{"id":862,"date":"2023-12-15T15:29:02","date_gmt":"2023-12-15T07:29:02","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=862"},"modified":"2024-09-05T16:40:47","modified_gmt":"2024-09-05T08:40:47","slug":"surge-protection-devices-surge-arresters-spd","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/el\/blog\/surge-protection-devices-surge-arresters-spd\/","title":{"rendered":"\u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03b5\u03c1\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 (\u0391\u03c0\u03b1\u03b3\u03c9\u03b3\u03b5\u03af\u03c2 \u03c5\u03c0\u03b5\u03c1\u03c4\u03ac\u03c3\u03b5\u03c9\u03bd) (SPD)"},"content":{"rendered":"The Surge Protection Device (SPD) is a component of the electrical installation protection system.\r\n\r\nThis device is connected in parallel on the power supply circuit of the loads that it has to protect (see Fig. J17). It can also be used at all levels of the power supply network.\r\n\r\nThis is the most commonly used and most efficient type of overvoltage protection.\r\n\r\n<img class=\"size-full wp-image-17898 aligncenter\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18.png\" sizes=\"(max-width: 440px) 100vw, 440px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18.png 440w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18-400x269.png 400w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18-150x101.png 150w\" alt=\"\" width=\"440\" height=\"296\" \/>\r\n\r\n\u039f\u03b9 \u03b5\u03c0\u03b9\u03c3\u03c4\u03ae\u03bc\u03bf\u03bd\u03b5\u03c2 \u03ad\u03c7\u03bf\u03c5\u03bd \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03bf\u03c0\u03bf\u03b9\u03ae\u03c3\u03b5\u03b9 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03ad\u03c2 \u03bc\u03b5\u03bb\u03ad\u03c4\u03b5\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b1 \u03c7\u03b1\u03c1\u03b1\u03ba\u03c4\u03b7\u03c1\u03b9\u03c3\u03c4\u03b9\u03ba\u03ac \u03ba\u03b1\u03b9 \u03c4\u03b9\u03c2 \u03b5\u03c0\u03b9\u03c0\u03c4\u03ce\u03c3\u03b5\u03b9\u03c2 \u03c4\u03c9\u03bd \u03ba\u03b5\u03c1\u03b1\u03c5\u03bd\u03ce\u03bd \u03b5\u03b4\u03ce \u03ba\u03b1\u03b9 \u03c7\u03c1\u03cc\u03bd\u03b9\u03b1 \u03ba\u03b1\u03b9 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03b1\u03c0\u03c4\u03cd\u03be\u03b5\u03b9 \u03b1\u03bd\u03ac\u03bb\u03bf\u03b3\u03b1 \u03c4\u03b5\u03c7\u03bd\u03bf\u03bb\u03bf\u03b3\u03b9\u03ba\u03ac \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03b1. \u03a3\u03ae\u03bc\u03b5\u03c1\u03b1, \u03bf\u03b9 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03b1\u03c5\u03c4\u03ce\u03bd \u03c4\u03c9\u03bd \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03c9\u03bd \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bd \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03bd\u03b1 \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03bf\u03c0\u03bf\u03b9\u03b7\u03b8\u03bf\u03cd\u03bd \u03bc\u03b5 \u03c0\u03c1\u03bf\u03c3\u03bf\u03bc\u03bf\u03af\u03c9\u03c3\u03b7 \u03ba\u03b5\u03c1\u03b1\u03c5\u03bd\u03bf\u03cd \u03c3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03c0\u03bb\u03b1\u03af\u03c3\u03b9\u03bf.\r\n\r\n<strong>\u03a4\u03cd\u03c0\u03bf\u03b9 \u03ba\u03c5\u03bc\u03ac\u03c4\u03c9\u03bd \u03ba\u03b5\u03c1\u03b1\u03c5\u03bd\u03bf\u03cd:<\/strong>\r\n\r\n\u03a4\u03bf \u03c7\u03c4\u03cd\u03c0\u03b7\u03bc\u03b1 \u03c4\u03bf\u03c5 \u03ba\u03b5\u03c1\u03b1\u03c5\u03bd\u03bf\u03cd \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03bc\u03b5\u03bb\u03b5\u03c4\u03b7\u03b8\u03b5\u03af \u03c3\u03b5 \u03b4\u03cd\u03bf \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03b5\u03c4\u03b9\u03ba\u03ac \u03bc\u03ae\u03ba\u03b7 \u03ba\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2.\r\n<ol>\r\n \t<li><strong>Direct Lightning Strike 10 \/ 350\u03bcs:<\/strong><\/li>\r\n<\/ol>\r\nImpulse currents in a waveform of 10\/350 \u03bcs occur in direct lightning strikes. This pulse rapid voltage increase releases great power with a large current pulse.\r\n\r\nToday, External Lightning Protection System materials and Type 1 \/ Class I type Surge Arrester circuit elements are tested according to these criteria according to the standards.