IEEE Std 1584a-2004 IEEE Guide for Performing Arc-Flash Hazard Calculations - Amendment 1.pdf
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1、IEEE Std 1584a-2004 (Amendment to IEEE Std 1584-2002) IEEE Standards 1584a TM IEEE Guide for Performing Arc-Flash Hazard CalculationsAmendment 1 3 Park Avenue, New York, NY 10016-5997, USA IEEE Industry Applications Society Sponsored by the Petroleum and Chemical Industry Committee IEEE Standards 29
2、 November 2004 Print: SH95280 PDF: SS95280 Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 16:50:59 UTC from IEEE Xplore. Restrictions apply. The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 200
3、4 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 29 November 2004. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educational cl
4、assroom use can also be obtained through the Copyright Clearance Center. NOTEAttention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the exist- ence o
5、r validity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying patents for which a license may be required by an IEEE standard or for conducting inquiries into the legal valid- ity or scope of those patents that are brought to its attention. Authorized lic
6、ensed use limited to: Peking University. Downloaded on December 26,2010 at 16:50:59 UTC from IEEE Xplore. Restrictions apply. Copyright 2004 IEEE. All rights reserved.iii Introduction This amendment to IEEE Std 1584-2002 offers guidelines on how to apply the document based on experi- ence gained by
7、users since its publication. As defined by the IEEE operating procedures, a guide is a document in which alternative approaches to good practice are suggested, but no clear-cut recommendations are made. This guide is intended to be used only by qualified people. The complexities of electrical power
8、system configurations and equipment dictate that, like short-circuit studies and protective-device coordination studies, an arc-flash hazard study should only be undertaken by experienced electrical power system engineers or other well-trained professionals. Those who are not this qualified are enco
9、uraged to use a table method to select personal protective equipment (PPE). A set of cautions and disclaimers is provided in the guide and reproduced in the spreadsheet calculator to help users understand the limitations in the technology. Proper PPE based on arc-flash hazard calculations or tables
10、is the last line of defense against arc-flash hazards. Other mitigation techniques, as in the following list, provide a much better defense. A facility owner and employees working on equipment should be aware of all the limitations. The warning labels in rated PPE help to do this. However, users sho
11、uld recognize that following codes, standards, guides, and recommended practices does not guarantee that all arc-flash injuries will be avoided. De-energizing remains the first choice as a means of achieving an electrically safe working condition and reducing the possibility of injury, but that is n
12、ot always possible. Also, incidents have occurred during the action of de-energizing equipment to create the safe working condition and during switching to reestablish power. For these occasions, an arc-flash hazard analysis and the institution of a PPE program provide great value in reducing the li
13、kelihood of injuries in an arc flash. These studies may identify equipment where the possible incident energy levels are so high that PPE is not available or not recommended. In those cases, operating procedure or engineering design changes may need to be considered to reduce the exposure or inciden
14、t energy levels. Developing these changes is an important part of implementing a studys results. Examples of some of these changes include the following: Changing operating procedures to eliminate or minimize the time that two sources of power are tied together Resetting or replacing existing protec
15、tive devices to get faster fault clearing times Adding fast operating relays or current-limiting devices to reduce fault clearing times Adding remote racking and operating capability Installing arc-resistant switchgear Notice to users Errata Errata, if any, for this and all other standards can be ac
16、cessed at the following URL: http:/ standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. (This introduction is not part of IEEE Std 1584a-2004, IEEE Guide for Performing Arc-Flash Hazard Calculations Amendment 1.) Authorized licen
17、sed use limited to: Peking University. Downloaded on December 26,2010 at 16:50:59 UTC from IEEE Xplore. Restrictions apply. ivCopyright 2004 IEEE. All rights reserved. Interpretations Current interpretations can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/interp/ index.ht
18、ml. Patents Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. The IEEE s
19、hall not be responsible for identifying patents or patent applications for which a license may be required to implement an IEEE standard or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. Participants When the IEEE 1584 Working Group appr
20、oved this amendment, it had the following membership: Craig M. Wellman, Chair L. Bruce McClung, Vice Chair Daleep C. Mohla, Secretary The following members of the individual balloting committee voted on this amendment. Balloters may have voted for approval, disapproval, or abstention. Donald Bauman
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