{"id":1136,"date":"2021-08-13T03:50:34","date_gmt":"2021-08-13T03:50:34","guid":{"rendered":"https:\/\/toancau.vn\/?p=1136"},"modified":"2025-04-17T09:29:55","modified_gmt":"2025-04-17T09:29:55","slug":"vi-tri-lap-dat-chong-set-lan-truyen-tren-duong-nguon-ac","status":"publish","type":"post","link":"https:\/\/toancau.vn\/en\/blog\/vi-tri-lap-dat-chong-set-lan-truyen-tren-duong-nguon-ac.html","title":{"rendered":"LIGHTNING PROTECTION INSTALLATION LOCATION ON AC SUPPLY"},"content":{"rendered":"<div class=\"link\">\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">Table of Contents<\/p><ul class=\"toc_list\"><li><a href=\"#VI_TRI_LAP_DAT_CHONG_SET_LAN_TRUYEN_TREN_DUONG_NGUON_AC\"><span class=\"toc_number toc_depth_1\">1<\/span> LIGHTNING PROTECTION INSTALLATION LOCATION ON AC SUPPLY<\/a><ul><li><a href=\"#I_Set_va_tac_hai_cua_xung_set_lan_truyen\"><span class=\"toc_number toc_depth_2\">1.1<\/span> I\/. Lightning and the effects of lightning impulse propagation.<\/a><\/li><li><a href=\"#II_Vi_tri_lap_dat_thiet_bi_chong_set_lan_truyen\"><span class=\"toc_number toc_depth_2\">1.2<\/span> II\/. Location of installation of surge arresters<\/a><ul><li><a href=\"#_Sau_day_la_5_diem_can_luu_y_khi_xac_dinh_vi_tri_lap_dat_va_lua_chon_thiet_bi_chong_set_de_toi_uu_hoa_su_dau_tu_trong_viec_bao_ve_chong_set\"><span class=\"toc_number toc_depth_3\">1.2.1<\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 Here are 5 points to keep in mind when determining the installation location and selection of surge arresters to optimize your investment in lightning protection:<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/div>\n<h2><span id=\"VI_TRI_LAP_DAT_CHONG_SET_LAN_TRUYEN_TREN_DUONG_NGUON_AC\"><span style=\"color: #000000;\"><strong>LIGHTNING PROTECTION INSTALLATION LOCATION ON AC SUPPLY<\/strong><\/span><\/span><\/h2>\n<\/div>\n<div class=\"noidung\">\n<div class=\"text_body\">\n<h3><span id=\"I_Set_va_tac_hai_cua_xung_set_lan_truyen\"><span style=\"font-size: medium; color: #000000;\"><strong>I\/. Lightning and the effects of lightning impulse propagation.<\/strong><\/span><\/span><\/h3>\n<p><span style=\"font-size: medium; color: #000000;\">\u00a0\u00a0\u00a0<strong>\u00a0<span style=\"color: #0000ff;\">S\u00e9t<\/span><\/strong> l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng thi\u00ean nhi\u00ean th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n v\u00e0o nh\u1eefng m\u00f9a gi\u00f4ng b\u00e3o. Theo \u01b0\u1edbc t\u00ednh c\u1ee7a c\u00e1c nh\u00e0 chuy\u00ean m\u00f4n, tr\u00ean th\u1ebf gi\u1edbi c\u1ee9 m\u1ed7i gi\u00e2y c\u00f3 kho\u1ea3ng 40-50 c\u00fa s\u00e9t \u0111\u00e1nh xu\u1ed1ng m\u1eb7t \u0111\u1ea5t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 1,4 t\u1ef7 tia s\u00e9t xu\u1ea5t hi\u1ec7n m\u1ed7i n\u0103m. S\u00e9t kh\u00f4ng nh\u1eefng g\u00e2y th\u01b0\u01a1ng vong cho con ng\u01b0\u1eddi, m\u00e0 c\u00f2n c\u00f3 th\u1ec3 ph\u00e1 h\u1ee7y c\u00e1c c\u00f4ng tr\u00ecnh, c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n, \u0111i\u1ec7n t\u1eed \u2026 v\u00e0 l\u00e0m gi\u00e1n \u0111o\u1ea1n c\u00f4ng vi\u1ec7c nh\u01b0 ho\u1ea1t \u0111\u1ed9ng h\u00e0ng kh\u00f4ng, ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ng\u00e2n h\u00e0ng, h\u00e0ng h\u1ea3i, c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u00e0i truy\u1ec1n thanh truy\u1ec1n h\u00ecnh, c\u00e1c h\u1ec7 th\u1ed1ng th\u00f4ng tin li\u00ean l\u1ea1c&#8230;<\/span><\/p>\n<p><span style=\"color: #000000;\">As a result, lightning protection device installation is a necessity that must be completed immediately, as is determining the best location to install lightning protection devices for maximum efficiency. A balance must be determined between the installation of Surge device protections (SPDs) for distribution cabinets or \"points of use\" and for sensitive electrical and electronic equipment.<\/span><\/p>\n<h3><span id=\"II_Vi_tri_lap_dat_thiet_bi_chong_set_lan_truyen\"><span style=\"font-size: medium; color: #000000;\"><strong>II\/. Location of installation of surge arresters<\/strong><\/span><\/span><\/h3>\n<h4><span id=\"_Sau_day_la_5_diem_can_luu_y_khi_xac_dinh_vi_tri_lap_dat_va_lua_chon_thiet_bi_chong_set_de_toi_uu_hoa_su_dau_tu_trong_viec_bao_ve_chong_set\"><span style=\"font-size: medium; color: #000000;\">\u00a0<strong>\u00a0\u00a0\u00a0\u00a0 Here are 5 points to keep in mind when determining the installation location and selection of surge arresters to optimize your investment in lightning protection:<\/strong><\/span><\/span><\/h4>\n<p><span style=\"font-size: medium; color: #000000;\">1. First layer of defense (primary lightning protection layer): install a suitable lightning protection device at the building's entrance to protect the equipment. This is usually the device with the greatest surge capacity, as it can be subjected to direct lightning currents. Normally, the required lightning-breaking capacity is 100 kA (8 mA). Primary surge arresters alone are generally suitable for protecting non-perishable electromechanical or electrical equipment such as heaters, lights, and motors.