{"id":7392,"date":"2026-01-07T10:53:39","date_gmt":"2026-01-07T02:53:39","guid":{"rendered":"https:\/\/www.chinaautoregs.com\/?p=7392"},"modified":"2026-01-07T10:53:39","modified_gmt":"2026-01-07T02:53:39","slug":"gb-t-45321-2025%e8%8b%b1%e6%96%87%e7%89%88%e7%bf%bb%e8%af%91-%e6%9c%ba%e5%8a%a8%e8%bd%a6%e7%94%a8%e7%81%af%e4%b8%9d%e5%85%89%e6%ba%90%e5%85%89%e7%94%b5%e5%8f%82%e6%95%b0%e6%b5%8b%e9%87%8f%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.chinaautoregs.com\/?p=7392","title":{"rendered":"GB\/T 45321-2025\u82f1\u6587\u7248\u7ffb\u8bd1 \u673a\u52a8\u8f66\u7528\u706f\u4e1d\u5149\u6e90\u5149\u7535\u53c2\u6570\u6d4b\u91cf\u65b9\u6cd5"},"content":{"rendered":"
<\/div>\n
ChinaAutoRegs|GB\/T 45321-2025\u82f1\u6587\u7248\u7ffb\u8bd1 \u673a\u52a8\u8f66\u7528\u706f\u4e1d\u5149\u6e90\u5149\u7535\u53c2\u6570\u6d4b\u91cf\u65b9\u6cd5<\/div>\n
Measuring Method for Electric and Photometric Parameters of Filament Light Sources for Power-Driven Vehicles<\/div>\n
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<\/div>\n
CONTENTS<\/div>\n
<\/div>\n
Foreword<\/div>\n
1 Scope<\/div>\n
2 Normative References<\/div>\n
3 Terms and Definitions<\/div>\n
4 Principle<\/div>\n
4.1 Electric Parameters<\/div>\n
4.2 Total Flux<\/div>\n
4.3 Chromaticity Coordinates<\/div>\n
5 Instruments and Equipment<\/div>\n
5.1 Electric Parameters<\/div>\n
5.2 Total Flux<\/div>\n
5.3 Chromaticity Coordinates<\/div>\n
5.4 Traceability of Instruments and Equipment<\/div>\n
6 Measurement Conditions<\/div>\n
6.1 Operating Environment<\/div>\n
6.2 Ageing<\/div>\n
6.3 Burning Position and Orientation<\/div>\n
6.4 Stabilization<\/div>\n
6.5 Voltage and Current<\/div>\n
7 Measurement Procedure and Data Processing<\/div>\n
7.1 Warmup of Measuring Equipment<\/div>\n
7.2 Measurement of Electric Parameters<\/div>\n
7.3 Measurement of Total Flux<\/div>\n
7.4 Measurement of Chromaticity Coordinates<\/div>\n
8 Test Report<\/div>\n
Annex A (Informative) Burning Orientation of Light Source in Integrating Sphere<\/div>\n
Annex B (Informative) Typical Examples Showing Connection Points for Light Source Energizing and Lamp End Voltage Monitoring<\/div>\n
Annex C (Normative) Measurement Procedure of Light Source Absorption Correction Factor<\/div>\n
<\/div>\n
1 SCOPE<\/div>\n
This document specifies the measurement principle of electric parameters, total flux, chromaticity coordinates, instruments and equipment, measurement conditions, measurement procedure and data processing, as well as test report, with respect to the filament light sources for power-driven vehicles.<\/div>\n
This document is applicable to the filament light sources (hereinafter referred to as \u201clight sources\u201d) intended for road lighting and light-signaling devices and systems of power-driven vehicles, while this document may be used as a reference for the filament light sources for other road vehicles.<\/div>\n
2 NORMATIVE REFERENCES<\/div>\n
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.<\/div>\n
GB\/T 2900.65 Electrotechnical terminology\u2014Lighting<\/div>\n
GB\/T 26178 The measurement of luminous flux<\/div>\n
GB\/T 43081-2023 Lamps and light sources for road vehicles\u2014Dimensional, electrical and luminous requirements<\/div>\n
JJG 247-2008 Verification regulation of standard incandescent lamp for total flux<\/div>\n
3 TERMS AND DEFINITIONS<\/div>\n
For the purpose of this document, the terms and definitions given in GB\/T 2900.65 and GB\/T 26178 as well as the followings apply.<\/div>\n
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\n\u8bf7\u8054\u7cfb\u624b\u673a\/\u5fae\u4fe1: 13306496964\/Email: standardtrans@foxmail.com \u83b7\u53d6\u5b8c\u6574\u8bd1\u6587\u3002
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\nThe English Translation of this document is readily available, and delivered immediately upon payment.
\nSample pages may be requested to your preference before placing order.
\nPlease contact standardtrans@foxmail.com for the complete PDF version in English.
\nOur well-established database has included almost all Chinese automotive standards in effect, providing one-stop, up-to-date, efficient and professional solution.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

ChinaAutoRegs|GB\/T 45321-2025\u82f1\u6587\u7248\u7ffb\u8bd1 \u673a\u52a8\u8f66\u7528\u706f … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[815,1324,29,30,1397,17,1398,823,10,178,1477,1326,1325,1440,1317,1322,1318,1329,7,11,18,1321,723,1435,1389,19,14],"class_list":["post-7392","post","type-post","status-publish","format-standard","hentry","category-i","tag-cav","tag-ccc","tag-cnca","tag-cqc","tag-gb-2025","tag-gb-english","tag-gb-t2025","tag-gb-t","tag-gbt-45321-2025","tag-gbt-english","tag-gbt-translated","tag-gbt2025","tag-gbt","tag-gb","tag-qc-t","tag-qct","tag-723","tag-1435","tag-1389","tag-19","tag-14"],"views":323,"_links":{"self":[{"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=\/wp\/v2\/posts\/7392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7392"}],"version-history":[{"count":1,"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=\/wp\/v2\/posts\/7392\/revisions"}],"predecessor-version":[{"id":7393,"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=\/wp\/v2\/posts\/7392\/revisions\/7393"}],"wp:attachment":[{"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.chinaautoregs.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}