1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): OOLV, OOLV7Standard Number: UL 1993Standard Title: Standard for Self-Ballasted Lamps and Lamp AdaptersEdition Date: December 4, 2012Edition Number: 4Section
3、/ Paragraph Reference: SA8.8.2 (rev), SA8.8.3 (new) and SA10.2.7 (new)Subject: Drop impact test determination for severely damaged lampsDECISION:SA8.8.2 All devices for dry, damp, or wet locations and with LEDs shall be subjected to the drop testdescribed in Clause 8.8. The device is not powered dur
4、ing the test, but the assumption is that users mightpower the device after such an event to see if it is still functioning. Results to a Devices with glass orthermoplastic bulbs or lenses shall be considered additionally assessed as follows:a) In the event the bulb or lens surrounding the LEDs does
5、not break, the results can beconsidered acceptable. For devices rated for dry or damp locations, there shall be no breakage,cracks, holes or openings in the bulb or lens that permits access to hazardous live parts, asdetermined by Clause 6.7.b) In the event the bulb or lens surrounding the LEDs does
6、 break or crack, and For devicesrated for wet locations, there shall be no breakage, cracks, holes or openings.1) the device is rated for dry or damp locations, there shall be no breakage, cracks,holes, or openings of the glass or polymeric bulb resulting in risk of electric shock byaccessing the li
7、ve parts. Accessibility shall be determined using the test articulatedprobe in Figure 9.3, and2) the device is rated for wet locations, the result is unacceptable.SA8.8.3 With regard to clause SA8.8.2, lamp breakage is acceptable when the damage is so extensivethat it is unreasonable to assume an en
8、d-user would power the device after the impact, as determined bycompliance with this Clause. The test results are acceptable if:a) three samples are subjected to the Drop Impact test;b) at least 75% of each samples outer surface area above its base contacts breaks away, orbecomes permanently separat
9、ed. The surface area of interest is illustrated by the rectangulardotted box around the lamps in Figure SA8.8; andc) The device packaging is marked per Clause SA10.2.7.This is generated text for figtxt.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION
10、FROM ULSA10.2.7 For devices compliant with Clause SA8.8.3, the marking “CAUTION RISK OF ELECTRICSHOCK. Do not use if outer lamp envelope is damaged or broken.” shall be provided on smallest unitpackaging, point-of-sale package, carton, or instruction sheet packed with the device.RATIONALE FOR DECISI
11、ON:With traditional incandescent and fluorescent lamps, the issue of lamp damage was straightforward: oncethe outer glass envelope was damaged, the lamp ceased to work. In addition, due to the nature of theselamps any damage tended to be severe and visually apparent to an end-user. After many decade
12、s ofincandescent and fluorescent lamp use, the need to discard damaged lamps without first energizing themis considered self-evident and deeply ingrained in the general public.With the advent of general-use LED lamps, an end-users behavior was less predictable. LED lamps canbe constructed with subst
13、antial metal and plastic components, and surface damage to parts of the outerenclosure does not necessarily prevent normal lamp illumination. This, coupled with their relatively highprice as compared to incandescent lamps, meant that end-users were likely to energize lamps after animpact to determin
14、e if they were still useable. This made any enclosure damage a potential shock hazard,hence the accessibility determination in Clause SA8.8.2.However, many LED lamps are now designed and constructed to resemble traditional incandescent lightbulbs. These lamps are mostly or completely made from glass
15、 or thin plastic. When dropped, they tendto shatter or become substantially damaged.Figure SA8.8STANDARD NUMBER: UL 1993 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULWhen lamps are so severely damaged they lose most of their outer surfac
16、e area, the likelihood of anend-user installing and energizing them becomes remote. A lamp that would most likely be taken out ofservice and discarded would not be considered a shock risk. This decision quantifies this level of damageas 75% of the lamps surface area above its lamp base contacts. Lam
17、ps with less damage would besubject to the accessibility determination in Clause SA8.8.2.Copyright 2015 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or
18、 that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (A
19、NSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification R
20、equirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 1993 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 1993 -4-No Text on This Page