<\/span><\/p>\n<p><span style=\"font-size: medium; color: #000000;\">2. For sensitive electrical and electronic equipment, a second layer of protection (secondary lightning cut-off stage) should be installed to reduce residual voltage (throughput voltage). In general, this applies to the selection of equipment at the branches of the distribution cabinet. The devices at this second stage must also meet the protection requirements of branch circuit equipment from surges generated internally in the circuit by the devices in that circuit, such as switching devices and pulse jammers. This pulse accounts for 70\u201385% of pulses that can be harmful to sensitive electrical and electronic equipment.<\/span><\/p>\n<p><span style=\"font-size: medium; color: #000000;\">\u00b7\u00a0\u00a0\u00a0\u00a0For sensitive electronic equipment requiring high protection. Surge arresters at this stage should use a lightning arrester connected in series in front of the equipment to be protected, including a primary cutoff stage, an LC low pass filter, and a secondary lightning cutoff stage.<\/span><\/p>\n<p><span style=\"font-size: medium; color: #000000;\">3. \u00a0 Circuits with noisy electrical equipment such as inverters and industrial equipment should also be protected to prevent electrical interference (or harmonic interference) back-feeding, causing damage to equipment in other circuits.<\/span><\/p>\n<p><span style=\"font-size: medium; color: #000000;\">4. \u00a0 In cases where sensitive electronic equipment is located more than 30' or 9m \u00a0from the nearest forward SPD surge arrester, an additional protective device should be installed. This device is called a \"point-of-use\" protection device and is installed as close to sensitive electrical and electronic equipment as possible.<\/span><\/p>\n<p><span style=\"font-size: medium; color: #000000;\">5.   The residual voltage of the lightning arrester is the remaining voltage after the lightning arrester is affected by lightning impulses, and surges, this voltage is as tiny as possible.<\/span><\/p>\n<p><span style=\"font-size: medium; color: #000000;\">\u0110i\u1ec7n \u00e1p d\u01b0 # \u0111i\u1ec7n \u00e1p b\u1ea3o v\u1ec7 # \u0111i\u1ec7n \u00e1p th\u00f4ng qua: Voltage protection level # Let-through voltage (U<sub>p<\/sub>).<\/span><\/p>\n<div align=\"center\"><span style=\"font-size: medium;\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-3827\" src=\"https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/vi-tri-lap-dat-chong-set-3-300x148.png\" alt=\"\" width=\"507\" height=\"250\" srcset=\"https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/vi-tri-lap-dat-chong-set-3-300x148.png 300w, https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/vi-tri-lap-dat-chong-set-3-18x9.png 18w, https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/vi-tri-lap-dat-chong-set-3.png 677w\" sizes=\"(max-width: 507px) 100vw, 507px\" \/><br \/>\n<span style=\"color: #000000;\"><em>Location of the installation of surge arresters<\/em><\/span><\/span><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>N\u1ed9i dung b&agrave;i vi\u1ebft1 V\u1eca TR\u00cd L\u1eaeP \u0110\u1eb6T CH\u1ed0NG S\u00c9T LAN TRUY\u1ec0N TR\u00caN \u0110\u01af\u1edcNG NGU\u1ed2N AC1.1 I\/. S\u00e9t v\u00e0 t\u00e1c h\u1ea1i c\u1ee7a xung s\u00e9t lan truy\u1ec1n.1.2 II\/. V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n1.2.1 \u00a0\u00a0\u00a0\u00a0\u00a0 Sau \u0111\u00e2y l\u00e0 5 \u0111i\u1ec3m c\u1ea7n l\u01b0u \u00fd khi x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t v\u00e0 l\u1ef1a [&hellip;]<\/p>","protected":false},"author":3,"featured_media":2836,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"rank_math_lock_modified_date":false,"footnotes":""},"categories":[16,7],"tags":[],"class_list":["post-1136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-tin-tuc-su-kien"],"acf":[],"_links":{"self":[{"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts\/1136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/comments?post=1136"}],"version-history":[{"count":2,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts\/1136\/revisions"}],"predecessor-version":[{"id":8493,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts\/1136\/revisions\/8493"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/media\/2836"}],"wp:attachment":[{"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/media?parent=1136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/categories?post=1136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/tags?post=1136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}