1ebft n\u1ed1i d\u00e2y d\u1eabn l\u00e0 kh\u00f4ng kh\u1ea3 thi, nh\u01b0ng b\u1ea3n th\u00e2n c\u1ea5u t\u1ea1o c\u1ee7a thi\u1ebft b\u1ecb kh\u00f4ng quy\u1ebft \u0111\u1ecbnh t\u1ef7 s\u1ed1, c\u00f4ng su\u1ea5t \u0111\u1ea7u ra, \u0111\u1ed9 ch\u00ednh x\u00e1c hay t\u1ea3i tr\u1ecdng c\u1ea7n thi\u1ebft. Thi\u1ebft b\u1ecb n\u00e0y <a href=\"https:\/\/ritoks.com\/vi\/products\/dp-series-split-core-current-transformer\/\">Bi\u1ebfn d\u00f2ng l\u00f5i t\u00e1ch d\u00f2ng DP Series<\/a> cung c\u1ea5p m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 c\u1ea5u t\u1ea1o RITOKS d\u1ef1a tr\u00ean ch\u00edn t\u00e0i li\u1ec7u tham kh\u1ea3o m\u00f4 h\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1. C\u1ea5u h\u00ecnh \u0111\u1ea7u ra th\u1ee9 c\u1ea5p \u0111\u1ea7y \u0111\u1ee7, t\u1ea3i tr\u1ecdng, t\u1ea7n s\u1ed1, l\u1edbp c\u00e1ch nhi\u1ec7t, kh\u1ea9u \u0111\u1ed9 v\u00e0 c\u00e1c k\u00edch th\u01b0\u1edbc chi ti\u1ebft c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y ch\u01b0a \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 v\u00e0 c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e1y bi\u1ebfn d\u00f2ng l\u00f5i k\u00edn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t CT l\u00f5i k\u00edn y\u00eau c\u1ea7u d\u00e2y d\u1eabn ph\u1ea3i \u0111i qua l\u1ed7 m\u1edf c\u1ee7a n\u00f3 trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t. Do \u0111\u00f3, ng\u01b0\u1eddi mua n\u00ean ki\u1ec3m tra \u0111i\u1ec1u ki\u1ec7n ti\u1ebfp c\u1eadn \u0111\u1ec3 l\u1eafp \u0111\u1eb7t c\u0169ng nh\u01b0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n. C\u00e1c <a href=\"https:\/\/ritoks.com\/vi\/products\/bh-0-66-60i-current-transformer-200-5a-1500-5a\/\">BH-0.66 60I \u2013 Bi\u1ebfn d\u00f2ng \u0111i\u1ec7n \u00e1p th\u1ea5p<\/a> l\u00e0 m\u1ed9t h\u1ecd s\u1ed1 c\u00f3 l\u00f5i \u0111\u00f3ng, g\u1ed3m m\u1ed9t l\u00f5i, v\u1edbi m\u01b0\u1eddi m\u1ed9t h\u00e0ng t\u1ef7 l\u1ec7 \/5A \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1. T\u1ef7 l\u1ec7 ch\u00ednh x\u00e1c, l\u1edbp \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 c\u00e1c m\u1ee5c t\u1ea3i tr\u1ecdng c\u1ee7a n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t c\u00f9ng nhau ch\u1ee9 kh\u00f4ng n\u00ean k\u1ebft h\u1ee3p l\u1ea1i m\u1ed9t c\u00e1ch t\u00f9y ti\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Bi\u1ebfn d\u00f2ng thu nh\u1ecf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thu\u1eadt ng\u1eef \u201cminiature\u201d d\u00f9ng \u0111\u1ec3 ch\u1ec9 thi\u1ebft k\u1ebf v\u1eadt l\u00fd nh\u1ecf g\u1ecdn; \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 tuy\u00ean b\u1ed1 v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u01b0\u1ee3t tr\u1ed9i hay t\u00ednh ph\u00f9 h\u1ee3p ph\u1ed5 qu\u00e1t. C\u00e1c <a href=\"https:\/\/ritoks.com\/vi\/products\/gta20l-precision-current-transformer-10a-100a\/\">Bi\u1ebfn d\u00f2ng \u0111i\u1ec7n thu nh\u1ecf ch\u00ednh x\u00e1c GTA20L<\/a> c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i 26 mm, chi\u1ec1u cao 28,4 mm, \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 8,5 mm v\u00e0 chi\u1ec1u d\u00e0i ch\u00e2n 200 mm. C\u00e1c k\u00edch th\u01b0\u1edbc n\u00e0y gi\u00fap ki\u1ec3m tra \u0111\u1ed9 kh\u1edbp, trong khi c\u00e1c tr\u01b0\u1eddng \u0111i\u1ec7n c\u1ee7a n\u00f3 v\u1eabn ph\u1ea3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cho ph\u00f9 h\u1ee3p ch\u00ednh x\u00e1c v\u1edbi m\u00f4 h\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. X\u00e1c \u0111\u1ecbnh y\u00eau c\u1ea7u v\u1ec1 d\u00f2ng \u0111i\u1ec7n ch\u00ednh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">X\u00e1c \u0111\u1ecbnh y\u00eau c\u1ea7u v\u1ec1 d\u00f2ng \u0111i\u1ec7n ch\u00ednh t\u1eeb d\u1ef1 \u00e1n tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh s\u00e0ng l\u1ecdc c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m. Ph\u1ea1m vi d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 ch\u1ec9 cho bi\u1ebft nh\u1eefng g\u00ec d\u00f2ng s\u1ea3n ph\u1ea9m \u0111\u00f3 cung c\u1ea5p; n\u00f3 kh\u00f4ng quy\u1ebft \u0111\u1ecbnh m\u1eabu n\u00e0o l\u00e0 ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng. C\u00e1c t\u00e0i li\u1ec7u tham kh\u1ea3o c\u1ee7a DP c\u00f4ng b\u1ed1 c\u00e1c ph\u1ea1m vi t\u1ef7 l\u1ec7 t\u1ed1i \u0111a do nh\u00e0 cung c\u1ea5p li\u1ec7t k\u00ea. C\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m BH-0.66 60I c\u00f3 d\u1ea3i t\u1eeb 200\/5A \u0111\u1ebfn 1500\/5A. C\u00e1c m\u1eabu GTA20L \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 c\u00f3 \u0111\u1ea7u v\u00e0o