\r\n<ol start=\"2\">\r\n \t<li><strong>\u039a\u03b5\u03c1\u03b1\u03c5\u03bd\u03cc\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03bc\u03b5\u03c4\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 \u03c3\u03b5 \u03b1\u03c0\u03bf\u03bc\u03b1\u03ba\u03c1\u03c5\u03c3\u03bc\u03ad\u03bd\u03b7 \u03c0\u03b5\u03c1\u03b9\u03bf\u03c7\u03ae 8 \/ 20 \u03bcs:<\/strong><\/li>\r\n<\/ol>\r\nLightning strikes at a distant location and impulse currents with switching voltages 8\/20 \u03bcs waveform occur.\r\n\r\nThe energy content of this pulse is significantly lower than the lightning test current\u2019s pulse current wave of 10\/350 \u03bcs. Type 2 \/ Class II and Type 3 \/ Class III type Surge Protector (Surge Arrester) circuit elements are tested according to these criteria according to the standards.\r\n\r\n<strong>\u03a0\u03c1\u03cc\u03c4\u03c5\u03c0\u03b1<\/strong>\r\n\r\n\u039c\u03b5\u03c1\u03b9\u03ba\u03ac \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03b1 \u03c0\u03bf\u03c5 \u03b1\u03bd\u03b1\u03c6\u03ad\u03c1\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c5\u03c7\u03bd\u03ac \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03bf\u03c5\u03bd:\r\n<ul>\r\n \t<li>IEC 61643-11 \u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7 \u03c7\u03b1\u03bc\u03b7\u03bb\u03ae\u03c2 \u03c4\u03ac\u03c3\u03b7\u03c2 \u2013 \u039c\u03ad\u03c1\u03bf\u03c2 11: \u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03b5\u03c1\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c3\u03c5\u03bd\u03b4\u03b5\u03b4\u03b5\u03bc\u03ad\u03bd\u03b5\u03c2 \u03c3\u03b5 \u03c3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03b9\u03c3\u03c7\u03cd\u03bf\u03c2 \u03c7\u03b1\u03bc\u03b7\u03bb\u03ae\u03c2 \u03c4\u03ac\u03c3\u03b7\u03c2 \u2013 \u0391\u03c0\u03b1\u03b9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03ba\u03b1\u03b9 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf\u03b9 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2 (\u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03b8\u03b9\u03c3\u03c4\u03ac \u03c4\u03bf IEC 61643-1)<\/li>\r\n \t<li>IEC 61643-21 \u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7 \u03c7\u03b1\u03bc\u03b7\u03bb\u03ae\u03c2 \u03c4\u03ac\u03c3\u03b7\u03c2 \u2013 \u039c\u03ad\u03c1\u03bf\u03c2 21: \u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03b5\u03c1\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c3\u03c5\u03bd\u03b4\u03b5\u03b4\u03b5\u03bc\u03ad\u03bd\u03b5\u03c2 \u03c3\u03b5 \u03b4\u03af\u03ba\u03c4\u03c5\u03b1 \u03c4\u03b7\u03bb\u03b5\u03c0\u03b9\u03ba\u03bf\u03b9\u03bd\u03c9\u03bd\u03b9\u03ce\u03bd \u03ba\u03b1\u03b9 \u03c3\u03b7\u03bc\u03b1\u03c4\u03bf\u03b4\u03cc\u03c4\u03b7\u03c3\u03b7\u03c2 \u2013 \u0391\u03c0\u03b1\u03b9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03b1\u03c0\u03cc\u03b4\u03bf\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf\u03b9 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2<\/li>\r\n \t<li>IEC 61643-22 \u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7 \u03c7\u03b1\u03bc\u03b7\u03bb\u03ae\u03c2 \u03c4\u03ac\u03c3\u03b7\u03c2 \u2013 \u039c\u03ad\u03c1\u03bf\u03c2 22: \u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03b5\u03c1\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c3\u03c5\u03bd\u03b4\u03b5\u03b4\u03b5\u03bc\u03ad\u03bd\u03b5\u03c2 \u03c3\u03b5 \u03b4\u03af\u03ba\u03c4\u03c5\u03b1 \u03c4\u03b7\u03bb\u03b5\u03c0\u03b9\u03ba\u03bf\u03b9\u03bd\u03c9\u03bd\u03b9\u03ce\u03bd \u03ba\u03b1\u03b9 \u03c3\u03b7\u03bc\u03b1\u03c4\u03bf\u03b4\u03cc\u03c4\u03b7\u03c3\u03b7\u03c2 \u2013 \u0391\u03c1\u03c7\u03ad\u03c2 \u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae\u03c2<\/li>\r\n \t<li>EN 61643-11, 61643-21 \u03ba\u03b1\u03b9 61643-22<\/li>\r\n \t<li>\u03a4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae \u03b1\u03bd\u03b1\u03c6\u03bf\u03c1\u03ac Telcordia Technologies TR-NWT-001011<\/li>\r\n \t<li>ANSI\/IEEE C62.xx<\/li>\r\n \t<li>Underwriters Laboratories (UL) 1449.<\/li>\r\n \t<li>AS\/NZS 1768<\/li>\r\n<\/ul>\r\nEach standard defines different protector characteristics, test vectors, or operational purpose.