{"id":2163,"date":"2025-08-22T15:08:56","date_gmt":"2025-08-22T07:08:56","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=2163"},"modified":"2025-08-22T15:35:44","modified_gmt":"2025-08-22T07:35:44","slug":"types-of-surge-protection-devices","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/ar\/blog\/types-of-surge-protection-devices\/","title":{"rendered":"\u0623\u0646\u0648\u0627\u0639 \u0645\u062e\u062a\u0644\u0641\u0629 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 (SPD)"},"content":{"rendered":"<h2 data-start=\"384\" data-end=\"404\">1. \u0645\u0642\u062f\u0645\u0629<\/h2>\r\n<p data-start=\"405\" data-end=\"685\">\u062a\u0639\u062a\u0628\u0631 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0628\u0645\u062b\u0627\u0628\u0629 \u0642\u062a\u0644\u0629 \u0635\u0627\u0645\u062a\u0629 \u0641\u064a \u0627\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0627\u0644\u062d\u062f\u064a\u062b\u0629. \u0645\u0646 \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a\u0627\u062a \u0627\u0644\u0645\u0646\u0632\u0644\u064a\u0629 \u0625\u0644\u0649 \u0627\u0644\u0623\u062a\u0645\u062a\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0648\u0645\u062d\u0637\u0627\u062a \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0634\u0645\u0633\u064a\u0629\u060c \u062d\u062a\u0649 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0632\u0627\u0626\u062f \u0627\u0644\u0639\u0627\u0628\u0631 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062a\u0633\u0628\u0628 \u0641\u064a \u062a\u0648\u0642\u0641 \u0627\u0644\u0639\u0645\u0644 \u0623\u0648 \u0625\u062c\u0631\u0627\u0621 \u0625\u0635\u0644\u0627\u062d\u0627\u062a \u0645\u0643\u0644\u0641\u0629 \u0623\u0648 \u0641\u0634\u0644 \u0627\u0644\u0645\u0639\u062f\u0627\u062a. \u0627\u0644\u062d\u0644\u061f <strong data-start=\"647\" data-end=\"683\"><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.britecelectric.com\/ar\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\">\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 (SPDs)<\/a><\/span>.<\/strong><\/p>\r\n<p data-start=\"687\" data-end=\"952\">\u0641\u064a \u0647\u0630\u0627 \u0627\u0644\u062f\u0644\u064a\u0644\u060c \u0633\u0646\u0642\u0648\u0645 \u0628\u062a\u0642\u0633\u064a\u0645 \u0627\u0644\u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629 \u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u0627\u0646\u062f\u0641\u0627\u0639 \u0627\u0644\u0645\u0641\u0627\u062c\u0626\u060c \u0648\u0634\u0631\u062d \u0643\u064a\u0641\u064a\u0629 \u0639\u0645\u0644\u0647\u0627\u060c \u0648\u0645\u0642\u0627\u0631\u0646\u0629 \u062a\u0637\u0628\u064a\u0642\u0627\u062a\u0647\u0627. \u0641\u064a \u0627\u0644\u0646\u0647\u0627\u064a\u0629\u060c \u0633\u062a\u0639\u0631\u0641 \u0628\u0627\u0644\u0636\u0628\u0637 \u0623\u0646\u0648\u0627\u0639 SPD \u0627\u0644\u062a\u064a \u062a\u0646\u0627\u0633\u0628 \u0646\u0638\u0627\u0645\u0643 - \u0633\u0648\u0627\u0621 \u0643\u0627\u0646 \u0645\u0646\u0632\u0644\u064b\u0627 \u0623\u0648 \u0645\u0631\u0643\u0632 \u0628\u064a\u0627\u0646\u0627\u062a \u0623\u0648 \u062a\u0631\u0643\u064a\u0628\u064b\u0627 \u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u064b\u0627.<\/p>\r\n\r\n<h2 data-start=\"959\" data-end=\"1001\">2. \u0645\u0627 \u0647\u064a \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631\u061f<\/h2>\r\n<p data-start=\"1002\" data-end=\"1283\">A <a href=\"https:\/\/www.britecelectric.com\/ar\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\"><strong data-start=\"1004\" data-end=\"1037\">\u062c\u0647\u0627\u0632 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0637\u0641\u0631\u0629 (SPD)<\/strong> <\/span><\/a>\u0647\u0648 \u0645\u0643\u0648\u0646 \u0623\u0645\u0627\u0646 \u0645\u062b\u0628\u062a \u0641\u064a \u0627\u0644\u0646\u0638\u0627\u0645 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0644\u0644\u062d\u062f \u0645\u0646 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0632\u0627\u0626\u062f \u0627\u0644\u0639\u0627\u0628\u0631 \u0627\u0644\u0646\u0627\u062a\u062c \u0639\u0646 \u0627\u0644\u0635\u0648\u0627\u0639\u0642 \u0623\u0648 \u0623\u062d\u062f\u0627\u062b \u0627\u0644\u062a\u0628\u062f\u064a\u0644 \u0623\u0648 \u0627\u0636\u0637\u0631\u0627\u0628\u0627\u062a \u0627\u0644\u0645\u0631\u0627\u0641\u0642. \u0625\u0646\u0647 \u064a\u0639\u0645\u0644 \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0645\u0641\u0627\u062c\u0626\u0629 \u0628\u0623\u0645\u0627\u0646 \u0625\u0644\u0649 \u0627\u0644\u0623\u0631\u0636\u060c \u0648\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0645\u062a\u0635\u0644\u0629.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\">\u0641\u0643\u0631 \u0641\u064a SPD \u0643\u0635\u0645\u0627\u0645 \u0644\u062a\u062d\u0631\u064a\u0631 \u0627\u0644\u0636\u063a\u0637: \u0641\u0647\u0648 \u0644\u0627 \u064a\u0645\u0646\u0639 \u062d\u062f\u0648\u062b \u0627\u0644\u0627\u0631\u062a\u0641\u0627\u0639\u060c \u0648\u0644\u0643\u0646\u0647 \u064a\u0648\u062c\u0647 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0628\u0639\u064a\u062f\u064b\u0627 \u0639\u0646 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a\u0629 \u0627\u0644\u062d\u0633\u0627\u0633\u0629.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\"><a href=\"https:\/\/www.britecelectric.com\/ar\/product-category\/ac-power-surge-protection\/\" rel=\"attachment wp-att-2160\"><img class=\"alignnone wp-image-2160\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/BR-20-4P-1Type-2-Surge-Protection-Device.jpg-1024x1024.webp\" alt=\"\u0623\u0646\u0648\u0627\u0639 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u0637\u0641\u0631\u0629\" width=\"705\" height=\"705\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"1447\" data-end=\"1486\">3. \u0643\u064a\u0641 \u062a\u0639\u0645\u0644 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631\u061f<\/h2>\r\n<p data-start=\"1487\" data-end=\"1734\">\u062a\u0639\u062a\u0645\u062f \u0623\u062c\u0647\u0632\u0629 SPD \u0639\u0644\u0649 \u0645\u0643\u0648\u0646\u0627\u062a \u0645\u062b\u0644 \u0645\u0643\u062b\u0641\u0627\u062a \u0627\u0644\u0623\u0643\u0633\u064a\u062f \u0627\u0644\u0645\u0639\u062f\u0646\u064a (MOVs)\u060c \u0648\u0623\u0646\u0627\u0628\u064a\u0628 \u062a\u0641\u0631\u064a\u063a \u0627\u0644\u063a\u0627\u0632 (GDTs)\u060c \u0648\u0641\u062c\u0648\u0627\u062a \u0627\u0644\u0634\u0631\u0627\u0631\u0629. \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u062c\u0647\u062f \u0639\u062a\u0628\u0629 \u0622\u0645\u0646\u0629 (Uc)\u060c \u064a\u062a\u062d\u0648\u0644 SPD \u0625\u0644\u0649 \u0648\u0636\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u060c \u0645\u0645\u0627 \u064a\u062b\u0628\u062a \u0627\u0644\u062a\u062f\u0641\u0642 \u0625\u0644\u0649 \u062c\u0647\u062f \u0645\u062a\u0628\u0642\u064a \u0623\u0642\u0644 (\u0623\u0639\u0644\u0649).<\/p>\r\n<p data-start=\"1736\" data-end=\"1767\">\u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0644\u0641\u0647\u0645:<\/p>\r\n\r\n<ul data-start=\"1768\" data-end=\"2141\">\r\n \t<li data-start=\"1768\" data-end=\"1853\">\r\n<p data-start=\"1770\" data-end=\"1853\"><strong data-start=\"1770\" data-end=\"1816\">Uc (\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062c\u0647\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u0633\u062a\u0645\u0631):<\/strong> \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0637\u0628\u064a\u0639\u064a \u0627\u0644\u0630\u064a \u064a\u0645\u0643\u0646 \u0644\u0640 SPD \u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639\u0647.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1854\" data-end=\"1945\">\r\n<p data-start=\"1856\" data-end=\"1945\"><strong data-start=\"1856\" data-end=\"1890\">\u0623\u0639\u0644\u0649 (\u0645\u0633\u062a\u0648\u0649 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062c\u0647\u062f):<\/strong> \u0644\u0642\u0637 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0630\u064a \u0633\u0648\u0641 \u201c\u062a\u0631\u0627\u0647\u201d \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629.\u201d<\/p>\r\n<\/li>\r\n \t<li data-start=\"1946\" data-end=\"2048\">\r\n<p data-start=\"1948\" data-end=\"2048\"><strong data-start=\"1948\" data-end=\"2000\">In \/ Imax (\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u0627\u0633\u0645\u064a \u0648\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649):<\/strong> \u0645\u0642\u062f\u0627\u0631 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0630\u064a \u064a\u0645\u0643\u0646 \u0644\u0644\u062c\u0647\u0627\u0632 \u0627\u0633\u062a\u064a\u0639\u0627\u0628\u0647.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2049\" data-end=\"2141\">\r\n<p data-start=\"2051\" data-end=\"2141\"><strong data-start=\"2051\" data-end=\"2078\">Iimp (\u062a\u064a\u0627\u0631 \u0627\u0644\u062f\u0627\u0641\u0639):<\/strong> \u062e\u0627\u0635 \u0628\u0627\u0644\u0646\u0648\u0639 1\u060c \u0627\u0644\u0630\u064a \u064a\u0645\u062b\u0644 \u0627\u0644\u0623\u0634\u0643\u0627\u0644 \u0627\u0644\u0645\u0648\u062c\u064a\u0629 \u0644\u0636\u0631\u0628\u0629 \u0627\u0644\u0628\u0631\u0642.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<a href=\"https:\/\/www.britecelectric.com\/ar\/attachment\/spd-install\/\" rel=\"attachment wp-att-2159\"><img class=\"alignnone size-full wp-image-2159\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPD-install.jpg\" alt=\"\" width=\"745\" height=\"609\" \/><\/a>\r\n<h2 data-start=\"486\" data-end=\"527\">4. \u0623\u0646\u0648\u0627\u0639 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631<\/h2>\r\n<p data-start=\"529\" data-end=\"821\">\u0625\u0646 \u0641\u0647\u0645 \u0623\u0646\u0648\u0627\u0639 SPD \u0647\u0648 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0630\u0627\u062a \u0627\u0644\u0637\u0628\u0642\u0627\u062a. \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062f\u0648\u0644\u064a\u0629 \u0645\u062b\u0644 <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"639\" data-end=\"660\">\u0625\u064a\u0643 61643-11 (\u0623\u0643)<\/strong><\/a>, <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/26931\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"662\" data-end=\"686\">IEC 61643-31 (\u062a\u064a\u0627\u0631 \u0645\u0633\u062a\u0645\u0631\/\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a)<\/strong><\/a>, \u060c \u0648 <a href=\"https:\/\/www.nemasurge.org\/ul-1449-transient-voltage-surge-suppressors\/\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"692\" data-end=\"719\">\u064a\u0648 \u0625\u0644 1449 (\u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629)<\/strong> <\/a>\u062a\u062d\u062f\u064a\u062f \u0641\u0626\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u0623\u0634\u0643\u0627\u0644 \u0645\u0648\u062c\u064a\u0629 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u060c \u0648\u0642\u062f\u0631\u0629 \u0627\u0644\u0637\u0627\u0642\u0629\u060c \u0648\u0645\u0648\u0642\u0639 \u0627\u0644\u062a\u062b\u0628\u064a\u062a.<\/p>\r\n<p data-start=\"823\" data-end=\"975\">\u0641\u064a\u0645\u0627 \u064a\u0644\u064a\u060c \u0646\u0642\u0648\u0645 \u0628\u062a\u0641\u0635\u064a\u0644 \u0627\u0644\u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 (SPD) \u0627\u0644\u062a\u064a \u0633\u062a\u0648\u0627\u062c\u0647\u0647\u0627\u060c \u0645\u0639 \u0623\u062f\u0648\u0627\u0631\u0647\u0627 \u0627\u0644\u0641\u0646\u064a\u0629 \u0648\u0625\u0631\u0634\u0627\u062f\u0627\u062a \u0627\u0644\u062a\u0637\u0628\u064a\u0642.<\/p>\r\n\r\n<h3 data-start=\"982\" data-end=\"1038\">4.1 \u0623\u062c\u0647\u0632\u0629 SPD \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 1 (IEC 61643-11\u060c \u0627\u0644\u0641\u0626\u0629 \u0627\u0644\u0623\u0648\u0644\u0649\u060c 10\/350 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629)<\/h3>\r\n<ul data-start=\"1039\" data-end=\"1975\">\r\n \t<li data-start=\"1039\" data-end=\"1201\">\r\n<p data-start=\"1041\" data-end=\"1201\"><strong data-start=\"1041\" data-end=\"1056\">\u062a\u0639\u0631\u064a\u0641:<\/strong> \u0645\u0635\u0645\u0645\u0629 \u0644\u062a\u0641\u0631\u064a\u063a \u062a\u064a\u0627\u0631 \u0627\u0644\u0628\u0631\u0642 \u0627\u0644\u062c\u0632\u0626\u064a. \u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631\u0647 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0634\u0643\u0644 \u0645\u0648\u062c\u0629 \u0646\u0628\u0636\u064a\u0629 \u062a\u0628\u0644\u063a 10\/350 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629 (Iimp) \u062a\u0645\u062b\u0644 \u0636\u0631\u0628\u0629 \u0635\u0627\u0639\u0642\u0629 \u0645\u0628\u0627\u0634\u0631\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1202\" data-end=\"1383\">\r\n<p data-start=\"1204\" data-end=\"1383\"><strong data-start=\"1204\" data-end=\"1227\">\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a:<\/strong> \u0645\u062f\u062e\u0644 \u0627\u0644\u062e\u062f\u0645\u0629\u060c \u0639\u0627\u062f\u0629 \u0645\u0627 \u064a\u0643\u0648\u0646 \u0623\u0639\u0644\u0649 \u0644\u0648\u062d\u0629 \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629. \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u064a\u0633\u062a\u062e\u062f\u0645 \u0641\u064a \u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u0645\u062c\u0647\u0632\u0629 \u0628\u0646\u0638\u0627\u0645 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u0635\u0648\u0627\u0639\u0642 \u0627\u0644\u062e\u0627\u0631\u062c\u064a (LPS).