{"id":1154,"date":"2021-08-13T03:58:54","date_gmt":"2021-08-13T03:58:54","guid":{"rendered":"https:\/\/toancau.vn\/?p=1154"},"modified":"2025-04-17T07:04:32","modified_gmt":"2025-04-17T07:04:32","slug":"tiep-dat-chong-set","status":"publish","type":"post","link":"https:\/\/toancau.vn\/en\/blog\/tiep-dat-chong-set.html","title":{"rendered":"LIGHTNING PROTECTION GROUNDING"},"content":{"rendered":"

Lighting protection<\/strong><\/span> l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 th\u1ea7u, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u0169ng nh\u01b0 c\u00e1c h\u1ed9 gia \u0111\u00ecnh quan t\u00e2m. M\u1ed9t h\u1ec7 th\u1ed1ng ch\u1ed1ng s\u00e9t t\u1ed1t ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng t\u1ea3n n\u0103ng l\u01b0\u1ee3ng s\u00e9t v\u00e0o l\u00f2ng \u0111\u1ea5t m\u1ed9t c\u00e1ch nhanh nh\u1ea5t, nh\u1eb1m gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng lan truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng s\u00e9t trong h\u1ec7 th\u1ed1ng l\u00e0m ph\u00e1 h\u1ecfng c\u00e1c thi\u1ebft b\u1ecb.<\/span><\/p>\n

H\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba\u00a0<\/strong><\/span>l\u00e0 b\u1ed9 ph\u1eadn kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng ch\u1ed1ng s\u00e9t n\u00e0o. N\u00f3 \u0111\u1ea3m b\u1ea3o cho vi\u1ec7c d\u1eabn c\u00e1c d\u00f2ng xung s\u00e9t t\u1eeb c\u00e1c thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t xu\u1ed1ng \u0111\u1ea5t v\u00e0 ti\u00eau t\u00e1n n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c xung n\u00e0y. Ti\u1ebfp \u0111\u1ecba \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ch\u1ed1ng s\u00e9t, n\u1ebfu thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t kh\u00f4ng \u0111\u01b0\u1ee3c ti\u1ebfp \u0111\u1ecba t\u1ed1t (\u0111i\u1ec7n tr\u1edf \u0111\u1ea5t qu\u00e1 cao), vi\u1ec7c s\u00e9t \u0111\u00e1nh g\u00e2y h\u1eadu qu\u1ea3 l\u1edbn ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 x\u1ea3y ra. Tu\u1ef3 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u ti\u1ebfp \u0111\u1ecba v\u00e0 \u0111i\u1ec7n tr\u1edf \u0111\u1ea5t c\u1ee7a c\u00f4ng tr\u00ecnh, ch\u00fang ta c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ea5t ch\u1ed1ng s\u00e9t an to\u00e0n.<\/span><\/p>\n

Ti\u1ebfp \u0111\u1ea5t ch\u1ed1ng s\u00e9t<\/strong><\/span> l\u00e0 thao t\u00e1c n\u1ed1i thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t (kim thu l\u00f4i, d\u00e2y thu s\u00e9t, l\u01b0\u1edbi thu s\u00e9t, thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t…) v\u1edbi h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t nh\u1eb1m t\u1ea3n d\u00f2ng \u0111i\u1ec7n s\u00e9t v\u00e0o \u0111\u1ea5t, gi\u1eef cho \u0111i\u1ec7n \u00e1p t\u1ea1i m\u1ecdi \u0111i\u1ec3m (trong khu v\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7) kh\u00f4ng qu\u00e1 l\u1edbn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho c\u00f4ng tr\u00ecnh, thi\u1ebft b\u1ecb v\u00e0 con ng\u01b0\u1eddi khi c\u00f3 s\u00e9t \u0111\u00e1nh.<\/span><\/p>\n

How to implement grounding equipment systems: Grounding equipment includes grounding electrodes and ground wire.<\/span><\/strong><\/p>\n

\u2013 Earthing electrodes include vertical electrodes embedded deep into the soil and horizontal electrodes buried in the soil to a certain depth.<\/span><\/p>\n

\u2013 The ground wire is used to connect the components to the grounding electrodes.<\/span><\/p>\n

\"\"<\/p>\n

When grounding, first take advantage of available natural grounding objects such as water pipes or other metal pipes placed in the ground (except for pipelines of liquid fuel, flammable gas), connections of metal structures of buildings with grounding, and metal sheaths of cables placed in the ground (except for lead cable sheaths, rarely used steel cable sheaths). The resistance of natural earthings is determined by actual measurements or by approximate calculations according to empirical formulas.<\/span><\/p>\n