\r\n\r\nEN 62305 and ANSI\/IEEE C62.xx define what spikes a protector might be expected to divert. EN 61643-11 and 61643-21 specify both the product\u2019s performance and safety requirements. In contrast, the IEC only writes standards and does not certify any particular product as meeting those standards. IEC Standards are used by members of the CB Scheme of international agreements to test and certify products for safety compliance.\r\n\r\nIn addition, the following standards are not standards for standalone surge protectors, but are instead meant for testing surge immunity in electrical and electronic equipment as a whole. Thus, they\u2019re frequently used in the design and test of surge protection circuitry.\r\n<ul>\r\n \t<li>IEC 61000-4-2 \u0394\u03bf\u03ba\u03b9\u03bc\u03ae \u03b1\u03c4\u03c1\u03c9\u03c3\u03af\u03b1\u03c2 \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03b5\u03ba\u03ba\u03ad\u03bd\u03c9\u03c3\u03b7\u03c2<\/li>\r\n \t<li>IEC 61000-4-4 \u0397\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ae \u03b3\u03c1\u03ae\u03b3\u03bf\u03c1\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03b1\u03bd\u03bf\u03c3\u03af\u03b1\u03c2 \u03bc\u03b5\u03c4\u03b1\u03b2\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2\/\u03ad\u03ba\u03c1\u03b7\u03be\u03b7\u03c2<\/li>\r\n \t<li>IEC 61000-4-5 \u0394\u03bf\u03ba\u03b9\u03bc\u03ae \u03b1\u03bd\u03bf\u03c3\u03af\u03b1\u03c2 \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7\u03c2<\/li>\r\n<\/ul>\r\n<strong>\u0391\u03c1\u03c7\u03ae<\/strong>\r\n\r\n\u03a4\u03bf SPD \u03ad\u03c7\u03b5\u03b9 \u03c3\u03c7\u03b5\u03b4\u03b9\u03b1\u03c3\u03c4\u03b5\u03af \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bf\u03c1\u03af\u03b6\u03b5\u03b9 \u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03bf\u03b4\u03b9\u03ba\u03ae \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7 \u03b1\u03c4\u03bc\u03bf\u03c3\u03c6\u03b1\u03b9\u03c1\u03b9\u03ba\u03ae\u03c2 \u03c0\u03c1\u03bf\u03ad\u03bb\u03b5\u03c5\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03b5\u03ba\u03c4\u03c1\u03ad\u03c0\u03b5\u03b9 \u03c4\u03b1 \u03ba\u03cd\u03bc\u03b1\u03c4\u03b1 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c3\u03c4\u03b7 \u03b3\u03b7, \u03ad\u03c4\u03c3\u03b9 \u03ce\u03c3\u03c4\u03b5 \u03bd\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bf\u03c1\u03af\u03b6\u03b5\u03b9 \u03c4\u03bf \u03c0\u03bb\u03ac\u03c4\u03bf\u03c2 \u03b1\u03c5\u03c4\u03ae\u03c2 \u03c4\u03b7\u03c2 \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7\u03c2 \u03c3\u03b5 \u03bc\u03b9\u03b1 \u03c4\u03b9\u03bc\u03ae \u03c0\u03bf\u03c5 \u03b4\u03b5\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c0\u03b9\u03ba\u03af\u03bd\u03b4\u03c5\u03bd\u03b7 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ae \u03b5\u03b3\u03ba\u03b1\u03c4\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03bd \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03cc \u03b4\u03b9\u03b1\u03ba\u03cc\u03c0\u03c4\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03bd \u03b5\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03cc \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5.\r\n\r\n<strong>\u03a4\u03bf SPD \u03b5\u03be\u03b1\u03bb\u03b5\u03af\u03c6\u03b5\u03b9 \u03c4\u03b7\u03bd \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7<\/strong>\r\n<ul>\r\n \t<li>\u03a3\u03b5 \u03ba\u03bf\u03b9\u03bd\u03ae \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1, \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c6\u03ac\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03bf\u03c5\u03b4\u03ad\u03c4\u03b5\u03c1\u03bf\u03c5 \u03ae \u03b3\u03b5\u03af\u03c9\u03c3\u03b7\u03c2.;<\/li>\r\n \t<li>\u03a3\u03b5 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ae \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1, \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c6\u03ac\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03bf\u03c5\u03b4\u03ad\u03c4\u03b5\u03c1\u03bf\u03c5.