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1384\" data-end=\"1658\">\r\n<p data-start=\"1386\" data-end=\"1407\"><strong data-start=\"1386\" data-end=\"1405\">\u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629:<\/strong><\/p>\r\n\r\n<ul data-start=\"1410\" data-end=\"1658\">\r\n \t<li data-start=\"1410\" data-end=\"1475\">\r\n<p data-start=\"1412\" data-end=\"1475\">Iimp (\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0646\u0628\u0636\u064a): \u0642\u062f\u0631\u0629 \u062a\u064a\u0627\u0631 \u0627\u0644\u0628\u0631\u0642 \u0627\u0644\u0645\u0642\u062f\u0631\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1478\" data-end=\"1571\">\r\n<p data-start=\"1480\" data-end=\"1571\">Uc (\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062c\u0647\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u0633\u062a\u0645\u0631): \u064a\u0636\u0645\u0646 \u0639\u062f\u0645 \u062d\u062f\u0648\u062b \u0623\u064a \u0636\u0631\u0631 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0639\u0627\u062f\u064a.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1574\" data-end=\"1658\">\r\n<p data-start=\"1576\" data-end=\"1658\">\u0623\u0639\u0644\u0649 (\u0645\u0633\u062a\u0648\u0649 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062c\u0647\u062f): \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0628\u0642\u064a \u0627\u0644\u0630\u064a \u062a\u0631\u0627\u0647 \u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0635\u0628.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1659\" data-end=\"1731\">\r\n<p data-start=\"1661\" data-end=\"1731\"><strong data-start=\"1661\" data-end=\"1681\">\u0627\u0644\u062a\u0643\u0646\u0648\u0644\u0648\u062c\u064a\u0627 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629:<\/strong> \u0641\u062c\u0648\u0627\u062a \u0634\u0631\u0627\u0631\u0629\u060c \u0623\u0648 MOVs \u0644\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u0634\u0627\u0642\u0629\u060c \u0623\u0648 \u062a\u0635\u0645\u064a\u0645\u0627\u062a \u0647\u062c\u064a\u0646\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1732\" data-end=\"1862\">\r\n<p data-start=\"1734\" data-end=\"1750\"><strong data-start=\"1734\" data-end=\"1748\">\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645:<\/strong><\/p>\r\n\r\n<ul data-start=\"1753\" data-end=\"1862\">\r\n \t<li data-start=\"1753\" data-end=\"1806\">\r\n<p data-start=\"1755\" data-end=\"1806\">\u0627\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0648\u0623\u0628\u0631\u0627\u062c \u0627\u0644\u0627\u062a\u0635\u0627\u0644\u0627\u062a \u0648\u0627\u0644\u0645\u0633\u062a\u0634\u0641\u064a\u0627\u062a.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1809\" data-end=\"1862\">\r\n<p data-start=\"1811\" data-end=\"1862\">\u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u0634\u0627\u0647\u0642\u0629 \u0641\u064a \u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0630\u0627\u062a \u0643\u062b\u0627\u0641\u0629 \u0627\u0644\u0628\u0631\u0642 \u0627\u0644\u0639\u0627\u0644\u064a\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1863\" data-end=\"1975\">\r\n<p data-start=\"1865\" data-end=\"1975\"><strong data-start=\"1865\" data-end=\"1877\">\u0645\u062b\u0627\u0644:<\/strong> \u0633\u064a\u062a\u0637\u0644\u0628 \u0627\u0644\u0645\u0635\u0646\u0639 \u0627\u0644\u0645\u0632\u0648\u062f \u0628\u0642\u0636\u0628\u0627\u0646 \u0627\u0644\u0635\u0648\u0627\u0639\u0642 \u0639\u0644\u0649 \u0627\u0644\u0633\u0637\u062d \u0648\u062c\u0648\u062f \u0623\u062c\u0647\u0632\u0629 \u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u0635\u0648\u0627\u0639\u0642 \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 1 \u0639\u0646\u062f \u0645\u0635\u062f\u0631 \u0627\u0644\u0625\u0645\u062f\u0627\u062f \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0627\u0644\u0648\u0627\u0631\u062f.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1982\" data-end=\"2037\">4.2 \u0623\u062c\u0647\u0632\u0629 SPD \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 2 (IEC 61643-11\u060c \u0627\u0644\u0641\u0626\u0629 II\u060c 8\/20 s)<\/h3>\r\n<ul data-start=\"2038\" data-end=\"2824\">\r\n \t<li data-start=\"2038\" data-end=\"2167\">\r\n<p data-start=\"2040\" data-end=\"2167\"><strong data-start=\"2040\" data-end=\"2055\">\u062a\u0639\u0631\u064a\u0641:<\/strong> \u064a\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u062a\u0628\u062f\u064a\u0644 \u0627\u0644\u0639\u0648\u0627\u0635\u0641 \u0648\u062a\u0623\u062b\u064a\u0631\u0627\u062a \u0627\u0644\u0628\u0631\u0642 \u063a\u064a\u0631 \u0627\u0644\u0645\u0628\u0627\u0634\u0631\u0629. \u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631\u0647 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0634\u0643\u0644 \u0645\u0648\u062c\u0629 \u062a\u064a\u0627\u0631 8\/20 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629 (In\u060c Imax).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2168\" data-end=\"2248\">\r\n<p data-start=\"2170\" data-end=\"2248\"><strong data-start=\"2170\" data-end=\"2193\">\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a:<\/strong> \u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0623\u0648 \u0627\u0644\u0641\u0631\u0639\u064a\u0629 \u062f\u0627\u062e\u0644 \u0627\u0644\u0645\u0646\u0634\u0623\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2249\" data-end=\"2496\">\r\n<p data-start=\"2251\" data-end=\"2272\"><strong data-start=\"2251\" data-end=\"2270\">\u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629:<\/strong><\/p>\r\n\r\n<ul data-start=\"2275\" data-end=\"2496\">\r\n \t<li data-start=\"2275\" data-end=\"2347\">\r\n<p data-start=\"2277\" data-end=\"2347\">\u0641\u064a (\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u0627\u0633\u0645\u064a): \u0627\u0644\u062a\u062d\u0645\u0644 \u062a\u062d\u062a \u0627\u0644\u0639\u0648\u0627\u0635\u0641 \u0627\u0644\u0645\u062a\u0639\u062f\u062f\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2350\" data-end=\"2417\">\r\n<p data-start=\"2352\" data-end=\"2417\">Imax (\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0641\u0631\u064a\u063a): \u0623\u0642\u0635\u0649 \u0642\u062f\u0631\u0629 \u0639\u0644\u0649 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2420\" data-end=\"2496\">\r\n<p data-start=\"2422\" data-end=\"2496\">\u0644\u0623\u0639\u0644\u0649: \u064a\u062c\u0628 \u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0645\u0639 \u0643\u0644 \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 \u0627\u0644\u0623\u0648\u0644 \u0648\u0627\u0644\u0646\u0648\u0639 \u0627\u0644\u062b\u0627\u0644\u062b.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2497\" data-end=\"2578\">\r\n<p data-start=\"2499\" data-end=\"2578\"><strong data-start=\"2499\" data-end=\"2519\">\u0627\u0644\u062a\u0643\u0646\u0648\u0644\u0648\u062c\u064a\u0627 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629:<\/strong> \u0627\u0644\u0648\u062d\u062f\u0627\u062a \u0627\u0644\u0645\u0639\u062a\u0645\u062f\u0629 \u0639\u0644\u0649 MOV\u060c \u0648\u0627\u0644\u062a\u064a \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u062a\u0643\u0648\u0646 \u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u062a\u0648\u0635\u064a\u0644 \u0644\u0633\u0647\u0648\u0644\u0629 \u0627\u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2579\" data-end=\"2716\">\r\n<p data-start=\"2581\" data-end=\"2597\"><strong data-start=\"2581\" data-end=\"2595\">\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645:<\/strong><\/p>\r\n\r\n<ul data-start=\"2600\" data-end=\"2716\">\r\n \t<li data-start=\"2600\" data-end=\"2655\">\r\n<p data-start=\"2602\" data-end=\"2655\">\u0627\u0644\u0645\u0646\u0627\u0632\u0644 \u0627\u0644\u0633\u0643\u0646\u064a\u0629 \u0648\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u0645\u0643\u0627\u062a\u0628 \u0648\u0645\u062d\u0644\u0627\u062a \u0627\u0644\u0628\u064a\u0639 \u0628\u0627\u0644\u062a\u062c\u0632\u0626\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2658\" data-end=\"2716\">\r\n<p data-start=\"2660\" data-end=\"2716\">\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0641\u064a \u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0630\u0627\u062a \u062e\u0637\u0631 \u0627\u0644\u0637\u0641\u0631\u0629 \u0627\u0644\u0645\u0639\u062a\u062f\u0644\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2717\" data-end=\"2824\">\r\n<p data-start=\"2719\" data-end=\"2824\"><strong data-start=\"2719\" data-end=\"2731\">\u0645\u062b\u0627\u0644:<\/strong> \u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u064a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0645\u0643\u062a\u0628 \u0627\u0644\u0635\u063a\u064a\u0631 \u0627\u0644\u0630\u064a \u0644\u0627 \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 LPS \u062e\u0627\u0631\u062c\u064a \u0648\u062d\u062f\u0627\u062a SPD \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 2 \u0641\u064a \u0627\u0644\u0644\u0648\u062d\u0629 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\u0647\u0644 \u062a\u0631\u064a\u062f \u062a\u0641\u0635\u064a\u0644\u0627\u064b\u061f \u0627\u0642\u0631\u0623 \u062f\u0644\u064a\u0644\u0646\u0627 \u0627\u0644\u0643\u0627\u0645\u0644: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1021\" data-end=\"1147\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/ar\/blog\/what-is-a-type-2-surge-protection-device\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1023\" data-end=\"1145\">\u0645\u0627 \u0647\u0648 \u062c\u0647\u0627\u0632 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 2\u061f<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"2831\" data-end=\"2890\">4.3 \u0623\u062c\u0647\u0632\u0629 SPD \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 3 (IEC 61643-11\u060c \u0627\u0644\u0641\u0626\u0629 III\u060c \u0645\u0648\u062c\u0629 \u0645\u062c\u0645\u0639\u0629)<\/h3>\r\n<ul data-start=\"2891\" data-end=\"3555\">\r\n \t<li data-start=\"2891\" data-end=\"3022\">\r\n<p data-start=\"2893\" data-end=\"3022\"><strong data-start=\"2893\" data-end=\"2908\">\u062a\u0639\u0631\u064a\u0641:<\/strong> \u062d\u0645\u0627\u064a\u0629 \u062f\u0642\u064a\u0642\u0629 \u0644\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0637\u0631\u0641\u064a\u0629. \u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631\u0647 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0648\u062c\u0629 \u0645\u0631\u0643\u0628\u0629 (\u062c\u0647\u062f 1.2\/50 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629 + \u062a\u064a\u0627\u0631 8\/20 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3023\" data-end=\"3126\">\r\n<p data-start=\"3025\" data-end=\"3126\"><strong data-start=\"3025\" data-end=\"3048\">\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a:<\/strong> \u0623\u0642\u0631\u0628 \u0645\u0627 \u064a\u0645\u0643\u0646 \u0625\u0644\u0649 \u0627\u0644\u062c\u0647\u0627\u0632 \u0627\u0644\u0645\u062d\u0645\u064a (\u0645\u0646\u0641\u0630 \u0627\u0644\u0645\u0642\u0628\u0633\u060c \u0645\u062f\u062e\u0644 \u0627\u0644\u062c\u0647\u0627\u0632).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3127\" data-end=\"3273\">\r\n<p data-start=\"3129\" data-end=\"3150\"><strong data-start=\"3129\" data-end=\"3148\">\u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629:<\/strong><\/p>\r\n\r\n<ul data-start=\"3153\" data-end=\"3273\">\r\n \t<li data-start=\"3153\" data-end=\"3216\">\r\n<p data-start=\"3155\" data-end=\"3216\">\u0644\u0623\u0639\u0644\u0649: \u0645\u0633\u062a\u0648\u0649 \u062a\u062b\u0628\u064a\u062a \u0645\u0646\u062e\u0641\u0636 \u062c\u062f\u064b\u0627 \u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u062d\u0633\u0627\u0633\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3219\" data-end=\"3273\">\r\n<p data-start=\"3221\" data-end=\"3273\">\u064a\u062c\u0628 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0628\u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0645\u0639 \u0627\u0644\u0646\u0648\u0639 2 \u0645\u0646 \u0627\u0644\u0645\u0646\u0628\u0639.