1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60730-2-7Standard for Automatic Electrical Controls for Household and Similar Use; Part 2: ParticularRequirements for Timers and Time SwitchesUL COPYRIGHTED MATERIAL NO
2、T AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60730-2-7Standard for Automatic Electrical Controls for Household and Similar Use; Part 2: ParticularRequirements for Timers and Time SwitchesEdition: 2Edition Date: March 21, 2014These revision
3、s are being issued to reflect the established effective date for UL60730-2-7. For further information regarding Summary of Requirements, please visithttps:/ OF OCTOBER 19, 2018, THE FIRST EDITION OF UL 60730-2-7, THE THIRD EDITIONOF UL 244A, AND THE FIFTH EDITION OF UL 917 WILL BE WITHDRAWN AND WILL
4、BE REPLACED BY THIS STANDARD.This document provides a single listing of the National Differences included in the UL adoption ofthe corresponding IEC standard.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, elec
5、tronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.UL provides this standards document as is without warranty of any kind, either expressed or implied,including but not limited to, the implied warranties of merchantability or fitness for any purpose.In no event wi
6、ll UL be liable for any special, incidental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinability to use this standards document, even if UL or an authorized UL representative has been advised
7、of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the pricepaid for this standards document, regardless of the form of the claim.Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against a
8、ny loss, expense, liability, damage, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purchasers computer system.Copyright 2014 Underwriters Laboratories Inc.JULY 24, 2014NATIONAL DIFFEREN
9、CES FOR UL UL 60730-2-72UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National Differences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standard
10、s, UL uses the notations indicated below to identify national difference type, andthese types are additionally noted in this document. The standard may not use all types of thesedeviations.D1 - These are deviations which are based on basic safety principles and requirements, elimination ofwhich woul
11、d compromise safety for U.S. consumers and users of products.D2 - These are deviations based on safety practices. These are deviations for IEC requirements that maybe acceptable, but adopting the IEC requirements would require considerable retesting or redesign on themanufacturers part.DC - These ar
12、e deviations based on the component standards and will not be deleted until a particularcomponent standard is harmonized with the IEC component standard.DE - These are deviations based on editorial comments or corrections.DR - These are deviations based on the national regulatory requirements.Each n
13、ational difference contains a description of what the national difference entails. Typically one of thefollowing words is used to explain how the text of the national difference is to be applied to the base IECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause
14、, table,figure, or annex. Addition is not meant to include adding select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause,table, figure, or annex without any replacement text.Modification / Modify - A modification is an alter
15、ing of the existing base IEC text such as theaddition, replacement or deletion of certain words or the replacement of an entire clause,subclause, table, figure, or annex of the base IEC text.JULY 24, 2014 NATIONAL DIFFERENCES FOR UL UL 60730-2-7 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER RE
16、PRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences1.101DV DE Addition of the following to the part 2:In IEC terminology, safety is defined as an acceptable level of risk. This is consistent with the intention of ULrequirements to reduce the risk of fire, shock or injury to pers
17、ons.2.1.101DV D2 Addition to the Part 2:CURRENT INRUSH FACTOR: CURRENT INRUSH FACTOR denotes the number by which the normal(steady-state) peak current through a load is multiplied to obtain the peak value of theinrush current through the load.Such as for TV, tungsten and PILOT DUTY loads.4.3.2.101DV
