{"id":1189,"date":"2021-08-13T04:08:46","date_gmt":"2021-08-13T04:08:46","guid":{"rendered":"https:\/\/toancau.vn\/?p=1189"},"modified":"2025-04-17T08:55:43","modified_gmt":"2025-04-17T08:55:43","slug":"huong-dan-chon-van-chong-set-an-toan","status":"publish","type":"post","link":"https:\/\/toancau.vn\/en\/blog\/huong-dan-chon-van-chong-set-an-toan.html","title":{"rendered":"A GUIDE FOR THE SELECTION OF SAFETY LIGHTNING PROTECTION VALVES"},"content":{"rendered":"<p><span style=\"color: #000000;\">Vietnam is a country with a hot and humid tropical climate and the highest density of thunderstorms in the world. When lightning strikes over voltage, it will cause problems on the power grid system. Therefore, the lightning protection valve is an indispensable safety protection device for the power grid.<\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-3775 aligncenter\" src=\"https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/chong-set-van-cooper-300x300-1.jpg\" alt=\"\" width=\"310\" height=\"310\" srcset=\"https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/chong-set-van-cooper-300x300-1.jpg 300w, https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/chong-set-van-cooper-300x300-1-150x150.jpg 150w, https:\/\/toancau.vn\/wp-content\/uploads\/2021\/08\/chong-set-van-cooper-300x300-1-12x12.jpg 12w\" sizes=\"(max-width: 310px) 100vw, 310px\" \/><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #0000ff;\"><strong>Van ch\u1ed1ng s\u00e9t<\/strong><\/span> l\u00e0 m\u1ed9t trong nh\u1eefng c\u01a1 c\u1ea5u kh\u00f4ng th\u1ec3 thi\u1ebfu tr\u00ean m\u1ed7i thi\u1ebft b\u1ecb \u00e1p l\u1ef1c. V\u00ec l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng ch\u1ed1ng s\u00e9t n\u00ean vi\u1ec7c ch\u1ecdn l\u1ef1a van ch\u1ed1ng s\u00e9t an to\u00e0n c\u0169ng l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 kh\u00e1 quan tr\u1ecdng; \u0111\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c van an to\u00e0n, c\u1ea7n ch\u00fa \u00fd c\u00e1c \u0111i\u1ec1u sau:<\/span><\/p>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">Table of Contents<\/p><ul class=\"toc_list\"><li><a href=\"#a_Luu_y_den_cac_thong_so_sau_day\"><span class=\"toc_number toc_depth_1\">1<\/span> a\/ Keep the following parameters in mind:\u00a0<\/a><\/li><li><a href=\"#b_Kiem_tra_ky_truoc_khi_dua_thiet_bi_vao_hoat_dong\"><span class=\"toc_number toc_depth_1\">2<\/span> b\/ Check carefully before putting the device into operation.<\/a><\/li><li><a href=\"#c_Trong_qua_trinh_hoat_dong_cua_thiet_bi_can_bao_duong_theo_quy_dinh\"><span class=\"toc_number toc_depth_1\">3<\/span> c\/ During the operation of the equipment, maintenance is required according to regulations.<\/a><\/li><li><a href=\"#d_Kiem_dinh_thiet_bi_theo_dinh_ky_hoac_khi_xay_ra_bat_thuong_viec_kiem_dinh_van_an_toan_bao_gom_cac_buoc_co_ban_sau\"><span class=\"toc_number toc_depth_1\">4<\/span> d\/ Inspect equipment periodically or when an abnormality occurs; Safety valve inspection includes the following basic steps:<\/a><\/li><li><a href=\"#e_Ngoai_ra_van_chong_set_phai_lam_viec_binh_thuong_o_cac_dieu_kien_sau\"><span class=\"toc_number toc_depth_1\">5<\/span> e\/ In addition, the lightning protection valve must work normally under the following conditions:<\/a><\/li><\/ul><\/div>\n<h2><span id=\"a_Luu_y_den_cac_thong_so_sau_day\"><strong><span style=\"color: #000000;\">a\/ Keep the following parameters in mind:\u00a0<\/span><\/strong><\/span><\/h2>\n<p><span style=\"color: #000000;\">\u2013 MCOV (Maximum continuous operating voltage): The maximum continuous operating voltage applied to the lightning protection device<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 TOV (Temporary Overvoltages): The arrester may be subjected to a transient overvoltage.\u00a0<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Energy: the lightning protection device's ability to dissipate energy.\u00a0<\/span><\/p>\n<h2><span id=\"b_Kiem_tra_ky_truoc_khi_dua_thiet_bi_vao_hoat_dong\">b\/ Check carefully before putting the device into operation.<\/span><\/h2>\n<p>&nbsp;<\/p>\n<h2><span id=\"c_Trong_qua_trinh_hoat_dong_cua_thiet_bi_can_bao_duong_theo_quy_dinh\">c\/ During the operation of the equipment, maintenance is required according to regulations.<\/span><\/h2>\n<p>&nbsp;<\/p>\n<h2><span id=\"d_Kiem_dinh_thiet_bi_theo_dinh_ky_hoac_khi_xay_ra_bat_thuong_viec_kiem_dinh_van_an_toan_bao_gom_cac_buoc_co_ban_sau\">d\/ Inspect equipment periodically or when an abnormality occurs; Safety valve inspection includes the following basic steps:<\/span><\/h2>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000;\">\u2013 Visually check the technical condition of the valve.