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3274\" data-end=\"3348\">\r\n<p data-start=\"3276\" data-end=\"3348\"><strong data-start=\"3276\" data-end=\"3296\">\u0627\u0644\u062a\u0643\u0646\u0648\u0644\u0648\u062c\u064a\u0627 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629:<\/strong> \u062a\u0645 \u062f\u0645\u062c MOVs \u0645\u0639 \u0627\u0644\u0645\u0631\u0634\u062d\u0627\u062a \u0644\u0645\u0632\u064a\u062f \u0645\u0646 \u0627\u0644\u062a\u0648\u0647\u064a\u0646.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3349\" data-end=\"3435\">\r\n<p data-start=\"3351\" data-end=\"3367\"><strong data-start=\"3351\" data-end=\"3365\">\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645:<\/strong><\/p>\r\n\r\n<ul data-start=\"3370\" data-end=\"3435\">\r\n \t<li data-start=\"3370\" data-end=\"3435\">\r\n<p data-start=\"3372\" data-end=\"3435\">\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0643\u0645\u0628\u064a\u0648\u062a\u0631 \u0648\u0645\u062d\u0631\u0643\u0627\u062a LED \u0648\u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a\u0627\u062a \u0627\u0644\u0637\u0628\u064a\u0629 \u0648\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062a\u062d\u0643\u0645.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3436\" data-end=\"3555\">\r\n<p data-start=\"3438\" data-end=\"3555\"><strong data-start=\"3438\" data-end=\"3450\">\u0645\u062b\u0627\u0644:<\/strong> \u064a\u062a\u0637\u0644\u0628 \u062c\u0647\u0627\u0632 \u0627\u0644\u062a\u0635\u0648\u064a\u0631 \u0628\u0627\u0644\u0631\u0646\u064a\u0646 \u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a \u0641\u064a \u0627\u0644\u0645\u0633\u062a\u0634\u0641\u0649 \u0648\u062c\u0648\u062f \u0646\u0648\u0639 3 SPD \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0627\u0644\u062c\u0647\u0627\u0632\u060c \u0648\u064a\u0639\u0645\u0644 \u062c\u0646\u0628\u064b\u0627 \u0625\u0644\u0649 \u062c\u0646\u0628 \u0645\u0639 \u0627\u0644\u0646\u0648\u0639 2.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0627\u0644\u0645\u0632\u064a\u062f \u0641\u064a \u0645\u0642\u0627\u0644\u062a\u0646\u0627 \u0627\u0644\u0645\u062e\u0635\u0635\u0629: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1474\" data-end=\"1584\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/ar\/blog\/what-is-a-type-3-surge-protector\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1476\" data-end=\"1582\">\u0645\u0627 \u0647\u0648 \u062d\u0627\u0645\u064a \u0627\u0644\u0637\u0641\u0631\u0629 \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 3\u061f<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"3562\" data-end=\"3594\">4.4 \u0645\u062c\u0645\u0648\u0639\u0629 SPDs T1+T2<\/h3>\r\n<ul data-start=\"3595\" data-end=\"4178\">\r\n \t<li data-start=\"3595\" data-end=\"3710\">\r\n<p data-start=\"3597\" data-end=\"3710\"><strong data-start=\"3597\" data-end=\"3612\">\u062a\u0639\u0631\u064a\u0641:<\/strong> \u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631 \u0648\u062d\u062f\u0629 SPD \u0648\u0627\u062d\u062f\u0629 \u0644\u0643\u0644 \u0645\u0646 \u0627\u0644\u0623\u0634\u0643\u0627\u0644 \u0627\u0644\u0645\u0648\u062c\u064a\u0629 \u0645\u0646 \u0627\u0644\u0641\u0626\u0629 \u0627\u0644\u0623\u0648\u0644\u0649 (10\/350 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629) \u0648\u0627\u0644\u0641\u0626\u0629 \u0627\u0644\u062b\u0627\u0646\u064a\u0629 (8\/20 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3711\" data-end=\"3804\">\r\n<p data-start=\"3713\" data-end=\"3804\"><strong data-start=\"3713\" data-end=\"3725\">\u0641\u0627\u0626\u062f\u0629:<\/strong> \u064a\u062d\u0645\u064a \u0645\u0646 \u0627\u0644\u0635\u0648\u0627\u0639\u0642 \u0627\u0644\u0645\u0628\u0627\u0634\u0631\u0629 \u0648\u0643\u0630\u0644\u0643 \u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0639\u0648\u0627\u0635\u0641 \u0641\u064a \u062c\u0647\u0627\u0632 \u0648\u0627\u062d\u062f.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3805\" data-end=\"3895\">\r\n<p data-start=\"3807\" data-end=\"3895\"><strong data-start=\"3807\" data-end=\"3830\">\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a:<\/strong> \u062f\u062e\u0648\u0644 \u0627\u0644\u062e\u062f\u0645\u0629 \u0639\u0646\u062f\u0645\u0627 \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u0633\u0627\u062d\u0629 \u0623\u0648 \u0627\u0644\u0645\u064a\u0632\u0627\u0646\u064a\u0629 \u0645\u062d\u062f\u0648\u062f\u0629 \u0628\u062a\u0639\u062f\u062f \u0627\u0644\u0623\u062c\u0647\u0632\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3896\" data-end=\"4076\">\r\n<p data-start=\"3898\" data-end=\"3914\"><strong data-start=\"3898\" data-end=\"3912\">\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645:<\/strong><\/p>\r\n\r\n<ul data-start=\"3917\" data-end=\"4076\">\r\n \t<li data-start=\"3917\" data-end=\"3996\">\r\n<p data-start=\"3919\" data-end=\"3996\">\u062a\u062d\u062a\u0627\u062c \u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0623\u0648 \u0627\u0644\u0633\u0643\u0646\u064a\u0629 \u0645\u062a\u0648\u0633\u0637\u0629 \u0627\u0644\u062d\u062c\u0645 \u0625\u0644\u0649 \u062d\u0644\u0648\u0644 \u0645\u062f\u0645\u062c\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3999\" data-end=\"4076\">\r\n<p data-start=\"4001\" data-end=\"4076\">\u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u062a\u064a \u064a\u0635\u0639\u0628 \u0641\u064a\u0647\u0627 \u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0628\u064a\u0646 \u0627\u0644\u0646\u0648\u0639 1 \u0648\u0627\u0644\u0646\u0648\u0639 2 \u0627\u0644\u0645\u0646\u0641\u0635\u0644\u064a\u0646.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4077\" data-end=\"4178\">\r\n<p data-start=\"4079\" data-end=\"4178\"><strong data-start=\"4079\" data-end=\"4091\">\u0645\u062b\u0627\u0644:<\/strong> A shopping mall's main switchboard may install a T1+T2 SPD to simplify protection.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4185\" data-end=\"4217\">4.5 T2 + T3 \u0645\u062c\u0645\u0648\u0639\u0629 SPDs<\/h3>\r\n<ul data-start=\"4218\" data-end=\"4676\">\r\n \t<li data-start=\"4218\" data-end=\"4299\">\r\n<p data-start=\"4220\" data-end=\"4299\"><strong data-start=\"4220\" data-end=\"4235\">\u062a\u0639\u0631\u064a\u0641:<\/strong> \u064a\u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0647\u062c\u064a\u0646\u0629 \u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0641\u0626\u062a\u064a\u0646 II \u0648III.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4300\" data-end=\"4374\">\r\n<p data-start=\"4302\" data-end=\"4374\"><strong data-start=\"4302\" data-end=\"4314\">\u0641\u0627\u0626\u062f\u0629:<\/strong> \u064a\u0648\u0641\u0631 \u0643\u0644\u0627 \u0645\u0646 \u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0648\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0637\u0631\u0641\u064a\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4375\" data-end=\"4477\">\r\n<p data-start=\"4377\" data-end=\"4477\"><strong data-start=\"4377\" data-end=\"4400\">\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a:<\/strong> \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0627\u0644\u0641\u0631\u0639\u064a\u0629 \u0642\u0631\u064a\u0628\u0629 \u0645\u0646 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u062d\u0633\u0627\u0633\u0629\u060c \u062e\u0627\u0635\u0629 \u0625\u0630\u0627 \u062a\u062c\u0627\u0648\u0632 \u0637\u0648\u0644 \u0627\u0644\u0643\u0627\u0628\u0644 10 \u0623\u0645\u062a\u0627\u0631.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4478\" data-end=\"4559\">\r\n<p data-start=\"4480\" data-end=\"4496\"><strong data-start=\"4480\" data-end=\"4494\">\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645:<\/strong><\/p>\r\n\r\n<ul data-start=\"4499\" data-end=\"4559\">\r\n \t<li data-start=\"4499\" data-end=\"4559\">\r\n<p data-start=\"4501\" data-end=\"4559\">\u0645\u0631\u0627\u0643\u0632 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a\u060c \u063a\u0631\u0641 \u0627\u0644\u062e\u0627\u062f\u0645\u060c \u062e\u0632\u0627\u0626\u0646 \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4560\" data-end=\"4676\">\r\n<p data-start=\"4562\" data-end=\"4676\"><strong data-start=\"4562\" data-end=\"4574\">\u0645\u062b\u0627\u0644:<\/strong> \u064a\u0645\u0643\u0646 \u0644\u062e\u0637 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0622\u0644\u064a \u0644\u0644\u0645\u0635\u0646\u0639 \u0627\u0644\u0645\u0632\u0648\u062f \u0628\u0643\u0627\u0628\u0644 \u0637\u0648\u064a\u0644 \u064a\u0645\u062a\u062f \u0625\u0644\u0649 PLCs \u0627\u0633\u062a\u062e\u062f\u0627\u0645 T2+T3 SPD \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0644\u0648\u062d\u0627\u062a PLC.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4683\" data-end=\"4734\">4.6 \u0627\u0644\u0646\u0648\u0639 4 SPDs (UL 1449\u060c \u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629 \u0641\u0642\u0637)<\/h3>\r\n<ul data-start=\"4735\" data-end=\"5324\">\r\n \t<li data-start=\"4735\" data-end=\"4856\">\r\n<p data-start=\"4737\" data-end=\"4856\"><strong data-start=\"4737\" data-end=\"4762\">\u0627\u0644\u062a\u0639\u0631\u064a\u0641 (UL 1449):<\/strong> \u0644\u0627 \u064a\u064f\u0642\u0635\u062f \u0645\u0646 \u062a\u062c\u0645\u064a\u0639\u0627\u062a \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0623\u0646 \u062a\u0643\u0648\u0646 \u0623\u062c\u0647\u0632\u0629 \u0645\u0633\u062a\u0642\u0644\u0629 \u0648\u0644\u0643\u0646\u0647\u0627 \u0645\u062f\u0645\u062c\u0629 \u0641\u064a \u0645\u0639\u062f\u0627\u062a OEM.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4857\" data-end=\"5012\">\r\n<p data-start=\"4859\" data-end=\"4879\"><strong data-start=\"4859\" data-end=\"4877\">\u0627\u0644\u0641\u0626\u0627\u062a \u0627\u0644\u0641\u0631\u0639\u064a\u0629:<\/strong><\/p>\r\n\r\n<ul data-start=\"4882\" data-end=\"5012\">\r\n \t<li data-start=\"4882\" data-end=\"4965\">\r\n<p data-start=\"4884\" data-end=\"4965\">\u062a\u062c\u0645\u064a\u0639\u0627\u062a \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 4 (CA): \u0623\u062c\u0632\u0627\u0621 SPD \u0627\u0644\u0645\u0639\u0628\u0623\u0629 \u0645\u0633\u0628\u0642\u064b\u0627 \u0644\u0644\u0645\u0635\u0646\u0639\u064a\u0646.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4968\" data-end=\"5012\">\r\n<p data-start=\"4970\" data-end=\"5012\">\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0646\u0648\u0639 5: MOVs \u0627\u0644\u062e\u0627\u0645 \u0623\u0648 GDTs.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5013\" data-end=\"5099\">\r\n<p data-start=\"5015\" data-end=\"5099\"><strong data-start=\"5015\" data-end=\"5038\">\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a:<\/strong> \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629 \u0623\u0648 \u0645\u0635\u0627\u062f\u0631 \u0627\u0644\u0637\u0627\u0642\u0629 \u0623\u0648 \u0627\u0644\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u0645\u0635\u0645\u0645\u0629 \u062e\u0635\u064a\u0635\u064b\u0627.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5100\" data-end=\"5230\">\r\n<p data-start=\"5102\" data-end=\"5118\"><strong data-start=\"5102\" data-end=\"5116\">\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645:<\/strong><\/p>\r\n\r\n<ul data-start=\"5121\" data-end=\"5230\">\r\n \t<li data-start=\"5121\" data-end=\"5166\">\r\n<p data-start=\"5123\" data-end=\"5166\">\u064a\u0642\u0648\u0645 \u0645\u0635\u0646\u0639\u0648 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0623\u0635\u0644\u064a\u0629 \u0628\u062a\u0635\u0645\u064a\u0645 \u0645\u0639\u062f\u0627\u062a \u0645\u062d\u0645\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5169\" data-end=\"5230\">\r\n<p data-start=\"5171\" data-end=\"5230\">\u0645\u0639\u062f\u0627\u062a \u0635\u0646\u0627\u0639\u064a\u0629 \u0645\u062a\u062e\u0635\u0635\u0629 \u0641\u064a \u0633\u0648\u0642 \u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5231\" data-end=\"5324\">\r\n<p data-start=\"5233\" data-end=\"5324\"><strong data-start=\"5233\" data-end=\"5245\">\u0645\u062b\u0627\u0644:<\/strong> \u062a\u0642\u0648\u0645 \u0625\u062d\u062f\u0649 \u0627\u0644\u0634\u0631\u0643\u0627\u062a \u0627\u0644\u0645\u0635\u0646\u0639\u0629 \u0644\u0640 UPS \u0628\u062f\u0645\u062c \u0645\u062c\u0645\u0648\u0639\u0627\u062a SPD \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 4 \u062f\u0627\u062e\u0644 \u0645\u0646\u062a\u062c\u0627\u062a\u0647\u0627.