1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(
2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): LZFE, LZPG, ACKZ, ACOT, ACVS, AFFTStandard Number: UL 60335-2-40Standard Title: Standard for Household and Similar Electrical Appliances, Part 2:Particular Requirements for Electrical Heat Pumps, Air-
3、Conditioners andDehumidifiersEdition Date: September 15, 2017Edition Number: 2Section / Paragraph Reference: SeveralSubject: Corrections to clarify requirements and to address differences between IECrequirements and NFPA 70 allowed constructionsDECISION:This is also applicable to the first edition d
4、ated November 30, 2012.Decision 3:13.3DV Modification of Clause 13.3 of the part 1 to add the following:A DC potential equivalent to 1,414 times the test voltage specified in Table 4 may be applied.16.3DV Modification of Clause 16.3 of the part 1 to add the following:A DC potential equivalent to 1,4
5、14 times the test voltage specified in Table 7 may be applied.RATIONALE FOR DECISION:This Certification Requirement Decision (CRD) is to clarify that the Electric Strength may be conducted byan equivalent DC method. The DC method is conducted at 1.414 times the test voltage, this factor is usedto de
6、termine the peak value of the rms waveform for the test voltages as specified in tables 4 and 7.The DC test method was previously approved by the STP for legacy standards UL 1995 and UL 484 andis approved in the Standard for Safety For Automatic Electrical Controls Part 1: General Requirements,UL 60
7、730-1 ed. 5. The wording is based on UL 60730-1 Table 12 Note 1.Copyright 2018 UL LLCUL LLC, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby an
8、yone. Certification Requirement Decisions are the opinion of UL LLC. in practically applying therequirements of the standard. They do not represent formal interpretations of the standard underAmerican National Standards Institute (ANSI) processes. UL LLC shall not be responsible to anyone forthe use
9、 of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur anyobligation or liability for damages, including consequential damages, arising out of or in connection withthe use or reliance upon Certification Requirement Decisions. The electronic version of the Certific
10、ationRequirement Decision is the current version and previously printed copies may be outdated.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis document is published as a service to ULs certification customersSTANDARD NUMBER: UL 60335-2-40 -2-
