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): QVRQ2Standard Number: Subject 2367Edition Date: May 13, 2004Edition Number: 1Section / Paragraph Reference: New 9A, 9A.1, 9A.2, and 9A.3Subject: Evaluation o
3、f Special Purpose Solid-State Overcurrent Protectors for Useas Class 2 LimitersDECISION:9A Outputs or Terminals Marked Class 2 per NFPA 70, Article 7259A.1 An output or terminal marked or otherwise identified as being suitable for Class 2 wiring methodsshall comply with the output voltage, output cu
4、rrent, output power, output overload, and component faultrequirements specified in UL 1310 (Class 2 Power Units), under the maximum voltage and current sourcecapacity to which the Protector may be supplied.9A.2 The source to a Protector that supplies Class 2 in accordance with 18A.1 shall comply wit
5、h theinsulation, spacing and overload requirements specified in one of the following:a) UL 1310 (Class 2 Power Units)b) UL 5085-3 (Class 2 Transformers)9A.3 Following each of the tests specified in 18A.1, the Protector shall comply with the Calibration Test.RATIONALE FOR DECISION:NFPA 70, Article 72
6、5.121(A)(3) provides that a power source for Class 2 circuits may be other listedequipment that is marked to identify the Class 2 power source.This decision provides that special purpose solid-state overcurrent protectors may be evaluated to serveas a Class 2 limiter where they are:a) Intended to be
7、 used on the load-side of an isolating transformer, power supply or battery,b) Designed for factory wiring only, andc) Evaluated to meet Class 2 specification limits both before and after abnormal conditions.Copyright 2009 Underwriters Laboratories Inc.UL, in performing its functions in accordance w
8、ith its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may 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 t
9、he standard. They do not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULanyone for the use of or relia
10、nce 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: SUBJECT 2367 -2-