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5331\" data-end=\"5382\">4.7 \u0623\u062c\u0647\u0632\u0629 SPDs \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629\/\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 (IEC 61643-31\u060c \u062d\u062a\u0649 1500 \u0641\u0648\u0644\u062a \u062a\u064a\u0627\u0631 \u0645\u0633\u062a\u0645\u0631)<\/h3>\r\n<ul data-start=\"5383\" data-end=\"6082\">\r\n \t<li data-start=\"5383\" data-end=\"5474\">\r\n<p data-start=\"5385\" data-end=\"5474\"><strong data-start=\"5385\" data-end=\"5400\">\u062a\u0639\u0631\u064a\u0641:<\/strong> \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0645\u0635\u0645\u0645\u0629 \u0644\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629 \u0648\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5475\" data-end=\"5555\">\r\n<p data-start=\"5477\" data-end=\"5555\"><strong data-start=\"5477\" data-end=\"5496\">\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631:<\/strong> \u062a\u062d\u062f\u062f \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 IEC 61643-31 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5556\" data-end=\"5647\">\r\n<p data-start=\"5558\" data-end=\"5647\"><strong data-start=\"5558\" data-end=\"5581\">\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a:<\/strong> \u0635\u0646\u0627\u062f\u064a\u0642 \u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u0645\u0635\u0641\u0648\u0641\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629\u060c \u0648\u0627\u0644\u0639\u0627\u0643\u0633\u0627\u062a\u060c \u0648\u0644\u0648\u062d\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5648\" data-end=\"5876\">\r\n<p data-start=\"5650\" data-end=\"5671\"><strong data-start=\"5650\" data-end=\"5669\">\u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629:<\/strong><\/p>\r\n\r\n<ul data-start=\"5674\" data-end=\"5876\">\r\n \t<li data-start=\"5674\" data-end=\"5740\">\r\n<p data-start=\"5676\" data-end=\"5740\">Ucpv: \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a \u0627\u0644\u0645\u0633\u062a\u0645\u0631 \u0627\u0644\u0645\u0642\u062f\u0631 (600 \u0641\u0648\u0644\u062a\u060c 1000 \u0641\u0648\u0644\u062a\u060c 1500 \u0641\u0648\u0644\u062a).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5743\" data-end=\"5796\">\r\n<p data-start=\"5745\" data-end=\"5796\">In \/ Imax: \u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0632\u0627\u0626\u062f \u0639\u0644\u0649 \u062c\u0627\u0646\u0628 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5799\" data-end=\"5876\">\r\n<p data-start=\"5801\" data-end=\"5876\">\u0632\u0645\u0646 \u0627\u0644\u0627\u0633\u062a\u062c\u0627\u0628\u0629: \u064a\u062c\u0628 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0633\u0631\u064a\u0639\u064b\u0627 \u0628\u0645\u0627 \u064a\u0643\u0641\u064a \u0644\u0644\u0639\u0627\u0643\u0633\u0627\u062a \u0627\u0644\u0642\u0627\u0626\u0645\u0629 \u0639\u0644\u0649 \u0623\u0634\u0628\u0627\u0647 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5877\" data-end=\"5976\">\r\n<p data-start=\"5879\" data-end=\"5895\"><strong data-start=\"5879\" data-end=\"5893\">\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645:<\/strong><\/p>\r\n\r\n<ul data-start=\"5898\" data-end=\"5976\">\r\n \t<li data-start=\"5898\" data-end=\"5976\">\r\n<p data-start=\"5900\" data-end=\"5976\">\u0645\u0632\u0627\u0631\u0639 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0634\u0645\u0633\u064a\u0629 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0627\u0644\u0645\u0631\u0627\u0641\u0642\u060c \u0648\u0627\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629 \u0639\u0644\u0649 \u0627\u0644\u0623\u0633\u0637\u062d\u060c \u0648\u0645\u0631\u0627\u0641\u0642 \u062a\u062e\u0632\u064a\u0646 \u0627\u0644\u0628\u0637\u0627\u0631\u064a\u0627\u062a.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5977\" data-end=\"6082\">\r\n<p data-start=\"5979\" data-end=\"6082\"><strong data-start=\"5979\" data-end=\"5991\">\u0645\u062b\u0627\u0644:<\/strong> \u0633\u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0645\u0632\u0631\u0639\u0629 \u0637\u0627\u0642\u0629 \u0634\u0645\u0633\u064a\u0629 \u0628\u0642\u062f\u0631\u0629 1500 \u0641\u0648\u0644\u062a \u062a\u064a\u0627\u0631 \u0645\u0633\u062a\u0645\u0631 <a href=\"https:\/\/www.britecelectric.com\/ar\/product_category\/pv-surge-protection-type-1-type-2\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"6024\" data-end=\"6041\">T1 + T2 PV SPDs<\/strong><\/a> \u0641\u064a \u0635\u0646\u0627\u062f\u064a\u0642 \u0627\u0644\u0645\u0648\u062d\u062f \u0648\u0645\u062f\u062e\u0644\u0627\u062a \u0627\u0644\u0639\u0627\u0643\u0633.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6089\" data-end=\"6304\"><strong data-start=\"6091\" data-end=\"6115\">\u0646\u0635\u064a\u062d\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 \u0644\u0644\u0642\u0631\u0627\u0621:<\/strong> \u0627\u0633\u062a\u062e\u062f\u0645 \u062f\u0627\u0626\u0645\u064b\u0627 \u0623 <em data-start=\"6129\" data-end=\"6153\">\u0646\u0638\u0627\u0645 SPD \u0627\u0644\u0645\u0646\u0633\u0642<\/em>. \u0627\u0644\u0646\u0648\u0639 1 \u0639\u0646\u062f \u0627\u0644\u0645\u062f\u062e\u0644\u060c \u0648\u0627\u0644\u0646\u0648\u0639 2 \u0639\u0646\u062f \u0627\u0644\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u0641\u0631\u0639\u064a\u0629\u060c \u0648\u0627\u0644\u0646\u0648\u0639 3 \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u062d\u0631\u062c\u0629. \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629\u060c \u0623\u0636\u0641 \u0627\u0644\u0646\u0648\u0639 2 \u0623\u0648 T1+T2 DC SPDs \u0643\u0645\u0627 \u0647\u0648 \u0645\u062d\u062f\u062f \u0641\u064a IEC 61643-31.<\/p>\r\n\r\n<h2 data-start=\"3151\" data-end=\"3197\">5. \u0623\u062c\u0647\u0632\u0629 SPD \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 1 \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0646\u0648\u0639 2 \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0646\u0648\u0639 3<\/h2>\r\n<p data-start=\"3199\" data-end=\"3436\">\u0625\u0630\u0627 \u0643\u0646\u062a \u062a\u0631\u064a\u062f \u0627\u0644\u062a\u0639\u0645\u0642 \u0623\u0643\u062b\u0631\u060c \u0641\u0631\u0627\u062c\u0639 \u0645\u062f\u0648\u0646\u062a\u0646\u0627 \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u062d\u0648\u0644 \u0647\u0630\u0627 \u0627\u0644\u0645\u0648\u0636\u0648\u0639 \u0647\u0646\u0627:<br data-start=\"3270\" data-end=\"3273\" \/><a class=\"\" href=\"https:\/\/www.britecelectric.com\/ar\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\" target=\"_blank\" rel=\"noopener\" data-start=\"3276\" data-end=\"3434\"><em><strong>\u0627\u0644\u0641\u0631\u0642 \u0628\u064a\u0646 \u0627\u0644\u0646\u0648\u0639 1 \u0648\u0627\u0644\u0646\u0648\u0639 2 \u0648\u0627\u0644\u0646\u0648\u0639 3 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 SPD<\/strong><\/em><\/a><\/p>\r\n<p data-start=\"3438\" data-end=\"3504\">\u0641\u064a\u0645\u0627 \u064a\u0644\u064a \u0645\u0642\u0627\u0631\u0646\u0629 \u0633\u0631\u064a\u0639\u0629 \u0644\u0645\u0633\u0627\u0639\u062f\u062a\u0643 \u0641\u064a \u0627\u062e\u062a\u064a\u0627\u0631 \u0646\u0648\u0639 SPD \u0627\u0644\u0645\u0646\u0627\u0633\u0628:<\/p>\r\n\r\n<table>\r\n<thead>\r\n<tr>\r\n<th>\u064a\u0635\u0641<\/th>\r\n<th><strong>\u0627\u0644\u0646\u0648\u0639 1 SPD<\/strong><\/th>\r\n<th><strong>\u0627\u0644\u0646\u0648\u0639 2 SPD<\/strong><\/th>\r\n<th><strong>\u0627\u0644\u0646\u0648\u0639 3 SPD<\/strong><\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>\u0645\u0639\u064a\u0627\u0631 \u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631\u0647<\/strong><\/td>\r\n<td>IEC 61643-11 \u0627\u0644\u0641\u0626\u0629 \u0627\u0644\u0623\u0648\u0644\u0649 (10\/350 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629) + \u0646\u0648\u0639 UL \u0645\u0632\u062f\u0648\u062c \u0627\u0644\u062a\u0635\u0646\u064a\u0641 1\/2<\/td>\r\n<td>IEC 61643-11 \u0627\u0644\u0641\u0626\u0629 \u0627\u0644\u062b\u0627\u0646\u064a\u0629 (8\/20 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629) + \u0646\u0648\u0639 UL 2<\/td>\r\n<td>IEC 61643-11 \u0627\u0644\u0641\u0626\u0629 III (\u0627\u0644\u0645\u0648\u062c\u0629 \u0627\u0644\u0645\u0631\u0643\u0628\u0629) + \u0646\u0648\u0639 UL 3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u0627\u0644\u0645\u0648\u0642\u0639 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a<\/strong><\/td>\r\n<td>\u0645\u062f\u062e\u0644 \u0627\u0644\u062e\u062f\u0645\u0629 \/ \u0644\u0648\u062d\u0629 \u0627\u0644\u062a\u0628\u062f\u064a\u0644 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/td>\r\n<td>\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629\/\u0627\u0644\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u0641\u0631\u0639\u064a\u0629<\/td>\r\n<td>\u0641\u064a \u062d\u062f\u0648\u062f 1 \u0645\u062a\u0631 \u0645\u0646 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u062d\u0631\u062c\u0629 (\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0643\u0645\u0628\u064a\u0648\u062a\u0631 \u0648\u0627\u0644\u0633\u0627\u0626\u0642\u064a\u0646 \u0648\u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0637\u0628\u064a\u0629)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u0627\u0644\u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629<\/strong><\/td>\r\n<td>\u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u062a\u064a\u0627\u0631 \u0627\u0644\u0628\u0631\u0642 \u0627\u0644\u0645\u0628\u0627\u0634\u0631. \u062d\u0645\u0627\u064a\u0629 \u0645\u062f\u062e\u0644 \u0627\u0644\u0645\u0628\u0646\u0649<\/td>\r\n<td>\u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0627\u0644\u0632\u064a\u0627\u062f\u0627\u062a \u0627\u0644\u0645\u0639\u064a\u0627\u0631\u064a\u0629 \u0645\u0646 \u0627\u0644\u062a\u0628\u062f\u064a\u0644\u060c \u0648\u0623\u0642\u0648\u0627\u0633 \u0627\u0644\u062e\u0637\u0623\u060c \u0648\u0645\u0627 \u0625\u0644\u0649 \u0630\u0644\u0643.<\/td>\r\n<td>\u0642\u0645\u0639 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0645\u062a\u0628\u0642\u064a\u0629 \u0644\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0633\u0629.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u062a\u0631\u0643\u064a\u0632 \u0627\u0644\u0645\u0639\u0644\u0645\u0629<\/strong><\/td>\r\n<td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0639\u0627\u0644\u064a\u0629 Uc \u2265 \u062c\u0647\u062f \u0627\u0644\u0646\u0638\u0627\u0645\u061b \u064a\u0635\u0644 \u0627\u0644\u062a\u0646\u0633\u064a\u0642<\/td>\r\n<td>\u0641\u064a Imax\u060c \u064a\u062a\u0645 \u0627\u0644\u062a\u062a\u0627\u0644\u064a \u0645\u0639 SPDs \u0627\u0644\u0645\u0646\u0628\u0639\/\u0627\u0644\u0645\u0635\u0628<\/td>\r\n<td>\u0645\u0646\u062e\u0641\u0636 \u062c\u062f\u064b\u0627\u061b \u0644\u0642\u0637 \u062f\u0642\u064a\u0642 \u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u062d\u0633\u0627\u0633\u0629<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u0645\u0644\u0627\u062d\u0638\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a<\/strong><\/td>\r\n<td>\u064a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0623\u0633\u0644\u0627\u0643 \u0643\u0628\u064a\u0631\u0629 (\u226516 \u0645\u0645\u00b2)\u061b \u064a\u0645\u0643\u0646 \u062a\u062b\u0628\u064a\u062a\u0647 \u062f\u0648\u0646 OCPD \u0627\u0644\u0645\u0646\u0628\u0639\u061b \u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0645\u0646\u0633\u0642\u0629 \u0645\u0639 \u0627\u0644\u0646\u0648\u0639 2<\/td>\r\n<td>\u064a\u062a\u0637\u0644\u0628 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0632\u0627\u0626\u062f. \u0627\u0644\u0623\u0633\u0644\u0627\u0643 \u22656 \u0645\u0645\u00b2<\/td>\r\n<td>\u0642\u0631\u064a\u0628 \u062c\u062f\u064b\u0627 \u0645\u0646 \u0627\u0644\u062a\u062d\u0645\u064a\u0644\u061b \u0645\u0644\u062d\u0642 \u0644\u0644\u0646\u0648\u0639 \u0627\u0644\u0645\u0646\u0628\u0639 2<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645<\/strong><\/td>\r\n<td>\u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0630\u0627\u062a LPS\u060c \u0648\u0627\u0644\u0647\u064a\u0627\u0643\u0644 \u0627\u0644\u0639\u0627\u0644\u064a\u0629\u060c \u0648\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0628\u0631\u0642 \u0627\u0644\u0639\u0627\u0644\u064a\u0629<\/td>\r\n<td>\u0645\u0639\u0638\u0645 \u0627\u0644\u0645\u0646\u0627\u0632\u0644 \u0648\u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0648\u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0627\u0644\u0641\u0631\u0639\u064a\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/td>\r\n<td>\u0645\u062c\u0645\u0648\u0639\u0627\u062a \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0643\u0645\u0628\u064a\u0648\u062a\u0631 \u0627\u0644\u0634\u062e\u0635\u064a\u0629\u060c \u0648\u0631\u0641\u0648\u0641 PLC\u060c \u0648\u0623\u0646\u0638\u0645\u0629 LED\/\u0627\u0644\u0637\u0628\u064a\u0629<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h4 data-start=\"1155\" data-end=\"1168\">\u0645\u0644\u062e\u0635<\/h4>\r\n<ul data-start=\"1183\" data-end=\"1421\">\r\n \t<li data-start=\"1183\" data-end=\"1258\">\r\n<p data-start=\"1185\" data-end=\"1258\"><strong data-start=\"1185\" data-end=\"1200\">\u0627\u0643\u062a\u0628 1 SPDs<\/strong> \u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0636\u0631\u0628\u0627\u062a \u0627\u0644\u0628\u0631\u0642 \u0627\u0644\u0645\u0628\u0627\u0634\u0631\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 (10\/350 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1259\" data-end=\"1334\">\r\n<p data-start=\"1261\" data-end=\"1334\"><strong data-start=\"1261\" data-end=\"1276\">\u0627\u0644\u0646\u0648\u0639 2 SPDs<\/strong> \u0627\u0644\u062a\u062e\u0641\u064a\u0641 \u0645\u0646 \u0637\u0641\u0631\u0627\u062a \u0627\u0644\u062a\u0628\u062f\u064a\u0644 \u0648\u0627\u0644\u0636\u0631\u0628\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u0645\u0628\u0627\u0634\u0631\u0629 (8\/20 \u0645\u064a\u0643\u0631\u0648\u062b\u0627\u0646\u064a\u0629).