AC t\u1eeb 10\u2013100A. \u0110\u00e2y l\u00e0 c\u00e1c c\u1ea5u tr\u00fac d\u1eef li\u1ec7u s\u1ea3n ph\u1ea9m kh\u00e1c nhau v\u00e0 kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c coi l\u00e0 c\u00e1c quy t\u1eafc l\u1ef1a ch\u1ecdn c\u00f3 th\u1ec3 thay th\u1ebf cho nhau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. X\u00e1c nh\u1eadn \u0111\u1ea7u ra th\u1ee9 c\u1ea5p v\u00e0 t\u1ef7 s\u1ed1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ef7 s\u1ed1 CT m\u00f4 t\u1ea3 m\u1ed1i quan h\u1ec7 gi\u1eefa d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p v\u00e0 c\u00f4ng su\u1ea5t th\u1ee9 c\u1ea5p \u0111\u1ed1i v\u1edbi m\u1ed9t m\u1eabu m\u00e1y bi\u1ebfn \u00e1p c\u1ee5 th\u1ec3. Tr\u01b0\u1edbc ti\u00ean, c\u1ea7n x\u00e1c \u0111\u1ecbnh y\u00eau c\u1ea7u v\u1ec1 d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p, x\u00e1c \u0111\u1ecbnh c\u00f4ng su\u1ea5t th\u1ee9 c\u1ea5p m\u00e0 thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i y\u00eau c\u1ea7u, ki\u1ec3m tra c\u00e1c t\u1ef7 s\u1ed1 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 s\u1eb5n c\u00f3, v\u00e0 sau \u0111\u00f3 x\u00e1c nh\u1eadn th\u00f4ng tin chi ti\u1ebft trong t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt c\u1ee7a m\u1eabu m\u00e1y bi\u1ebfn \u00e1p c\u1ee5 th\u1ec3 \u0111\u00f3. Quy tr\u00ecnh n\u00e0y gi\u00fap tr\u00e1nh vi\u1ec7c gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng m\u1ed9t k\u00fd hi\u1ec7u quen thu\u1ed9c s\u1ebd \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BH-0.66 60I c\u00f4ng b\u1ed1 c\u00e1c h\u00e0ng th\u00f4ng s\u1ed1 \/5A c\u1ee5 th\u1ec3. GTA20L c\u00f4ng b\u1ed1 \u0111\u1ea7u ra AC 20mA v\u00e0 c\u00e1c t\u1ef7 l\u1ec7 \u00e1nh x\u1ea1 t\u1eeb 500:1 \u0111\u1ebfn 5000:1 tr\u00ean t\u00e1m m\u1eabu s\u1ea3n ph\u1ea9m c\u1ee7a d\u00f2ng n\u00e0y. D\u00f2ng DP kh\u00f4ng c\u00f4ng b\u1ed1 c\u1ea5u h\u00ecnh \u0111\u1ea7u ra \u0111\u1ea7y \u0111\u1ee7 cho m\u1ecdi m\u00e3 tham chi\u1ebfu \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea. Do \u0111\u00f3, kh\u00f4ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng chung tham chi\u1ebfu \/5A cho t\u1ea5t c\u1ea3 c\u00e1c CT c\u1ee7a RITOKS, v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c coi GTA20L l\u00e0 s\u1ea3n ph\u1ea9m thay th\u1ebf tr\u1ef1c ti\u1ebfp cho bi\u1ebfn \u00e1p \/5A.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. Ki\u1ec3m tra kh\u1ea9u \u0111\u1ed9 v\u00e0 kh\u00f4ng gian l\u1eafp \u0111\u1eb7t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">So s\u00e1nh k\u00edch th\u01b0\u1edbc c\u1ee7a d\u00e2y d\u1eabn ho\u1eb7c thanh d\u1eabn v\u1edbi \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 CT, sau \u0111\u00f3 ki\u1ec3m tra kh\u00f4ng gian tr\u1ed1ng, kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn \u0111\u1ec3 l\u1eafp \u0111\u1eb7t, ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 d\u00e2y d\u1eabn. GTA20L c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 8,5 mm v\u00e0 k\u00edch th\u01b0\u1edbc th\u00e2n nh\u1ecf g\u1ecdn. C\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 v\u00e0 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho d\u00f2ng DP ho\u1eb7c BH-0.66 60I tr\u00ean c\u00e1c trang hi\u1ec7n t\u1ea1i, do \u0111\u00f3 c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn theo t\u1eebng m\u1eabu c\u1ee5 th\u1ec3. H\u00ecnh \u1ea3nh s\u1ea3n ph\u1ea9m kh\u00f4ng ph\u1ea3i l\u00e0 b\u1eb1ng ch\u1ee9ng v\u1ec1 k\u00edch th\u01b0\u1edbc.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure data-spectra-id=\"spectra-c0a75811-c5db-400b-a337-2a526c451330\" class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" data-id=\"414\" height=\"800\" width=\"800\" src=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/O1CN01LE4QrA1LnbJIMx9HB_2218734541344-0-cib.jpg\" alt=\"BH-0.66 60I \u2013 Bi\u1ebfn d\u00f2ng \u0111i\u1ec7n \u00e1p th\u1ea5p\" class=\"wp-image-414\" srcset=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/O1CN01LE4QrA1LnbJIMx9HB_2218734541344-0-cib.jpg 800w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/O1CN01LE4QrA1LnbJIMx9HB_2218734541344-0-cib-300x300.jpg 300w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/O1CN01LE4QrA1LnbJIMx9HB_2218734541344-0-cib-100x100.jpg 100w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/O1CN01LE4QrA1LnbJIMx9HB_2218734541344-0-cib-600x600.jpg 600w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/O1CN01LE4QrA1LnbJIMx9HB_2218734541344-0-cib-150x150.jpg 150w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/O1CN01LE4QrA1LnbJIMx9HB_2218734541344-0-cib-768x768.