1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1678 Household, Commercial, and Institutional-Use Carts, Stands and Entertainment Centers for Use with Audio and/or Video EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC
2、TION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Household, Commercial, and Institutional-Use Carts, Stands and Entertainment Centers for Use with Audio and/or Video Eq
3、uipment, UL 1678 Fifth Edition, Dated August 10, 2012 SUMMARY OF TOPICS This new edition of ANSI/UL 1678 is being issued to incorporate the requirements of the Standard for Tall Institutional Carts for Use with Audio-, Video-, and Television-Type Equipment, UL 1667, and to address at panel video dis
4、play technology. The new/revised requirements are substantially in accordance with Proposal(s) on this subject dated November 18, 2011 and May 18, 2012. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electron
5、ic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be lia
6、ble for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of
7、 such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability,
8、 damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables,
9、gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS
10、notice. The following table lists the future effective dates with the corresponding reference. AUGUST 10, 2012 UL 1678 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Future Effective Date Reference January 31, 2014 Entire Standard AUGUST
11、 10, 2012 UL 1678 tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 10, 2012 1 UL 1678 Standard for Household, Commercial, and Institutional-Use Carts, Stands and Entertainment Centers for Use with Audio and/or Video Equipment The Fi
12、rst, Second, and Third Editions were titled Standard for Household, Commercial, and Professional-Use Carts and Stands. The Fourth Edition was titled Standard for Household, Commercial, and Professional-Use Carts and Stands for Use with Audio/Video Equipment. Prior to the Fifth Edition of UL 1678, th
13、e requirements for Tall Institutional Carts were included in the Standard for Tall Institutional Carts for Use with Audio-, Video-, and Television-Type Equipment, UL 1667. First Edition February, 1991 Second Edition December, 1996 Third Edition July, 1998 Fourth Edition December, 2001 Fifth Edition
14、August 10, 2012 The most recent designation of ANSI/UL 1678 as an American National Standard (ANSI) occurred on August 10, 2012. The ANSI approval for this standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. This ANSI/UL Standard for Safety consist
15、s of the Fifth Edition. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL.
16、 Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2012 UNDERWRITERS LABORATORIES INC. ANSI/UL 1678-2012UL COPYRIGHT
17、ED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 10, 2012 UL 1678 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Glossary .6 3 Com
18、ponents 8 4 Units of Measurement .8 5 References .9 CONSTRUCTION 6 General 9 7 Corrosion Protection .9 8 Sharp Edges .9 9 Securement of Supported Equipment 9 9.1 General-use carts 9 9.2 Tall institutional carts 10 10 Ventilation .10 11 Materials .10 12 User Assembly .11 13 Wheels, Rollers and Caster
19、s .11 PERFORMANCE 14 General 11 15 Temperature Stability Test .12 16 Tip Stability Test 12 16.1 General .12 16.2 Carts or stands intended to support or store audio and/or video equipment other than a television or having other general storage 13 16.3 Carts, stands and entertainment centers having a
20、support surface or mounting surface for a television 14 16.4 Dynamic tip stability test for tall institutional carts and stands 20 16.5 Force stability test 21 16.6 Appurtenance stability test 24 17 Loading Tests .26 18 Handle Strength Test 26 19 Appurtenance Strength Test .27 20 Glass Parts Impact
21、Test .27 21 Wheel, Roller, or Caster Securement Test .28 22 Braking Test .30 23 Adhesives Test .30 MARKINGS 24 General 31 25 Use and Care Instructions .34 AUGUST 10, 2012 UL 1678 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX A St
22、andards for ComponentsA1 APPENDIX B TEST FIXTURE DETAILS (Refer to Figures 16.1 and 16.2) APPENDIX C HISTORICAL CRT TELEVISION TEST FIXTURE WEIGHT AND STABILITY PARAMETERS AUGUST 10, 2012 UL 1678 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM
23、 UL INTRODUCTION 1 Scope Section 1 effective January 31, 2014 1.1 These requirements apply to household, commercial, and institutional-use carts, stands and entertainment centers intended to provide a surface for the support or attachment of audio and/or video equipment. 1.2 These requirements also
24、apply to tall institutional-use carts and stands intended to provide a surface for the support of audio and/or video equipment that have a support bracket or shelf that is more than 39.4 inches (1 m) above the oor and are intended for use in schools, institutions, hospitals or similar locations wher
25、e children or persons with diminished capacity are likely to move them or may be asked to move them. 1.3 A furnishing intended to support audio and/or video equipment shall be evaluated in accordance with one of the following: a) If the audio and/or video support system is an entertainment center or
26、 a stand with or without casters or wheels, this standard applies; b) If the audio and/or video support system is intended to be mounted to walls, ceilings or another part of a building structure, the Standard for Wall and Ceiling Mounts and Accessories, UL 2442, applies; c) If a cart, stand or supp
27、ort surface is supplied with the audio or video equipment by the manufacturer of the audio or video equipment, the requirements contained in the audio or video component standard apply. The Standard for Audio, Video and Similar Electronic Apparatus, UL 60065, or the Standard for Information Technolo
28、gy Equipment Safety, UL 60950-1, as applicable to the product, applies. d) Information Technology and Communications Equipment Cabinets, Enclosure and Rack Systems are investigated to the Standard for Information Technology Equipment Safety Part 1, UL 60950-1 or Audio/Video, Information and Communic