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1335\" data-end=\"1421\">\r\n<p data-start=\"1337\" data-end=\"1421\"><strong data-start=\"1337\" data-end=\"1352\">\u0627\u0643\u062a\u0628 3 SPDs<\/strong> \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0633\u0629 \u0641\u064a \u0627\u0644\u0645\u064a\u0644 \u0627\u0644\u0623\u062e\u064a\u0631 (\u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u0645\u0648\u062c\u064a \u0627\u0644\u0645\u0631\u0643\u0628).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"185\" data-end=\"253\">6. \u0643\u064a\u0641\u064a\u0629 \u062a\u0631\u0643\u064a\u0628 \u0648\u062a\u0646\u0633\u064a\u0642 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 (SPD)<\/h2>\r\n<p data-start=\"255\" data-end=\"619\">\u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u0635\u062d\u064a\u062d \u0644\u0627 \u064a\u0642\u0644 \u0623\u0647\u0645\u064a\u0629 \u0639\u0646 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 (SPD). \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0624\u062f\u064a \u0627\u0644\u0623\u0633\u0644\u0627\u0643 \u063a\u064a\u0631 \u0627\u0644\u0635\u062d\u064a\u062d\u0629 \u0623\u0648 \u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0627\u0644\u0633\u064a\u0626 \u0625\u0644\u0649 \u0627\u0644\u0625\u0636\u0631\u0627\u0631 \u0628\u0645\u0633\u062a\u0648\u064a\u0627\u062a \u0627\u0644\u062d\u0645\u0627\u064a\u0629\u060c \u062d\u062a\u0649 \u0644\u0648 \u0643\u0627\u0646 SPD \u0646\u0641\u0633\u0647 \u064a\u0641\u064a \u0628\u0645\u0639\u0627\u064a\u064a\u0631 IEC \u0623\u0648 UL. \u0627\u0633\u062a\u0646\u0627\u062f\u064b\u0627 \u0625\u0644\u0649 IEC 61643-11\u060c \u0648IEC 61643-31\u060c \u0648UL 1449\u060c \u0648\u0627\u0644\u0645\u0628\u0627\u062f\u0626 \u0627\u0644\u062a\u0648\u062c\u064a\u0647\u064a\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0644\u0634\u0631\u0643\u062a\u0646\u0627\u060c \u0625\u0644\u064a\u0643 \u0623\u0641\u0636\u0644 \u0627\u0644\u0645\u0645\u0627\u0631\u0633\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629:<\/p>\r\n<p data-start=\"255\" data-end=\"619\"><a href=\"https:\/\/www.britecelectric.com\/ar\/attachment\/spds-install\/\" rel=\"attachment wp-att-2167\"><img class=\"alignnone size-large wp-image-2167\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPDs-install-1024x726.jpg\" alt=\"\" width=\"1024\" height=\"726\" \/><\/a><\/p>\r\n\r\n<h3 data-start=\"621\" data-end=\"654\">1. \u0623\u0642\u0635\u0631 \u0642\u0627\u0639\u062f\u0629 \u0627\u062a\u0635\u0627\u0644<\/h3>\r\n<ul data-start=\"655\" data-end=\"917\">\r\n \t<li data-start=\"655\" data-end=\"789\">\r\n<p data-start=\"657\" data-end=\"789\">\u0627\u062c\u0639\u0644 \u062c\u0645\u064a\u0639 \u0623\u0633\u0644\u0627\u0643 \u062a\u0648\u0635\u064a\u0644 SPD \u0642\u0635\u064a\u0631\u0629 \u0648\u0645\u0633\u062a\u0642\u064a\u0645\u0629 \u0642\u062f\u0631 \u0627\u0644\u0625\u0645\u0643\u0627\u0646\u060c \u0648\u0645\u0646 \u0627\u0644\u0646\u0627\u062d\u064a\u0629 \u0627\u0644\u0645\u062b\u0627\u0644\u064a\u0629 \u2265 0.5 \u0645\u062a\u0631 (\u0643\u0645\u0627 \u0647\u0648 \u0645\u0648\u0635\u0649 \u0628\u0647 \u0641\u064a \u062f\u0644\u064a\u0644\u0646\u0627 \u0627\u0644\u0641\u0646\u064a).<\/p>\r\n<\/li>\r\n \t<li data-start=\"790\" data-end=\"917\">\r\n<p data-start=\"792\" data-end=\"917\">\u062a\u0642\u062f\u0645 \u0627\u0644\u062e\u064a\u0648\u0637 \u0627\u0644\u0637\u0648\u064a\u0644\u0629 \u0627\u0631\u062a\u0641\u0627\u0639\u064b\u0627 \u062d\u062b\u064a\u064b\u0627 \u0644\u0644\u062c\u0647\u062f\u060c \u0645\u0645\u0627 \u064a\u0632\u064a\u062f \u0645\u0646 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0628\u0642\u064a (\u0644\u0623\u0639\u0644\u0649) \u0627\u0644\u0630\u064a \u062a\u0631\u0627\u0647 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0645\u062d\u0645\u064a\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"919\" data-end=\"950\">2. \u062d\u062c\u0645 \u0627\u0644\u0645\u0648\u0635\u0644 \u0627\u0644\u0635\u062d\u064a\u062d<\/h3>\r\n<ul data-start=\"951\" data-end=\"1317\">\r\n \t<li data-start=\"951\" data-end=\"1242\">\r\n<p data-start=\"953\" data-end=\"1002\">\u0627\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u0630\u0627\u062a \u0627\u0644\u062d\u062c\u0645 \u0648\u0641\u0642\u064b\u0627 \u0644\u0646\u0648\u0639 SPD:<\/p>\r\n\r\n<ul data-start=\"1005\" data-end=\"1242\">\r\n \t<li data-start=\"1005\" data-end=\"1089\">\r\n<p data-start=\"1007\" data-end=\"1089\"><strong data-start=\"1007\" data-end=\"1022\">\u0627\u0644\u0646\u0648\u0639 1 SPD:<\/strong> \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 16 \u0645\u0645\u00b2 \u0645\u0646 \u0627\u0644\u0646\u062d\u0627\u0633 (\u062a\u064a\u0627\u0631 \u0627\u0644\u0628\u0631\u0642 \u0639\u0627\u0644\u064a \u0627\u0644\u0637\u0627\u0642\u0629\u060c Iimp).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1092\" data-end=\"1137\">\r\n<p data-start=\"1094\" data-end=\"1137\"><strong data-start=\"1094\" data-end=\"1109\">\u0627\u0644\u0646\u0648\u0639 2 SPD:<\/strong> \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 6 \u0645\u0645\u00b2 \u0645\u0646 \u0627\u0644\u0646\u062d\u0627\u0633.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1140\" data-end=\"1242\">\r\n<p data-start=\"1142\" data-end=\"1242\"><strong data-start=\"1142\" data-end=\"1157\">\u0627\u0644\u0646\u0648\u0639 3 SPD:<\/strong> \u0627\u062a\u0628\u0639 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629\u060c \u0648\u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u0642\u0627\u0637\u0639 \u0627\u0644\u0639\u0631\u0636\u064a\u0629 \u0623\u0635\u063a\u0631 \u0628\u0633\u0628\u0628 \u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u062a\u064a\u0627\u0631.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1243\" data-end=\"1317\">\r\n<p data-start=\"1245\" data-end=\"1317\">\u0627\u0633\u062a\u062e\u062f\u0645 \u062f\u0627\u0626\u0645\u064b\u0627 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u0627\u0644\u0646\u062d\u0627\u0633\u064a\u0629 \u0630\u0627\u062a \u0627\u0644\u0645\u0639\u0627\u0648\u0642\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629 \u0648\u062a\u062c\u0646\u0628 \u0627\u0644\u0627\u0646\u062d\u0646\u0627\u0621\u0627\u062a \u0627\u0644\u062d\u0627\u062f\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1319\" data-end=\"1349\">3. \u0627\u0644\u062a\u0631\u0627\u0628\u0637 \u0645\u062a\u0633\u0627\u0648\u064a \u0627\u0644\u062c\u0647\u062f<\/h3>\r\n<ul data-start=\"1350\" data-end=\"1571\">\r\n \t<li data-start=\"1350\" data-end=\"1447\">\r\n<p data-start=\"1352\" data-end=\"1447\">\u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u062c\u0645\u064a\u0639 \u0623\u062c\u0647\u0632\u0629 SPD \u0645\u062a\u0635\u0644\u0629 \u0628\u0646\u0641\u0633 \u0634\u0631\u064a\u0637 \u0627\u0644\u062a\u0623\u0631\u064a\u0636 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0623\u0648 \u0646\u0638\u0627\u0645 \u0627\u0644\u0631\u0628\u0637 \u0645\u062a\u0633\u0627\u0648\u064a \u0627\u0644\u062c\u0647\u062f.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1448\" data-end=\"1571\">\r\n<p data-start=\"1450\" data-end=\"1571\">\u064a\u0636\u0645\u0646 \u0627\u0644\u062a\u0631\u0627\u0628\u0637 \u062a\u0641\u0631\u064a\u063a \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0645\u0641\u0627\u062c\u0626\u0629 \u0628\u0623\u0645\u0627\u0646 \u0625\u0644\u0649 \u0627\u0644\u0623\u0631\u0636\u060c \u0648\u062a\u062c\u0646\u0628 \u0627\u0644\u0627\u062e\u062a\u0644\u0627\u0641\u0627\u062a \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0627\u0644\u062e\u0637\u064a\u0631\u0629 \u0628\u064a\u0646 \u0627\u0644\u062f\u0648\u0627\u0626\u0631.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1573\" data-end=\"1598\">4. \u062a\u0646\u0633\u064a\u0642 SPD<\/h3>\r\n<ul data-start=\"1599\" data-end=\"2069\">\r\n \t<li data-start=\"1599\" data-end=\"1738\">\r\n<p data-start=\"1601\" data-end=\"1738\">\u0627\u0644\u062a\u0633\u0644\u0633\u0644 \u0627\u0644\u0647\u0631\u0645\u064a \u0644\u0645\u0633\u062a\u0648\u0649 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062c\u0647\u062f (\u0623\u0639\u0644\u0649): \u064a\u062c\u0628 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0644\u0648\u062d\u062f\u0627\u062a SPD \u0627\u0644\u0623\u0648\u0644\u064a\u0629 (\u0627\u0644\u0646\u0648\u0639 1) \u062f\u0627\u0626\u0645\u064b\u0627 \u0623\u0639\u0644\u0649 \u0645\u0646 \u0648\u062d\u062f\u0627\u062a SPD \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629 (\u0627\u0644\u0646\u0648\u0639 2\/3).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1739\" data-end=\"1907\">\r\n<p data-start=\"1741\" data-end=\"1907\">\u0642\u0627\u0639\u062f\u0629 \u0627\u0644\u0645\u0633\u0627\u0641\u0629: \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0643\u0627\u0628\u0644 \u0628\u064a\u0646 SPDs \u0648\u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u062d\u0645\u064a\u0629 \u0623\u0637\u0648\u0644 \u0645\u0646 10 \u0623\u0645\u062a\u0627\u0631\u060c \u0641\u0642\u0645 \u0628\u062a\u062b\u0628\u064a\u062a SPD \u0625\u0636\u0627\u0641\u064a (\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0627\u0644\u0646\u0648\u0639 3) \u0644\u062d\u0645\u0627\u064a\u0629 \u0623\u0641\u0636\u0644.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1908\" data-end=\"2069\">\r\n<p data-start=\"1910\" data-end=\"2069\">\u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0627\u0644\u0645\u062a\u0648\u0627\u0632\u064a: \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u062d\u0645\u0627\u064a\u0629 \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0645\u0631\u0627\u062d\u0644 (\u0627\u0644\u0646\u0648\u0639 1 + \u0627\u0644\u0646\u0648\u0639 2 + \u0627\u0644\u0646\u0648\u0639 3)\u060c \u062a\u0623\u0643\u062f \u0645\u0646 \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u0644\u0644\u0637\u0627\u0642\u0629 \u0628\u062d\u064a\u062b \u0644\u0627 \u064a\u062a\u0645 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u0649 \u0623\u064a \u062c\u0647\u0627\u0632 \u0648\u0627\u062d\u062f.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2071\" data-end=\"2105\">5. \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a\u0629 (OCPD)<\/h3>\r\n<ul data-start=\"2106\" data-end=\"2388\">\r\n \t<li data-start=\"2106\" data-end=\"2187\">\r\n<p data-start=\"2108\" data-end=\"2187\">\u0627\u0633\u062a\u062e\u062f\u0645 \u062f\u0627\u0626\u0645\u064b\u0627 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0623\u0648 \u0642\u0648\u0627\u0637\u0639 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u062d\u0645\u0627\u064a\u0629 SPD \u0646\u0641\u0633\u0647.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2188\" data-end=\"2271\">\r\n<p data-start=\"2190\" data-end=\"2271\">\u064a\u062d\u062f\u062f \u062f\u0644\u064a\u0644\u0646\u0627 \u062a\u0635\u0646\u064a\u0641\u0627\u062a \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a\u0629 \u0627\u0639\u062a\u0645\u0627\u062f\u064b\u0627 \u0639\u0644\u0649 \u0637\u0631\u0627\u0632 SPD \u0648Imax\/Iimp.