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1、Subject 60745-1 12 Laboratory Drive Research Triangle Park, NC 27709 October 14, 2004 TO: Standards Technical Panel (STP) for Tools, STP 745 Subscribers to ULs Standards Service for Portable Electric Tools Hand-Held Motor-Operated Electric Tools Other Interested Parties SUBJECT: Request for Comments
2、 on Proposed Requirements for the Third Edition of the Standard for Hand-Held Motor-Operated Electric Tools - Safety - Part 1 : General Requirements, UL 60745-1 ; PROPOSED EFFECTIVE DATES INSTRUCTIONS STP Members: If you are a voting member of the STP, complete the attached ballot with your vote on
3、the proposals. Please note that all negative ballots must be accompanied by supporting written reasons and, where possible, proposals for a solution to the problem raised. Impact statements and effective date information are not subject to letter ballot. Therefore, comments regarding impact statemen
4、ts and effective dates may be made and should be sent to the STP Project Manager separate from the letter ballot. Subscribers and other interested parties: If you are a subscriber or other interested party, you are requested to send comments on the proposed requirements, impact statements, and propo
5、sed effective date to the STP Project Manager. The STP member ballot should not be used to submit your comments. Comments should be made in writing and may be sent by fax to (919) 547-6192 or by mail to the attention of Neil Dalmas at ULs Research Triangle Park office, 12 Laboratory Drive, Research
6、Triangle Park, NC 27709. Comments may also be sent via E-mail to Neil.S.D. Please reference all correspondence to Subject 60745-1. Note all comments received are public and may be circulated to others. If you respond by fax or E-mail, please include your full name and company name and address to ens
7、ure a reply. SUMMARY OF TOPICS This bulletin proposes the following changes in requirements: 1. Adding Reference for Switches to Reflect Current Requirements 2. Clarification for Type Y Attachment Definition 3. Clarification for Number of Testing Samples Copyright Underwriters Laboratories Inc. Prov
8、ided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 60745-1 -2- OCTOBER 14,2004 4. Instruction Manual Revisions 5. Changes to Impact and Electric Strength Tes
9、ting for Handle and Grasping Surfaces 6. Changes to Thickness of Quick-Connect Tabs 7. Correction to Creepage Distances and Clearances 8. Clarification for Electric Strength Test STP BALLOTS AND ALL COMMENTS DUE: November 19,2004 Attached as Appendix A for your review and comment are proposed requir
10、ements for UL 60745-1. Attached as Appendix B for your review and comment are the impact statements and proposed effective date. Attached as Appendix C and D is the STP ballot. Questions regarding interpretation of requirements should be directed to the responsible UL Staff. Please note that propose
11、d requirements are of a tentative and early nature and are for review and comment only. Current requirements are to be used to judge a product until these requirements are published in final form. PRODUCTSANDINDUSTRIESAFFECTED BYTHE PROPOSAL UL requests your assistance in identifying other products
12、or industries that might be affected by the requirements contained in this bulletin. UL suggests that all suppliers or customers for these products and industries be made aware of these requirements prior to their proposed effective date. Also, please forward your suggestions to UL so that these pro
13、ducts and industries may be identified in future bu I let ins. Unless specifically requested to do so, UL will not acknowledge comments indicating concurrence with these proposals. UNDERWRITERS LABORATORIES INC. REVIEWED BY: NEIL DALMAS JOE MUSS0 Project Manager for STP 745 Project Engineer Global S
14、tandards Department Standards Department RESEARCH TRIANGLE PARK OFFICE Phone: (91 9) 549-1 879 Fax: (919) 547-6192 E-mail: Joseph.R.M E-mail: Neil.S.D http:/ Chair for STP 745 NORTH BROOK OFF ICE Phone: (847) 664-2964 Fax: (847) 313-2964 Copyright O 2004 Underwriters Laboratories Inc. SR: SAB bul-60
15、745-1.320040901 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 60745-1 -Al- OCTOBER 14,2004 APPENDIX A PROPO
16、SED REQUIREMENTS FOR THE THIRD EDITION OF THE STANDARD FOR HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS, UL 60745-1 For your convenience in review, proposed additions to existing requirements are shown underlined and proposed deletions are shown +me p w f w - m the tests of clauses 23 to 27 and of clause