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">H\u00ecnh \u1ea3nh minh h\u1ecda d\u00f2ng s\u1ea3n ph\u1ea9m l\u00f5i k\u00edn BH-0.66 60I.<\/figcaption><\/figure>\n\n\n<figure data-spectra-id=\"spectra-8e594e0b-2060-43d0-8f33-667abb5aea76\" class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" data-id=\"417\" height=\"2048\" width=\"2048\" src=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1.png\" alt=\"Bi\u1ebfn d\u00f2ng \u0111i\u1ec7n thu nh\u1ecf ch\u00ednh x\u00e1c GTA20L\" class=\"wp-image-417\" srcset=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1.png 2048w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1-300x300.png 300w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1-100x100.png 100w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1-600x600.png 600w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1-1024x1024.png 1024w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1-150x150.png 150w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1-768x768.png 768w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/08\/\u751f\u6210\u4ea7\u54c1\u767d\u5e95\u56fe-1-1-1536x1536.png 1536w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><figcaption class=\"wp-element-caption\">H\u00ecnh \u1ea3nh s\u1ea3n ph\u1ea9m bi\u1ebfn \u00e1p d\u00f2ng \u0111i\u1ec7n thu nh\u1ecf GTA20L.<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">5. Ki\u1ec3m tra c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 ch\u00ednh x\u00e1c l\u00e0 m\u1ed9t y\u00eau c\u1ea7u c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 ki\u1ec3m ch\u1ee9ng, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t ti\u00eau ch\u00ed x\u1ebfp h\u1ea1ng ch\u1ea5t l\u01b0\u1ee3ng. C\u00e1c trang thu\u1ed9c D\u00f2ng DP ch\u1ec9 ghi r\u00f5 \u201cLo\u1ea1i 0,5\u201d khi th\u00f4ng tin n\u00e0y \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 r\u00f5 r\u00e0ng. C\u00e1c h\u00e0ng BH-0.66 60I bao g\u1ed3m c\u00e1c L\u1edbp 1.0, 0.5, 0.5S, 0.2 v\u00e0 0.2S \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1, nh\u01b0ng t\u00ednh kh\u1ea3 d\u1ee5ng ph\u1ee5 thu\u1ed9c v\u00e0o h\u00e0ng c\u1ee5 th\u1ec3. GTA20L s\u1eed d\u1ee5ng thu\u1eadt ng\u1eef v\u1ec1 sai s\u1ed1 pha v\u00e0 \u0111\u1ed9 tuy\u1ebfn t\u00ednh \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 thay v\u00ec b\u1ea3ng ph\u00e2n lo\u1ea1i t\u01b0\u01a1ng \u1ee9ng. Kh\u00f4ng n\u00ean t\u1ef1 \u0111\u1ed9ng ch\u1ecdn b\u1ea5t k\u1ef3 l\u1edbp n\u00e0o ho\u1eb7c s\u1eed d\u1ee5ng l\u1edbp \u0111\u00f3 \u0111\u1ec3 suy ra t\u00ednh ph\u00f9 h\u1ee3p cho vi\u1ec7c t\u00ednh c\u01b0\u1edbc, \u0111o l\u01b0\u1eddng doanh thu ho\u1eb7c b\u1ea3o v\u1ec7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Ki\u1ec3m tra \u201cBurden\u201d t\u1ea1i n\u01a1i n\u00f3 \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cBurden\u201d l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a CT c\u00f3 th\u1ec3 c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ed1i chi\u1ebfu v\u1edbi m\u1ea1ch \u0111o l\u01b0\u1eddng k\u1ebft n\u1ed1i t\u1ea1i nh\u1eefng v\u1ecb tr\u00ed \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh. T\u00e0i li\u1ec7u BH-0.66 60I c\u00f4ng b\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb 2,5VA cho c\u00e1c h\u00e0ng 200\/5A v\u00e0 250\/5A \u1edf c\u00e1c l\u1edbp 1,0 v\u00e0 0,5 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb, c\u00e1c gi\u00e1 tr\u1ecb 5VA trong c\u00e1c h\u00e0ng \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 ch\u00ednh x\u00e1c t\u1eeb 300\/5A \u0111\u1ebfn 600\/5A, v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb 10VA trong c\u00e1c h\u00e0ng \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 ch\u00ednh x\u00e1c t\u1eeb 750\/5A \u0111\u1ebfn 1500\/5A. C\u00e1c gi\u00e1 tr\u1ecb n\u00e0y ph\u1ea3i lu\u00f4n g\u1eafn li\u1ec1n v\u1edbi c\u00e1c h\u00e0ng ngu\u1ed3n t\u01b0\u01a1ng \u1ee9ng. T\u1ea3i tr\u1ecdng kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho DP, v\u00e0 khung VA c\u1ee7a BH kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c chuy\u1ec3n sang GTA20L.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. X\u00e1c nh\u1eadn d\u1eef li\u1ec7u v\u1ec1 t\u1ea7n s\u1ed1 v\u00e0 c\u00e1ch \u0111i\u1ec7n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c y\u00eau c\u1ea7u v\u1ec1 t\u1ea7n s\u1ed1, c\u00e1ch \u0111i\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng c\u1ea7n \u0111\u01b0\u1ee3c n\u00eau r\u00f5 khi c\u00f3 li\u00ean quan. GTA20L c\u00f4ng b\u1ed1 th\u00f4ng s\u1ed1 50\/60 Hz, \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n l\u1edbn h\u01a1n 1000 M\u03a9, d\u1ea3i \u0111i\u1ec7n \u00e1p 0,66\/0,72 kV v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng 4 kV \/ 50 Hz \/ 1 ph\u00fat. