1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForElectric Motor-Operated Hand-Held Tools, Transportable Tools And Lawn And Garden Machinery Safety Part 2-2: Particular Requirements For Hand-Held Screwdrivers And Impact W
2、renchesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForElectric Motor-Operated Hand-Held Tools, Transportable Tools And Lawn And Garden Machinery Safety Part 2-2: Particular Requirements For Hand-Held Screwdrivers And I
3、mpact WrenchesFirst EditionEdition Date: February 26, 2016The revisions dated July 28, 2017 incorporates changes to Table 4, Required PerformanceLevels, to align with changes to IEC 62841-2-2 in IEC Corrigendum 1 of IEC 62841-2-2.Please note that the national difference document incorporates all of
4、the U.S. nationaldifferences for UL 60745-2-2. This standard is an adoption of IEC UL 62841-2-2, Edition 1published by the IEC, May 2014.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 th
5、is publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, 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,inclu
6、ding but not limited to, the implied warranties of merchantability or fitness for any purpose.In no event will 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
7、 theinability to use this standards document, even if UL or an authorized UL representative has been advisedof 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 electr
8、onic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard o
9、n the purchasers computer system.Copyright 2017 Underwriters Laboratories Inc.JULY 28, 2017NATIONAL DIFFERENCES FOR2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National Differ
10、ences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, 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 devi
11、ations which are based on basic safety principles and requirements, elimination ofwhich would 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 requirem
12、ents would require considerable retesting or redesign on themanufacturers part.DC - These are 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 o
13、r corrections.DR - These are deviations based on the national regulatory requirements.Each national 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 I
14、ECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause, 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,figu
15、re, or annex without any replacement text.Modification / Modify - A modification is an altering of the existing base IEC text such as the addition,replacement or deletion of certain words or the replacement of an entire clause, subclause, table, figure,or annex of the base IEC text.JULY 28, 2017 NAT
16、IONAL DIFFERENCES FOR 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences1DV D1 Modification: Replace the second paragraph of Clause 1 of the Part 2 with thefollowing:This standard applies to screwdrivers, impact wrenches, an
17、d ratchet drivers.3.103DV D1 Addition: Add the following definition to Clause 3 of the Part 2:ratchet driver: tool intended for tightening and loosening screws, nuts, and the like andequipped with a ratcheting mechanism. Some ratchet drivers are equipped with a meansfor switching the direction of ro
18、tation12.2.1DV D1 Modification: Replace the second paragraph of Clause 12.2.1 of the Part 2with the following:The impact or ratchet mechanism may be disabled during the test to prevent damage to thebrake.12.5DV D1 Modification: Add the following to Clause 12.5 of the Part 1:The temperature-rise limi
19、t specified for the external enclosure does not apply to theenclosure of the ratchet head and reversing control of ratchet drivers.17.2DV.1 D1 Modification: Replace the second paragraph of Clause 17.2 of the Part 2with the following:For impact wrenches and ratchet drivers, replace the test of part 1
20、 as follows:17.2DV.2 D1 Modification: Replace the third paragraph of Clause 17.2 of the Part 2 withthe following:An impact wrench or ratchet driver shall be operated with no-load for 12 h at a voltageequal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltagerange
21、and then for 12 h at a supply voltage equal to 0,9 times the lower limit of the ratedvoltage range. The 12 h of operation need not be continuous. If applicable, the tool shallbe adjusted to the maximum attainable speed.17.2DV.3 D1 Modification: Replace the seventh paragraph of Clause 17.2 of the Par
22、t 2with the following:After this, the impact wrenches and ratchet drivers shall be operated intermittently for 12h at a supply voltage equal to 1,1 times the highest rated voltage or 1,1 times the upperlimit of the rated voltage range, then for 12 h at a supply voltage equal to 0,9 times thelowest r
23、ated voltage or 0,9 times the lower limit of the rated voltage range.JULY 28, 2017NATIONAL DIFFERENCES FOR4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL20.5DV D1 Modification: Replace Clause 20.5 of the Part 2 with the following:This subcla
24、use is not applicable for impact wrenches and ratchet drivers with a squaredrive greater than or equal to 13 mm.21.30DV D1 Modification: Replace Clause 21.30 of the Part 2 with the following:This subclause is not applicable for impact wrenches and ratchet drivers with a squaredrive greater than or e
25、qual to 13 mm.24.4DV D1 Modification: Replace Clause 24.4 of the Part 2 with the following:This subclause of the Part 1 is applicable.K.12.1DV D1 Modification: Add the following to Clause K.12.1 of the Part 1:The temperature-rise limit specified for the external enclosure does not apply to theenclosure of the ratchet head and reversing control of ratchet drivers.JULY 28, 2017 NATIONAL DIFFERENCES FOR 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJULY 28, 2017NATIONAL DIFFERENCES FOR6No Text on This Page
