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): FFUQ2Standard Number: UL 2231-2Standard Title: Standard for Personnel Protection Systems for Electric Vehicle (EV)Supply Circuits: Particular Requirements fo
3、r Protection Devices for Use inCharging SystemsEdition Date: September 7, 2012Edition Number: 2Section / Paragraph Reference: Sections 14, 17, 18A, and Annex ASubject: Programmable ComponentsDECISION:14.3 A device with an automatic supervisory circuit shall be permitted to have an automatic reset fu
4、nctionwhich permits operation following an acceptable test. See 17.7 17.8.14.4 A device that has been evaluated to Annex A, Ref. No. 9, Annex A, Ref. No. 10, or both, shall bepermitted to have an automatic reset function when all of the following are met:a) There is shall be a minimum delay of 15 mi
5、nutes between the tripping function and thereset, andb) The device does shall not reset more than 4 times.c) A device having an automatic reset function utilizing solid state circuitry shall comply with therequirements in Annex A, Ref. No. 9.d) A device having an automatic reset function utilizing p
6、rogrammable components shallcomply with the requirements in 18A.1 - 18A.2.A manual intervention is able permitted to override the delay to the automatic reset. See 43.4.17.7 An automatic supervisory test system shall be subjected to analysis in accordance with: utilizing solidstate circuitry shall c
7、omply with the requirements in Annex A, Ref. No. 9.a) Annex A, Ref. No. 9,b) Annex A, Ref. No. 10, orc) Both (a) and (b), as appropriate.17.8 An automatic supervisory test system utilizing programmable components shall comply with therequirements in 18A.3 18A.4.18A Programmable Circuit ComponentsUL
8、COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL18A.1 If a programmable circuit component such as a microprocessor is employed in a device with anautomatic reset function as mentioned in 14.4, the device shall be investigated in accordance with t
9、herequirements of Annex A, Ref. No. 10 as defined in 18A.2.18A.2 The risks to be considered in the investigation mentioned in 18A.1 shall include the followingscenarios as applicable:a) Failure to trip under conditions where tripping should occur;b) Tripping at the wrong trip threshold value;c) Fail
10、ure of a supervisory circuit to complete evaluation;d) Unwanted tripping;18A.3 If a programmable circuit component such as a microprocessor is employed in a device employingan automatic supervisory test system, as mentioned in 14.3 and 17.8, the applicable portion of the deviceshall be investigated
11、in accordance with the requirements of Annex A, Ref. No. 10 as defined in 18A.4.18A.4 The risks to be considered in the investigation mentioned in 18A.3 shall include the followingscenarios as applicable:a) Failure of supervisory circuit to complete evaluation;b) Failure of the supervisory circuit t
12、o indicate an unacceptable test result;Annex A:Ref. No. Clause No. Canada Mexico United States9 14.4(c)17.7 (a)Safety FunctionsIncorporating ElectronicTechnology, CSAC22.2 No. 0.8 Control Class B appliesTests for Safety-Related ControlsEmploying Solid-State Devices, UL 99110 14.417.7 (b)18A.1, 18A.3
13、Safety FunctionsIncorporating ElectronicTechnology, CSAC22.2 No. 0.8 Control Class B appliesSoftware in ProgrammableComponents, UL 1998RATIONALE FOR DECISION:UL 2231-2, The Standard for Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits:Particular Requirements for Protection Devi
14、ces for Use in Charging Systems, contains requirements forprogrammable components and hardware reliability. These requirements are applicable when a device isprovided with an automatic reset function or an automatic test feature. This CRD clarifies whichrequirements are applicable to the each constr
15、uction allowed by the Standard. The above requirementsrepresent current practice.Copyright 2014 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that th
16、ey will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inSTANDARD NUMBER: UL 2231-2 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULpractically applying the requireme
17、nts of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (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 liabi
18、lity 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 2231-2 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 2231-2 -4-No Text on This Page