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2272\" data-end=\"2388\">\r\n<p data-start=\"2274\" data-end=\"2388\">\u064a\u062a\u0637\u0644\u0628 UL 1449 \u0623\u064a\u0636\u064b\u0627 \u062d\u0645\u0627\u064a\u0629 \u0645\u0646\u0627\u0633\u0628\u0629 \u0645\u0646 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0632\u0627\u0626\u062f \u0644\u0645\u0646\u0639 \u0627\u0631\u062a\u0641\u0627\u0639 \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 SPD \u0623\u0648 \u0627\u0644\u0641\u0634\u0644 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u0623\u062d\u062f\u0627\u062b \u0627\u0644\u0642\u0627\u0633\u064a\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2395\" data-end=\"2660\"><strong data-start=\"2397\" data-end=\"2409\">\u0646\u0635\u064a\u062d\u0629 \u0644\u0644\u0645\u062d\u062a\u0631\u0641\u064a\u0646:<\/strong> \u062a\u062d\u0642\u0642 \u062f\u0627\u0626\u0645\u064b\u0627 \u0645\u0646 \u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644 \u0644\u0640 <strong data-start=\"2440\" data-end=\"2521\">IEC 61643-11 (\u0623\u062c\u0647\u0632\u0629 SPD \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0628\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u062a\u0631\u062f\u062f)\u060c IEC 61643-31 (\u0623\u062c\u0647\u0632\u0629 SPD \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629\/\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631)\u060c, <\/strong>\u0623\u0648 UL 1449 (\u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629) \u062d\u0633\u0628 \u0645\u0646\u0637\u0642\u062a\u0643. \u064a\u0624\u062f\u064a \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0648\u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0627\u0644\u0635\u062d\u064a\u062d\u0627\u0646 \u0625\u0644\u0649 \u0632\u064a\u0627\u062f\u0629 \u0639\u0645\u0631 SPD \u0625\u0644\u0649 \u0623\u0642\u0635\u0649 \u062d\u062f \u0648\u0636\u0645\u0627\u0646 \u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0646\u0638\u0627\u0645 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0628\u0623\u0643\u0645\u0644\u0647.<\/p>\r\n\r\n<h2 data-start=\"6325\" data-end=\"6343\">7. \u0627\u0644\u0627\u0633\u062a\u0646\u062a\u0627\u062c<\/h2>\r\n<p data-start=\"6344\" data-end=\"6467\">\u0623\u0646\u0648\u0627\u0639 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u063a\u064a\u0631 \u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u062a\u0628\u062f\u064a\u0644 \u2014 \u064a\u0644\u0639\u0628 \u0643\u0644 \u0645\u0646\u0647\u0627 \u062f\u0648\u0631\u064b\u0627 \u0641\u0631\u064a\u062f\u064b\u0627 \u0641\u064a \u0627\u0644\u062f\u0641\u0627\u0639 \u0639\u0646 \u0627\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629.<\/p>\r\n\r\n<ul data-start=\"6468\" data-end=\"6720\">\r\n \t<li data-start=\"6468\" data-end=\"6524\">\r\n<p data-start=\"6470\" data-end=\"6524\"><strong data-start=\"6470\" data-end=\"6480\">\u0627\u0644\u0646\u0648\u0639 1<\/strong> \u0627\u0644\u062f\u0631\u0648\u0639 \u0636\u062f \u0636\u0631\u0628\u0627\u062a \u0627\u0644\u0628\u0631\u0642 \u0627\u0644\u0645\u0628\u0627\u0634\u0631\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6525\" data-end=\"6581\">\r\n<p data-start=\"6527\" data-end=\"6581\"><strong data-start=\"6527\" data-end=\"6537\">\u0627\u0644\u0646\u0648\u0639 2<\/strong> \u0647\u0648 \u0627\u0644\u0639\u0645\u0648\u062f \u0627\u0644\u0641\u0642\u0631\u064a \u0644\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6582\" data-end=\"6638\">\r\n<p data-start=\"6584\" data-end=\"6638\"><strong data-start=\"6584\" data-end=\"6594\">\u0627\u0644\u0646\u0648\u0639 3<\/strong> \u064a\u062d\u0645\u064a \u0623\u062c\u0647\u0632\u062a\u0643 \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a\u0629 \u0627\u0644\u0623\u0643\u062b\u0631 \u062d\u0633\u0627\u0633\u064a\u0629.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6639\" data-end=\"6720\">\r\n<p data-start=\"6641\" data-end=\"6720\"><strong data-start=\"6641\" data-end=\"6672\">\u0645\u062c\u0645\u0648\u0639\u0627\u062a \u0648PV\/DC SPDs<\/strong> \u062a\u063a\u0637\u064a\u0629 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0645\u062a\u062e\u0635\u0635\u0629 \u0648\u0627\u0644\u0645\u062a\u062c\u062f\u062f\u0629.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6722\" data-end=\"6892\">\u0645\u0646 \u062e\u0644\u0627\u0644 \u0641\u0647\u0645 \u0623\u0646\u0648\u0627\u0639 SPD \u0648\u0645\u0639\u0627\u064a\u064a\u0631\u0647\u0627 \u0648\u0642\u0648\u0627\u0639\u062f \u0627\u0644\u062a\u062b\u0628\u064a\u062a\u060c \u064a\u0645\u0643\u0646\u0643 \u062a\u0635\u0645\u064a\u0645 \u062f\u0641\u0627\u0639 \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0637\u0628\u0642\u0627\u062a \u064a\u0636\u0645\u0646 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0648\u064a\u0642\u0644\u0644 \u0648\u0642\u062a \u0627\u0644\u062a\u0648\u0642\u0641 \u0639\u0646 \u0627\u0644\u0639\u0645\u0644 \u0648\u064a\u062d\u0645\u064a \u0627\u0644\u0627\u0633\u062a\u062b\u0645\u0627\u0631\u0627\u062a.<\/p>","protected":false},"featured_media":2160,"parent":0,"menu_order":125,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2163","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"Discover the different Types of Surge Protection Devices (SPDs) \u2014 Type 1, Type 2, Type 3, combo units, and PV\/DC solutions. Backed by IEC and UL standards, this guide explains how each SPD works, where to install it, and how to coordinate them for reliable protection of homes, businesses, and solar systems.","txt":"<h2 data-start=\"384\" data-end=\"404\">1. Introduction<\/h2>\r\n<p data-start=\"405\" data-end=\"685\">Power surges are silent killers in modern electrical systems. From residential electronics to industrial automation and solar plants, even a single transient overvoltage can cause downtime, costly repairs, or equipment failure. The solution? <strong data-start=\"647\" data-end=\"683\"><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\">Surge Protection Devices (SPDs)<\/a><\/span>.<\/strong><\/p>\r\n<p data-start=\"687\" data-end=\"952\">In this guide, we\u2019ll break down the different Types of Surge Protection Devices, explain how they work, and compare their applications. By the end, you\u2019ll know exactly which SPD types fit your system \u2014 whether it\u2019s a home, data center, or PV installation.<\/p>\r\n\r\n<h2 data-start=\"959\" data-end=\"1001\">2. What Are Surge Protection Devices?<\/h2>\r\n<p data-start=\"1002\" data-end=\"1283\">A <a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\"><strong data-start=\"1004\" data-end=\"1037\">Surge Protection Device (SPD)<\/strong> <\/span><\/a>is a safety component installed in an electrical system to limit transient overvoltages caused by lightning strikes, switching events, or utility disturbances. It works by diverting surge energy safely to earth, protecting connected equipment.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\">Think of an SPD as a pressure-release valve: it doesn\u2019t stop the surge from happening, but it channels the excess energy away from sensitive electronics.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\"><a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/\" rel=\"attachment wp-att-2160\"><img class=\"alignnone wp-image-2160 \" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/BR-20-4P-1Type-2-Surge-Protection-Device.jpg-1024x1024.webp\" alt=\"Types of Surge Protection Devices\" width=\"705\" height=\"705\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"1447\" data-end=\"1486\">3. How Does Surge Protection Work?<\/h2>\r\n<p data-start=\"1487\" data-end=\"1734\">SPDs rely on components such as Metal Oxide Varistors (MOVs), Gas Discharge Tubes (GDTs), and spark gaps. When voltage exceeds a safe threshold (Uc), the SPD switches into conduction mode, clamping the surge to a lower residual voltage (Up).<\/p>\r\n<p data-start=\"1736\" data-end=\"1767\">Key parameters to understand:<\/p>\r\n\r\n<ul data-start=\"1768\" data-end=\"2141\">\r\n \t<li data-start=\"1768\" data-end=\"1853\">\r\n<p data-start=\"1770\" data-end=\"1853\"><strong data-start=\"1770\" data-end=\"1816\">Uc (Maximum Continuous Operating Voltage):<\/strong> the normal voltage the SPD can handle.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1854\" data-end=\"1945\">\r\n<p data-start=\"1856\" data-end=\"1945\"><strong data-start=\"1856\" data-end=\"1890\">Up (Voltage Protection Level):<\/strong> clamping voltage that downstream devices will \u201csee.\u201d<\/p>\r\n<\/li>\r\n \t<li data-start=\"1946\" data-end=\"2048\">\r\n<p data-start=\"1948\" data-end=\"2048\"><strong data-start=\"1948\" data-end=\"2000\">In \/ Imax (Nominal &amp; Maximum Discharge Current):<\/strong> how much surge current the device can absorb.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2049\" data-end=\"2141\">\r\n<p data-start=\"2051\" data-end=\"2141\"><strong data-start=\"2051\" data-end=\"2078\">Iimp (Impulse Current):<\/strong> specific to Type 1, representing lightning strike waveforms.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<a href=\"https:\/\/www.britecelectric.com\/attachment\/spd-install\/\" rel=\"attachment wp-att-2159\"><img class=\"alignnone size-full wp-image-2159\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPD-install.jpg\" alt=\"\" width=\"745\" height=\"609\" \/><\/a>\r\n<h2 data-start=\"486\" data-end=\"527\">4. Types of Surge Protection Devices<\/h2>\r\n<p data-start=\"529\" data-end=\"821\">Understanding SPD types is the key to designing layered surge protection. International standards such as <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"639\" data-end=\"660\">IEC 61643-11 (AC)<\/strong><\/a>, <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/26931\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"662\" data-end=\"686\">IEC 61643-31 (DC\/PV)<\/strong><\/a>, and <a href=\"https:\/\/www.nemasurge.org\/ul-1449-transient-voltage-surge-suppressors\/\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"692\" data-end=\"719\">UL 1449 (North America)<\/strong> <\/a>define different classes based on test waveforms, energy capability, and installation location.<\/p>\r\n<p data-start=\"823\" data-end=\"975\">Below, we break down the different types of surge protection devices (SPDs) you\u2019ll encounter, with their technical roles and application guidance.<\/p>\r\n\r\n<h3 data-start=\"982\" data-end=\"1038\">4.1 Type 1 SPDs (IEC 61643-11, Class I, 10\/350 \u00b5s)<\/h3>\r\n<ul data-start=\"1039\" data-end=\"1975\">\r\n \t<li data-start=\"1039\" data-end=\"1201\">\r\n<p data-start=\"1041\" data-end=\"1201\"><strong data-start=\"1041\" data-end=\"1056\">Definition:<\/strong> Designed to discharge partial lightning current. Tested with the 10\/350 \u00b5s impulse waveform (Iimp) representing a direct lightning strike.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1202\" data-end=\"1383\">\r\n<p data-start=\"1204\" data-end=\"1383\"><strong data-start=\"1204\" data-end=\"1227\">Installation Point:<\/strong> Service entrance, typically upstream of the main distribution board. Often used in buildings equipped with an external Lightning Protection System (LPS).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1384\" data-end=\"1658\">\r\n<p data-start=\"1386\" data-end=\"1407\"><strong data-start=\"1386\" data-end=\"1405\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"1410\" data-end=\"1658\">\r\n \t<li data-start=\"1410\" data-end=\"1475\">\r\n<p data-start=\"1412\" data-end=\"1475\">Iimp (Impulse Current): rated lightning current capacity.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1478\" data-end=\"1571\">\r\n<p data-start=\"1480\" data-end=\"1571\">Uc (Maximum Continuous Operating Voltage): ensures no damage during normal operation.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1574\" data-end=\"1658\">\r\n<p data-start=\"1576\" data-end=\"1658\">Up (Voltage Protection Level): residual voltage seen by downstream circuits.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1659\" data-end=\"1731\">\r\n<p data-start=\"1661\" data-end=\"1731\"><strong data-start=\"1661\" data-end=\"1681\">Technology Used:<\/strong> Spark gaps, heavy-duty MOVs, or hybrid designs.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1732\" data-end=\"1862\">\r\n<p data-start=\"1734\" data-end=\"1750\"><strong data-start=\"1734\" data-end=\"1748\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"1753\" data-end=\"1862\">\r\n \t<li data-start=\"1753\" data-end=\"1806\">\r\n<p data-start=\"1755\" data-end=\"1806\">Industrial facilities, telecom towers, hospitals.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1809\" data-end=\"1862\">\r\n<p data-start=\"1811\" data-end=\"1862\">Tall buildings in high lightning density regions.