<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Use gas (compressed air, nitrogen) or liquid (water, specialized oil) to increase pressure to check the operating pressure and the closing pressure of the valve.<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Check valve tightness; Surge protection valves are divided into 2 types, suitable for different options<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Type 1 is for power distribution stations.<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Type 2 for intermediate power stations<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span id=\"e_Ngoai_ra_van_chong_set_phai_lam_viec_binh_thuong_o_cac_dieu_kien_sau\">e\/ In addition, the lightning protection valve must work normally under the following conditions:<\/span><\/h2>\n<p><span style=\"color: #000000;\">\u2013 The temperature of the environment where the magnetic lightning valve is installed and used is minus 10<sup>o<\/sup>C \u0111\u1ebfn 40<sup>o<\/sup>C<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 The height of the place where the lightning protection valve is used must not exceed 1000 m above sea level.<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 The power frequency voltage to earth, at the place where lightning protection valve is used, is not allowed to be greater than the maximum allowable voltage of the lightning protection valve.<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 The lightning protection valve must have an explosion-proof structure to protect the valve from exploding when the pressure inside the valve exceeds the allowable pressure.<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 The lightning protection valve must be airtight to prevent moisture and water from entering.\u00a0<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Metal parts of lightning arresters must be protected against atmospheric corrosion<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 The lightning protection valve must have enough parts for assembly and connection to ensure the fixing of the lightning protection valve when installing and using it, and ensure good electrical contact and grounding.<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Lightning protection valves must be packed and fixed firmly to ensure that the valve is not damaged during transportation. If the packaging is more carefully designed, it can clearly state the type of fragile product or draw signs to preserve fragile goods.\u00a0<\/span><br \/>\n<span style=\"color: #000000;\">\u2013 Lightning protection valve must have a certificate and the technical documents of the valve must clearly state the technical parameters of the valve, the valve preservation mode.<\/span><\/p>\n<blockquote><p><em><strong><span style=\"color: #000000;\">Carrying out the steps to test the safety valve requires specialized equipment and a team of well-trained technicians and specialists to ensure the lightning protection system works best in these conditions. severe weather.<\/span><\/strong><\/em><\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7t Nam l\u00e0 n\u01b0\u1edbc c\u00f3 kh\u00ed h\u1eadu nhi\u1ec7t \u0111\u1edbi n\u00f3ng \u1ea9m v\u00e0 c\u00f3 m\u1eadt \u0111\u1ed9 gi\u00f4ng s\u00e9t cao tr\u00ean th\u1ebf gi\u1edbi. Khi s\u00e9t \u0111\u00e1nh qu\u00e1 \u0111i\u1ec7n \u00e1p s\u1ebd g\u00e2y ra c\u00e1c s\u1ef1 c\u1ed1 tr\u00ean h\u1ec7 th\u1ed1ng l\u01b0\u1edbi \u0111i\u1ec7n. V\u00ec th\u1ebf van ch\u1ed1ng s\u00e9t l\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 an to\u00e0n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a l\u01b0\u1edbi [&hellip;]<\/p>","protected":false},"author":3,"featured_media":2807,"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-1189","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\/1189","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=1189"}],"version-history":[{"count":3,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts\/1189\/revisions"}],"predecessor-version":[{"id":8467,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/posts\/1189\/revisions\/8467"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/media\/2807"}],"wp:attachment":[{"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/media?parent=1189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/categories?post=1189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toancau.vn\/en\/wp-json\/wp\/v2\/tags?post=1189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}