1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 879 Electric Sign ComponentsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO
2、DUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electric Sign Components, UL 879 Ninth Edition, Dated October 9, 2009 Summary of Topics Revision pages for UL 879 are being issued to reect the reaffirmation of UL 879 as an American National Standard. Text that has been c
3、hanged in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording
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5、quential, 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 such damage. In no event shall ULs li
6、ability 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, damage, claim, or judgment (including
7、 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, gures, and/or other elements of the St
8、andard 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that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JUNE 11, 2014 UL 879 tr1UL COP
9、YRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 11, 2014 UL 879 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL October 9, 2009 (Title Page Reprinted: June 11,
10、 2014) 1 UL 879 Standard for Electric Sign Components The rst through seventh editions were titled Electrode Receptacles for Gas-Tube Signs. First Edition February, 1940 Second Edition January, 1966 Third Edition March, 1971 Fourth Edition August, 1976 Fifth Edition August, 1981 Sixth Edition Februa
11、ry, 1993 Seventh Edition January, 1997 Eighth Edition June, 2005 Ninth Edition October 9, 2009 This ANSI/UL Standard for Safety consists of the Ninth Edition including revisions through June 11, 2014. The most recent designation of ANSI/UL 879 as a Reaffirmed American National Standard (ANS) occurre
12、d on June 11, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. 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
13、ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. 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 r
14、emain the sole and exclusive property of UL. NOTE The users attention is called to the possibility that compliance with this standard may require use of an invention covered by patent rights. By publication of this standard, no position is taken with respect to the validity of this claim or of any p
15、atent rights in connection there with. The patent holder has, however, led a statement of willingness to grant a license under these rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such a license. Details may be obtained from UL. COPYRIGHT 2014 UNDERW
16、RITERS LABORATORIES INC. ANSI/UL 879-2009 (R2014)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 9, 2009 ELECTRIC SIGN COMPONENTS - UL 879 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTR
17、IBUTION WITHOUT PERMISSION FROM UL CONTENTS 1 General 5 1.1 Scope .5 1.2 Component identication requirements 7 1.3 Glossary 8 1.4 Components 14 1.5 Undated references 15 1.6 Units of measurement 15 2 Construction .15 2.1 Enclosure 15 2.2 Insulating barrier 25 2.3 Accessibility barrier 25 2.4 Opening
18、s and open holes 29 2.5 Sign body 32 2.6 Gaskets and bushings .32 2.7 Corrosion protection .32 2.8 Mechanical joints and fastenings 33 2.9 Sharp edges 34 2.10 Supply connections .34 2.11 Equipment grounding and bonding .40 2.12 Current-carrying parts .46 2.13 Insulating materials .55 2.14 Electrical
19、 components .56 2.15 Spacings 62 2.16 Markings 66 3 Tests General .68 3.1 General 68 3.2 Polymeric material evaluation .68 3.3 Inorganic, nonmetallic tests .93 3.4 Product tests .94 4 Specic Components Only for Use in an End Product .122 4.1 General .122 4.2 Electrode receptacles, other than the thr
20、ough wall housing type .127 4.3 Feed type over 1000 V lampholders 132 4.4 Interconnecting over 1000 V lampholders .135 4.5 Electrode receptacle enclosure .139 4.6 Polymeric neon electrode enclosures .142 4.7 Glass cup receptacles 146 4.8 Glass tubing conduit assembly .149 4.9 GTO cable sleeving 152
21、4.10 GTO cable splice enclosure 153 4.11 Sign body, awning and face material-not enclosure rated 157 4.12 Enclosure sign face materials .157 4.13 Sign face tensioning systems .159 4.14 Structural materials 160 4.15 Electrode receptacle insulator .161 4.16 Trim cap .162 4.17 Dimmers, ashers, controll