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1863\" data-end=\"1975\">\r\n<p data-start=\"1865\" data-end=\"1975\"><strong data-start=\"1865\" data-end=\"1877\">Example:<\/strong> A factory with rooftop lightning rods will require Type 1 SPDs at the main incoming supply.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1982\" data-end=\"2037\">4.2 Type 2 SPDs (IEC 61643-11, Class II, 8\/20 \u00b5s)<\/h3>\r\n<ul data-start=\"2038\" data-end=\"2824\">\r\n \t<li data-start=\"2038\" data-end=\"2167\">\r\n<p data-start=\"2040\" data-end=\"2167\"><strong data-start=\"2040\" data-end=\"2055\">Definition:<\/strong> Handles switching surges and indirect lightning effects. Tested with 8\/20 \u00b5s current waveform (In, Imax).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2168\" data-end=\"2248\">\r\n<p data-start=\"2170\" data-end=\"2248\"><strong data-start=\"2170\" data-end=\"2193\">Installation Point:<\/strong> Main or sub-distribution boards inside the facility.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2249\" data-end=\"2496\">\r\n<p data-start=\"2251\" data-end=\"2272\"><strong data-start=\"2251\" data-end=\"2270\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"2275\" data-end=\"2496\">\r\n \t<li data-start=\"2275\" data-end=\"2347\">\r\n<p data-start=\"2277\" data-end=\"2347\">In (Nominal Discharge Current): endurance under multiple surges.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2350\" data-end=\"2417\">\r\n<p data-start=\"2352\" data-end=\"2417\">Imax (Maximum Discharge Current): maximum surge capability.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2420\" data-end=\"2496\">\r\n<p data-start=\"2422\" data-end=\"2496\">Up: must coordinate with both upstream Type 1 and downstream Type 3.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2497\" data-end=\"2578\">\r\n<p data-start=\"2499\" data-end=\"2578\"><strong data-start=\"2499\" data-end=\"2519\">Technology Used:<\/strong> MOV-based modules, often pluggable for easy replacement.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2579\" data-end=\"2716\">\r\n<p data-start=\"2581\" data-end=\"2597\"><strong data-start=\"2581\" data-end=\"2595\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"2600\" data-end=\"2716\">\r\n \t<li data-start=\"2600\" data-end=\"2655\">\r\n<p data-start=\"2602\" data-end=\"2655\">Residential homes, office buildings, retail stores.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2658\" data-end=\"2716\">\r\n<p data-start=\"2660\" data-end=\"2716\">Standard protection in areas with moderate surge risk.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2717\" data-end=\"2824\">\r\n<p data-start=\"2719\" data-end=\"2824\"><strong data-start=\"2719\" data-end=\"2731\">Example:<\/strong> A small office without external LPS would typically use Type 2 SPDs in the main board.<\/p>\r\n<\/li>\r\n<\/ul>\r\nWant a detailed breakdown? Read our full guide: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1021\" data-end=\"1147\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/blog\/what-is-a-type-2-surge-protection-device\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1023\" data-end=\"1145\">What Is a Type 2 Surge Protection Device?<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"2831\" data-end=\"2890\">4.3 Type 3 SPDs (IEC 61643-11, Class III, combo wave)<\/h3>\r\n<ul data-start=\"2891\" data-end=\"3555\">\r\n \t<li data-start=\"2891\" data-end=\"3022\">\r\n<p data-start=\"2893\" data-end=\"3022\"><strong data-start=\"2893\" data-end=\"2908\">Definition:<\/strong> Fine protection for terminal equipment. Tested with combination wave (1.2\/50 \u00b5s voltage + 8\/20 \u00b5s current).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3023\" data-end=\"3126\">\r\n<p data-start=\"3025\" data-end=\"3126\"><strong data-start=\"3025\" data-end=\"3048\">Installation Point:<\/strong> As close as possible to the protected device (socket outlet, device input).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3127\" data-end=\"3273\">\r\n<p data-start=\"3129\" data-end=\"3150\"><strong data-start=\"3129\" data-end=\"3148\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"3153\" data-end=\"3273\">\r\n \t<li data-start=\"3153\" data-end=\"3216\">\r\n<p data-start=\"3155\" data-end=\"3216\">Up: very low clamping level to protect sensitive loads.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3219\" data-end=\"3273\">\r\n<p data-start=\"3221\" data-end=\"3273\">Must be used in coordination with upstream Type 2.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3274\" data-end=\"3348\">\r\n<p data-start=\"3276\" data-end=\"3348\"><strong data-start=\"3276\" data-end=\"3296\">Technology Used:<\/strong> MOVs combined with filters for extra attenuation.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3349\" data-end=\"3435\">\r\n<p data-start=\"3351\" data-end=\"3367\"><strong data-start=\"3351\" data-end=\"3365\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"3370\" data-end=\"3435\">\r\n \t<li data-start=\"3370\" data-end=\"3435\">\r\n<p data-start=\"3372\" data-end=\"3435\">Computers, LED drivers, medical electronics, and control systems.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3436\" data-end=\"3555\">\r\n<p data-start=\"3438\" data-end=\"3555\"><strong data-start=\"3438\" data-end=\"3450\">Example:<\/strong> A hospital MRI machine requires Type 3 SPD near the device, working together with upstream Type 2.<\/p>\r\n<\/li>\r\n<\/ul>\r\nLearn more in our dedicated article: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1474\" data-end=\"1584\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/blog\/what-is-a-type-3-surge-protector\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1476\" data-end=\"1582\">What Is a Type 3 Surge Protector?<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"3562\" data-end=\"3594\">4.4 T1+T2 Combination SPDs<\/h3>\r\n<ul data-start=\"3595\" data-end=\"4178\">\r\n \t<li data-start=\"3595\" data-end=\"3710\">\r\n<p data-start=\"3597\" data-end=\"3710\"><strong data-start=\"3597\" data-end=\"3612\">Definition:<\/strong> A single SPD unit tested for both Class I (10\/350 \u00b5s) and Class II (8\/20 \u00b5s) waveforms.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3711\" data-end=\"3804\">\r\n<p data-start=\"3713\" data-end=\"3804\"><strong data-start=\"3713\" data-end=\"3725\">Benefit:<\/strong> Protects against direct lightning as well as switching surges in one device.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3805\" data-end=\"3895\">\r\n<p data-start=\"3807\" data-end=\"3895\"><strong data-start=\"3807\" data-end=\"3830\">Installation Point:<\/strong> Service entrance when space or budget limits multiple devices.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3896\" data-end=\"4076\">\r\n<p data-start=\"3898\" data-end=\"3914\"><strong data-start=\"3898\" data-end=\"3912\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"3917\" data-end=\"4076\">\r\n \t<li data-start=\"3917\" data-end=\"3996\">\r\n<p data-start=\"3919\" data-end=\"3996\">Medium-sized commercial or residential buildings need compact solutions.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3999\" data-end=\"4076\">\r\n<p data-start=\"4001\" data-end=\"4076\">Sites where coordination between separate Type 1 and Type 2 is difficult.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4077\" data-end=\"4178\">\r\n<p data-start=\"4079\" data-end=\"4178\"><strong data-start=\"4079\" data-end=\"4091\">Example:<\/strong> A shopping mall's main switchboard may install a T1+T2 SPD to simplify protection.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4185\" data-end=\"4217\">4.5 T2+T3 Combination SPDs<\/h3>\r\n<ul data-start=\"4218\" data-end=\"4676\">\r\n \t<li data-start=\"4218\" data-end=\"4299\">\r\n<p data-start=\"4220\" data-end=\"4299\"><strong data-start=\"4220\" data-end=\"4235\">Definition:<\/strong> Hybrid devices are tested for Class II and Class III performance.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4300\" data-end=\"4374\">\r\n<p data-start=\"4302\" data-end=\"4374\"><strong data-start=\"4302\" data-end=\"4314\">Benefit:<\/strong> Provides both distribution-level and terminal protection.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4375\" data-end=\"4477\">\r\n<p data-start=\"4377\" data-end=\"4477\"><strong data-start=\"4377\" data-end=\"4400\">Installation Point:<\/strong> Sub-panels close to sensitive loads, especially if cable runs exceed 10 m.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4478\" data-end=\"4559\">\r\n<p data-start=\"4480\" data-end=\"4496\"><strong data-start=\"4480\" data-end=\"4494\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"4499\" data-end=\"4559\">\r\n \t<li data-start=\"4499\" data-end=\"4559\">\r\n<p data-start=\"4501\" data-end=\"4559\">Data centers, server rooms, industrial control cabinets.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4560\" data-end=\"4676\">\r\n<p data-start=\"4562\" data-end=\"4676\"><strong data-start=\"4562\" data-end=\"4574\">Example:<\/strong> A factory automation line with long cable runs to PLCs can use a T2+T3 SPD near the PLC panels.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4683\" data-end=\"4734\">4.6 Type 4 SPDs (UL 1449, North America only)<\/h3>\r\n<ul data-start=\"4735\" data-end=\"5324\">\r\n \t<li data-start=\"4735\" data-end=\"4856\">\r\n<p data-start=\"4737\" data-end=\"4856\"><strong data-start=\"4737\" data-end=\"4762\">Definition (UL 1449):<\/strong> Component assemblies not intended as stand-alone devices but integrated into OEM equipment.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4857\" data-end=\"5012\">\r\n<p data-start=\"4859\" data-end=\"4879\"><strong data-start=\"4859\" data-end=\"4877\">Subcategories:<\/strong><\/p>\r\n\r\n<ul data-start=\"4882\" data-end=\"5012\">\r\n \t<li data-start=\"4882\" data-end=\"4965\">\r\n<p data-start=\"4884\" data-end=\"4965\">Type 4 Component Assemblies (CA): pre-packaged SPD parts for manufacturers.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4968\" data-end=\"5012\">\r\n<p data-start=\"4970\" data-end=\"5012\">Type 5 Components: raw MOVs or GDTs.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5013\" data-end=\"5099\">\r\n<p data-start=\"5015\" data-end=\"5099\"><strong data-start=\"5015\" data-end=\"5038\">Installation Point:<\/strong> Inside appliances, power supplies, or custom-built panels.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5100\" data-end=\"5230\">\r\n<p data-start=\"5102\" data-end=\"5118\"><strong data-start=\"5102\" data-end=\"5116\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"5121\" data-end=\"5230\">\r\n \t<li data-start=\"5121\" data-end=\"5166\">\r\n<p data-start=\"5123\" data-end=\"5166\">OEMs designing surge-protected equipment.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5169\" data-end=\"5230\">\r\n<p data-start=\"5171\" data-end=\"5230\">Specialized industrial gear in the North American market.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5231\" data-end=\"5324\">\r\n<p data-start=\"5233\" data-end=\"5324\"><strong data-start=\"5233\" data-end=\"5245\">Example:<\/strong> A UPS manufacturer integrates Type 4 SPD assemblies inside its products.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5331\" data-end=\"5382\">4.7 PV\/DC SPDs (IEC 61643-31, up to 1500 VDC)<\/h3>\r\n<ul data-start=\"5383\" data-end=\"6082\">\r\n \t<li data-start=\"5383\" data-end=\"5474\">\r\n<p data-start=\"5385\" data-end=\"5474\"><strong data-start=\"5385\" data-end=\"5400\">Definition:<\/strong> Surge protection devices designed for photovoltaic and DC circuits.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5475\" data-end=\"5555\">\r\n<p data-start=\"5477\" data-end=\"5555\"><strong data-start=\"5477\" data-end=\"5496\">Test Standards:<\/strong> IEC 61643-31 specifies requirements for DC applications.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5556\" data-end=\"5647\">\r\n<p data-start=\"5558\" data-end=\"5647\"><strong data-start=\"5558\" data-end=\"5581\">Installation Point:<\/strong> PV array combiner boxes, inverters, and DC distribution boards.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5648\" data-end=\"5876\">\r\n<p data-start=\"5650\" data-end=\"5671\"><strong data-start=\"5650\" data-end=\"5669\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"5674\" data-end=\"5876\">\r\n \t<li data-start=\"5674\" data-end=\"5740\">\r\n<p data-start=\"5676\" data-end=\"5740\">Ucpv: rated continuous PV voltage (600 V, 1000 V, 1500 V).