{"id":8345,"date":"2023-09-19T15:13:53","date_gmt":"2023-09-19T07:13:53","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=8345"},"modified":"2023-09-19T15:13:53","modified_gmt":"2023-09-19T07:13:53","slug":"alt1249","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/alt1249\/","title":{"rendered":"Photovoltaic welding strip resistivity test Tinned copper strip resistance test"},"content":{"rendered":"

Photovoltaic welding ribbon<\/a>How does the resistance of the wholePhotovoltaic cells<\/a>The performance of photovoltaic ribbons is greatly affected, so when selecting photovoltaic ribbons, the resistivity requirements of photovoltaic ribbons are very high. How to do the photovoltaic ribbon resistivity test? How to testTinned copper strip<\/a>What about resistors?<\/p>\n

Electrical properties<\/p>\n

The measurement is carried out at a temperature of 20\u00b0C\u00b15\u00b0C. The middle part of the tin-coated solder strip is taken as the gauge length (short line, marked with a thin marker pen). The contact points of the resistance tester are clamped at both ends of the gauge length thin line. The volume resistance of the tin-coated solder strip is measured in accordance with the provisions of GB\/T 3048.2. The same tin-coated solder strip is measured five times and the arithmetic mean is calculated.<\/p>\n

calculate<\/p>\n

The volume resistivity of the copper substrate at 20\u00b0C is calculated according to the following formula:<\/p>\n

\"\"

Where:<\/p>\n

RCu\u2014\u2014Volume resistance of copper substrate, in ohms (\u03a9);<\/p>\n

\u03c1Cu\u2014\u2014Resistivity of copper substrate at 20\u00b0C (values are shown in the table below), in ohms square millimeter per meter (\u03a9\u2022mm2\/m);<\/p>\n

SCu\u2014\u2014cross-sectional area of copper substrate (thickness \u00d7 width of copper substrate, calculated according to nominal size), in square millimeters (mm2);<\/p>\n

L1 - gauge length of tin-coated solder strip, in meters (m).<\/p>\n

Copper substrate resistivity<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Brand<\/td>\nCode<\/td>\nstate<\/td>\nResistivity\/(\u03a9\u00b7mm2\/m) not more than<\/td>\nElectrical conductivity\/%IACS not less than<\/td>\n<\/tr>\n
TU00<\/td>\nC10100<\/td>\n060<\/td>\n0.017070<\/td>\n101<\/td>\n<\/tr>\n
H01<\/td>\n0.017241<\/td>\n100<\/td>\n<\/tr>\n
H02<\/td>\n0.017415<\/td>\n99<\/td>\n<\/tr>\n
H04<\/td>\n0.017593<\/td>\n98<\/td>\n<\/tr>\n
TU0<\/p>\n

TU1<\/td>\n

T10130<\/p>\n

T10150<\/td>\n

060<\/td>\n0.017241<\/td>\n100<\/td>\n<\/tr>\n
H01<\/td>\n0.017415<\/td>\n99<\/td>\n<\/tr>\n
H02<\/td>\n0.017593<\/td>\n98<\/td>\n<\/tr>\n
H04<\/td>\n0.017774<\/td>\n97<\/td>\n<\/tr>\n
According to GB\/T 14594, O60 represents soft annealing; H01 represents 1\/4 hard; H02 represents 1\/2 hard; H04 represents hard.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"\"

Where:<\/p>\n

R20\u2014\u2014The volume resistance between the two ends of the sample at 20\u00b0C, in ohms (\u03a9);<\/p>\n

t\u2014\u2014Test temperature when testing the volume resistance of tin-coated solder strip, in degrees Celsius (\u00b0C);<\/p>\n

R(t)\u2014\u2014The volume resistance between the two ends of the sample at the test temperature t\u00b0C, in ohms (\u03a9);<\/p>\n

\u03b120\u2014\u2014Resistance temperature coefficient of sample at 20\u00b0C, 3.93\u00d710-3\/\u00b0C.<\/p>","protected":false},"excerpt":{"rendered":"

The resistance of the photovoltaic ribbon has a great influence on the performance of the entire photovoltaic cell, so when selecting the photovoltaic ribbon, the resistivity requirement of the photovoltaic ribbon is very important.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[19],"tags":[227],"class_list":["post-8345","post","type-post","status-publish","format-standard","hentry","category-blog","tag-guangfuhandai"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/8345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/comments?post=8345"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/8345\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=8345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=8345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=8345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}