{"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\/th\/blog\/what-is-the-difference-between-10-350%ce%bcs-and-8-20%ce%bcs-waveform\/","title":{"rendered":"\u0e2d\u0e30\u0e44\u0e23\u0e04\u0e37\u0e2d\u0e04\u0e27\u0e32\u0e21\u0e41\u0e15\u0e01\u0e15\u0e48\u0e32\u0e07\u0e23\u0e30\u0e2b\u0e27\u0e48\u0e32\u0e07\u0e23\u0e39\u0e1b\u0e04\u0e25\u0e37\u0e48\u0e19 10\/350\u03bcs \u0e41\u0e25\u0e30 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) \u0e41\u0e25\u0e30\u0e04\u0e27\u0e32\u0e21\u0e41\u0e15\u0e01\u0e15\u0e48\u0e32\u0e07\u0e02\u0e2d\u0e07\u0e40\u0e27\u0e25\u0e32\u0e23\u0e30\u0e2b\u0e27\u0e48\u0e32\u0e07\u0e04\u0e25\u0e37\u0e48\u0e19\u0e17\u0e31\u0e49\u0e07\u0e2a\u0e2d\u0e07\u0e19\u0e31\u0e49\u0e19\u0e43\u0e2b\u0e0d\u0e48\u0e21\u0e32\u0e01 \u0e14\u0e31\u0e07\u0e19\u0e31\u0e49\u0e19 SPD \u0e1b\u0e23\u0e30\u0e40\u0e20\u0e17 1 25kA \u0e08\u0e36\u0e07\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e04\u0e32\u0e22\u0e1e\u0e25\u0e31\u0e07\u0e07\u0e32\u0e19\u0e44\u0e14\u0e49\u0e21\u0e32\u0e01\u0e01\u0e27\u0e48\u0e32 SPD \u0e1b\u0e23\u0e30\u0e40\u0e20\u0e17 2 40kA \u0e21\u0e32\u0e01.","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\/th\/wp-json\/wp\/v2\/blog\/788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/th\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/th\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/th\/wp-json\/wp\/v2\/media\/789"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/th\/wp-json\/wp\/v2\/media?parent=788"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/th\/wp-json\/wp\/v2\/blog_category?post=788"}],"curies":[{"name":"\u0e2b\u0e19\u0e49\u0e32","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}