22、ers and animators .163 4.18 Class 2 LED components 166 4.19 Electroluminescent displays 171 4.20 Switch enclosures .173 4.21 Sign rotating equipment 175 OCTOBER 9, 2009 ELECTRIC SIGN COMPONENTS - UL 879 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSI
23、ON FROM UL 4.22 Clock mechanisms 178 5 Sign Components for Field and Factory Installation .181 5.1 General .181 5.2 Markings 182 5.3 Installation instructions 182 5.4 Through wall electrode receptacles .182 5.5 Receptacle caps .187 5.6 Electrode receptacle grounding means 189 5.7 Cold cathode and ov
24、er 1000-V lampholder systems 190 5.8 Electrode receptacle enclosure .192 5.9 Neon electrode splice and GTO cable polymeric enclosure systems 193 5.10 Glass cup neon electrode receptacle and GTO cable splice enclosure systems .197 5.11 GTO cable splice enclosure 198 5.12 Neon electrode enclosure and
25、GTO cable with integral sleeving enclosure system . .200 5.13 GTO cable assemblies .202 5.14 Neon transformer enclosures .211 5.15 Neon tubing support, cable support and cable bushing 212 5.16 Sign dimmers, ashers, controllers and animating equipment .216 5.17 Lubricant .218 6 Manufacturing and Prod
26、uction Tests 221 6.1 Grounding continuity test 221 6.2 Dielectric voltage-withstand test 222 APPENDIX A Standards for ComponentsA1 APPENDIX B OCTOBER 9, 2009 ELECTRIC SIGN COMPONENTS - UL 879 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL
27、1 General 1.1 Scope 1.1.1 These requirements cover components for use in signs and outline lighting systems intended for installation in accordance with the National Electrical Code, NFPA 70. Components covered by this standard include the types specied in 1.1.2, including electromechanical componen
28、ts that convey a message or outline the structural features of a building by electronically directing or rechanneling available light from other sources and involving all forms of illumination such as: a) Fluorescent lighting, b) High intensity discharge (HID) lighting, c) Neon lighting, d) Cold cat
29、hode lighting, e) Light emitting diodes (LED), and f) Electroluminescent lighting. 1.1.2 Examples of components intended to be covered by this standard include: a) Materials used in signs and outline lighting such as structural panels, sign face materials, switch enclosures, sign frames, electrical
30、enclosures, accessibility barriers, trim caps, water shields, coatings and lubricants, components related to material installation and the like. b) Electrical components relating to illumination circuits operating at 1000 V and above such as electrode receptacles, lampholders, neon electrode enclosu
31、res, GTO sleeving, integrally sleeved GTO cable, GTO cable splice enclosures and insulating devices. c) Electromechanical and electronic equipment for use in signs such as LED units, LED power sources, sign ashers, animating equipment, scrolling units, and sign rotating equipment. 1.1.3 This standar
32、d does not cover components covered by another standard, unless there are additional considerations that need to be addressed when the component is for use in signs and outline lighting. 1.1.4 These requirements do not cover: a) Christmas tree and other decorative lighting devices b) Exit lighting a
33、nd luminaires and low level path marking and lighting systems c) Fluorescent ballasts d) Fluorescent lampholders e) Incandescent luminaires f) GTO cable g) High intensity discharge ballasts OCTOBER 9, 2009 ELECTRIC SIGN COMPONENTS - UL 879 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC
34、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL h) HID lighting luminaires i) Incandescent lampholders j) Incandescent lighting k) Luminaires of any kind l) Low voltage landscape lighting systems m) Low voltage lighting xtures for use in recreational vehicles n) Low voltage marine lighting o) Marine
35、 navigational lights p) Marine type xtures q) Neon transformers and power supplies r) Portable electric displays s) Portable handlamps t) Portable lamps and cabinet lamps u) Portable luminaires v) Portable sun/heat lamps w) Stage and studio luminaires x) Self-ballasted uorescent lamps y) Temporary l
