1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 745-2-12Particular Requirements for Concrete VibratorsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational
2、Differences ForUL 745-2-12Particular Requirements for Concrete VibratorsEdition: 2Edition Date: December 7, 2007This new Second edition was issued to clarify the UL effective date statement shown on thePreface page and to make other administrative changes.The Second edition also includes the additio
3、n of a national difference for Clause 23.101 torequire that the supply cord length be not greater than 0.5 m for constructions where the motorand the primary supply switch is located in a separate motor unitAs noted in the Commitment for Amendments statement located on the back side of the titlepage
4、, UL and CSA are committed to updating this IEC-based binational standard jointly.However, this Second edition dated December 7, 2007 will not be issued by CSA since CSAC22.2 No. 745-2-12 is no longer being maintained.This document provides a single listing of the National Differences included in th
5、e UL adoption ofthe corresponding IEC standard. Editorial differences appearing in the UL standard are notincluded in this technical compilation. The complete listing of National Differences is available inthe UL standard.The master for this standards document at ULs Northbrook Office is the officia
6、l standards documentinsofar as it relates to a UL service and the compliance of a product with respect to the requirements forthat product and service, or if there are questions regarding the accuracy of this document.ULs standards documents are copyrighted by UL. Neither a printed copy of a standar
7、ds document, northe electronic file for a standards document should be altered in any way. All of ULs standards documentsand all copyrights, ownerships, and rights regarding those standards documents shall remain the sole andexclusive property of UL.All rights reserved. No part of this standards doc
8、ument may be reproduced, stored in a retrieval system,or transmitted 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,including but
9、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 theinabi
10、lity 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.DECEMBER 7, 2007NATIONAL DIF
11、FERENCES FOR UL UL 745-2-122UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL reserves the right to change the format, presentation, file types and formats, delivery methods andformats, and the like of both its printed and electronic Standard
12、s documents without prior notice.Purchasers of the electronic versions of ULs standards documents agree to defend, indemnify, and holdUL harmless from and against any loss, expense, liability, damage, claim, or judgement (includingreasonable attorneys fees) resulting from any error or deviation intr
13、oduced while purchaser is storing anelectronic standards document on the purchasers computer system.If a single-user version electronic standards document was purchased, one copy of this standardsdocument may be stored on the hard disk of a single personal computer, or on a single LAN file-serveror
14、the permanent storage device of a multiple-user computer, or made available through the purchasersIntranet in such a manner that this standards document may only be accessed by one user at a time andfor which there is no possibility of multiple simultaneous, concurrent access.If a multiple-user vers
15、ion electronic standards document was purchased, one copy of the standardsdocument may be stored on a single LAN file-server, or on the permanent storage device of amultiple-user computer, or made available through the purchasers Intranet. The number of simultaneous,concurrent users shall not exceed
16、 the number of users authorized.Electronic standards documents are intended for on-line use, such as for viewing the requirements of astandards document, conducting a word search, and the like. Only one copy of the standards documentmay be printed from each single-user version of an electronic stand
17、ards document. Only one copy of thestandards document may be printed for each authorized user of a multiple-user version of an electronicstandards document. Because of differences in the computer/software/printer setup used by UL and thoseof electronic standards document purchasers, the printed copy
18、 obtained by a purchaser may not lookexactly like the on-line screen view or the printed standards document.An employee of an organization purchasing a UL standards document can make a copy of the page orpages being viewed for their own fair and/or practical internal use.Copyright 2007 Underwriters
19、Laboratories Inc.DECEMBER 7, 2007 NATIONAL DIFFERENCES FOR UL UL 745-2-12 3UL 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 c
20、orresponding IEC standard. Editorial national differences (those marked DE) are not included inthis technical compilation.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 n
21、ot use all types of thesedeviations.DR - These are deviations based on the National Electrical Code (NEC) and other U.S. RegulatoryRequirements.D1 - These are deviations which are based on basic safety principles and requirements, elimination ofwhich would compromise safety for U.S. consumers and us
22、ers 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 are deviations based on the component standards
23、 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 correctionsDECEMBER 7, 2007NATIONAL DIFFERENCES FOR UL UL 745-2-124UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDI
24、STRIBUTION WITHOUT PERMISSION FROM ULNational Differences23.101DV DR Modification: Replace the first paragraph of Clause 23.101 of the Part 2:The supply cable of a concrete vibrator of the type that comprises a motor unit and themains switch shall have a length not greater than 0.5 m. The supply cab
25、le of a concretevibrator of the type to which the in-line switch or an in-line handle with integral switch isconnected to the flexible hose containing the interconnecting cable shall have a length ofat least 5 m.DECEMBER 7, 2007 NATIONAL DIFFERENCES FOR UL UL 745-2-12 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDECEMBER 7, 2007NATIONAL DIFFERENCES FOR UL UL 745-2-126No Text on This Page
