【正文】 s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 Determination of lowvoltage, limitedenergy circuit status . . . . . . . . . . . . . . . . . . . . . . . . .51 Knockout secureness test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 Thermal aging test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 9 Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52A General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52A Identi174。 COPYRIGHT 169。無(wú)論是印刷還是電子版的標(biāo)準(zhǔn)應(yīng)以任何方式改變。s Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of UL39。s OnLine Collaborative Standards Development System (CSDS) at 評(píng)論或建議修訂標(biāo)準(zhǔn)的任何部分可能隨時(shí)提交 UL。 ANSI審批標(biāo)準(zhǔn)不包括封面 ,傳輸頁(yè)面 ,頁(yè)面標(biāo)題 ,或生效日期信息。 The following table lists the future effective dates with the corresponding reference. 下表列出了未來(lái)有效日期與相應(yīng)的參考。粗糖 ,和 /或其他元素的標(biāo)準(zhǔn)在未來(lái)有效日期的表示注意以下項(xiàng)目的影響。 tr2 MAY 22, 2020 ? UL 8750 The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, 174。s fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchaser39。 Users of the electronic versions of UL39。ts的喪失 ,失去了儲(chǔ)蓄 ,損失的數(shù)據(jù) ,或任何其他損害引起的使用或無(wú)法使用這個(gè)標(biāo)準(zhǔn) ,即使 UL或授權(quán) UL代表建議這種損害的可能性。ts, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall UL39。tness for any purpose. UL提供這個(gè)標(biāo)準(zhǔn) 沒(méi)有任何形式的擔(dān)保 ,不論是明示或暗示 ,包括但不限于適銷性的隱含保證或 174。 The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated June 7, 2020 and October 11, 2020. 新的和修改需求大幅按照提案 (s)在這個(gè)問(wèn)題上 6月 7日 ,2020年和 2020年 10月 11日 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. 保留所有權(quán)利。s electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement bees effective. 文本已經(jīng)以任何方式改變或影響 UL電子出版系統(tǒng)的邊緣有一條垂直線。刪除段落 ? Revise Risk of Fire De174。 UL 8750 Light Emitting Diode (LED) Equipment for Use in Lighting Products MAY 22, 2020 ? UL 8750 tr1 UL Standard for Safety for Light Emitting Diode (LED) Equipment for Use in Lighting Products, UL 8750 UL標(biāo)準(zhǔn)安全發(fā)光二極管 (LED)設(shè)備用于照明產(chǎn)品、 UL 8750 First Edition, Dated November 18, 2020 第一個(gè)版本 ,日期為 2020年 11月 18日 Summary of Topics 總結(jié)的主題 This revision to ANSI/UL 8750 includes the following changes in requirements: 這個(gè)修訂 ANSI / UL 8750變化包括以下要求 : ? Clarify requirements for conformal coatings, paragraph 、段落 ? Insulation materials in transformers and coils 177。 Delete paragraph and add Section 絕緣材料在變形金剛和線圈 177。nition to include 15 W power limit and revisions to Class 2 and LVLE references throughout the standard 修改火的風(fēng)險(xiǎn)包括 15 W功率極限和修正二班和 LVLE引用標(biāo)準(zhǔn) ? Add requirements for supply and load connections 添加需求供應(yīng)和負(fù)載連接 ? Revisions to consolidate electrical spacings in Sections and and add optional shorting test for closelyspaced PWB traces 修訂整合電氣間距在章節(jié) PWB痕跡 ? Add requirement for LED array (module) thermal measurement point 添加要求 LED陣列 (模塊 )熱計(jì)量點(diǎn) ? Add temperature measurement method for polymeric materials when TC is optically radiated 添加溫度測(cè)量方法 ,當(dāng) TC光學(xué)輻射高分子材料 Text that has been changed in any manner or impacted by UL39。需求的變化標(biāo)志著一條垂直線的保證金 ,緊隨其后的是一個(gè)有效的日期注意指示出版日期或生效的日期改變了要求。不得復(fù)制 ,出版的一部分存儲(chǔ)在檢索系統(tǒng)中 ,或以任何形式通過(guò)任何方式傳播 ,電子、機(jī)械復(fù)印、錄制、 UL或未經(jīng)許可 UL provides this Standard ?as is? without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or 174。tness為任何目的 In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of pro174。s liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. 在任何事件 UL將承擔(dān)任何特殊的、附帶的、間接的、間接的或類似的賠償 ,包括職業(yè) 174。在任何事件 UL的任何損害責(zé)任超過(guò)這個(gè)標(biāo)準(zhǔn)的價(jià)格 ,無(wú)論索賠的形式。s Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorney39。s puter system. 用戶的電子版本的 UL標(biāo)準(zhǔn)安全同意保護(hù) ,賠償 ,并持有 UL無(wú)害從和反對(duì)任何損失 ,費(fèi)用 ,責(zé)任 ,損失 ,索賠 ,或判斷 (包括合理的律師費(fèi) )所產(chǎn)生的任何錯(cuò)誤或偏差引入 ,而購(gòu)買者是存儲(chǔ)電子標(biāo)準(zhǔn)對(duì)買方的計(jì)算機(jī)系統(tǒng)。gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a ?SUPERSEDED REQUIREMENTS? notice. 這個(gè)標(biāo)準(zhǔn)的需求現(xiàn)在實(shí)際上 ,除了那些段落 、章節(jié)、表、 174。前文本的要求已經(jīng)修改 ,未來(lái)的生效日期后位于標(biāo)準(zhǔn) ,并由 取代需求之前通知。 Future Effective Date未來(lái)的生效日期 Reference參考 October 17, 2020 2020/10/17 Paragraphs and NOVEMBER 18, 2020 (Title Page Reprinted: May 22, 2020) 1 UL 8750 Standard for Light Emitting Diode (LED) Equipment for Use in Lighting Products First Edition November 18, 2020 This ANSI/UL Standard for Safety consists of the First Edition including revisions through May