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee5 th\u1ec3 n\u00e0y kh\u00f4ng \u00e1p d\u1ee5ng cho c\u00e1c m\u1eabu DP ho\u1eb7c BH-0.66 60I, v\u00ec c\u00e1c trang th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt hi\u1ec7n t\u1ea1i c\u1ee7a c\u00e1c m\u1eabu n\u00e0y kh\u00f4ng c\u00f4ng b\u1ed1 \u0111\u1ea7y \u0111\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 t\u1ea7n s\u1ed1 v\u00e0 c\u00e1ch \u0111i\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m bi\u1ebfn d\u00f2ng RITOKS \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i <a href=\"https:\/\/ritoks.com\/vi\/product-category\/electrical-measurement-monitoring\/current-transformers\/\">Danh m\u1ee5c Bi\u1ebfn d\u00f2ng<\/a> n\u1eb1m trong <a href=\"https:\/\/ritoks.com\/vi\/product-category\/electrical-measurement-monitoring\/\">\u0110o l\u01b0\u1eddng v\u00e0 gi\u00e1m s\u00e1t \u0111i\u1ec7n<\/a>. Ph\u1ea7n t\u1ed5ng quan d\u01b0\u1edbi \u0111\u00e2y ch\u1ec9 d\u00e0nh cho vi\u1ec7c s\u00e0ng l\u1ecdc gia \u0111\u00ecnh. \u0110\u1ed1i v\u1edbi c\u00e1c ki\u1ebfn tr\u00fac \u0111o l\u01b0\u1eddng li\u1ec1n k\u1ec1 nh\u01b0ng kh\u00f4ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, h\u00e3y so s\u00e1nh <a href=\"https:\/\/ritoks.com\/vi\/product-category\/electrical-measurement-monitoring\/rogowski-coils\/\">Cu\u1ed9n d\u00e2y Rogowski<\/a> ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/ritoks.com\/vi\/products\/zrc-flexible-rogowski-coils-600a-3000a\/\">Gia \u0111\u00ecnh ZRC<\/a>, <a href=\"https:\/\/ritoks.com\/vi\/product-category\/electrical-measurement-monitoring\/hall-current-sensors\/\">C\u1ea3m bi\u1ebfn d\u00f2ng \u0111i\u1ec7n Hall<\/a> ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/ritoks.com\/vi\/products\/hs2v-h02-open-loop-hall-current-sensors\/\">D\u00f2ng s\u1ea3n ph\u1ea9m HS2V H02<\/a>, v\u00e0 <a href=\"https:\/\/ritoks.com\/vi\/product-category\/electrical-measurement-monitoring\/dc-current-transducers\/\">C\u1ea3m bi\u1ebfn d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u<\/a> ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/ritoks.com\/vi\/products\/wbi334u01-s-dc-current-transducer-4-20ma\/\">WBI334U01-S<\/a>; c\u00e1c nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, \u0111\u1ea7u ra v\u00e0 y\u00eau c\u1ea7u l\u1eafp \u0111\u1eb7t c\u1ee7a ch\u00fang kh\u00f4ng th\u1ec3 thay th\u1ebf l\u1eabn nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ed5ng quan v\u1ec1 d\u00f2ng s\u1ea3n ph\u1ea9m bi\u1ebfn d\u00f2ng RITOKS \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Gia \u0111\u00ecnh<\/th><th>X\u00e2y d\u1ef1ng<\/th><th>Th\u00f4ng tin v\u1ec1 c\u1ea5p h\u1ecdc ti\u1ec3u h\u1ecdc v\u00e0 t\u1ef7 l\u1ec7 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1<\/th><th>K\u1ebft qu\u1ea3 th\u1ee9 c\u1ea5p \u0111\u00e3 c\u00f4ng b\u1ed1<\/th><th>C\u00e1c l\u0129nh v\u1ef1c v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c \/ hi\u1ec7u su\u1ea5t<\/th><th>D\u1eef li\u1ec7u c\u01a1 kh\u00ed<\/th><th>C\u00e1c d\u1eef li\u1ec7u ch\u00ednh c\u1ea7n x\u00e1c nh\u1eadn<\/th><\/tr><\/thead><tbody>\n<tr><td>D\u00f2ng DP<\/td><td>L\u00f5i t\u00e1ch \u0111\u00f4i<\/td><td>Ch\u00edn t\u00e0i li\u1ec7u tham kh\u1ea3o c\u00f3 ph\u1ea1m vi t\u1ef7 l\u1ec7 t\u1ed1i \u0111a do nh\u00e0 cung c\u1ea5p li\u1ec7t k\u00ea<\/td><td>C\u1ea5u h\u00ecnh \u0111\u1ea7y \u0111\u1ee7 ch\u01b0a \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1<\/td><td>Ch\u1ec9 \u00e1p d\u1ee5ng l\u1edbp 0,5 trong tr\u01b0\u1eddng h\u1ee3p \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 r\u00f5 r\u00e0ng<\/td><td>Ch\u01b0a \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n<\/td><td>C\u00f4ng su\u1ea5t, t\u1ea3i tr\u1ecdng, t\u1ea7n s\u1ed1, c\u00e1ch \u0111i\u1ec7n, kh\u1ea9u \u0111\u1ed9, k\u00edch th\u01b0\u1edbc, c\u00e1ch l\u1eafp \u0111\u1eb7t v\u00e0 t\u00e0i li\u1ec7u<\/td><\/tr>\n<tr><td>BH-0.66 60I<\/td><td>L\u00f5i k\u00edn, \u0111i\u1ec7n \u00e1p th\u1ea5p, m\u1ed9t l\u00f5i<\/td><td>M\u01b0\u1eddi m\u1ed9t d\u00e3y t\u1eeb 200\/5A \u0111\u1ebfn 1500\/5A<\/td><td>5A theo c\u00e1c h\u00e0ng \u0111\u00e3 c\u00f4ng b\u1ed1 ch\u00ednh x\u00e1c<\/td><td>S\u1ef1 t\u01b0\u01a1ng \u1ee9ng ch\u00ednh x\u00e1c gi\u1eefa c\u00e1c h\u00e0ng \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ee5c \u201cclass\u201d v\u00e0 \u201c2,5VA\u201d, \u201c5VA\u201d ho\u1eb7c \u201c10VA\u201d<\/td><td>Ch\u01b0a \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n<\/td><td>K\u00edch th\u01b0\u1edbc, t\u1ea7n s\u1ed1, c\u00e1ch \u0111i\u1ec7n, c\u00e1ch l\u1eafp \u0111\u1eb7t v\u00e0 t\u00e0i li\u1ec7u<\/td><\/tr>\n<tr><td>GTA20L<\/td><td>M\u00f4 h\u00ecnh thu nh\u1ecf<\/td><td>T\u00e1m m\u1eabu; \u0111\u1ea7u v\u00e0o AC 10\u2013100A; t\u1ef7 l\u1ec7 \u00e1nh x\u1ea1 500:1\u20135000:1<\/td><td>20 mA AC<\/td><td>C\u00e1c tr\u01b0\u1eddng sai s\u1ed1 pha theo m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c, \u0111\u1ed9 tuy\u1ebfn t\u00ednh, \u0111i\u1ec7n tr\u1edf v\u00e0 d\u1ea3i tuy\u1ebfn t\u00ednh<\/td><td>Th\u00e2n m\u00e1y 26 \u00d7 28,4 mm, kh\u1ea9u \u0111\u1ed9 8,5 mm, chi\u1ec1u d\u00e0i d\u00e2y d\u1eabn 200 mm<\/td><td>M\u1eabu s\u1ea3n ph\u1ea9m ch\u00ednh x\u00e1c, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u00e0 c\u00e1c t\u00e0i li\u1ec7u c\u1ea7n thi\u1ebft<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">8. Quy tr\u00ecnh x\u00e1c minh m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c<\/h2>\n\n\n\n<figure data-spectra-id=\"spectra-f887b08a-ecee-4b63-b440-7a378173eebd\" class=\"wp-block-image size-full\"><a href=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-selection-workflow.jpg\"><img loading=\"lazy\" decoding=\"async\" height=\"943\" width=\"900\" src=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-selection-workflow.jpg\" alt=\"Quy tr\u00ecnh ki\u1ec3m \u0111\u1ecbnh m\u00e1y bi\u1ebfn d\u00f2ng \u0111i\u1ec7n, t\u1eeb y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng cho \u0111\u1ebfn vi\u1ec7c x\u00e1c \u0111\u1ecbnh t\u1ef7 s\u1ed1 bi\u1ebfn \u0111\u1ed5i v\u00e0 x\u00e1c nh\u1eadn m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c\" class=\"wp-image-790\" srcset=\"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-selection-workflow.jpg 900w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-selection-workflow-600x629.jpg 600w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-selection-workflow-286x300.jpg 286w, https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-selection-workflow-768x805.jpg 768w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/a><figcaption class=\"wp-element-caption\">Quy tr\u00ecnh kh\u00e1i ni\u1ec7m nh\u1eb1m x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi bi\u1ebfn d\u00f2ng v\u00e0 ki\u1ec3m tra c\u1ea5u t\u1ea1o, d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p, d\u00f2ng \u0111i\u1ec7n th\u1ee9 c\u1ea5p, t\u1ef7 s\u1ed1 bi\u1ebfn \u0111\u1ed5i, s\u1ef1 ph\u00f9 h\u1ee3p c\u01a1 h\u1ecdc, \u0111\u1ed9 ch\u00ednh x\u00e1c, t\u1ea3i tr\u1ecdng c\u0169ng nh\u01b0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c tr\u01b0\u1edbc khi x\u00e1c nh\u1eadn m\u1eabu v\u00e0 g\u1eedi y\u00eau c\u1ea7u b\u00e1o gi\u00e1 (RFQ). \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n ho\u1eb7c x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc bi\u1ebfn d\u00f2ng.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">9. Th\u00f4ng tin c\u1ea7n n\u00eau trong y\u00eau c\u1ea7u b\u00e1o gi\u00e1 v\u1ec1 m\u00e1y bi\u1ebfn d\u00f2ng<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Y\u00eau c\u1ea7u v\u1ec1 \u1ee9ng d\u1ee5ng v\u00e0 \u0111o l\u01b0\u1eddng<\/li><li>Y\u00eau c\u1ea7u v\u1ec1 k\u1ebft c\u1ea5u CT<\/li><li>Y\u00eau c\u1ea7u v\u1ec1 d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p<\/li><li>C\u00f4ng su\u1ea5t th\u1ee9 c\u1ea5p v\u00e0 t\u1ef7 s\u1ed1 y\u00eau c\u1ea7u (n\u1ebfu bi\u1ebft)<\/li><li>K\u00edch th\u01b0\u1edbc thanh d\u1eabn ho\u1eb7c thanh c\u00e1i v\u00e0 k\u00edch th\u01b0\u1edbc l\u1ed7 c\u1eaft c\u1ea7n thi\u1ebft<\/li><li>Y\u00eau c\u1ea7u v\u1ec1 quy\u1ec1n truy c\u1eadp v\u00e0 l\u1eafp \u0111\u1eb7t<\/li><li>C\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 g\u00e1nh n\u1eb7ng, n\u1ebfu c\u00f3<\/li><li>T\u1ea7n s\u1ed1 v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 c\u00e1ch \u0111i\u1ec7n ho\u1eb7c kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i<\/li><li>S\u1ed1 l\u01b0\u1ee3ng v\u00e0 \u0111i\u1ec3m \u0111\u1ebfn<\/li><li>B\u1ea3ng d\u1eef li\u1ec7u, b\u1ea3n v\u1ebd v\u00e0 c\u00e1c t\u00e0i li\u1ec7u kh\u00e1c c\u1ea7n thi\u1ebft<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">10. Nh\u1eefng d\u1eef li\u1ec7u n\u00e0o v\u1eabn c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1eb1ng m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c x\u00e1c nh\u1eadn theo t\u1eebng m\u1eabu l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p khi trang web kh\u00f4ng c\u00f4ng