1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 8750 Light Emitting Diode (LED) Equipment for Use in Lighting Products STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION F
2、ROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Light Emitting Diode (LED) Equipment for Use in Lighting Products, UL 8750 Second Edition, Dated September 15, 2015 Summary of Topics This revision to ANSI/UL 8
3、750 includes the following changes in requirements: Relocate denition of enclosure to Glossary section Clarify terminology for isolated circuit in Glossary Add construction and performance requirements for direct plug-in units Clarify requirements for accessibility of live parts in Section 7.2 Revis
4、e requirements for electrical spacings in Section 7.8 Clarify construction and performance requirements for transformers in paragraph 7.9.2 Clarify equipment under test terminology in paragraphs 8.5.1 and 8.5.4 Clarify test potentials in Table 8.3 and add acceptable results criteria Revise Circuit P
5、ower Limit Measurement Test in Section 8.8 Add Supplement SG Designation of Temperature Value at the Temperature Measurement Point T C Add Supplement SH Requirements for LED Drivers with Phase-Cut Dimming The new and revised requirements are substantially in accordance with Proposal(s) on this subje
6、ct dated March 24, 2017 and June 30, 2017. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any fo
7、rm by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. 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 tness for any purpose. I
8、n no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, 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 advi
9、sed of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any
10、loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic AUGUST 17, 2017 UL 8750 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERM
11、ISSION FROM UL Standard on the purchasers computer system. AUGUST 17, 2017 UL 8750 tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 15, 2015 (Title Page Reprinted: August 17, 2017) 1 UL 8750 Standard for Light Emitting Diode (LED
12、) Equipment for Use in Lighting Products First Edition November, 2009 Second Edition September 15, 2015 This ANSI/UL Standard for Safety consists of the Second Edition including revisions through August 17, 2017. The most recent designation of ANSI/UL 8750 as an American National Standard (ANSI) occ
13、urred on August 17, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collabora
14、tive Standards Development System (CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and e
15、xclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 8750-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 17, 2017 UL 8750 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC
16、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 General 7 2.1 Components 7 2.2 Units of measurement .7 2.3 Reference publications 7 3 Denitions 8 4 Power supplies, LED Drivers, and Transformers .12 CONSTRUCTION 5 Environmental Considerations .13 6 Mechanical Constr
17、uction 14 6.1 General 14 6.2 Metal thickness .14 6.3 Polymeric materials 15 6.4 Enclosure openings 16 6.5 Conductor protection .16 6.6 Strain relief .16 6.7 Potting compound 16A 7 Electrical Construction 16A 7.1 General .16A 7.2 Accessibility .16B 7.3 Internal wiring .19 7.4 Supply and load connecti
18、ons .21 7.5 Separation of circuits 28 7.6 Insulating materials 28 7.7 Printed wiring boards 29 7.8 Electrical spacings .30 7.9 Circuit components .32A 7.10 Protective devices 33 7.11 Coil insulation 34 7.12 Class 2 output circuits 38 PERFORMANCE 8 Performance Tests .38 8.1 General 38 8.2 Input test
19、.39 8.3 Temperature test 39 8.4 Temperature test alcove 45 8.5 Temperature test oven .47 8.6 Dielectric voltage withstand test .49 8.7 Abnormal tests 50 8.8 Circuit power limit measurement test .53 8.9 Leakage current measurement test 54 8.10 Cord strain and pushback relief test 57 8.11 Security of
