S\u01a1 \u0111\u1ed3 c\u1ea5p ngu\u1ed3n 220VDC \u0111i\u1ec3n hình trong nhà máy \u0111i\u1ec7n<\/em>\n<\/p>\n\n\tPh\u1ea7n thi\u1ebft b\u1ecb giám sát ch\u1ea1m \u0111\u1ea5t \u0111\u01b0\u1ee3c c\u1ee5 th\u1ec3 hoá b\u1eb1ng thi\u1ebft b\u1ecb c\u1ee7a BENDER\n<\/p>\n
\n\tT\u1ea7m quan tr\u1ecdng, tính liên t\u1ee5c, s\u1eb5n sàng c\u1ee7a h\u1ec7 th\u1ed1ng DC220V này thì \u0111ã rõ, n\u1ebfu h\u1ec7 th\u1ed1ng b\u1ecb ng\u1eaft quãng, s\u1ebd gây nên vi\u1ec7c ng\u1eaft \u0111i\u1ec7n cho toàn t\u1ed5 máy, toàn nhà máy, vi\u1ec7c d\u1eebng \u0111\u1ec3 tìm ki\u1ebfm và kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 s\u1ebd gây tiêu t\u1ed1n chi phí r\u1ea5t l\u1edbn, ch\u01b0a tính \u0111\u1ebfn các nguy c\u01a1 cháy n\u1ed5 có th\u1ec3 x\u1ea3y \u0111\u1ebfn n\u1ebfu h\u1ec7 th\u1ed1ng này có ch\u1ea1m ch\u1eadp mà không \u0111\u01b0\u1ee3c ki\u1ec3m soát.\n<\/p>\n
\n\tVì v\u1eady ngoài vi\u1ec7c ki\u1ec3m tra b\u1ea3o d\u01b0\u1ee1ng th\u01b0\u1eddng xuyên h\u1ec7 th\u1ed1ng ngu\u1ed3n này, thì vi\u1ec7c giám sát \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n và các l\u1ed7i ch\u1ea1m \u0111\u1ea5t là \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng \u0111\u1ec3 duy trì tính liên t\u1ee5c cho toàn nhà máy.\n<\/p>\n
\n\tGi\u1ea3i pháp cho v\u1ea5n \u0111\u1ec1 này chúng tôi \u0111\u01b0\u1ee3c \u0111\u01b0a ra :\n<\/p>\n
\n\t![\"DC220](\"http:\/\/mese.vn\/wp-content\/uploads\/2016\/08\/DC220-EDS-1047x523.png\")
\n<\/p>\n
\n\tPh\u1ea7n thi\u1ebft b\u1ecb giám sát ch\u1ea1m \u0111\u1ea5t \u0111\u01b0\u1ee3c c\u1ee5 th\u1ec3 hóa v\u1edbi thi\u1ebft b\u1ecb c\u1ee7a BENDER<\/em>\n<\/p>\n\n\tTr\u01b0\u1edbc kia, khi công ngh\u1ec7 ch\u01b0a có s\u1ef1 phát tri\u1ec3n v\u01b0\u1ee3t tr\u1ed9i trong l\u0129nh v\u1ef1c này, \u0111\u1ec3 b\u1ea3o v\u1ec7 ch\u1ea1m \u0111\u1ea5t cho h\u1ec7 th\u1ed1ng DC 220V, th\u01b0\u1eddng s\u1eed d\u1ee5ng các r\u01a1-le b\u1ea3o v\u1ec7 ch\u1ea1m \u0111\u1ea5t (ELR – RCD), ngày nay \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n c\u1ee7a h\u1ec7 th\u1ed1ng ngu\u1ed3n trung tính cách ly \u0111\u01b0\u1ee3c theo dõi b\u1edfi thi\u1ebft b\u1ecb giám sát \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n (IMD – Insulation Monitoring Device) – V\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec7n trung tính cách ly (IT system) các thi\u1ebft b\u1ecb nh\u01b0 IMD là yêu c\u1ea7u b\u1eaft bu\u1ed9c – IEC 60364-4-41\n<\/p>\n
\n\tIMD – thi\u1ebft b\u1ecb giám sát \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n – không ch\u1ec9 cho phép \u0111o liên t\u1ee5c và hi\u1ec3n th\u1ecb giá tr\u1ecb \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n h\u1ec7 th\u1ed1ng, cho ta bi\u1ebft \u0111\u1ed9 suy gi\u1ea3m \u0111\u1ec3 có k\u1ebf ho\u1ea1ch b\u1ea3o d\u01b0\u1ee1ng t\u1ed1t, mà còn h\u1ed7 tr\u1ee3 tìm ki\u1ebfm l\u1ed7i ch\u1ea1m \u0111\u1ea5t. IRDH575 c\u1ee7a BENDER là m\u1ed9t thi\u1ebft b\u1ecb nh\u01b0 v\u1eady.\n<\/p>\n