b\u1ed1 \u0111\u1ea7y \u0111\u1ee7 th\u00f4ng tin v\u1ec1 c\u1ea5u h\u00ecnh \u0111\u1ea7u ra, kh\u1ea9u \u0111\u1ed9, k\u00edch th\u01b0\u1edbc, ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t, t\u1ea3i tr\u1ecdng, t\u1ea7n s\u1ed1, th\u00f4ng s\u1ed1 c\u00e1ch \u0111i\u1ec7n ho\u1eb7c t\u00e0i li\u1ec7u tham kh\u1ea3o. Vi\u1ec7c thi\u1ebfu m\u1ed9t th\u00f4ng s\u1ed1 n\u00e0o \u0111\u00f3 kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 y\u00eau c\u1ea7u \u0111\u00f3 kh\u00f4ng quan tr\u1ecdng ho\u1eb7c gi\u00e1 tr\u1ecb c\u1ee7a d\u00f2ng s\u1ea3n ph\u1ea9m kh\u00e1c c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng. H\u00e3y y\u00eau c\u1ea7u cung c\u1ea5p ch\u00ednh x\u00e1c m\u1eabu s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 \u0111\u1eb7t h\u00e0ng v\u00e0 c\u00e1c t\u00e0i li\u1ec7u c\u1ea7n thi\u1ebft cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CT Direction and Placement: Reviewing Unexpected Readings<\/h2>\n<p class=\"wp-block-paragraph\">When a monitoring system reports a negative value, zero current or a result that does not match another meter, first establish whether the reading is actually unexpected. Negative active power can indicate genuine export under the meter\u2019s sign convention. Confirm the operating power flow before treating a negative reading as a wiring fault.<\/p>\n<p class=\"wp-block-paragraph\">The same symptom can come from different causes: CT orientation, the wrong conductor or branch, phase mismatch, an incorrect ratio, or a software setting. Use the symptom to guide document and configuration review.<\/p>\n<h3 class=\"wp-block-heading\">Symptoms and records to review<\/h3>\n<figure class=\"wp-block-table\"><table><thead><tr><th>Observed symptom<\/th><th>Possible causes to consider<\/th><th>First non-invasive check<\/th><\/tr><\/thead><tbody><tr><td>Import and export appear reversed<\/td><td>Actual export, CT orientation, sign convention or measurement location<\/td><td>Compare operating power flow with the CT and meter documentation<\/td><\/tr><tr><td>Reading is close to zero during a load<\/td><td>For ordinary load measurement, opposing conductor currents can cancel; the wrong branch or an unclosed core can also be involved<\/td><td>Review drawings and commissioning photos; ask the installer to verify conductor routing<\/td><\/tr><tr><td>One phase differs<\/td><td>CT phase does not match the voltage reference or phase order<\/td><td>Compare phase labels and CT input channels<\/td><\/tr><tr><td>Value is consistently high or low<\/td><td>Ratio, scaling, unit or secondary-output setting<\/td><td>Compare the exact CT model and ratio with the meter configuration<\/td><\/tr><tr><td>Value changes sign between modes<\/td><td>Actual import\/export reversal, source\/load position or monitoring profile<\/td><td>Check real power flow first, then the documented sign convention<\/td><\/tr><\/tbody><\/table><\/figure>\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/docs.openenergymonitor.org\/electricity-monitoring\/ct-sensors\/installation.html\" target=\"_blank\" rel=\"noopener\">OpenEnergyMonitor\u2019s installation guidance<\/a> explains why a CT around multiple conductors can read their vector sum and why polarity affects real-power sign. Its single-conductor guidance applies to ordinary load measurement; dedicated residual-current or summation schemes require their own design instructions.<\/p>\n<h3 class=\"wp-block-heading\">Define the measurement boundary<\/h3>\n<p class=\"wp-block-paragraph\">A CT at a grid connection, between an inverter and a distribution board, or on a load branch answers a different question. A correct arrow cannot compensate for a CT installed at the wrong system boundary. Record the target, physical location, monitored conductor, positive direction, voltage reference and monitoring mode.<\/p>\n<h3 class=\"wp-block-heading\">Read the documented polarity convention<\/h3>\n<p class=\"wp-block-paragraph\">CTs may use an arrow, P1\/P2, H1\/H2, K\/L, a dot or another mark. The meaning must come from the CT or meter documentation. Follow this order: identify the exact CT and receiving device; read the positive-flow definition; compare the mark; check the voltage-reference phase and input channel; then check ratio, scale and mode.<\/p>\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.se.com\/au\/en\/faqs\/FA203850\/\" target=\"_blank\" rel=\"noopener\">Schneider\u2019s CT orientation guidance<\/a> covers polarity marks and limits installation and maintenance to qualified personnel. Use records and configuration screenshots for this review.