CEA-636-1996.pdf
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1、 CEA Standard Recommended Loudspeaker Safety Practices ANSI/CEA-636 December 1996 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:41:16 MDTNo reproduction or networking permitted with
2、out license from IHS -,-,- NOTICE CEA Standards, Bulletins and other technical publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser i
3、n selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards, Bulletins and other technical publications shall not in any respect preclude any member or nonmember of CEA from manufacturing or selling products not conforming to such Standards, B
4、ulletins or other technical publications, nor shall the existence of such Standards, Bulletins and other technical publications preclude their voluntary use by those other than CEA members, whether the standard is to be used either domestically or internationally. Standards, Bulletins and other tech
5、nical publications are adopted by CEA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, CEA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard, Bulletin or other technical pub
6、lication. This CEA Standard is considered to have International Standardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the CEA Standard and the IEC document can be made. This Standard does not purport t
7、o address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Project Numbe
8、r 3406, formulated under the cognizance of the CEA R1 Safety General Purpose Use, Fire Protective Signaling Systems, and Installation in Air-Handling Plenum Spaces.40 i Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Ber
9、nie Not for Resale, 03/30/2007 20:41:16 MDTNo reproduction or networking permitted without license from IHS -,-,- This page left blank. Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20
10、:41:16 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-636 INTRODUCTION This document, “Recommended Loudspeaker Safety Practices“, is only intended to provide a guide to manufacturers wishing to test their products for the existence of specific potential hazards. Accord
11、ingly, this document cannot be used as the ultimate standard for loudspeaker safety. The guidelines in this document consist of loudspeaker specifications and tests that relate to specific safety issues, only. They should be used in conjunction with the manufacturers own safety specifications and te
12、sting program or may form the basis of a safety specifications and testing program if none is actively in place. In addition to the guidelines themselves, this document contains background information on loudspeaker safety. For example, the reasons for some of the test conditions are given. Loudspea
13、ker performance is not covered in this document since this is covered in EIA-426, the international standard IEC-268-5, and other documents. The general approach used in this document is a systems approach. That is, that the function of the entire system is the primary concern rather than the hazard
14、 potential of individual components or materials. However, some specifications and testing recommendations for individual components are included as a matter of course, as they relate to safety and quality control issues. Many tests given in this document may be inherently hazardous and thus adequat
15、e safeguards for testing personnel and property should be employed while conducting such tests. _ The first draft of this document was written hi the EIA/CEG/R-1 Product Safety Committee in 1987. This second draft was revised and expanded by the combined efforts of the EIA/CEG/R-1 Product Safety Com
16、mittee and the National Sound it cannot be used to replace these sections. For flammability of materials covered in Sections 5 through 10, you will note there are different paths (tests) for different kinds of materials and parts. In the instances where there are optional paths (tests), the document
17、 user can choose the most economical or appropriate test for this application. 2 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:41:16 MDTNo reproduction or networking permitted witho
18、ut license from IHS -,-,- CEA-636 In using this document as a guide for determining the potential hazard of loudspeaker products, please note that all sections are interrelated and thus the whole document should be used in concert. For example: Section 1.3 indicates that goods in shipment are expose
19、d to temperatures between +65C (.50F) and -30 C (-22F) and relative humidity as high as 95%. These extremes should be considered when choosing materials that are given the flammability tests described in Section 5. 3 Copyright Consumer Electronics Association Provided by IHS under license with CEA L
20、icensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:41:16 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-636 4 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing,
21、Bernie Not for Resale, 03/30/2007 20:41:16 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-636 1.6 Detailed Revised FlowChart of Section 5 Thru 10 5 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User
22、=Wing, Bernie Not for Resale, 03/30/2007 20:41:16 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-636 2 Scope This document applies to any loudspeaker assembly and loudspeaker system that is: a) Designed to produce acoustic energy for any communications and entertainmen
23、t purpose through the mechanism of an electrically energized, moveable coil interposed in a permanent magnetic field. The acoustic energy is radiated into an air medium, indoors or outdoors. b) A device which does not have additional manufacturing operations performed on it before it reaches the end
24、 user. c) For home entertainment use or for commercial use. d) For use within or for connection to equipment containing an electronic power amplifier. See Par. Tests described within this document are to be performed on products which have the same physical properties of materials and the same mecha
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