1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL TECHNICAL GUIDANCE DOCUMENTSThis Document is prepared and published by UL.Product Category (CCN): FKSZ, FKSZ2, FKSZ3Standard Number: UL 8750Standard Title: Standard for Light Emitting Diode (L
2、ED) Equipment for Use inLighting ProductsEdition Date: September 15, 2015Edition Number: 2Section / Paragraph Reference: 4.1Subject: Application of Clause 4.1 to an LED Power Supply or DriverGUIDANCE:Clause 4.1 provides options for an LED power supply or driver to comply with the requirements of UL
3、8750via application of UL power supply and ballast standards. These standards are:a) Class 2 Power Units, UL 1310,b) Information Technology Equipment, UL 60950-1,c) Power Units Other Than Class 2, UL 1012 ord) Fluorescent-Lamp Ballasts, UL 935.The intent is to leverage independent evaluation of a po
4、wer supply device that may in part additionallymeet the intent of the requirements within UL 8750. However, Clause 4.1 is not intended to allow forselecting only portions of the referenced power supply and ballast standards when determiningcompliance with UL 8750.The requirements of UL 8750 apply in
5、 their entirety to an LED power supply or driver. However, there arerequirements in common with some requirements in the aforementioned power supply and ballaststandards. For these requirements only, where there is equivalency with the requirements of UL 8750, therequirements of the power supply or
6、ballast standard may be applied.Choosing to apply Clause 4.1 in an evaluation is a customer choice. When applying Clause 4.1, UL staffand the customer need to consider the most appropriate evaluation approach for the LED power supplyor driver in question and then agree on the option (standard) to im
7、plement. The flow chart below can beused as a tool for this purpose. Once the option is selected, only the requirements from the selectedstandard are applicable. It is not appropriate to choose individual requirements from the other standardsin Clause 4.1 to address specific construction and / or pe
8、rformance requirements. In other words, there isno option that combines or integrates the requirements of the different power supply and ballaststandards.In cases where a construction or feature is not anticipated in the selected standard, then UL 8750 is usedto mitigate the potential risks. Where U
9、L 8750 does not currently address the construction or feature, ULstaff will use established procedures to develop requirements and ultimately process them through the UL8750 consensus standards committee (STP 8750).This is generated text for figtxt.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
10、REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 8750 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULRATIONALE FOR GUIDANCE:UL 8750 specifies the requirements for LED power supplies and drivers. Implementing combin
11、ations ofrequirements not specified in UL 8750 is outside the intent of the standard and requires additionalinformed consideration.The various power supply standards substantially fulfill the requirements of UL 8750 to the extent practicalfor devices having more general application or intended for p
12、urposes other than lighting. However, eachstandard represents a holistic system of construction, performance and marking requirements that areintended to be collectively applied. The systems employed by the standards vary. For example, to mitigaterisk of fire, one standard might heavily rely on cons
13、truction requirements with limited testing while anotherstandard might instead require extensive testing with limited construction requirements. These importantdifferences will often not be appreciated during casual application of requirements from the severalstandards.Copyright 2015 Underwriters La
14、boratories Inc.ULs Technical Guidance Documents are intended to be used as reference documentation and aredesigned to provide assistance in understanding the application of requirements contained in thecorresponding UL Standard, provide assistance in addressing the use and applications of the respec
15、tiveproducts covered by the associated UL Standard(s), or both.These guidelines do not contain any construction or performance requirements.STANDARD NUMBER: UL 8750 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 8750 -4-No Text on This Page
