1、UL 60730-2-7ISBN 0-7629-0754-1Automatic Electrical Controlsfor Household and Similar Use;Part 2: ParticularRequirements for Timers andTime SwitchesUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Automatic Electrical Controls for Household and
2、Similar Use; Part 2: ParticularRequirements for Timers and Time Switches, UL 60730-2-7First Edition, Dated February 11, 2002Revisions: This Standard contains revisions through and including December 5, 2002.Summary of TopicsThis revision of UL 60730-2-7 is being issued to include requirements to cor
3、relate the standardwith UL 60730-1A and to include requirements covering plug-in devices.Text that has been changed in any manner is marked with a vertical line in the margin. Changes inrequirements are marked with a vertical line in the margin and are followed by an effective date noteindicating th
4、e date of publication or the date on which the changed requirement becomes effective.The revised requirements are substantially in accordance with ULs Bulletin(s) on this subject datedFebruary 8, 2002. The bulletin(s) is now obsolete and may be discarded.The master for this Standard at ULs Northbroo
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18、on-line screen view or the printed Standard.An employee of an organization purchasing a UL Standard can make a copy of the page or pages beingviewed for their own fair and/or practical internal use.The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, fi
19、gures,and/or other elements of the Standard having future effective dates as indicated in the preface. The priortext for requirements that have been revised and that have a future effective date are located after theStandard, and are preceded by a SUPERSEDED REQUIREMENTS notice.New product submittal
20、s made prior to a specified future effective date will be judged under all of therequirements in this Standard including those requirements with a specified future effective date, unlessthe applicant specifically requests that the product be judged under the current requirements. However, ifthe appl
21、icant elects this option, it should be noted that compliance with all the requirements in thisStandard will be required as a condition of continued Listing, Recognition, and Follow-Up Services afterthe effective date, and understanding of this should be signified in writing.It should be noted that i
22、n an effort to more closely match the IEC text, information in the following checklistrelated to annexes may not correlate correctly at this time with the annex identification in the annexesthemselves. This information will be correct in future revision cycles.Copyright 2002 Underwriters Laboratorie
23、s Inc.DECEMBER 5, 2002 UL 60730-2-7tr2This Standard consists of pages dated as shown in the following checklist:Page Date1-2February 11, 20023-4 .December 5, 20025-9February 11, 200210December 5, 200211-13 .February 11, 200214December 5, 200215-17 .February 11, 200218-18B December 5, 200219-23 .Febr
24、uary 11, 200224December 5, 200225-31 .February 11, 200232-32B December 5, 200233-34 .February 11, 2002A1-A2 .February 11, 2002B1-B2.December 5, 2002C1-C2.December 5, 2002DECEMBER 5, 2002 UL 60730-2-7 tr3DECEMBER 5, 2002 UL 60730-2-7tr4No Text on This PageFEBRUARY 11, 20021UL 60730-2-7Standard for Au
25、tomatic Electrical Controls for Household and Similar Use;Part 2: Particular Requirements for Timers and Time SwitchesPrior to the first edition of UL 60730-2-7, the requirements for the productscovered by this Standard were included in UL 8730-2-7.First EditionFebruary 11, 2002An effective date inc
26、luded as a note immediately following certain requirementsis one established by Underwriters Laboratories Inc.Revisions of this Standard will be made by issuing revised or additional pagesbearing their date of issue. A UL Standard is current only if it incorporates themost recently adopted revisions
27、, all of which are itemized on the transmittal noticethat accompanies the latest set of revised requirements.ISBN 0-7629-0754-1COPYRIGHT 1995, 2002 UNDERWRITERS LABORATORIES INC.FEBRUARY 11, 2002UL 60730-2-72No Text on This PageCONTENTSPreface (UL) 5Foreword (UL) 6NATIONAL DIFFERENCES .7FOREWORD 81
28、Scope 101.5 Normative references 112 Definitions 112.3 Definitions relating to the function of controls .112.5 Definitions of type of control according to construction .123 General requirement .124 General notes on tests .124.3.2 Addition: 125 Rating 136 Classification 136.3 According to their purpo
29、se 136.4 According to features of AUTOMATIC ACTION .136.10 According to number of cycles of ACTUATION(M) for each manual ACTUATION: .146.15 According to construction .147 Information 147.2 Methods of providing information 148 Protection against electric shock .159 Provision for protective earthing .