<\/li>\r\n<\/ul>\r\n\u03a3\u03b5 \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u03c5\u03c0\u03ad\u03c1\u03c4\u03b1\u03c3\u03b7\u03c2 \u03c0\u03bf\u03c5 \u03c5\u03c0\u03b5\u03c1\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03c4\u03bf \u03cc\u03c1\u03b9\u03bf \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u03c2, \u03c4\u03bf SPD\r\n<ul>\r\n \t<li>\u039c\u03b5\u03c4\u03b1\u03c6\u03ad\u03c1\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03c3\u03c4\u03b7 \u03b3\u03b7, \u03c3\u03b5 \u03ba\u03bf\u03b9\u03bd\u03ae \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1.;<\/li>\r\n \t<li>\u039a\u03b1\u03c4\u03b1\u03bd\u03ad\u03bc\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03c3\u03c4\u03bf\u03c5\u03c2 \u03ac\u03bb\u03bb\u03bf\u03c5\u03c2 \u03b5\u03bd\u03b5\u03c1\u03b3\u03bf\u03cd\u03c2 \u03b1\u03b3\u03c9\u03b3\u03bf\u03cd\u03c2, \u03c3\u03b5 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ae \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1.<\/li>\r\n<\/ul>\r\n<strong>\u039f\u03b9 \u03c4\u03c1\u03b5\u03b9\u03c2 \u03c4\u03cd\u03c0\u03bf\u03b9 SPD<\/strong>\r\n\r\n<strong>\u03a4\u03cd\u03c0\u03bf\u03c2 1 SPD<\/strong>\r\n\r\nThe Type 1 SPD is recommended in the specific case of service-sector and industrial buildings, protected by a lightning protection system or a meshed cage.\r\n\r\nIt protects electrical installations against direct lightning strokes. It can discharge the back-current from lightning spreading from the earth conductor to the network conductors.\r\n\r\nType 1 SPD is characterized by a 10\/350 \u00b5s current wave.\r\n\r\n<strong>\u03a4\u03cd\u03c0\u03bf\u03c2 2 SPD<\/strong>\r\n\r\nThe Type 2 SPD is the main protection system for all low voltage electrical installations. Installed in each electrical switchboard, it prevents the spread of overvoltage in the electrical installations and protects the loads.\r\n\r\nType 2 SPD is characterized by an 8\/20 \u00b5s current wave.\r\n\r\n<strong>\u03a4\u03cd\u03c0\u03bf\u03c2 3 SPD<\/strong>\r\n\r\nThese SPDs have a low discharge capacity. They must therefore mandatorily be installed as a supplement to Type 2 SPD and in the vicinity of sensitive loads.\r\n\r\nType 3 SPD is characterized by a combination of voltage waves (1.2\/50 \u03bcs) and current waves (8\/20 \u03bcs).\r\n\r\n<strong>\u039a\u03b1\u03bd\u03bf\u03bd\u03b9\u03c3\u03c4\u03b9\u03ba\u03cc\u03c2 \u03bf\u03c1\u03b9\u03c3\u03bc\u03cc\u03c2 \u0395\u0395\u03a0<\/strong>\r\n\r\n\u0395\u03b9\u03ba. J18 \u2013 \u03a0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf\u03c2 \u03bf\u03c1\u03b9\u03c3\u03bc\u03cc\u03c2 SPD\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><\/td>\r\n<td><strong>\u0386\u03bc\u03b5\u03c3\u03bf \u03ba\u03b5\u03c1\u03b1\u03c5\u03bd\u03cc<\/strong><\/td>\r\n<td colspan=\"2\"><strong>\u0388\u03bc\u03bc\u03b5\u03c3\u03bf \u03ba\u03b5\u03c1\u03b1\u03c5\u03bd\u03cc<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>IEC 61643-1<\/strong><\/td>\r\n<td>\u03a4\u03b5\u03c3\u03c4 \u0399 \u03c4\u03ac\u03be\u03b7\u03c2<\/td>\r\n<td>\u0394\u03bf\u03ba\u03b9\u03bc\u03ae \u03c4\u03ac\u03be\u03b7\u03c2 II<\/td>\r\n<td>\u0394\u03bf\u03ba\u03b9\u03bc\u03ae \u03ba\u03b1\u03c4\u03b7\u03b3\u03bf\u03c1\u03af\u03b1\u03c2 \u0399\u0399\u0399<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>IEC 61643-11\/2011<\/strong><\/td>\r\n<td>\u03a4\u03cd\u03c0\u03bf\u03c2 1\u00a0:<\/td>\r\n<td>\u03a4\u03cd\u03c0\u03bf\u03c2 2\u00a0:<\/td>\r\n<td>\u03a4\u03cd\u03c0\u03bf\u03c2 3\u00a0:<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>EN\/IEC 61643-11<\/strong><\/td>\r\n<td>\u03a4\u03cd\u03c0\u03bf\u03c2 1<\/td>\r\n<td>\u03a4\u03cd\u03c0\u03bf\u03c2 2<\/td>\r\n<td>\u03a4\u03cd\u03c0\u03bf\u03c2 3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u03a0\u03c1\u03ce\u03b7\u03bd VDE 0675v<\/strong><\/td>\r\n<td>B<\/td>\r\n<td>C<\/td>\r\n<td>D<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u03a4\u03cd\u03c0\u03bf\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03b1\u03c3\u03c4\u03b9\u03ba\u03bf\u03cd \u03ba\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2<\/strong><\/td>\r\n<td>10\/350<\/td>\r\n<td>8\/20<\/td>\r\n<td>1.2\/50 + 8\/20<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<ul>\r\n \t<li><strong>\u03a3\u03b7\u03bc\u03b5\u03af\u03c9\u03c3\u03b7 1<\/strong>: \u03a5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9\u00a0 +\u00a0 \u00a0SPD (\u03ae Type 1 + 2 SPD) \u03c0\u03bf\u03c5 \u03c3\u03c5\u03bd\u03b4\u03c5\u03ac\u03b6\u03b5\u03b9 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1 \u03c6\u03bf\u03c1\u03c4\u03af\u03c9\u03bd \u03b1\u03c0\u03cc \u03ac\u03bc\u03b5\u03c3\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03ad\u03bc\u03bc\u03b5\u03c3\u03b5\u03c2 \u03ba\u03b5\u03c1\u03b1\u03c5\u03bd\u03bf\u03cd\u03c2.