17、 29 mav be made on seoarate samoles. , . , . , Additional samoles mav be reauired. for examole if the tool is desiuned for different suoolv voltaues. or if jhe test o f 12.6 has to be made: in this case. t hree sa moles of the motor are needed . The test ina of comoonents mav necess itate the submis
18、sion of additional samoles of these CO moonents. The cumulative stress resulting from successive tests on electronic circuits is to be avoided. it may be necessary to replace components or to use additional samples. The number of additional samples should be kept to a minimum by an evaluation of the
19、 relevant electronic circuits. 4. INSTRUCTION MANUAL REVISIONS RATIONALE UL proposes to delete ”and understand” in 8.1 DV. The term ”and understand” does not enhance the intent of the requirement and it is therefore proposed to be deleted. UL proposes to delete 8.12.1DV. The current marking requirem
20、ent in 8.12.1DV is already located in 8.1DV and does not need to also be located in 8.12.1DV. PROPOSALS 8.1DV DI Modification: Add the following items: - the following statement: WARNING - To reduce the risk of injury, user must read instruction manual The word Warning” shall be in capital letters n
21、ot less than 2.4 mm high and shall not be separated from the cautionary statement. The statement shall be verbatim, except the term ” operators manual” or ”user guide” may be used for the term ”instruction manual.” - date of manufacture The date of manufacture may be a dating period not exceeding an
22、y one month. The date of manufacture may be abbreviated or in an established, accepted code or a code affirmed by the manufacturer. The code shall not require reference to the manufacturers records to determine when the product was manufactured. (DELETED) Copyright Underwriters Laboratories Inc. Pro
23、vided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 60745-1 -A3- OCTOBER 14,2004 5. CHANGES TO IMPACT AND ELECTRIC STRENGTH TESTING FOR HANDLE AND GRASPING S
24、URFACES RATIONALE UL proposes to replace the national difference in 20.4DV.1 with text from the upcoming fourth edition of IEC 60745-1, which more clearly defines the time when the potential is applied and the compliance criteria, which will better ensure consistency and repeatability. UL proposes t
25、o replace the tests in K.20.4DV.1 and L.20.4DV.1 for battery tools. Battery tools should be subjected to the same test voltage as cord-connected tools since the potential hazard being addressed is the same for both tools. PROPOSALS 20.4DV.1 D2 Addition: Add the following clause: At the discretion of
26、 the manufacturer. a seDa rate sa mde. is to be subjected to a s inale imDact o n each handle and eac h recommended a ramina surface. The imDacts a re carried out from a heiaht of 1 m ontq a concrete surface followed bv an electric strenath test accordina to Clause 15 usina 1 250 V a.c. between the
27、arasDina surfaces in contact with foil and the outDut shaft of the tool. K.20.4DV.1 D2 Addition: Add the following clause: The test of subclause 20.4 is to be conducted with the batterv installed. L.20.4DV.1 D2 Addition: Add the following clause: Copyright Underwriters Laboratories Inc. Provided by
28、IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 60745-1 -A4- OCTOBER 14,2004 The test of subclause 20.4 is to be conducted with the batterv installed. 6. CHANGES
29、TO THICKNESS OF QUICK-CONNECT TABS RATIONALE UL proposes a change to the thickness of quick-connect tabs in 26.2DV. The proposal reflects current North American tool industry practice. PROPOSAL 26.2DV DI Modification: Add the following paragraphs: Quick-connect terminals may be used to terminate or
30、interconnect grounding and bonding conductors in sizes 18 - 14 AWG under the following conditions: a) For wire sizes 18 - 16 AWG, the minimum connector and tab width shall be 2.80 mm (0.110 inch); or b) For wire sizes 14 AWG, the minimum connector and tab width shall be 6.35 mm (0.250 inch). Quick-c
31、onnect tabs shall not be less than 88 mm (I432 0.02Q inch) thick. Multipin (friction type) insulated connectors shall not be used in equipment grounding paths unless they are shown to be acceptable for grounding use. 7. CORRECTION TO CREEPAGE DISTANCES AND CLEARANCES RATIONALE UL proposes to add a n
32、ational difference in Table IODV, which replaces Row 4 as well as Row 3 in Table IO. This proposal corrects creepage distances and clearances to reflect intended values. This proposal has also been included in the upcoming fourth edition of IEC 60745-1. PROPOSAL Table 10DV DI Modification: Replace R