30、1510 Terminals and TERMINATIONS .1611 Constructional requirements 1611.4 Actions 1611.9DV.1 INDEPENDENTLY mounted 1811.101DV.1 Plug-in devices 1812 Moisture and dust resistance .18B13 Electric strength and insulation resistance 18B14 Heating 18B14.101 Temperature stress test .18B15 MANUFACTURING DEV
31、IATION and DRIFT .18B16 Environmental stress .18B17 Endurance .1917.1.3 Test sequence and conditions 1917.2 Electrical conditions for the tests .2017.16 Test for particular purpose controls 2018 Mechanical strength .2419 Threaded parts and connections 2420 CREEPAGE DISTANCES, CLEARANCES and distance
32、s through insulation .2521 Resistance to heat, fire and tracking 2522 Resistance to corrosion 2623 Radio interference suppression .2624 Components .2625 Normal OPERATION 2626 OPERATION with mains borne perturbations, magnetic and electromagnetic disturbances 26DECEMBER 5, 2002 UL 60730-2-7 327 Abnor
33、mal OPERATION .26AnnexesAnnex D Heat, fire and trackingD.101 High voltage, low current dry arc resistance of solid electrical insulation 27D.101.1 General 27D.101.2 Equipment .27D.101.3 Calibration 28D.101.4 Test Specimen 28D.101.5 Conditioning 28D.101.6 Test .29Annex H (normative) Requirements for
34、ELECTRONIC CONTROLSH.7 Information 32H.26 OPERATION with mains borne perturbations, magnetic and electromagnetic disturbances 32H.26.5 Test of the influence of voltage dips and short voltage interruptions in the power supplynetwork .32H.26.6 Test of influence of voltage unbalance 32H.26.7 Test of th
35、e influence of d.c. in a.c. networks .32H.26.8 1,2/50s 8/20s voltage-current surge test .32AH.26.9 Fast transient bursts test 33H.26.10 Ring wave test 33H.26.11 Electrostatic discharge test .33H.27 Abnormal OPERATION .34Annex AAANNEX DVA (normative) OpeningsANNEX DVC (normative) MarkingsANNEX DVE (n
36、ormative) GroundingDECEMBER 5, 2002UL 60730-2-74Preface (UL)This UL Standard 60730-2-7, Standard for Safety for Automatic Electrical Controls for Household andSimilar Use; Part 2: Particular Requirements for Timers and Time Switches, is to be used in conjunctionwith the third edition of UL 60730-1A.
37、 The requirements for timers and time switches are contained in thispart 2 Standard and UL 60730-1A.Requirements of this part 2 Standard, where stated, amend the requirements of UL 60730-1A.Where a particular subclause of UL 60730-1A is not mentioned in UL 60730-2-7, the 60730-1A subclauseapplies.Th
38、e text, figures and tables of IEC Publication Automatic Electrical Controls for Household and SimilarUse; Part 2: Particular Requirements for Timers and Time Switches, IEC 60730-2-7 copyright 1990, asamended in 1994 are used in this Standard with the consent of the IEC and the American NationalStand
39、ards Institute (ANSI). The IEC copyrighted material has been reproduced with permission fromANSI. ANSI should be contacted regarding the reproduction of any portion of the IEC material. The IECForeword and Introduction are not a part of the requirements of this Standard but are included forinformati
40、on purposes only. Copies of IEC Publication 60730-2-7 may be purchased from ANSI, 11 West42ndStreet, New York, New York, 10036, (212) 642-4900.Note Although the intended primary application of this Standard is stated in its Scope, it is important to notethat it remains the responsibility of the user
41、s of the Standard to judge its suitability for their particular purpose.FEBRUARY 11, 2002 UL 60730-2-7 5Foreword (UL)A. This Standard contains basic requirements for products covered by Underwriters Laboratories Inc. (UL)under its Follow-Up Service for this category within the limitations given belo
42、w and in the Scope sectionof this Standard. These requirements are based upon sound engineering principles, research, records oftests and field experience, and an appreciation of the problems of manufacture, installation, and usederived from consultation with and information obtained from manufactur
43、ers, users, inspection authorities,and others having specialized experience. They are subject to revision as further experience andinvestigation may show is necessary or desirable.B. The observance of the requirements of this Standard by a manufacturer is one of the conditions of thecontinued covera
44、ge of the manufacturers product.C. A product which complies with the text of this Standard will not necessarily be judged to comply withthe Standard if, when examined and tested, it is found to have other features which impair the level ofsafety contemplated by these requirements.D. A product that c
45、ontains features, characteristics, components, materials, or systems new or differentfrom those covered by the requirements in this standard, and that involves a risk of fire or of electric shockor injury to persons shall be evaluated using appropriate additional component and end-productrequirement
46、s to maintain the level of safety as originally anticipated by the intent of this standard. Aproduct whose features, characteristics, components, materials, or systems conflict with specificrequirements or provisions of this standard does not comply with this standard. Revision of requirementsshall
47、be proposed and adopted in conformance with the methods employed for development, revision, andimplementation of this standard.E. UL, in performing its functions in accordance with its objectives, does not assume or undertake todischarge any responsibility of the manufacturer or any other party. The
48、 opinions and findings of ULrepresent its professional judgment given with due consideration to the necessary limitations of practicaloperation and state of the art at the time the Standard is processed. UL shall not be responsible to anyonefor the use of or reliance upon this Standard by anyone. UL
49、 shall not incur any obligation or liability fordamages, including consequential damages, arising out of or in connection with the use, interpretation of,or reliance upon this Standard.F. Many tests required by the Standards of UL are inherently hazardous and adequate safeguards forpersonnel and property shall be employed in conducting such tests.FEBRUARY 11, 2002UL 60730-2-76NATIONAL DIFFERENCESGENERALNational Differences from the text of International Electrotechnical Commission (IEC) Publication60730-2-7, Automatic Electrical Controls for Household and Simila
