ANSI UL 879A-2012 UL Standard safety for LED Sign and Sign Retrofit Kits (First Edition Reprint with revisions through and including December 18 2013)《发光二级管(LED)标志和标志改造套件》.pdf

《ANSI UL 879A-2012 UL Standard safety for LED Sign and Sign Retrofit Kits (First Edition Reprint with revisions through and including December 18 2013)《发光二级管(LED)标志和标志改造套件》.pdf》由会员分享，可在线阅读，更多相关《ANSI UL 879A-2012 UL Standard safety for LED Sign and Sign Retrofit Kits (First Edition Reprint with revisions through and including December 18 2013)《发光二级管(LED)标志和标志改造套件》.pdf（42页珍藏版）》请在麦多课文档分享上搜索。

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 879A LED Sign and Sign Retrot KitsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER

2、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for LED Sign and Sign Retrot Kits, UL 879A First Edition, Dated December 12, 2012 Summary of Topics This revision to ANSI/UL 879A is being issued to address universal upkeep of UL Standards for Safety. These revisions ar

3、e considered to be non-substantive and not subject to ULs STP process. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an e

4、ffective date note indicating the date of publication or the date on which the changed requirement becomes effective. 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, record

5、ing, 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 liable for any special, incidental, co

6、nsequential, 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

7、 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, damage, claim, or judgment (includ

8、ing 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

9、 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 notice. DECEMBER 18, 2013 UL 879A t

10、r1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 18, 2013 UL 879A tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 12, 2012 (Title Page Repr

11、inted: December 18, 2013) 1 UL 879A Standard for LED Sign and Sign Retrot Kits First Edition December 12, 2012 This ANSI/UL Standard for Safety consists of the First Edition including revisions through December 18, 2013. The most recent designation of ANSI/UL 879A as an American National Standard (A

12、NSI) occurred on December 12, 2012. 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 Prop

13、osal Request in 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 S

14、tandards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 879A-2012UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 12, 2012 LED SIGN AND SIGN RETROFIT KITS - UL 879A 2 No Text

15、 on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .6 1.1 General .6 1.2 Retrot kits 6 1.3 New sign construction .6 2 Components 6 3 Units of Measurement .7 4 Undated References 7 5 Glossary .7 CONSTRU

16、CTION 6 Power Supplies and Transformers 8 6.1 General .8 6.2 Power supplies .9 6.3 Transformers .10 7 Enclosure of Live Parts .10 7.1 General 10 7.2 Metal enclosures 10 7.3 Polymeric enclosures 10 7.4 Openings .11 8 Supply Connections 12 9 Separation of Circuits 12 10 Over-Current Protective Devices

17、 12 11 Fuses .12 12 Circuit Breaker or Supplementary Protector 12 13 Thermal Protective Devices 13 14 Thermistors 13 15 LED Units or Modules .13 15.1 General .13 15.2 Conditions of use 14 16 Secondary Wiring .14 16.1 Class 1 wiring 14 16.2 Class 2 wiring 14 16.3 Class 3 wiring 15 PERFORMANCE 17 Gene

18、ral 15 18 Input Test 15 19 Normal Temperature Test 15 20 Dielectric Voltage Withstand Test .15 21 Abnormal Operation Test 16 22 Installation and Assembly Test .16 MARKINGS 23 Marking Method 16 24 Required Markings 17 DECEMBER 12, 2012 LED SIGN AND SIGN RETROFIT KITS - UL 879A 3UL COPYRIGHTED MATERIA

19、L NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INSTALLATION INSTRUCTIONS 25 LED Kits for Factory Installation in New Signs 18 26 LED Kits for Field Installation in Existing Signs .18 SUPPLEMENT SA - SUPPLEMENTAL REQUIREMENTS FOR TUBULAR LIGHT-EMITTING DIODE LAMP