33、ow 3 and 4 in Table 10 as follows: Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 60745-1 -A5- OCTOBER 14,20
34、04 Between live parts and other metal parts over reinforced insulation: windings - if the live parts are lacquered or enamelled - for other live parts Between metal parts separated by sumlementarv insulation Table 10DV - Minimum creepage distances and clearances (in millimetres) - - - 5,o 5,O 6,O 6,
35、O - - - - 8,O 5,O 8,O 8,O - - - 2-5 u= - - - - RATIONALE UL proposes adding a national difference to K.15.1. The national difference, K.15.1DV, would require additional compliance criteria that clearly indicates that in order to be able to perform the test, accessible parts of insulated material wil
36、l need to be covered with metal foil. This clarifies the compliance criteria to ensure consistent application. PROPOSAL K.15.1 DV DI Modification: Add the followina sentences: Accessible Darts of insulated material are covered with metal foil. No flashover or breakdown shall occur durina the test. C
37、opyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 60745-1 Paragraphs, Tables, Figures, or Section Number 2DV.14
38、3.3.4DV. 1 5.2 8.1DV -BI- Impact No review of currently Listed products will be necessary as this proposal reflects current practice No review of currently Listed products will be necessary as this proposal reflects current practice No review of currently Listed products will be necessary as this pr
39、oposal clarifies when to supply additional samples for testing No review of currently Listed products will be necessary as this proposal reflects current OCTOBER 14,2004 the dielectric test will now be conducted from the shaft to recommended grasping surfaces, and the impact test has been modified t
40、o increase the number of drops. No review of currently Listed products will be necessary as this proposal reflects current APPENDIX B IMPACT STATEMENTS AND PROPOSED EFFECTIVE DATES products will be necessary as this proposal reflects current practice Yes, a review of currently Listed products will b
41、e necessary, as the dielectric test will now be conducted from the shaft to recommended grasping surfaces, and the impact test has been modified to increase the number of drops. I practice I No review of currently Listed 8.12.1DV 20.4DV. 1 26.2DV I practice IYes. a review of currentlv Listed Table 1
42、0DV K. 15.1 DV K.20.4DV. 1 Proposed Effective Date See below. Table Continued on Next Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without l
43、icense from IHS -,-,- SUBJECT 60745-1 -B2- OCTOBER 14,2004 Table Continued Paragraphs, Tables, Figures, r Section Number L.20.4DV. 1 Impact Yes, a review of currently Listed products will be necessary, as the dielectric test will now be conducted from the shaft to recommended grasping surfaces, and
44、the impact test has been modified to increase the number of drops. Proposed Effective Date Proposed Effective Date The previously established future effective date for the Third Edition of UL 60745-1 will also apply to the proposed requirements in this bulletin. However, please note that the origina
45、l effective date of June 1, 2007 has been extended to June 1, 2010. As of June 1, 2010, all products Listed or Recognized by UL must comply with the requirements in this Standard. Between March 26, 2004 and June 1, 2010, new product submittals to UL must be evaluated under all requirements in this S
46、tandard or, if requested in writing, evaluated under presently effective requirements only. The presently effective requirements are contained in the first edition of UL 745-1. Alternate constructions, currently Listed to the UL 45, eighth edition, may be evaluated to the first edition of UL 745-1 a
47、s referenced in the June 7, 2002 bulletin. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 10:10:33 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 60745-1 -CI- OCTOB
48、ER 14,2004 APPENDIX C STP BALLOT FOR UL 60745-1 (FOR STP MEMBERS ONLY) STP Ballot Instructions The STP member should fill out the attached ballot and send it to the STP secretary by the stated deadline. The guidelines for membership on an STP are such that only one individual may represent an organization. Therefore, only the STP member shall return the accompanied ballot. STP members who have indicated that they represent the general interest group comprise a category of independent con