UL 1029 CRD-2010 UL Standard for Safety High-Intensity-Discharge Lamp Ballasts - Section Paragraph Reference 22 3 1 C 22 3 3 Subject Loose-fill thermal insulation used in Recessed 2.pdf

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): FLCRStandard Number: UL 1029Edition Date: May 25, 1994Edition Number: 5Section / Paragraph Reference: 22.3.1 22.3.3Subject: Loose-fill thermal insulation use

3、d in Recessed Use Abnormal TemperatureTestDECISION:The description of this material in UL 1029 shall be revised to match the description in UL 1598, asfollows:22.3.1 Cellulosic insulation is to be rated for a thermal resistance of 3.75 - 3.85 R/inch with a conditioneddensity of 2.0 - 2.5 pounds per

4、cubic foot (32 - 40 kg/m3) Thermal insulation of the loose-fill type shall beconditioned to the density specified by the insulation manufacturer to obtain a required rated thermalresistance of Rsi 0.56 to 0.678 (R3.2 to R3.85).22.3.2 The insulation is to be conditioned through a blowing or vacuum ma

5、chine before being placedaround the ballast under test. The blowing or vacuum machine shall be capable of conditioning theinsulation to the density in 22.3.1 Thermal insulation shall be conditioned, if required, by a blowing orvacuum machine before it is placed around the test ballast. Density shall

6、 be verified by placing insulationinto a box of known volume and weight, and then weighing the filled box. The difference in weight betweenthe empty and full box, divided by the volume, shall be the insulation density.22.3.3 Insulation that has been conditioned through a blowing machine may be blown

7、 to allow it to fall intothe test box around the ballast enclosure or into a storage container. The insulation conditioned by ablowing machine into a storage container or by the vacuum machine into a storage container is to beplaced in the test box around the ballast enclosure by hand or scoop in a

8、manner to minimize packing orsetting.RATIONALE FOR DECISION:When UL 1570, UL 1571 and UL 1572 were consolidated into UL 1598, one of the many changes thatwere made was to the description of the loose-fill thermal insulation. Previous to UL 1598, the materialwas required to have an R-value between 3.

9、75 and 3.85 at a density of 2.0-2.5 lbs/in3. In UL 1598, therequirement was broadened to allow an R-value range of 3.2-3.85 and the density requirement wasdropped.Unfortunately, this change was not made to the description of this material in UL 1029. There was noapparent intention to use different i

10、nsulation to test recessed luminaires vs. recessed HID ballasts. Thedifference in the descriptions of the loose-fill insulation in these two standards appears to have been anoversight. The revisions in this decision will align UL 1029 with UL 1598, and is consistent with currenttest practice.Copyrig

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12、 issue or 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 Ins

13、titute (ANSI) 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 Requirement 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 1029 -2-