29、ation Technology Equipment Part 1: Safety Requirements, UL 62368-1. 1.4 These requirements do not apply to any electrical circuitry integral to or provided with a cart, stand or entertainment center. AUGUST 10, 2012 UL 1678 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBU
30、TION WITHOUT PERMISSION FROM UL 2 Glossary Section 2 effective January 31, 2014 2.1 For the purposes of this standard, the following denitions apply. 2.2 ACCESSORY An optional part that interfaces with the basic cart, stand or entertainment center and is intended to be attached by the user or instal
31、ler. Subassemblies eld assembled to form the basic cart, stand or entertainment center are not accessories. 2.3 APPURTENANCE Objects on a cart, stand or entertainment center such as a door, drawer, or a sliding work surface. 2.4 CART A stand provided with casters, wheels, or rollers intended to make
32、 it easily mobile. 2.5 CRT Cathode Ray Tube. A vacuum tube containing an electron gun used to create images on the screen. 2.6 DEDICATED STORAGE AREA An area of a cart, stand or entertainment center intended to accommodate specic articles such as storage media: tapes, CDs, DVDs, and ash drives. 2.7
33、DESIGNATED LOAD The maximum weight specied by the manufacturer that the cart, stand or entertainment center is intended to accommodate. 2.8 ENTERTAINMENT CENTER A furnishing intended to support a television and the associated audio equipment; also provided with doors, drawers or shelves. 2.9 HANDLE
34、A feature that is specically intended to facilitate carrying, transporting, lifting or movement of the total product. Features such as drawer pulls, knobs on drawers or doors, decorative moldings and shelf edges are not considered to be handles. 2.10 INSTITUTIONAL AREAS Include but are not limited t
35、o health care facilities, old age convalescent board and care homes, college dormitories, schools, residence halls, jails, prisons, nursing care homes, public auditoriums, hotels and motels. 2.11 MAXIMUM ANTICIPATED LOAD A test weight that is based on the usable volume of a compartment. 2.12 MOUNTIN
36、G SURFACE A surface that is a part of the cart, stand or entertainment center used for securing a at panel video display (television) to the cart, stand or entertainment center. Flat panel video displays are connected to the mounting system or bracket with hardware and fasteners. Mounting surfaces m
37、ay be xed position or adjustable to various angles and heights. 2.13 NORMAL USE Those operations performed by the user to utilize a fully assembled cart or stand, with or without equipment and accessory loads installed. 2.14 ORDINARY TOOLS Tools which are normally expected to be available to the use
38、r, such as, at-bladed and cross-recessed head (Phillips-type) screwdrivers, hammers, nut drivers, and pliers. 2.15 RACK A type of framework designed to mount or secure audio, video and ITE equipment. 2.16 RESIDENCE (HOUSEHOLD) A place where people live such as a house or apartment. The terms househo
39、ld and residence are equivalent. AUGUST 10, 2012 UL 1678 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.17 SIMULATED TELEVISION LOAD A test xture intended to simulate a video display or television (as used within this Standard, the terms
40、 television, TV, and video display are equivalent). a) Figure 16.1 The xture depicted simulates all technology televisions, monitors or video displays that are free standing and that will rest on a television shelf. b) Figure 16.2 The xture depicted simulates at panel video display television techno
41、logy and is used for testing when the television is intended to be secured to a mounting bracket provided with the cart, stand or entertainment center. 2.18 STAND A structure on or in which audio and/or video equipment and accessories are intended to be placed, contained, or mounted for support. 2.1
42、9 SUPPORTING SURFACE Any surface (shelf, drawer, or similar surface) that is intended to support equipment or an accessory that is used with equipment (records, tapes, digital discs, headphones, and similar products). 2.20 TALL INSTITUTIONAL CART a) A cart where the television or apparatus supportin
43、g surface is more than 39.4 inches (1 m) above the oor and the cart is recommended by the manufacturer to be used in institutional areas where children, or people with diminished capacity are likely to move or may be asked to move the cart; or b) A cart where the television when mounted to the mount
44、ing surface of the cart places the center line of the television surface more than 39.4 inches (1 m) above the oor and the cart is recommended by the manufacturer to be used in institutional areas where children, or people with diminished capacity are likely to move or may be asked to move the cart.
45、 2.21 TELEVISION Cathode Ray Tube (CRT), Monitor or Video Display LED, LCD, OLED, Plasma or similar equipment intended to provide a visible image or information to the user. 2.22 TELEVISION SHELF A horizontal or sloping surface specically identied in the use and care instructions for the placement a
46、nd support of a television. 2.23 USER ASSEMBLY Any mechanical assembly of the cart, stand or entertainment center, performed by the user. 2.24 UTILIZATION EQUIPMENT Equipment that utilizes energy for electronic, electromechanical, heating, lighting or similar purposes. AUGUST 10, 2012 UL 1678 7UL CO
47、PYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Components Section 3 effective January 31, 2014 3.1 Except as indicated in 3.2, a component of a product covered by this standard shall comply with the requirements for that component. 3.2 A compo
48、nent is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 3.3 A component shall be used in accordance with its
49、 rating established for the intended conditions of use. 3.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 3.5 An adhesively applied marking that is required to be permanent shall comply with the Standard