18、 D2 Addition to the part 2:A permanently connected TIMER that has been tested for an ampere or horsepower rating,or both, may have a tungsten-filament load rating, even though it has not been tested fora tungsten-filament lamp load rating, provided the tungsten-filament lamp load rating doesnot exce
19、ed one-tenth the value of the ampere rating or the full-load motor-running current,whichever is greater.4.3.2.102DV D2 Addition to the part 2:An in-line cord or plug-in TIME SWITCH that operates on and off a minimum of once in 24 hshall have a tungsten-filament lamp load rating.Table 7.2DV D2 Replac
20、ement of Table 7.2 of the part 2:JULY 24, 2014NATIONAL DIFFERENCES FOR UL UL 60730-2-74UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable7.2DVInformationClauseorsubclauseMethodModification: Replacethelinescorrespondingtoitems7,26,27and28byt
21、hefollowing:7Thetypeofloadcontrolledbyeachcircuit7),101),101A)14,17,6.2C26NumberofcyclesofACTUATION(M)foreachMANUALACTION102)6.10X27Numberofautomaticcycles(A)foreachAUTOMATICACTION102)6.11X28Ageingperiod(Y)forType1.Mor2.Maction102)6.16XAdditiontonote7:7HighinductiveorHifintendedforthecontrolofhighin
22、ductiveloadssuchasgas-tube-signtransformers,fluorescentlamploads,andthelike.Additionalnotes:101AUnlessanin-lineorplug-inTIMESWITCHisacceptableforusewithafull-loadoftungsten-filamentlamps,itshallbemarkedtoindicatethemaximumconnectedincandescentlamploadinwatts.Thevalueoflampwattageistobenotlessthantha
23、tequivalenttoone-tenthofthefull-loadrating.102AAswitchistobeoperatedbymeansofitsACTUATINGMEMBEReithermanuallyorbyanacceptablemachineforaminimumof6000cyclesunlessaparticularapplicationrequiresahighernumberofcyclestobedeclared.Switchcyclesforin-linecord,free-standingandINDEPENDENTLYMOUNTEDCONTROLS,see
24、AnnexAA.103AChangeTVtoTV-.Changeamperetoampereratingexpressedinanintegervalue.Example:TV-8/240.JULY 24, 2014 NATIONAL DIFFERENCES FOR UL UL 60730-2-7 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL9.5.101DV D2 Addition of 9.5.101DV.1 to 9.5.
25、101DV.4 to the part 2:9.5.101DV.1 A permanently connected clock-operated switch or one with a polarized orgrounded attachment plug shall not disconnect the grounded conductor of a circuit unlessone of the following conditions occur:a) The switch simultaneously disconnects all the conductors of the c
26、ircuit, orb) The switch is so arranged that the grounded conductor cannot bedisconnected until all the ungrounded conductors of the circuit have beendisconnected.9.5.101DV.2 OPERATION of a permanently connected clock-operated switch, with a marked OFFPOSITION that disconnects any conductor of an out
27、put circuit, shall disconnect allungrounded conductors of the same circuit simultaneously.9.5.101DV.3 A cord-connected switch that has a polarized or grounded attachment plugshall comply with 9.5.101DV.2.9.5.101DV.4 In determining compliance with 9.5.101DV.2 and 9.5.101DV.3, overcurrent andother pro
28、tective devices are considered to provide OPERATION. In addition, all poles of amultiple switching device are considered to operate simultaneously.11.9DV D2 Modification to 11.9 of the UL part 1 by adding the following:11.9DV.1 INDEPENDENTLY mounted11.9DV.1.1 The flexible cord is to be of jacketed c
29、onstruction not lighter than Type SJ;except that a device having a maximum rating of 2 000 VA, 1 hp, or 300 V, may be providedwith a cord not lighter than Type SP-2.11.9DV.1.2 The flexible cord shall have a minimum length of 6 inch (152 mm) and shall notexceed 10 ft (3,05 m).11.101DV D2 Addition to
30、the part 2:11.101DV.1 Plug-in devices11.101DV.1.1 A clock-operated switch having attachment-plug blades for plug-inconnection to a receptacle outlet rated 15 A, 125 V, and having the ANSI/NEMA WD6-1988slot configuration shall have a mass of 28 oz (0.79 kg) or less. The moment, center ofgravity, and
31、dimensions shall not exceed the limits specified in 11.101DV.1.2.11.101DV.1.2 The moment, center of gravity, and dimensions of a clock-operated switch,see Figure 11.101DV.1, shall comply with each of the following:a) The quotient of WY/Z shall not exceed 48 oz (1.36 kg).b) The quotient of WY/S shall