<\/p>\n<h3 class=\"wp-block-heading\">Prepare the support request<\/h3>\n<ul class=\"wp-block-list\"><li>Exact CT model and complete suffix<\/li><li>Polarity marking, ratio and secondary output<\/li><li>Monitored conductor, phase and physical location<\/li><li>Receiving input type, ratio, scale factor and unit<\/li><li>Voltage-reference channel and monitoring mode<\/li><li>Timestamped screenshots, operating condition and installation records<\/li><\/ul>\n<h3 class=\"wp-block-heading\">Refer physical changes to qualified personnel<\/h3>\n<p class=\"wp-block-paragraph\">Stop at the document and software-review stage when the CT is inside a live distribution board, the CT type or secondary circuit is unknown, the conductor cannot be identified, or the proposed fix requires disconnecting leads or moving the sensor. A current-output CT with an open secondary can develop hazardous voltage while primary current is flowing. The exact CT construction and manufacturer\u2019s procedure must be checked by qualified personnel before physical changes.<\/p><h2 class=\"wp-block-heading\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>C\u1ea7n nh\u1eefng th\u00f4ng tin n\u00e0o \u0111\u1ec3 l\u1ef1a ch\u1ecdn m\u1ed9t m\u00e1y bi\u1ebfn d\u00f2ng?<\/summary><p class=\"wp-block-paragraph\">X\u00e1c \u0111\u1ecbnh m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng, c\u1ea5u t\u1ea1o, d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p, c\u00f4ng su\u1ea5t \u0111\u1ea7u ra th\u1ee9 c\u1ea5p y\u00eau c\u1ea7u, t\u1ef7 s\u1ed1 bi\u1ebfn \u00e1p, s\u1ef1 ph\u00f9 h\u1ee3p v\u1ec1 k\u00edch th\u01b0\u1edbc, \u0111i\u1ec1u ki\u1ec7n ti\u1ebfp c\u1eadn khi l\u1eafp \u0111\u1eb7t, \u0111\u1ed9 ch\u00ednh x\u00e1c, t\u1ea3i tr\u1ecdng (n\u1ebfu c\u00f3), t\u1ea7n s\u1ed1, y\u00eau c\u1ea7u v\u1ec1 c\u00e1ch \u0111i\u1ec7n v\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt chi ti\u1ebft v\u1ec1 m\u1eabu s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3.<\/p><\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u1ea5u tr\u00fac CT l\u00f5i t\u00e1ch v\u00e0 l\u00f5i k\u00edn l\u00e0 g\u00ec?<\/summary><p class=\"wp-block-paragraph\">M\u1ed9t cu\u1ed9n bi\u1ebfn d\u00f2ng l\u00f5i t\u00e1ch \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t xung quanh m\u1ed9t d\u00e2y d\u1eabn ho\u1eb7c thanh d\u1eabn \u0111i\u1ec7n hi\u1ec7n c\u00f3. M\u1ed9t cu\u1ed9n bi\u1ebfn d\u00f2ng l\u00f5i k\u00edn y\u00eau c\u1ea7u d\u00e2y d\u1eabn ph\u1ea3i \u0111i qua l\u1ed7 m\u1edf c\u1ee7a n\u00f3. B\u1ea3n th\u00e2n c\u1ea5u tr\u00fac c\u1ee7a t\u1eebng lo\u1ea1i kh\u00f4ng quy\u1ebft \u0111\u1ecbnh \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t \u0111i\u1ec7n hay t\u00ednh ph\u00f9 h\u1ee3p trong \u1ee9ng d\u1ee5ng.<\/p><\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>T\u00f4i c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh d\u00f2ng \u0111i\u1ec7n c\u1ea3m \u1ee9ng (CT) ch\u1ec9 d\u1ef1a tr\u00ean d\u00f2ng \u0111i\u1ec7n s\u01a1 c\u1ea5p kh\u00f4ng?<\/summary><p class=\"wp-block-paragraph\">Kh\u00f4ng. C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ea7u ra th\u1ee9 c\u1ea5p, t\u1ef7 s\u1ed1 truy\u1ec1n, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i, s\u1ef1 ph\u00f9 h\u1ee3p v\u1ec1 m\u1eb7t v\u1eadt l\u00fd, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 c\u00e1c y\u00eau c\u1ea7u kh\u00e1c c\u1ee7a d\u1ef1 \u00e1n c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/p><\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>T\u1ea1i sao ph\u1ea3i x\u00e1c nh\u1eadn \u0111\u1ea7u ra th\u1ee9 c\u1ea5p v\u00e0 t\u1ef7 s\u1ed1 CT?<\/summary><p class=\"wp-block-paragraph\">C\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m RITOKS cung c\u1ea5p c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u0111\u1ea7u ra kh\u00e1c nhau. M\u1eabu BH-0.66 60I s\u1eed d\u1ee5ng c\u00e1c h\u00e0ng \/5A r\u00f5 r\u00e0ng, m\u1eabu GTA20L cung c\u1ea5p \u0111\u1ea7u ra 20mA AC, c\u00f2n d\u00f2ng DP kh\u00f4ng cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 m\u1ecdi c\u1ea5u h\u00ecnh \u0111\u1ea7u ra.<\/p><\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>T\u1ea5t c\u1ea3 c\u00e1c m\u00e1y CT RITOKS \u0111\u1ec1u c\u00f3 c\u00f9ng m\u1ed9t c\u1ea5p \u0111\u1ed9 \u0111\u1ed9 ch\u00ednh x\u00e1c hay kh\u00f4ng?<\/summary><p class=\"wp-block-paragraph\">Kh\u00f4ng. C\u00e1c thu\u1eadt ng\u1eef li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c ho\u1eb7c hi\u1ec7u su\u1ea5t ph\u1ee5 thu\u1ed9c v\u00e0o t\u1eebng d\u00f2ng s\u1ea3n ph\u1ea9m v\u00e0 t\u1eebng m\u1eabu c\u1ee5 th\u1ec3. Vui l\u00f2ng tham kh\u1ea3o t\u00e0i li\u1ec7u ch\u00ednh th\u1ee9c v\u1ec1 d\u00f2ng s\u1ea3n ph\u1ea9m ho\u1eb7c m\u1eabu c\u1ee5 th\u1ec3 \u0111\u00f3.