20、output terminals 57 8.12 Insulation-piercing connection thermal cycling test 58 AUGUST 17, 2017 UL 8750 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8.13 Adhesive support test .58 8.14 Environmental tests 59 8.15 Mechanical strength test
21、s for metal enclosures 62 8.16 Determination of low-voltage, limited-energy circuit status .62 8.17 Knockout secureness test .63 9 Markings 63 9.1 General 63 9.2 Identication and ratings .64 9.3 Construction-related markings .65 SUPPLEMENT SA - REQUIREMENTS FOR SAFETY-RELATED ELECTRONIC CIRCUITS SA1
22、 Scope SA1 SA2 Denitions SA1 SA3 General SA2 SA4 Reliability Evaluation .SA3 SUPPLEMENT SB - REQUIREMENTS FOR TYPE HL LED DRIVERS SB1 Scope SB1 SB2 Construction SB1 SB3 Performance SB1 SB4 Marking SB1 SUPPLEMENT SC - REQUIREMENTS FOR TEMPERATURE LIMITED (TYPE TL) LED DRIVERS SC1 Scope SC1 SC2 Deniti
23、ons SC1 SC3 Construction SC1 SC4 Performance SC2 SC5 Marking SC3 SUPPLEMENT SD - REQUIREMENTS FOR LIGHT EMITTING DIODE (LED) PACKAGES SD1 Scope SD1 SD2 Denitions SD1 SD3 Environmental Considerations .SD3 SD3.1 Humidity conditioning .SD3 SD3.2 Dry locations .SD3 SD3.3 Damp locations .SD3 SD3.4 Wet lo
24、cations .SD4 SD4 Construction SD4 SD4.1 Spacings .SD4 SD4.2 Printed Wiring Boards (PWBs) SD4 SD4.3 Polymeric and other insulating materials Relative Thermal Index (RTI) .SD4 OCTOBER 21, 2016 UL 8750 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION F
25、ROM UL SD4.4 Polymeric and other insulating materials Flame rating .SD5 SD5 Performance SD5 SD6 Dielectric Voltage Withstand Test SD5 SD7 Steady Force Test 30 N SD6 SD8 Thermal Aging Test .SD11 SD9 Markings SD13 SUPPLEMENT SE - REQUIREMENTS FOR CLASS P LED DRIVERS SE1 Scope SE1 SE2 Denitions SE1 SE3
26、 Construction SE1 SE4 Performance SE2 SE4.1 General SE2 SE4.2 Temperature test SE2 SE4.3 Class P abnormal tests SE2 SE4.4 Leakage current measurement test SE7 SE5 Marking SE7 SUPPLEMENT SF - LED EQUIPMENT WITH WIRED CONTROL CIRCUITS SF1 Scope SF1 SF2 Denitions SF1 SF3 Separation of Circuits SF1 SF4
27、Control Circuit Lead Wires and Terminals .SF2 SF5 Control Circuit Characteristics .SF2 SF6 Temperature Test SF3 SF7 Dielectric Voltage Withstand Test SF3 SF8 Marking .SF3 SUPPLEMENT SG - DESIGNATION OF TEMPERATURE VALUE AT THE TEMPERATURE MEASUREMENT POINT T C SG1 Scope .SG1 SG2 Denitions SG1 SG3 Co
28、nstruction SG1 SG4 Performance SG1 SG5 Marking SG2 SUPPLEMENT SH - REQUIREMENTS FOR LED DRIVERS WITH PHASE-CUT DIMMING SH1 Scope SH1 SH2 Construction SH1 SH3 Performance SH1 SH4 Marking SH2 AUGUST 17, 2017 UL 8750 4AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITH
29、OUT PERMISSION FROM UL APPENDIX A Standards for ComponentsA1 AUGUST 17, 2017 UL 8750 4BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover LED equipment that is an integral part of a luminaire or
30、 other lighting equipment and which operates in the visible light spectrum between 400 700 nm. These requirements also cover the component parts of light emitting diode (LED) equipment, including LED drivers, controllers, arrays, modules, and packages as dened within this standard. 1.2 These lightin
31、g products are intended for installation on branch circuits of 600 V nominal or less in accordance with the National Electrical Code (NEC), ANSI/NFPA 70, and for connection to isolated (non-utility connected) power sources such as generators, batteries, fuel cells, solar cells, and the like. 1.3 LED
32、 equipment is utilized in lighting products that comply with the end-product standards listed below. The requirements in this standard are intended to supplement those in other end-product standards. Included are: a) Electric Signs, UL 48, b) Portable Electric Luminaires, UL 153, c) Underwater Lumin
33、aires and Submersible Junction Boxes, UL 676, d) Emergency Lighting and Power Equipment, UL 924, e) Stage and Studio Luminaires and Connector Strips, UL 1573, f) Track Lighting Systems, UL 1574, g) Luminaires, UL 1598, h) Direct Plug-In Nightlights, UL 1786, i) Low Voltage Landscape Lighting Systems
34、, UL 1838, j) Self-Ballasted Lamps and Lamp Adapters, UL 1993, k) Luminous Egress Path Marking Systems, UL 1994, and l) Low Voltage Lighting Systems, UL 2108. AUGUST 17, 2017 UL 8750 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 17