36、ighting strings z) Track lighting xtures OCTOBER 9, 2009 ELECTRIC SIGN COMPONENTS - UL 879 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.2 Component identication requirements 1.2.1 All components shall be evaluated for factory installat
37、ion only as specied in 1.2.2 and 1.2.3 or evaluated for factory and eld installation as specied in 1.2.4 and 1.2.5. 1.2.2 A factory installed component is intended for use only under limited conditions, such as temperatures not exceeding specied limits, and shall be used only under those specic cond
38、itions for which they have been investigated. Components currently identied as intended for factory installation only are identied in Table 1.1. Table 1.1 Factory installed sign components Electrode receptacles other than through wall housing type Feed type lampholders over 1000 V without conduit co
39、nnection means Interconnecting lampholders over 1000 V Metallic electrode receptacle enclosure Neon electrode enclosure Glass cup receptacles Conduit plug assembly GTO cable sleeving GTO cable with integral sleeving GTO cable splice enclosure Neon tube support Sign face material - not enclosure rate
40、d Enclosure sign face materials Sign face tensioning systems Structural materials Dimmers, ashers, controllers and animators LED displays Electroluminescent displays Switch enclosures Sign rotating equipment Clock mechanisms Lubricant 1.2.3 Components for factory installation only as identied in Tab
41、le 1.1 shall comply with the requirements in Sections24 . 1.2.4 A eld and factory installed component shall be intended and suitable for use in eld assembled skeletal neon signs and outline lighting installations in accordance with the National Electrical Code, NFPA 70. These components shall be of
42、a construction that does not place unique limits on the use of the components such that they cannot be installed in accordance with the requirements of NFPA 70. Components currently identied as intended for use in eld assembled skeletal neon signs and outline lighting are identied in Table 1.2. OCTO
43、BER 9, 2009 ELECTRIC SIGN COMPONENTS - UL 879 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.2.5 Components for eld and factory installation, as identied in Table 1.2, shall comply with the requirements in Sections25including maximum vol
44、tage rating, type of location, minimum temperature rating, and all other applicable requirements. Table 1.2 Field installed and factory installed components Field and factory installed components Through wall electrode receptacles Through wall housing receptacle grounding means Lampholder systems ov
45、er 1000 V Electrode receptacle enclosure Neon electrode splice and GTO cable polymeric enclosure systems (boots and sleeves) Glass cup neon electrode receptacle and GTO cable splice enclosure systems GTO cable splice enclosure GTO cable with integral sleeving GTO cable assemblies Neon transformer en
46、closures Neon tubing supports, cable supports and cable bushings Sign dimmers, ashers, controllers and animating equipment 1.3 Glossary 1.3.1 For the purpose of this standard, the following denitions apply. Denitions provided might not be terms used in the standard, but are provided to establish a b
47、asis of understanding terms used by the sign industry, component manufacturers and others. 1.3.2 ACCESSIBILITY BARRIER Material provided to limit access to the following. If all or part of the barrier also serves as an enclosure, see Enclosure, 1.3.22. a) Uninsulated live parts, b) Dead metal parts
48、that are at a risk of being energized and are not grounded, c) Live parts insulated with materials not intended to be subject to user contact, or d) Moving parts that present a risk of injury. 1.3.3 ACCESSIBLE PART See denitions for Part, 1.3.54. 1.3.4 ADHESIVE Bonding material (i.e. epoxy, paste, c
49、ement) placed between parts to be fastened together that adheres to each part, and remains the securement medium between the parts. 1.3.5 BARRIER See Accessibility Barrier 1.3.2, Insulating Barrier 1.3.37, Isolating Barrier 1.3.41, Thermal Barrier 1.3.68, and Water shield 1.3.73. 1.3.6 BLOCK-OUT PAINT Used to coat a neon tube to block the emission of light from a neon tube. Generally applied over the electrode, it can also be applied at various points along the tube.