<\/li>\r\n \t<li><strong>\u03a3\u03b7\u03bc\u03b5\u03af\u03c9\u03c3\u03b7 2<\/strong>: \u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03b1\u00a0 SPD \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bd \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03bd\u03b1 \u03b4\u03b7\u03bb\u03c9\u03b8\u03bf\u03cd\u03bd \u03c9\u03c2\u00a0 .<\/li>\r\n<\/ul>\r\nAccording to this;\r\n\r\nFirst Stage: Type 1 \/ Class 1 \/ Class B lightning protection surge arrester are the front protection units of the facility \/ structure. They are circuit elements capable of absorbing and damping direct lightning strikes that may come from power lines.\r\n\r\nIt must be installed in the main distribution \/ transformer panel inside and \/ or outside the building.\r\n\r\nIt should have been tested in 10\/350 \u00b5Sec waveform. It must be able to discharge a load of at least 50kA between Phase-Neutral, and at least 100kA between Phases, Neutral-Earth.\r\n\r\n<img class=\"wp-image-17335 size-medium alignnone\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-800x800.jpg 800w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-768x768.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1.jpg 1282w\" alt=\"\" width=\"300\" height=\"300\" \/><img class=\"wp-image-17330 size-medium alignnone\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-800x800.jpg 800w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-768x768.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P.jpg 1322w\" alt=\"\" width=\"300\" height=\"300\" \/>\r\n\r\nSecond Stage: Type 2 \/ Class 2 \/ C Class Surge Protection Devices (Surge Arresters) are circuit elements used in the secondary and \/ or lower secondary panels of the facility \/ building. Compared to Type 1 \/ Class II surge arresters, their strength is lower but their sensitivity is better.\r\n\r\nIt should have been tested in an 8\/20 \u00b5Sec waveform. It must be able to discharge a load of at least 10kA between Phase-Neutral, and at least 25kA between Phases, Neutral-Earth.\r\n\r\n<img class=\"alignnone wp-image-17395 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-600x599.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P.jpg 1059w\" alt=\"\" width=\"300\" height=\"300\" \/><img class=\"alignnone wp-image-17487 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-600x599.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31.jpg 1044w\" alt=\"\" width=\"300\" height=\"300\" \/>\r\n\r\nType 1 + 2 \/ Class 1 + 2 \/ B + C Class compact protection elements have been used as second level protection in recent years.\r\n\r\nIt should have been tested in 10\/350 \u00b5Sec waveform. It must be able to discharge a load of at least 40kA between Phase-Neutral, and at least 100kA between Phases, Neutral-Earth.\r\n\r\nIt is used in the electrical panel of the uninterruptible power supply and \/ or in the secondary panels positioned like a main panel.\r\n\r\n<img class=\"alignnone wp-image-17388 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-600x599.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P.jpg 1079w\" alt=\"\" width=\"300\" height=\"300\" \/>\r\n\r\nThird Stage: Type 3 \/ Class 3 \/ D Class sudden overvoltage protection surge arresters are circuit elements used in its lines to protect sensitive electronic devices.\r\n\r\nThe product range is quite wide as it can be connected to different devices with different connection protocols \/ sockets \/ ports.\r\n\r\nBelow are some of the Type 3 \/ Class 3 \/ D Class surge arresters for different circuits \/ devices.\r\n\r\n<img class=\"alignnone wp-image-17550 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P.jpg 1214w\" alt=\"\" width=\"300\" height=\"300\" \/><img class=\"alignnone wp-image-17554 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-800x800.jpg 800w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-768x768.