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): IFAM/7, IFAO/7Standard Number: UL 1598Standard Title: Standard for LuminairesEdition Date: Sep
2、tember 17, 2008Edition Number: 3Section / Paragraph Reference: Not ApplicableSubject: Type TL LED Driver SubstitutionGUIDANCE:1. Alternative Type TL drivers can be permitted without the need to conduct additional temperature testswhen all the following conditions are met.a. The alternate Type TL dri
3、ver input current and input power ratings are equal or lower thanthat of the original Type TL driver ratings,b. When the original Type TL LED driver is a constant current output type, the alternate TypeTL driver output current setting (if adjustable) or rating (if not adjustable) should be equal orl
4、ower than that of the original TL driver;c. When the original Type TL driver is a constant voltage output type, the alternate Type TLdriver output voltage rating should be equal to or lower than that of the original TL driver;d. The alternate TL driver output power setting (if adjustable) or rating
5、(if not adjustable) shouldbe equal or higher than that of the original TL driver;e. The alternate Type TL driver should have a Tref maxequal to or higher than the temperatureobserved at Tcpoint on the original Type TL driver,f. The alternate Type TL driver should have a Measured Trefequal to or lowe
6、r than theMeasured Trefon the original Type TL driver,In addition the following characteristics should be considered as part of the substitution decision.g. The alternate Type TL driver has the same supply connection method as the original TypeTL driver,h. The alternate Type TL driver should have th
7、e same input type as the original Type TL driver,i. The alternate Type TL driver should have the same output type as the original Type TL driver-see notes below andj. The alternate Type TL driver should have the same environmental condition rating as theoriginal Type TL driver- see notes below.Notes
8、:UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULa. LED drivers with isolated, Class 2 or LVLE output types are also acceptable as alternate fora LED driver with non-isolated output. LED drivers with Class 2 or LVLE output types are alsoaccept
9、able as alternate for a LED driver with isolated output. LED drivers with Class 2 outputtypes are also acceptable as alternate for a LED driver with LVLE output.b. LED drivers rated wet are also acceptable for use in damp and dry locations. LED driversrated damp are also acceptable for use in dry lo
10、cations.2. Alternate Type TL drivers not meeting all item 1 conditions above should be evaluated by test orconstruction evaluation.3. Manufacturers can implement a no test substitution in production. UL Follow UP Representatives mayrequest any documentation related to the substitution choice during
11、regular visits.RATIONALE FOR GUIDANCE:A Type TL LED Driver has been evaluated per applicable requirements of UL 8750 CertificationRequirement Decision (CRD) dated 2014-04-28, as a thermally limited driver having the followingcharacteristics:(a) The maximum case temperature at any point on the exteri
12、or surface of the driver is limitedto 90 C maximum under normal rated load conditions while tested in a uniform andstandardized ambient environment.(b) The maximum case temperature at any point on the exterior surface of the driver is limitedto 110 C maximum under any condition of single component f
13、ault or under any overloadcondition including a shorted output, while tested in a uniform and standardized ambientenvironment.(c) Includes a manufacturer identified Tcpoint location on the exterior surface of the driver.There are 2 temperature values associated with Tcpoint.I. Tref maxis the maximum
14、 permitted temperature at the Tcpoint at which all componentsand materials in the LED driver are expected to operate below their thermal safetylimits. As part of the Type TL LED driver program, the Tref maxvalue specified by themanufacturer is verified (and adjusted as necessary).II. The Measured Tr
15、efvalue is the temperature observed at the TCpoint duringtemperature testing.Since Type TL drivers are tested using uniform loads and uniform environmental (including test chamberand specified ambient) conditions, the thermal ratings- Measured Trefand Tref max- can be used tocompare the thermal perf
16、ormance of one driver to another, so that substitution of drivers- with certaincharacteristics- can be allowed without the need for repeat testing.UL 8750 CRD for Type TL LED Driver dated 2014-04-28.Copyright 2015 Underwriters Laboratories Inc.ULs Technical Guidance Documents are intended to be used
17、 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 respectiveproducts covered by the associated UL Standard(s), or both.STANDARD
18、 NUMBER: UL 1598 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThese guidelines do not contain any construction or performance requirements.STANDARD NUMBER: UL 1598 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 1598 -4-No Text on This Page
