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):Standard Number: ULStandard Title: Standard forEdition Date: August 20, 2014Edition Number: 4Section / Paragraph Reference: Section 44Subject: Table 44.1DECISION:Table 44.1Test voltage selection tableN
3、ominal voltage rating Phase Minimum test voltagea, cd0 109V Single Twice Rated Voltage110 219V Single 240220 229V Single 380230 239V Single 400240 345V Single 480346 399V Single 600400 499V Single 690500 1000V Single Twice Rated Voltage Up toMax 1000V110 120/220 240V Split 240120/208V 3-WYE 208220/3
4、80V 3-WYE 380230/400V 3-WYE 400220 240/380 415V 3-WYE 415240/415V 3-WYE 415254 277/440 480V 3-WYE 480346/600V 3-WYE 600400/690V 3-WYE 690120/240V High leg delta 240240/480V High leg delta 4800 - 1000240V Delta bc480V Delta c600V Delta baFor device voltage ratings not specified in this table, the tes
5、t voltage shall be the maximumphase voltage (if available) or twice the conductor pair voltage rating up to 1000Vmax.bSPDs rated for use on a Delta power distribution system shall be subjected to the Shortcircuit current rating and Intermediate current tests, with a minimum test voltage the fullphas
6、e (L-L) voltage. The Limited current abnormal over voltage test is Abnormal AbnormalOvervoltage Tests are not required to be conducted on 600V delta rated units, but shortcircuit testing shall be performedperformed SPDs rated for use on a Delta power distributionsystem.cThe Short Circuit and Interme
7、diate Current tests are performed at the full phase voltage.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 44.1 ContinuedNominal voltage rating Phase Minimum test voltagea, cdcdThe test voltage may be increased beyond the minimum values
8、 when agreed upon by allconcerned parties.RATIONALE FOR DECISION:Clarify Current testing for SPDs intended for connection on delta power systemsCopyright 2018 UL LLCUL LLC, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Re
9、quirement Decisions it may issue or that they will be recognized or adoptedby anyone. 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
10、Institute (ANSI) processes. UL LLC shall not be responsible to anyone forthe use 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 CertificationRequirement 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 -2-