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5743\" data-end=\"5796\">\r\n<p data-start=\"5745\" data-end=\"5796\">In \/ Imax: surge current handling on the DC side.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5799\" data-end=\"5876\">\r\n<p data-start=\"5801\" data-end=\"5876\">Response time: must be fast enough for semiconductor-based inverters.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5877\" data-end=\"5976\">\r\n<p data-start=\"5879\" data-end=\"5895\"><strong data-start=\"5879\" data-end=\"5893\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"5898\" data-end=\"5976\">\r\n \t<li data-start=\"5898\" data-end=\"5976\">\r\n<p data-start=\"5900\" data-end=\"5976\">Utility-scale solar farms, rooftop PV systems, battery storage facilities.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5977\" data-end=\"6082\">\r\n<p data-start=\"5979\" data-end=\"6082\"><strong data-start=\"5979\" data-end=\"5991\">Example:<\/strong> A 1500 VDC solar farm will need <a href=\"https:\/\/www.britecelectric.com\/product_category\/pv-surge-protection-type-1-type-2\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"6024\" data-end=\"6041\">T1+T2 PV SPDs<\/strong><\/a> at combiner boxes and inverter inputs.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6089\" data-end=\"6304\"><strong data-start=\"6091\" data-end=\"6115\">Pro Tip for readers:<\/strong> Always use a <em data-start=\"6129\" data-end=\"6153\">coordinated SPD system<\/em>. Type 1 at the entrance, Type 2 at sub-panels, and Type 3 close to critical loads. For PV, add Type 2 or T1+T2 DC SPDs as specified by IEC 61643-31.<\/p>\r\n\r\n<h2 data-start=\"3151\" data-end=\"3197\">5. Type 1 vs Type 2 vs Type 3 SPD Devices<\/h2>\r\n<p data-start=\"3199\" data-end=\"3436\">If you want a deeper dive, check our dedicated blog on this topic here:<br data-start=\"3270\" data-end=\"3273\" \/><a class=\"\" href=\"https:\/\/www.britecelectric.com\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\" target=\"_blank\" rel=\"noopener\" data-start=\"3276\" data-end=\"3434\"><em><strong>Difference Between Type 1, Type 2, and Type 3 SPDs<\/strong><\/em><\/a><\/p>\r\n<p data-start=\"3438\" data-end=\"3504\">Here\u2019s a quick comparison to help you choose the right SPD type:<\/p>\r\n\r\n<table>\r\n<thead>\r\n<tr>\r\n<th>Attribute<\/th>\r\n<th><strong>Type 1 SPD<\/strong><\/th>\r\n<th><strong>Type 2 SPD<\/strong><\/th>\r\n<th><strong>Type 3 SPD<\/strong><\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>Tested Standard<\/strong><\/td>\r\n<td>IEC 61643-11 Class I (10\/350 \u00b5s) + dual-rated UL Type 1\/2<\/td>\r\n<td>IEC 61643-11 Class II (8\/20 \u00b5s) + UL Type 2<\/td>\r\n<td>IEC 61643-11 Class III (combination wave) + UL Type 3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Typical Location<\/strong><\/td>\r\n<td>Service entrance \/ Main switchboard<\/td>\r\n<td>Inside distribution boards\/sub-panels<\/td>\r\n<td>Within 1 m of critical loads (computers, drivers, medical gear)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Primary Function<\/strong><\/td>\r\n<td>Handle direct lightning current; protect building entrance<\/td>\r\n<td>Handle modular surges from switching, fault arcs, etc.<\/td>\r\n<td>Suppress residual energy for sensitive electronics.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Parameter Focus<\/strong><\/td>\r\n<td>High impedance; Uc \u2265 system voltage; Up coordination<\/td>\r\n<td>In Imax, Up cascading with upstream\/downstream SPDs<\/td>\r\n<td>Ultra-low Up; precise clamping to protect sensitive loads<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Installation Note<\/strong><\/td>\r\n<td>Needs large wiring (\u226516 mm\u00b2); can be installed without upstream OCPD; must be coordinated with Type 2<\/td>\r\n<td>Requires upstream overcurrent protection; wiring \u22656 mm\u00b2<\/td>\r\n<td>Very close to load; supplement to upstream Type 2<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Use Cases<\/strong><\/td>\r\n<td>Buildings with LPS, tall structures, and high lightning zones<\/td>\r\n<td>Most homes, commercial facilities, and industrial sub-panels<\/td>\r\n<td>PC clusters, PLC racks, LED\/medical systems<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h4 data-start=\"1155\" data-end=\"1168\">Overview<\/h4>\r\n<ul data-start=\"1183\" data-end=\"1421\">\r\n \t<li data-start=\"1183\" data-end=\"1258\">\r\n<p data-start=\"1185\" data-end=\"1258\"><strong data-start=\"1185\" data-end=\"1200\">Type 1 SPDs<\/strong> handle high-energy, direct lightning strokes (10\/350 \u00b5s).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1259\" data-end=\"1334\">\r\n<p data-start=\"1261\" data-end=\"1334\"><strong data-start=\"1261\" data-end=\"1276\">Type 2 SPDs<\/strong> mitigate switching surges and indirect strikes (8\/20 \u00b5s).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1335\" data-end=\"1421\">\r\n<p data-start=\"1337\" data-end=\"1421\"><strong data-start=\"1337\" data-end=\"1352\">Type 3 SPDs<\/strong> protect sensitive equipment at the last mile (combination waveform).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"185\" data-end=\"253\">6. How to Install and Coordinate Surge Protection Devices (SPD)<\/h2>\r\n<p data-start=\"255\" data-end=\"619\">Correct installation is just as critical as selecting the right Types of Surge Protection Devices (SPD). Improper wiring or poor coordination can compromise protection levels, even if the SPD itself meets IEC or UL standards. Based on IEC 61643-11, IEC 61643-31, UL 1449, and our company\u2019s engineering guidelines, here are the key best practices:<\/p>\r\n<p data-start=\"255\" data-end=\"619\"><a href=\"https:\/\/www.britecelectric.com\/attachment\/spds-install\/\" rel=\"attachment wp-att-2167\"><img class=\"alignnone size-large wp-image-2167\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPDs-install-1024x726.jpg\" alt=\"\" width=\"1024\" height=\"726\" \/><\/a><\/p>\r\n\r\n<h3 data-start=\"621\" data-end=\"654\">1. Shortest Connection Rule<\/h3>\r\n<ul data-start=\"655\" data-end=\"917\">\r\n \t<li data-start=\"655\" data-end=\"789\">\r\n<p data-start=\"657\" data-end=\"789\">Keep all SPD connecting leads as short and straight as possible, ideally \u2264 0.5 m (as recommended in our technical manual).<\/p>\r\n<\/li>\r\n \t<li data-start=\"790\" data-end=\"917\">\r\n<p data-start=\"792\" data-end=\"917\">Long leads introduce inductive voltage rise, which increases the residual voltage (Up) seen by the protected equipment.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"919\" data-end=\"950\">2. Correct Conductor Size<\/h3>\r\n<ul data-start=\"951\" data-end=\"1317\">\r\n \t<li data-start=\"951\" data-end=\"1242\">\r\n<p data-start=\"953\" data-end=\"1002\">Use conductors sized according to the SPD type:<\/p>\r\n\r\n<ul data-start=\"1005\" data-end=\"1242\">\r\n \t<li data-start=\"1005\" data-end=\"1089\">\r\n<p data-start=\"1007\" data-end=\"1089\"><strong data-start=\"1007\" data-end=\"1022\">Type 1 SPD:<\/strong> minimum 16 mm\u00b2 copper (high-energy lightning current, Iimp).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1092\" data-end=\"1137\">\r\n<p data-start=\"1094\" data-end=\"1137\"><strong data-start=\"1094\" data-end=\"1109\">Type 2 SPD:<\/strong> minimum 6 mm\u00b2 copper.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1140\" data-end=\"1242\">\r\n<p data-start=\"1142\" data-end=\"1242\"><strong data-start=\"1142\" data-end=\"1157\">Type 3 SPD:<\/strong> follow the manufacturer\u2019s data, typically smaller cross-sections due to lower current.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1243\" data-end=\"1317\">\r\n<p data-start=\"1245\" data-end=\"1317\">Always use copper conductors with low impedance and avoid sharp bends.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1319\" data-end=\"1349\">3. Equipotential Bonding<\/h3>\r\n<ul data-start=\"1350\" data-end=\"1571\">\r\n \t<li data-start=\"1350\" data-end=\"1447\">\r\n<p data-start=\"1352\" data-end=\"1447\">All SPDs must be connected to the same main earthing bar or equipotential bonding system.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1448\" data-end=\"1571\">\r\n<p data-start=\"1450\" data-end=\"1571\">Bonding ensures surge energy is safely discharged to ground, avoiding dangerous potential differences between circuits.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1573\" data-end=\"1598\">4. SPD Coordination<\/h3>\r\n<ul data-start=\"1599\" data-end=\"2069\">\r\n \t<li data-start=\"1599\" data-end=\"1738\">\r\n<p data-start=\"1601\" data-end=\"1738\">Voltage Protection Level (Up) Hierarchy: Upstream SPDs (Type 1) should always have a higher Up than downstream SPDs (Type 2\/3).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1739\" data-end=\"1907\">\r\n<p data-start=\"1741\" data-end=\"1907\">Distance Rule: If the cable between SPDs and protected loads is longer than 10 m, install an additional downstream SPD (e.g., Type 3) for better protection.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1908\" data-end=\"2069\">\r\n<p data-start=\"1910\" data-end=\"2069\">Parallel Coordination: For multi-stage protection (Type 1 + Type 2 + Type 3), ensure proper energy distribution so that no single device is overstressed.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2071\" data-end=\"2105\">5. Back-Up Protection (OCPD)<\/h3>\r\n<ul data-start=\"2106\" data-end=\"2388\">\r\n \t<li data-start=\"2106\" data-end=\"2187\">\r\n<p data-start=\"2108\" data-end=\"2187\">Always use dedicated fuses or circuit breakers to protect the SPD itself.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2188\" data-end=\"2271\">\r\n<p data-start=\"2190\" data-end=\"2271\">Our manual specifies back-up fuse ratings depending on SPD model and Imax\/Iimp.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2272\" data-end=\"2388\">\r\n<p data-start=\"2274\" data-end=\"2388\">UL 1449 also requires proper overcurrent protection to prevent SPD overheating or failure during extreme events.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2395\" data-end=\"2660\"><strong data-start=\"2397\" data-end=\"2409\">Pro Tip:<\/strong> Always verify compliance with <strong data-start=\"2440\" data-end=\"2521\">IEC 61643-11 (AC SPDs), IEC 61643-31 (PV\/DC SPDs), <\/strong>or UL 1449 (North America) depending on your region. Correct installation and coordination maximize SPD lifetime and ensure safety of the entire electrical system.<\/p>\r\n\r\n<h2 data-start=\"6325\" data-end=\"6343\">7. Conclusion<\/h2>\r\n<p data-start=\"6344\" data-end=\"6467\">Types of Surge Protection Devices are not interchangeable \u2014 each plays a unique role in defending electrical systems.<\/p>\r\n\r\n<ul data-start=\"6468\" data-end=\"6720\">\r\n \t<li data-start=\"6468\" data-end=\"6524\">\r\n<p data-start=\"6470\" data-end=\"6524\"><strong data-start=\"6470\" data-end=\"6480\">Type 1<\/strong> shields against direct lightning strikes.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6525\" data-end=\"6581\">\r\n<p data-start=\"6527\" data-end=\"6581\"><strong data-start=\"6527\" data-end=\"6537\">Type 2<\/strong> is the workhorse for distribution boards.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6582\" data-end=\"6638\">\r\n<p data-start=\"6584\" data-end=\"6638\"><strong data-start=\"6584\" data-end=\"6594\">Type 3<\/strong> protects your most sensitive electronics.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6639\" data-end=\"6720\">\r\n<p data-start=\"6641\" data-end=\"6720\"><strong data-start=\"6641\" data-end=\"6672\">Combinations and PV\/DC SPDs<\/strong> cover specialized and renewable applications.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6722\" data-end=\"6892\">By understanding SPD types, their standards, and installation rules, you can design a layered defense that ensures safety, minimizes downtime, and protects investments.<\/p>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/ar\/wp-json\/wp\/v2\/blog\/2163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/ar\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/ar\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/ar\/wp-json\/wp\/v2\/media\/2160"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/ar\/wp-json\/wp\/v2\/media?parent=2163"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/ar\/wp-json\/wp\/v2\/blog_category?post=2163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}