20、S INTRODUCTION SA1 Scope SA1 SA2 Glossary SA1 MECHANICAL CONSTRUCTION SA3 Openings .SA2 SA4 Polymeric Materials SA3 SA5 Weight and Moment .SA4 ELECTRICAL CONSTRUCTION SA6 Lamp Bases and Lampholders SA4 SA7 Ballasts and LED Drivers .SA5 SA8 Spacing of Electrical Parts SA5 SA9 Light Source Light Emitt

21、ing Diodes (LED) .SA5 SA10 Light Source Non-Discharge Lamps .SA6 SA11 Grounding .SA6 SA12 Polarization SA6 SA13 Devices Substituting for Linear Fluorescent Lamps .SA6 PERFORMANCE SA14 General .SA8 SA15 Input Measurements SA9 SA16 Lamp Starting and Operating Measurements .SA9 SA17 Temperature Test SA

22、9 SA18 Dielectric Voltage Withstand Test SA10 SA19 Drop Impact Test SA10 SA20 Strain Relief Test for Lamp Connectors SA10 SA21 Tests of Dimmer Circuits .SA11 SA22 Lamp Fault Conditions Test .SA11 SA23 End-of-Lamp-Life Tests for Fluorescent Lamp Adapters SA11 SA24 End-of-Life Test for Integral, Self-

23、Ballasted Fluorescent Lamps One Filament Emission-Mix-Free Test SA11 SA25 Risk of Electric Shock Relamping SA11 SA26 Isolation of Lamp Pins .SA11 SA27 Mis-Application of Lamp Supply Connections .SA12 SA28 LED Lamp and Driver Abnormal Condition Tests SA12 SA29 Test Apparatus SA13 SA29.1 Risk of elect

24、ric shock relamping setup .SA13 DECEMBER 12, 2012 LED SIGN AND SIGN RETROFIT KITS - UL 879A 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SA29.2 Temperature test apparatus SA14 RATINGS SA30 Markings and Ratings SA14 APPENDIX A Standards f

25、or ComponentsA1 DECEMBER 12, 2012 LED SIGN AND SIGN RETROFIT KITS - UL 879A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 General 1.1.1 This standard covers LED (light emitting diode) kits intended for eld install

26、ation to retrot signs already installed in the eld and LED kits intended for installation in new signs. 1.2 Retrot kits 1.2.1 These LED kits are intended to replace the electrical components related to the type of illumination used in a sign, such as neon, uorescent, and HID. Neon sign components in

27、clude neon tubes, tube supports, neon power supplies, and all secondary wiring from the neon supply. Fluorescent sign components include uorescent tubes, ballast, and ballast secondary wiring, and in some cases lampholders. 1.2.2 Retrot kits include the power supply or transformer, power supply or t

28、ransformer enclosure, the LEDs and the LED mounting means, and installation instructions. 1.3 New sign construction 1.3.1 Component power units may be incomplete with respect to electrical enclosure, mounting, supply connections, etc. 1.3.2 LEDs, secondary wiring, and LED transformers or supplies ma

29、y be provided separately. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that component. See the Component Appendix for a list of standards covering components used in the products covered by this standard. 2.2 A

30、component 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; b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with i

31、ts rating established for the intended conditions of use. 2.4 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

32、be used only under those specic conditions. DECEMBER 12, 2012 LED SIGN AND SIGN RETROFIT KITS - UL 879A 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values

33、 in parentheses are explanatory or approximate information. 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 CLASS 2 CIRCUIT The wiring,

34、 conductors and components connected only to a Class 2 supply source. See Class 2 Supply Source, 5.2. 5.2 CLASS 2 SUPPLY SOURCE An electrical source, such as a transformer, power supply, or battery, having an open-circuit voltage that is less than 30 Vrms (42.4 Vpeak) or 60 Vdc and having limited en

35、ergy available in the circuit under load conditions, including short-circuit and extremely low resistance. A Class 2 supply source can be either inherently limited or non-inherently limited. a) INHERENTLY LIMITED SUPPLY SOURCE A transformer, power supply or battery having no discrete protective devi

