Summary of Topics s1449_5_sum.htmlSummary of Topics
This Fifth edition of ANSI/UL 1449 includes the following revised requirements:
– Revision to 7.2.1.2 – Openings in an Enclosure for Type 3 SPDs; 3.12
– Revision to Allow Terminal Blocks Tested to UL 1059; 17.1.9, 17.2.4, 17.3.3
– Addition of 20.5 – 20.7 for PWBs
– Status Indicator Switch Performance Cycling Clarification; 21.2
– Clarification to Table 37.1 to Align with Table 45.2
– Clarification of 41.5.2 Regarding when External Protection is Relied Upon to Yield Compliant Performance Test Results
– Clarification of 41.5.2 for VPR Measurement for Type 1, 2, 3 and 4 Component Assemblies
– Clarify Testing for Integral Thermal Protection Operation Following Nominal Discharge Current Testing with Addition of 43.2
– Clarification of Table 45.1 to Include Delta Systems Up to 1000V
– Clarification of 45.1.11 Pertaining to Leakage and Ground Continuity Tests After Current Tests; 3.37
– Revision to 45.2.5 and 45.3.4 Related to Thermal Responsive Devices
– Clarification of Titles for Sections 47 and 48
– Revision to 52.11 to Include Polymeric Enclosures
– Editorial Correction in 59.1
– Revision to 78.1 to Correct a Reference
– Relocated Appendix A, Standards for Components, to Section 2, Referenced Publications