If the natural grounding cannot ensure the required resistance value of R\u0111, an artificial grounding must be used.<\/span><\/p>\n

Artificial grounding is done with round steel piles, steel pipes, flat steel bars or angle steel 2 - 3m long, driven deep into the ground, their upper ends 0.5 - 0.7 m above the ground to avoid changing the ground. change of Rd according to the weather. Steel piles are welded together by steel bars placed horizontally and are also buried 0.5 - 0.7m deep from the ground.<\/span><\/p>\n

M\u1ed9t\u00a0h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba\u00a0th\u00f4ng th\u01b0\u1eddng bao g\u1ed3m c\u00e1c c\u1ecdc ti\u1ebfp \u0111\u1ea5t ch\u1ed1ng s\u00e9t \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng kim lo\u1ea1i (s\u1eaft, th\u00e9p, th\u00e9p m\u1ea1 k\u1ebdm, th\u00e9p m\u1ea1 \u0111\u1ed3ng, \u0111\u1ed3ng nguy\u00ean ch\u1ea5t\u2026) ch\u00f4n s\u00e2u trong l\u00f2ng \u0111\u1ea5t.<\/strong> Trong \u0111\u00f3, c\u1ecdc th\u00e9p m\u1ea1 \u0111\u1ed3ng ERICO l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn nh\u1edd \u0111\u1ed9 b\u1ec1n cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. C\u1ecdc th\u00e9p m\u1ea1 \u0111\u1ed3ng ERICO c\u00f3 c\u1ea5u t\u1ea1o t\u1eeb th\u00e9p v\u1edbi l\u1edbp m\u1ea1 \u0111\u1ed3ng b\u00ean ngo\u00e0i, v\u1eeba t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n, v\u1eeba gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng l\u00ean c\u1ecdc, gi\u00fap h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i. <\/span>C\u00e1c c\u1ecdc \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi nhau t\u1ea1o th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng l\u01b0\u1edbi ti\u1ebfp \u0111\u1ecba c\u00f3 \u0111i\u1ec7n tr\u1edf ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u ch\u1ed1ng s\u00e9t c\u1ee7a t\u1eebng c\u00f4ng tr\u00ecnh, nh\u00e0 \u1edf.<\/span><\/p>\n

\u0110\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111i\u1ec7n tr\u1edf \u0111\u1ea5t nh\u01b0 mong mu\u1ed1n, n\u00ean s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i ho\u00e1 ch\u1ea5t l\u00e0m gi\u1ea3m tr\u1edf kh\u00e1ng \u0111\u1ea5t (GEM). Ngo\u00e0i ra, \u0111\u1ec3 gi\u1ea3m \u0111i\u1ec7n tr\u1edf cho\u00a0h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba\u00a0v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng l\u00e0m vi\u1ec7c \u1ed5n \u0111\u1ecbnh, c\u1ea7n c\u00f3 s\u1ef1 li\u00ean k\u1ebft ch\u1eafc ch\u1eafn gi\u1eefa d\u00e2y d\u1eabn s\u00e9t v\u1edbi c\u1ecdc ti\u1ebfp \u0111\u1ecba b\u1eb1ng c\u00e1c m\u1ed1i h\u00e0n, \u1ed1c si\u1ebft c\u00e1p.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Ch\u1ed1ng s\u00e9t l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 th\u1ea7u, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u0169ng nh\u01b0 c\u00e1c h\u1ed9 gia \u0111\u00ecnh quan t\u00e2m. M\u1ed9t h\u1ec7 th\u1ed1ng ch\u1ed1ng s\u00e9t t\u1ed1t ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng t\u1ea3n n\u0103ng l\u01b0\u1ee3ng s\u00e9t v\u00e0o l\u00f2ng \u0111\u1ea5t m\u1ed9t c\u00e1ch nhanh nh\u1ea5t, nh\u1eb1m gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng lan truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng s\u00e9t trong h\u1ec7 th\u1ed1ng l\u00e0m […]<\/p>","protected":false},"author":3,"featured_media":2828,"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-1154","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\/1154","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=1154"}],"version-history":[{"count":3,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts\/1154\/revisions"}],"predecessor-version":[{"id":8352,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts\/1154\/revisions\/8352"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/media\/2828"}],"wp:attachment":[{"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/media?parent=1154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/categories?post=1154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/tags?post=1154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}