<\/p><\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>C\u00e1c gi\u00e1 tr\u1ecb t\u1ea3i c\u00f3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho t\u1eebng bi\u1ebfn d\u00f2ng RITOKS kh\u00f4ng?<\/summary><p class=\"wp-block-paragraph\">Kh\u00f4ng. C\u00e1c gi\u00e1 tr\u1ecb VA ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho c\u00e1c h\u00e0ng BH-0.66 60I c\u1ee5 th\u1ec3. Gi\u00e1 tr\u1ecb t\u1ea3i tr\u1ecdng kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho d\u00f2ng DP, v\u00e0 kh\u00f4ng n\u00ean gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng khung c\u1ea5u tr\u00fac c\u1ee7a GTA20L c\u0169ng gi\u1ed1ng nh\u01b0 v\u1eady.<\/p><\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Khi y\u00eau c\u1ea7u m\u1ed9t m\u00f4 h\u00ecnh CT ch\u00ednh x\u00e1c, t\u00f4i c\u1ea7n cung c\u1ea5p nh\u1eefng th\u00f4ng tin g\u00ec?<\/summary><p class=\"wp-block-paragraph\">Vui l\u00f2ng cung c\u1ea5p c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n v\u00e0 c\u01a1 kh\u00ed, c\u00f4ng su\u1ea5t \u0111\u1ea7u ra v\u00e0 t\u1ef7 s\u1ed1 y\u00eau c\u1ea7u, chi ti\u1ebft l\u1eafp \u0111\u1eb7t, s\u1ed1 l\u01b0\u1ee3ng, \u0111i\u1ec3m \u0111\u1ebfn, c\u00f9ng v\u1edbi b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ho\u1eb7c b\u1ea3n v\u1ebd c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e1c minh.<\/p><\/details>\n\n\n\n<div class=\"wp-block-group has-base-color has-contrast-background-color has-text-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">X\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c lo\u1ea1i bi\u1ebfn d\u00f2ng ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Vui l\u00f2ng g\u1eedi cho RITOKS c\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u1ee9ng d\u1ee5ng, l\u01b0u l\u01b0\u1ee3ng hi\u1ec7n t\u1ea1i, l\u01b0u l\u01b0\u1ee3ng \u0111\u1ea7u ra, t\u1ef7 l\u1ec7, s\u1ef1 ph\u00f9 h\u1ee3p v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 t\u00e0i li\u1ec7u \u0111\u1ec3 ti\u1ebfn h\u00e0nh \u0111\u00e1nh gi\u00e1 m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/ritoks.com\/vi\/contact-us\/\">Li\u00ean h\u1ec7 v\u1edbi RITOKS \u0111\u1ec3 nh\u1eadn y\u00eau c\u1ea7u b\u00e1o gi\u00e1 (RFQ)<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Selecting a current transformer starts with the measurement requirement, not with a model number alone. Buyers should define the physical [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1427,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ritoks_resource_detail_renderer":null,"ritoks_resource_product_cat_term_id":0,"footnotes":""},"categories":[68],"tags":[],"class_list":["post-789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical-measurement-monitoring"],"acf":[],"spectra_blocks_featured_image_url":{"thumbnail":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-hero-150x150.webp","width":150,"height":150},"medium":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-hero-300x169.webp","width":300,"height":169},"medium_large":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-hero-768x432.webp","width":768,"height":432},"large":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-hero-1024x576.webp","width":1024,"height":576},"full":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/current-transformer-hero.webp","width":1672,"height":941}},"spectra_blocks_author_info":{"display_name":"RITOKS","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/6d7d0fc73468198f994ab13ef6eb6558c53b6ed1ad86364d5165efe8bdf8eb4a?s=96&d=mm&r=g","author_link":"https:\/\/ritoks.com\/vi\/author\/dazzlingwqbgmail-com\/","description":""},"_links":{"self":[{"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/posts\/789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/comments?post=789"}],"version-history":[{"count":4,"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/posts\/789\/revisions"}],"predecessor-version":[{"id":2407,"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/posts\/789\/revisions\/2407"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/media\/1427"}],"wp:attachment":[{"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/media?parent=789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/categories?post=789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ritoks.com\/vi\/wp-json\/wp\/v2\/tags?post=789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}