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P.jpg 1211w\" alt=\"\" width=\"300\" height=\"300\" \/>","protected":false},"featured_media":863,"parent":0,"menu_order":146,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-862","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"The Surge Protection Device (SPD) is a component of the electrical installation protection system.","txt":"The Surge Protection Device (SPD) is a component of the electrical installation protection system.\r\n\r\nThis device is connected in parallel on the power supply circuit of the loads that it has to protect (see Fig. J17). It can also be used at all levels of the power supply network.\r\n\r\nThis is the most commonly used and most efficient type of overvoltage protection.\r\n\r\n<img class=\"size-full wp-image-17898 aligncenter\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18.png\" sizes=\"(max-width: 440px) 100vw, 440px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18.png 440w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18-400x269.png 400w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/18-150x101.png 150w\" alt=\"\" width=\"440\" height=\"296\" \/>\r\n\r\nScientists have carried out important studies on the characteristics and effects of lightning strikes for years, and have developed technological products accordingly. Today, tests of these products can also be carried out by simulating a lightning strike in this context.\r\n\r\n<strong>Lightning Strike Wave Types:<\/strong>\r\n\r\nThe lightning strike can be studied in two different wavelengths.\r\n<ol>\r\n \t<li><strong>Direct Lightning Strike 10 \/ 350\u03bcs:<\/strong><\/li>\r\n<\/ol>\r\nImpulse currents in a waveform of 10\/350 \u03bcs occur in direct lightning strikes. This pulse rapid voltage increase releases great power with a large current pulse.\r\n\r\nToday, External Lightning Protection System materials and Type 1 \/ Class I type Surge Arrester circuit elements are tested according to these criteria according to the standards.\r\n<ol start=\"2\">\r\n \t<li><strong>Lightning Strike and Switching Voltages on a Remote Area 8 \/ 20\u03bcs:<\/strong><\/li>\r\n<\/ol>\r\nLightning strikes at a distant location and impulse currents with switching voltages 8\/20 \u03bcs waveform occur.\r\n\r\nThe energy content of this pulse is significantly lower than the lightning test current\u2019s pulse current wave of 10\/350 \u03bcs. Type 2 \/ Class II and Type 3 \/ Class III type Surge Protector (Surge Arrester) circuit elements are tested according to these criteria according to the standards.\r\n\r\n<strong>Standards<\/strong>\r\n\r\nSome frequently listed standards include:\r\n<ul>\r\n \t<li>IEC 61643-11 Low-voltage surge protective devices \u2013 Part 11: Surge protective devices connected to low-voltage power systems \u2013 Requirements and test methods (replaces IEC 61643-1)<\/li>\r\n \t<li>IEC 61643-21 Low voltage surge protective devices \u2013 Part 21: Surge protective devices connected to telecommunications and signalling networks \u2013 Performance requirements and testing methods<\/li>\r\n \t<li>IEC 61643-22 Low-voltage surge protective devices \u2013 Part 22: Surge protective devices connected to telecommunications and signalling networks \u2013 Selection and application principles<\/li>\r\n \t<li>EN 61643-11, 61643-21 and 61643-22<\/li>\r\n \t<li>Telcordia Technologies Technical Reference TR-NWT-001011<\/li>\r\n \t<li>ANSI\/IEEE C62.xx<\/li>\r\n \t<li>Underwriters Laboratories (UL) 1449.<\/li>\r\n \t<li>AS\/NZS 1768<\/li>\r\n<\/ul>\r\nEach standard defines different protector characteristics, test vectors, or operational purpose.\r\n\r\nEN 62305 and ANSI\/IEEE C62.xx define what spikes a protector might be expected to divert. EN 61643-11 and 61643-21 specify both the product\u2019s performance and safety requirements. In contrast, the IEC only writes standards and does not certify any particular product as meeting those standards. IEC Standards are used by members of the CB Scheme of international agreements to test and certify products for safety compliance.