35、, 2017 UL 8750 6 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 General 2.1 Components 2.1.1 Except as indicated in this clause, a component of a product covered by this standard shall comply with the requirements for
36、that component. See the Standards for Components appendix for a list of standards covering components generally used in the products covered by this standard. 2.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the appli
37、cation of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.1.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.1.4 Specic components are incomplete in construction features or res
38、tricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 2.2 Units of measurement 2.2.1 Except for conductor size, values stated without pa
39、rentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.2.2 All values of voltage and current are true root mean square (rms) values unless otherwise indicated. 2.2.3 For customary purposes wire sizes are in American Wire Gauge (AWG). 2.3 Reference publicat
40、ions 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. SEPTEMBER 15, 2015 UL 8750 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT
41、PERMISSION FROM UL 3 Denitions 3.1 For the purpose of these requirements, the following denitions apply. 3.2 BARRIER A part of the unit intended to physically limit access to parts that pose a risk of electric shock. 3.3 CIRCUIT, CLASS2Acircuit supplied by an isolating source that complies with the
42、requirements of the Standard for Class 2 Power Units, UL 1310, or the Class 2 requirements of the Standard for Low Voltage Transformers Part 3: Class 2 and Class 3 Transformers, UL 5085-3. 3.4 CIRCUIT, ISOLATED LOW VOLTAGE LIMITED ENERGY (LVLE) A circuit supplied by a source with no direct electrica
43、l connection between input and output, such as provided by a transformer or optical isolator, and with output parameters as follows: source with a maximum output voltage of 42.4 V peak ac (30 V rms) or 60 V dc; and a maximum output current limited to: a) maximum 8 amps for 0 42.4 V peak ac, or03 0Vd
44、 c ,o r b) 150/V amps, for a voltage between 30 60 V dc. Measurements for determining LVLE circuit status shall be per the requirements in Determination of Low-Voltage, Limited-Energy Circuit Status of 8.16. 3.4.1 ENCLOSURE A housing of a unit that is intended to prevent contact with uninsulated par
45、ts that represent a risk of electric shock (electrical enclosure), contain any re initiated within the unit (re enclosure), and prevent mechanical damage to internal parts. 3.5 ENCLOSURE, ELECTRICAL A part of the equipment intended to limit access to parts operating at voltage levels that represent
46、a risk of electric shock per 3.24. 3.6 ENCLOSURE, FIRE A part of the equipment that encloses circuits that are considered a risk of re per 3.25. 3.7 ENVIRONMENTAL LOCATIONS a) DRY LOCATION A location not normally subject to dampness, but may include a location subject to temporary dampness, as in th
47、e case of a building under construction, provided ventilation is adequate to prevent an accumulation of moisture. b) DAMP LOCATION An exterior or interior location that is normally or periodically subject to condensation of moisture in, on, or adjacent to, electrical equipment, and includes partiall
48、y protected locations. c) WET LOCATION A location in which water can drip, splash, or ow on or against electrical equipment. 3.8 INSULATION-PIERCING TERMINAL A terminal having a contact pin that punctures the conductor insulation and penetrates between the conductor strands. 3.9 ISOLATED CIRCUIT A c
49、ircuit with only magnetic, capacitive, or optical connection to any ground-referenced supply source. A low voltage circuit derived by a dropping resistor is not isolated. AUGUST 17, 2017 UL 8750 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.10 LED (LIGHT EMITTING DIODE) A solid-state component embodying a p-n junction, emitting optical radiation when excited by an electric current. AUGUS