32、 not exceed 48 oz.c) The product of WX shall not exceed 80 oz-inch (0.56 Nm).d) The dimension Z3shall not exceed 3-1/4 inches (82.6 mm).JULY 24, 2014NATIONAL DIFFERENCES FOR UL UL 60730-2-76UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULe) Th
33、e dimensions S1,S2,Z1, and Z2shall not exceed 5 inches (127 mm).11.101DV.1.3 Definitions for the symbols used in 11.101DV.1.2 are as follows:W is the weight of the switch in ounces (kg),Y is in inches (mm),Z is the smaller of Z1or Z2in inches (mm),S is the smaller of S1or S2in inches (mm), andX is t
34、he larger of X1or X2in inches (mm).Figure 11.101DV.1 D2 Addition:This is generated text for figtxt.JULY 24, 2014 NATIONAL DIFFERENCES FOR UL UL 60730-2-7 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFigure 11.101DV.1Plug-in device limits o
35、f dimensionsJULY 24, 2014NATIONAL DIFFERENCES FOR UL UL 60730-2-78UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL17.2.4DV D2 Modification of 17.2.4 of the UL part 1 by adding the following:On d.c., the dead metal parts will be positive with r
36、espect to the nearest arcing point in theswitch.18.9DV D2 Deletion of 18.9 of the part 1:Delete 18.9.Table 20.3DV D2 Replacement of Table 20.3 in the UL part 1 with Table 20.3DV:Table 20.3DV Minimum CREEPAGE DISTANCES for BASIC INSULATIONRatedvoltageup toandincludingCREEPAGE DISTANCES1)mmPOLLUTION D
37、EGREE1234Material group Material Group Material GroupV I II III2)I II III2)I II III2)50 0,2 0,6 0,9 1,2 1,5 1,7 1,9 2,0 2,5 3,2125 0,3 0,8 1,1 1,5 1,9 2,1 2,4 2,5 3,2 4,0250 0,6 1,3 1,8 2,5 3,2 3,6 4,0 5,0 6,3 8,0400 1,0 2,0 2,8 4,0 5,0 5,6 6,3 8,0 10,0 12,5500 1,3 2,5 3,6 5,0 6,3 7,1 8,0 10,0 12,5
38、16,0630 1,8 3,2 4,5 6,3 8,0 9,0 10,0 12,5 16,0 20,0800 2,4 4,0 5,6 8,0 10,0 11,0 12,5 16,0 20,0 25,01)Lacquered conductors of windings are considered to be bare conductors but CREEPAGE DISTANCES are not required to belarger than the associated CLEARANCE specified in Table 20.2.2)Material group III i
39、ncludes IIIa and IIIb. Material group IIIb is not permitted for application above 630 V or forapplication in POLLUTION DEGREE 4.101)In a voltage range of 51 300 V the spacings for an OPERATIONAL INSULATION in a Type 1 control of the in-line cord,free-standing or INDEPENDENTLY mounted type with a 2 0
40、00 VA inclusive load can be reduced to 1/16 inch (1,6 mm)creepage and CLEARANCE and 1/4 inch (6,4 mm) between any energized parts and the enclosure including fittings if allparts are subjected to a 100% production dielectric test potential as specified in 13.2.1DV.1.1 for 1 min or a 20% highervoltag
41、e for 1 s instead.21.101DV D2 Modification of 21.101 of the part 2 by adding the following:An actuator on a TV-TIMER made of an insulating material need not comply with therequirement in 21.101 if:a) The area occupied by the actuator, where it passes through the plain of theenclosure plus the area o
42、f all other openings in the enclosure does not exceed0,05 in2(32 mm2), andb) The actuator complies with the requirement in Annex D, FV-0 Flammability.H.26.2.1DV D2 Modification of H.26.2.1 of the UL part 1 by adding the following:For Type 1 devices, the tests of H.26.8 and H.26.9 are not applicable
43、in the U.S.JULY 24, 2014 NATIONAL DIFFERENCES FOR UL UL 60730-2-7 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDVA.1.9 D2 Addition to the UL Part 1:If a marking draws attention of the USER to a hole of any size in the enclosure for anadjus
44、tment, it shall not be possible to damage insulation or film-coated wire, or contactuninsulated LIVE PARTS through the hole with a 1/16 in diameter (1,6 mm) rod.DVE.1.8 D2 Addition to the UL Part 1:If the integral blades of a plug-in switch are:a) Not polarized, the RECEPTACLE(S) provided as part of
45、 the plug-in switch shall beof the nonpolarized type,b) Polarized, the RECEPTACLE(S) provided shall be of the polarized type, orc) Of the grounding type, the RECEPTACLE(S) provided shall be of the groundingtype.DVE.1.9 D2 Addition to the UL part 1:If the power supply cord of a cord-connected switch
46、has:a) A polarized attachment plug, the RECEPTACLE(S) provided as part of the plug-inswitch shall be of the polarized type,b) A nonpolarized attachment plug, the RECEPTACLE(S) provided shall benonpolarized, orc) A grounding type attachment plug, the RECEPTACLE(S) shall be of the groundingtype.JULY 24, 2014NATIONAL DIFFERENCES FOR UL UL 60730-2-710