\r\n\r\nIn addition, the following standards are not standards for standalone surge protectors, but are instead meant for testing surge immunity in electrical and electronic equipment as a whole. Thus, they\u2019re frequently used in the design and test of surge protection circuitry.\r\n<ul>\r\n \t<li>IEC 61000-4-2 Electrostatic discharge immunity test<\/li>\r\n \t<li>IEC 61000-4-4 Electrical fast transient\/burst immunity test<\/li>\r\n \t<li>IEC 61000-4-5 Surge immunity test<\/li>\r\n<\/ul>\r\n<strong>Principle<\/strong>\r\n\r\nSPD is designed to limit transient overvoltage of atmospheric origin and divert current waves to earth, so as to limit the amplitude of this overvoltage to a value that is not hazardous for the electrical installation and electric switchgear and control gear.\r\n\r\n<strong>SPD eliminates overvoltage<\/strong>\r\n<ul>\r\n \t<li>In common mode, between phase and neutral or earth;<\/li>\r\n \t<li>In differential mode, between phase and neutral.<\/li>\r\n<\/ul>\r\nIn the event of an overvoltage exceeding the operating threshold, the SPD\r\n<ul>\r\n \t<li>Conducts the energy to earth, in common mode;<\/li>\r\n \t<li>Distributes the energy to the other live conductors, in differential mode.<\/li>\r\n<\/ul>\r\n<strong>The three types of SPD<\/strong>\r\n\r\n<strong>Type 1 SPD<\/strong>\r\n\r\nThe Type 1 SPD is recommended in the specific case of service-sector and industrial buildings, protected by a lightning protection system or a meshed cage.\r\n\r\nIt protects electrical installations against direct lightning strokes. It can discharge the back-current from lightning spreading from the earth conductor to the network conductors.\r\n\r\nType 1 SPD is characterized by a 10\/350 \u00b5s current wave.\r\n\r\n<strong>Type 2 SPD<\/strong>\r\n\r\nThe Type 2 SPD is the main protection system for all low voltage electrical installations. Installed in each electrical switchboard, it prevents the spread of overvoltage in the electrical installations and protects the loads.\r\n\r\nType 2 SPD is characterized by an 8\/20 \u00b5s current wave.\r\n\r\n<strong>Type 3 SPD<\/strong>\r\n\r\nThese SPDs have a low discharge capacity. They must therefore mandatorily be installed as a supplement to Type 2 SPD and in the vicinity of sensitive loads.\r\n\r\nType 3 SPD is characterized by a combination of voltage waves (1.2\/50 \u03bcs) and current waves (8\/20 \u03bcs).\r\n\r\n<strong>SPD normative definition<\/strong>\r\n\r\nFig. J18 \u2013 SPD standard definition\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><\/td>\r\n<td><strong>Direct lightning stroke<\/strong><\/td>\r\n<td colspan=\"2\"><strong>Indirect lightning stroke<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>IEC 61643-1<\/strong><\/td>\r\n<td>Class I test<\/td>\r\n<td>Class II test<\/td>\r\n<td>Class III test<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>IEC 61643-11\/2011<\/strong><\/td>\r\n<td>Type 1\u00a0:<\/td>\r\n<td>Type 2\u00a0:<\/td>\r\n<td>Type 3\u00a0:<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>EN\/IEC 61643-11<\/strong><\/td>\r\n<td>Type 1<\/td>\r\n<td>Type 2<\/td>\r\n<td>Type 3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Former VDE 0675v<\/strong><\/td>\r\n<td>B<\/td>\r\n<td>C<\/td>\r\n<td>D<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Type of test wave<\/strong><\/td>\r\n<td>10\/350<\/td>\r\n<td>8\/20<\/td>\r\n<td>1.2\/50 + 8\/20<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<ul>\r\n \t<li><strong>Note 1<\/strong>: There exist\u00a0 +\u00a0 \u00a0SPD (or Type 1 + 2 SPD) combining protection of loads against direct and indirect lightning strokes.<\/li>\r\n \t<li><strong>Note 2<\/strong>: some\u00a0 SPD can also be declared as\u00a0 .<\/li>\r\n<\/ul>\r\nAccording to this;\r\n\r\nFirst Stage: Type 1 \/ Class 1 \/ Class B lightning protection surge arrester are the front protection units of the facility \/ structure. They are circuit elements capable of absorbing and damping direct lightning strikes that may come from power lines.