\n\t\u1ede s\u01a1 \u0111\u1ed3 trên, ta th\u1ea5y \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c giám sát b\u1edfi IRDH575, thi\u1ebft b\u1ecb này có các tính n\u0103ng c\u01a1 b\u1ea3n :\n<\/p>\n
\n- \n\t\tGiám sát \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n h\u1ec7 th\u1ed1ng trung tính cách ly 3AC, AC\/DC và DC v\u1edbi các c\u1ea5p \u0111i\u1ec7n áp t\u01b0\u01a1ng \u1ee9ng 20…575 V\/340…760 V.\n\t<\/li>\n
- \n\t\tD\u1ea3i giá tr\u1ecb \u0111o 1 kΩ…10 MΩ v\u1edbi 2 ng\u01b0\u1ee1ng c\u1ea3nh báo \u0111\u1eb7t linh ho\u1ea1t.\n\t<\/li>\n
- \n\t\tCho phép giám sát m\u1ea1ng có \u0111i\u1ec7n dung rò lên \u0111\u1ebfn 500uF\n\t<\/li>\n
- \n\t\t\u0110o tr\u1ef1c ti\u1ebfp, liên t\u1ee5c b\u1eb1ng ph\u01b0\u01a1ng pháp AMP plus<\/strong> do BENDER phát tri\u1ec3n\n\t<\/li>\n
- \n\t\tTích h\u1ee3p tính n\u0103ng phát xung tìm ki\u1ebfm s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t.\n\t<\/li>\n<\/ul>\n
\n\tNgoài vi\u1ec7c cho bi\u1ebft \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n c\u0169ng nh\u01b0 chi\u1ec1u h\u01b0\u1edbng suy gi\u1ea3m cách \u0111i\u1ec7n<\/em><\/strong> \u0111\u1ec3 có k\u1ebf ho\u1ea1ch b\u1ea3o d\u01b0\u1ee1ng thì m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a gi\u1ea3i pháp là \u0111\u01b0a ra thông tin chính xác v\u1ecb trí – l\u1ed9 tuy\u1ebfn x\u1ea3y ra l\u1ed7i cách \u0111i\u1ec7n<\/em><\/strong> \u0111\u1ec3 rút ng\u1eafn th\u1eddi gian tìm ki\u1ebfm và x\u1eed lý l\u1ed7i ch\u1ea1m \u0111\u1ea5t.\n<\/p>\n\n\t\u0110i\u1ec1u này có \u0111\u01b0\u1ee3c là nh\u1edd s\u1ef1 k\u1ebft h\u1ee3p hoàn h\u1ea3o gi\u1eefa b\u1ed9 3 các thi\u1ebft b\u1ecb IRDH – EDS – ZCT<\/strong>. Khi có l\u1ed7i ch\u1ea1m \u0111\u1ea5t – \u0111i\u1ec7n tr\u1edf cách \u0111i\u1ec7n suy gi\u1ea3m, IRDH \u0111\u01b0a ra c\u1ea3nh báo và kích ho\u1ea1t phát xung tìm ki\u1ebfm, dòng xung ch\u1ea1y trên toàn h\u1ec7 th\u1ed1ng \u0111i qua \u0111i\u1ec3m có l\u1ed7i cách \u0111i\u1ec7n và \u0111\u01b0\u1ee3c EDS cùng bi\u1ebfn dòng th\u1ee9 t\u1ef1 không ZCT phát hi\u1ec7n, báo v\u1ecb trí c\u0169ng nh\u01b0 c\u01b0\u1eddng \u0111\u1ed9 rò chính xác v\u1ec1 h\u1ec7 th\u1ed1ng c\u1ea3nh báo – cung c\u1ea5p thông tin cho k\u1ef9 thu\u1eadt viên t\u1edbi và x\u1eed lý, \u0111i\u1ec1u mà tr\u01b0\u1edbc kia k\u1ef9 thu\u1eadt viên ch\u1ec9 có th\u1ec3 có sau khi h\u1ec7 th\u1ed1ng \u0111ã d\u1eebng và \u0111\u01b0\u1ee3c ng\u1eaft ngu\u1ed3n.<\/em><\/strong>\n<\/p>\n\n\tVà cu\u1ed1i cùng c\u1ea7n nh\u1eafc t\u1edbi b\u1ed9 ph\u1eadn k\u1ebft n\u1ed1i truy\u1ec1n thông, cho phép giám sát t\u1eeb xa, c\u0169ng nh\u01b0 \u0111\u01b0a thông tin lên h\u1ec7 th\u1ed1ng SCADA c\u1ee7a nhà máy, m\u1ecdi thông tin \u0111\u01b0\u1ee3c \u0111\u01b0a t\u1edbi k\u1ecbp th\u1eddi và không b\u1ecb b\u1ecf xót, \u0111óng góp m\u1ed9t ph\u1ea7n không nh\u1ecf vào ho\u1ea1t \u0111\u1ed9ng chung c\u1ee7a toàn h\u1ec7 th\u1ed1ng phát \u0111i\u1ec7n toàn nhà máy.\n<\/p>\n
