ITU-T K.64-2011 (待颁布的) 安装在特殊环境的户外设备的安全工作规则 K系列:干涉保护 Safe working practices for outside equipment installed in particular environments Study Group 5

pdf标准 ITU-T K.64-2011 (待颁布的) 安装在特殊环境的户外设备的安全工作规则 K系列:干涉保护 Safe working practices for outside equipment installed in particular environments Study Group 5

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ITU-T K.64-2011 (待颁布的) 安装在特殊环境的户外设备的安全工作规则 K系列:干涉保护 Safe working practices for outside equipment installed in particular environments Study Group 5 第 1 页 ITU-T K.64-2011 (待颁布的) 安装在特殊环境的户外设备的安全工作规则 K系列:干涉保护 Safe working practices for outside equipment installed in particular environments Study Group 5 第 2 页 ITU-T K.64-2011 (待颁布的) 安装在特殊环境的户外设备的安全工作规则 K系列:干涉保护 Safe working practices for outside equipment installed in particular environments Study Group 5 第 3 页 ITU-T K.64-2011 (待颁布的) 安装在特殊环境的户外设备的安全工作规则 K系列:干涉保护 Safe working practices for outside equipment installed in particular environments Study Group 5 第 4 页 ITU-T K.64-2011 (待颁布的) 安装在特殊环境的户外设备的安全工作规则 K系列:干涉保护 Safe working practices for outside equipment installed in particular environments Study Group 5 第 5 页
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I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU U n i o n K.64 (01/2011) SERIES K: PROTECTION AGAINST INTERFERENCE Safe working practices for outside equipment installed in particular environments Recommendation ITU-T K.64 Recommendation ITU-T K.64 Safe working practices for outside equipment installed in particular environments Summary Recommendation ITU-T K.64 describes working practices for service personnel to help them work safely in telecommunication installations in three specific environments. The specific environments covered in this Recommendation are characterized by wet conditions or close proximity to exposed metallic parts. The working practices apply to telecommunication plants with voltage levels higher than the limits defined for analogue PSTN circuits, such as remote feeding telecommunication current or voltage (RFT-C or RFT-V) circuits. This version of Recommendation ITU-T K.64 includes a warning regarding contact with terminals carrying RFT circuits with small parts of the body, e.g., back of the hand. The references have been updated. History Edition Recommendation Approval Study Group 1.0 ITU-T K.64 2004-02-29 5 2.0 ITU-T K.64 2011-01-13 5 Rec. ITU-T K.64 (01/2011) i FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words "shall" or some other obligatory language such as "must" and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http://www.itu.int/ITU-T/ipr/. The ITU-T thanks the International Electrotechnical Commission (IEC) for permission to reproduce information from IEC Technical Report 60479-1. All such extracts are copyright of IEC, Geneva, Switzerland. All rights reserved. Further information on the IEC is available from http://www.iec.ch/. IEC has no responsibility for the placement and context in which the extracts and contents are reproduced by ITU-T, nor is IEC in any way responsible for the other content or accuracy therein.  ITU 2011 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ii Rec. ITU-T K.64 (01/2011) Table of Contents Page 1 Scope ............................................................................................................................ 1 2 References..................................................................................................................... 1 3 Definitions .................................................................................................................... 1 4 Abbreviations....................

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