\r\n\r\nIt must be installed in the main distribution \/ transformer panel inside and \/ or outside the building.\r\n\r\nIt should have been tested in 10\/350 \u00b5Sec waveform. It must be able to discharge a load of at least 50kA between Phase-Neutral, and at least 100kA between Phases, Neutral-Earth.\r\n\r\n<img class=\"wp-image-17335 size-medium alignnone\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-800x800.jpg 800w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-768x768.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25M-4P-1.jpg 1282w\" alt=\"\" width=\"300\" height=\"300\" \/><img class=\"wp-image-17330 size-medium alignnone\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-800x800.jpg 800w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-768x768.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/11\/BR-25GR-4P.jpg 1322w\" alt=\"\" width=\"300\" height=\"300\" \/>\r\n\r\nSecond Stage: Type 2 \/ Class 2 \/ C Class Surge Protection Devices (Surge Arresters) are circuit elements used in the secondary and \/ or lower secondary panels of the facility \/ building. Compared to Type 1 \/ Class II surge arresters, their strength is lower but their sensitivity is better.\r\n\r\nIt should have been tested in an 8\/20 \u00b5Sec waveform. It must be able to discharge a load of at least 10kA between Phase-Neutral, and at least 25kA between Phases, Neutral-Earth.\r\n\r\n<img class=\"alignnone wp-image-17395 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P-600x599.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-4P.jpg 1059w\" alt=\"\" width=\"300\" height=\"300\" \/><img class=\"alignnone wp-image-17487 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31-600x599.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/09\/BR-40-31.jpg 1044w\" alt=\"\" width=\"300\" height=\"300\" \/>\r\n\r\nType 1 + 2 \/ Class 1 + 2 \/ B + C Class compact protection elements have been used as second level protection in recent years.\r\n\r\nIt should have been tested in 10\/350 \u00b5Sec waveform. It must be able to discharge a load of at least 40kA between Phase-Neutral, and at least 100kA between Phases, Neutral-Earth.\r\n\r\nIt is used in the electrical panel of the uninterruptible power supply and \/ or in the secondary panels positioned like a main panel.\r\n\r\n<img class=\"alignnone wp-image-17388 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P-600x599.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/10\/BR-12.5M-4P.jpg 1079w\" alt=\"\" width=\"300\" height=\"300\" \/>\r\n\r\nThird Stage: Type 3 \/ Class 3 \/ D Class sudden overvoltage protection surge arresters are circuit elements used in its lines to protect sensitive electronic devices.\r\n\r\nThe product range is quite wide as it can be connected to different devices with different connection protocols \/ sockets \/ ports.\r\n\r\nBelow are some of the Type 3 \/ Class 3 \/ D Class surge arresters for different circuits \/ devices.\r\n\r\n<img class=\"alignnone wp-image-17550 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-801x800.jpg 801w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-768x767.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-4P.jpg 1214w\" alt=\"\" width=\"300\" height=\"300\" \/><img class=\"alignnone wp-image-17554 size-medium\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-300x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-300x300.jpg 300w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-800x800.jpg 800w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-150x150.jpg 150w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-768x768.jpg 768w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P-600x600.jpg 600w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/08\/BR-40DP-2P.jpg 1211w\" alt=\"\" width=\"300\" height=\"300\" \/>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog\/862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/media\/863"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/media?parent=862"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog_category?post=862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}