\n\t![\"31713\"](\"http:\/\/mese.vn\/wp-content\/uploads\/2016\/08\/31713-789x523.jpg\")
![\"31715\"](\"http:\/\/mese.vn\/wp-content\/uploads\/2016\/08\/31715-703x523.jpg\")
![\"31716\"](\"http:\/\/mese.vn\/wp-content\/uploads\/2016\/08\/31716-653x523.jpg\")
![\"31719\"](\"http:\/\/mese.vn\/wp-content\/uploads\/2016\/08\/31719-473x523.jpg\")
\n<\/p>\n
\n\t \n<\/p>\n
\n\t![\"Picture7\"](\"http:\/\/mese.vn\/wp-content\/uploads\/2016\/08\/Picture7-1032x523.png\")
\n<\/p>\n
\n\tCác xu\u1ea5t tuy\u1ebfn c\u1ee7a h\u1ec7 th\u1ed1ng DC 220V nhà máy \u0111i\u1ec7n \u0111\u01b0\u1ee3c giám sát b\u1eb1ng EDS460 và các bi\u1ebfn dòng ZCT<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"Gi\u00e1m s\u00e1t \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 t\u00ecm ki\u1ebfm s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t trong h\u1ec7 th\u1ed1ng ngu\u1ed3n DC 220V nh\u00e0 m\u00e1y \u0111i\u1ec7n<\/p>\n","protected":false},"author":120142,"featured_media":1958,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,106,42],"tags":[1033,868,610,632,634,1162,848,852,854,856,1035,495,850,493,74,866,864,862,49],"class_list":["post-1946","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-giai-phap-dien-dau-khi","category-tin-tuc-vi","category-tin-chuyen-nganh","tag-cham-dat-dc","tag-cham-dat-mot-chieu","tag-dc-220v","tag-earth-fault","tag-earth-fault-locating","tag-earth-fault-location-system","tag-eds460","tag-eds461","tag-eds490","tag-eds491","tag-giam-sat-acdc","tag-gian-khoan","tag-irdh575","tag-nha-may-dien","tag-tim-kiem-su-co-cham-dat","tag-tram-bien-ap-110kv","tag-tram-bien-ap-220kv","tag-tram-bien-ap-500kv","tag-trung-tinh-cach-ly"],"yoast_head":"\n
Gi\u00e1m s\u00e1t \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 t\u00ecm ki\u1ebfm s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t cho h\u1ec7 th\u1ed1ng 220VDC nh\u00e0 m\u00e1y \u0111i\u1ec7n, tr\u1ea1m bi\u1ebfn \u00e1p 500kV, 220kV, 110kV. - MES Engineering<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tofu.isoinaction.com\/mesevn\/vi\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gi\u00e1m s\u00e1t \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 t\u00ecm ki\u1ebfm s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t cho h\u1ec7 th\u1ed1ng 220VDC nh\u00e0 m\u00e1y \u0111i\u1ec7n, tr\u1ea1m bi\u1ebfn \u00e1p 500kV, 220kV, 110kV.