{"id":788,"date":"2023-12-19T16:17:16","date_gmt":"2023-12-19T08:17:16","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=788"},"modified":"2024-09-05T16:36:06","modified_gmt":"2024-09-05T08:36:06","slug":"what-is-the-difference-between-10-350%ce%bcs-and-8-20%ce%bcs-waveform","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/el\/blog\/what-is-the-difference-between-10-350%ce%bcs-and-8-20%ce%bcs-waveform\/","title":{"rendered":"\u03a0\u03bf\u03b9\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03ba\u03c5\u03bc\u03b1\u03c4\u03bf\u03bc\u03bf\u03c1\u03c6\u03ae\u03c2 10\/350\u03bcs \u03ba\u03b1\u03b9 8\/20\u03bcs;"},"content":{"rendered":"According to IEC61643-11, Type 1 surge protective device should be tested by 10\/350\u03bcs waveform and Type 2 SPD should be tested by 8\/20\u03bcs waveform.\r\n\r\n10\/350\u03bcs waveform is a surge which reaches peak value at 10\u03bcs and it reduces to half of peak current at 350\u03bcs. Take BR-25GR type 1 SPD as an example, the product was tested at waveform which reach 25kA in 10\u03bcs which reduces to12.5kA at 350\u03bcs.\r\n\r\nAs comparison, 8\/20\u03bcs waveform is a surge which reaches peak value at 8\u03bcs and reduces to half of peak current at 20\u03bcs. Take BR-40 type 2 SPD as an example, this product was tested at waveform which reach 40kA in 8\u03bcs which reduces to 20kA at 20\u03bcs.\r\n\r\nAs you can see from the above picture, 8\/20\u03bcs waveform has much shorter time than the 10\/350\u03bcs waveform. As energy equals to current square multiplied by resistor and time (E=I<sup>2<\/sup>Rt) \u03ba\u03b1\u03b9 \u03b7 \u03c7\u03c1\u03bf\u03bd\u03b9\u03ba\u03ae \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03c9\u03bd \u03b4\u03cd\u03bf \u03ba\u03c5\u03bc\u03ac\u03c4\u03c9\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03bf\u03bb\u03cd \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7, \u03b5\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2, \u03ad\u03bd\u03b1 SPD \u03c4\u03cd\u03c0\u03bf\u03c5 1 25 kA \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b5\u03ba\u03c6\u03bf\u03c1\u03c4\u03af\u03c3\u03b5\u03b9 \u03c0\u03bf\u03bb\u03cd \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03b7 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03b1\u03c0\u03cc \u03ad\u03bd\u03b1 SPD \u03c4\u03cd\u03c0\u03bf\u03c5 2 40 kA.","protected":false},"featured_media":789,"parent":0,"menu_order":179,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-788","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"According to IEC61643-11, Type 1 surge protective device should be tested by 10\/350\u03bcs waveform and Type 2 SPD should be tested by 8\/20\u03bcs waveform.","txt":"According to IEC61643-11, Type 1 surge protective device should be tested by 10\/350\u03bcs waveform and Type 2 SPD should be tested by 8\/20\u03bcs waveform.\r\n\r\n10\/350\u03bcs waveform is a surge which reaches peak value at 10\u03bcs and it reduces to half of peak current at 350\u03bcs. Take BR-25GR type 1 SPD as an example, the product was tested at waveform which reach 25kA in 10\u03bcs which reduces to12.5kA at 350\u03bcs.\r\n\r\nAs comparison, 8\/20\u03bcs waveform is a surge which reaches peak value at 8\u03bcs and reduces to half of peak current at 20\u03bcs. Take BR-40 type 2 SPD as an example, this product was tested at waveform which reach 40kA in 8\u03bcs which reduces to 20kA at 20\u03bcs.\r\n\r\nAs you can see from the above picture, 8\/20\u03bcs waveform has much shorter time than the 10\/350\u03bcs waveform. As energy equals to current square multiplied by resistor and time (E=I<sup>2<\/sup>Rt) and the time difference between the two wave is very big, therefore, a type 1 25kA SPD can discharge much more energy than a type 2 40kA SPD."},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog\/788","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\/789"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/media?parent=788"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog_category?post=788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}