36、ce that is relied upon to limit the output energy available from the supply. A power supply or battery with internal current and energy limiting circuitry shown to be reliable is eligible to be identied as inherently limited. Transformers, power supplies and batteries may be provided with protective

37、 devices as long as they are not relied upon to limit the output. b) NON-INHERENTLY LIMITED SUPPLY SOURCE A transformer, power supply or battery having a discrete protective device that automatically interrupts the output when the current and energy output reaches a prescribed limit. 5.3 CONDITIONS

38、OF USE Parameters and specications that identify the proper use of a component according to the requirements to which it has been determined to comply, and limitations of the use of the component in a sign or outline lighting. 5.4 DAMP LOCATION The designation for a component that has been evaluated

39、 generally for use in exterior locations where protected overhead from rain and snow, or interior locations where subject to moderate degrees of moisture, primarily by humidity and condensation. Protected overhead is generally considered to be within an area formed by an imaginary line drawn from th

40、e outer edge of the eave, overhang, or signbody inward at a 45 angle from vertical. Additionally, the interior of a sign body provided with a sign face and installed in an outdoor exposed location is a damp location. Examples include partially protected areas such as under a canopy, under a roofed p

41、orch, or indoors in a car wash away from a direct water spray. 5.5 DRY LOCATION The designation for a component that has been evaluated for use in an environment where the component is not normally subject to dampness or wetness. Examples include inside an indoor shopping mall, inside a retail store

42、, in an attic or scuttle, and other similar places. 5.6 ELV CIRCUIT A secondary circuit with limited voltage and energy that reduces the risk of re and shock in accordance with the requirements in the Standard for Information Technology Equipment Safety Part 1: General Requirements, UL 60950-1. DECE

43、MBER 12, 2012 LED SIGN AND SIGN RETROFIT KITS - UL 879A 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.7 HAZARDOUS ENERGY LEVEL A stored energy level of 20 J or more, or an available continuous power level of 240 VA or more, at a potenti

44、al of2Vo rmore. 5.8 LPS-LIMITED POWER SOURCE Power supplies identied as LPS or where the output is considered limited power, are considered equivalent to power supplies with Class 2 outputs. 5.9 POLLUTION DEGREES: a) POLLUTION DEGREE 2 Normally only non-conductive pollution. However, temporary condu

45、ctivity is capable of being caused by condensation. b) POLLUTION DEGREE 3 Conductive pollution, or dry, non-conductive pollution that becomes conductive due to condensation. 5.10 RETROFIT KIT A general term for a complete subassembly of parts and devices for eld conversion of utilization equipment.

46、5.11 SAFETY EXTRA-LOW VOLTAGE (SELV) CIRCUIT A secondary circuit with limited voltage and energy that reduces the risk of re and shock in accordance with the requirements in the Standard for Information Technology Equipment Safety Part 1: General Requirements, UL 60950-1. 5.12 WEATHERPROOF See Wet L

47、ocation, 5.13. 5.13 WET LOCATION The designation of a component that has been evaluated for use in a location that is subject to a direct spray or splashing of water or other liquids. Examples include locations used for outdoor channel letters and outline lighting or indoors in a car washing area in

48、 a direct water spray. CONSTRUCTION 6 Power Supplies and Transformers 6.1 General 6.1.1 Power supplies and transformers are required to operate within their rated input and output ratings. 6.1.2 Power supplies and transformers shall be enclosed in an electrical enclosure. 6.1.3 Power supplies and tr

49、ansformers may have more than one Class 2 or LPS output. DECEMBER 12, 2012 LED SIGN AND SIGN RETROFIT KITS - UL 879A 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.2 Power supplies 6.2.1 General 6.2.1.1 Except for features specied in this standard, power supplies shall comply with the requirements of the Standard for Electric Sign Components, UL 879. 6.2.2 Power supplies for portable LED signs 6.2.2.