\" \/>\n<meta property=\"og:description\" content=\"Gi\u00e1m s\u00e1t \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 t\u00ecm ki\u1ebfm s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t trong h\u1ec7 th\u1ed1ng ngu\u1ed3n DC 220V nh\u00e0 m\u00e1y \u0111i\u1ec7n\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tofu.isoinaction.com\/mesevn\/vi\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html\" \/>\n<meta property=\"og:site_name\" content=\"MES Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2016-08-19T18:44:59+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-04-03T07:20:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tofu.isoinaction.com\/mesevn\/wp-content\/uploads\/sites\/194\/2016\/08\/Giai-phap-Dien-01.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1079\" \/>\n\t<meta property=\"og:image:height\" content=\"807\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"mese editor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"mese editor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/vi\\\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/vi\\\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html\"},\"author\":{\"name\":\"mese editor\",\"@id\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/#\\\/schema\\\/person\\\/7bb9d584fc7350cd6be9e5cb311c2caa\"},\"headline\":\"Gi\u00e1m s\u00e1t \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 t\u00ecm ki\u1ebfm s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t cho h\u1ec7 th\u1ed1ng 220VDC nh\u00e0 m\u00e1y \u0111i\u1ec7n, tr\u1ea1m bi\u1ebfn \u00e1p 500kV, 220kV, 110kV.\",\"datePublished\":\"2016-08-19T18:44:59+00:00\",\"dateModified\":\"2018-04-03T07:20:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/vi\\\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html\"},\"wordCount\":1470,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/vi\\\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/wp-content\\\/uploads\\\/sites\\\/194\\\/2016\\\/08\\\/Giai-phap-Dien-01.png\",\"keywords\":[\"ch\u1ea1m \u0111\u1ea5t DC\",\"ch\u1ea1m \u0111\u1ea5t m\u1ed9t chi\u1ec1u\",\"DC 220V\",\"earth fault\",\"earth fault locating\",\"earth fault location system\",\"EDS460\",\"EDS461\",\"EDS490\",\"EDS491\",\"gi\u00e1m s\u00e1t AC\\\/DC\",\"gi\u00e0n khoan\",\"IRDH575\",\"nh\u00e0 m\u00e1y \u0111i\u1ec7n\",\"t\u00ecm ki\u1ebfm s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t\",\"tr\u1ea1m bi\u1ebfn \u00e1p 110kV\",\"tr\u1ea1m bi\u1ebfn \u00e1p 220kV\",\"tr\u1ea1m bi\u1ebfn \u00e1p 500kV\",\"trung t\u00ednh c\u00e1ch ly\"],\"articleSection\":[\"Cho \u0111i\u1ec7n v\u00e0 d\u1ea7u kh\u00ed\",\"Tin t\u1ee9c\",\"Tin t\u1ee9c chuy\u00ean ng\u00e0nh\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/vi\\\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/vi\\\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html\",\"url\":\"https:\\\/\\\/tofu.isoinaction.com\\\/mesevn\\\/vi\\\/dien-tro-cach-dien-su-co-cham-dat-220-vdc-nha-may-dien.html\",\"name\":\"Gi\u00e1m s\u00e1t \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 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