1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1838 Low Voltage Landscape Lighting SystemsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FO
2、R FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Low Voltage Landscape Lighting Systems, UL 1838 Third Edition, Dated January 13, 2003 Summary of Topics These revisions to ANSI/UL 1838 include the following changes in requirements: Revision to Ambient Temp
3、erature Measurement Method. Editorial Revision. Power Supply Cord Types. Location of marking for wet location power units with doors. 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 mar
4、ked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated August 22, 2014 and Oct
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9、ng 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 Standard having future effective dates as indicated in the note following the affected item. The prior
10、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that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JANUARY 13, 2015 UL 1838 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM
11、 UL JANUARY 13, 2015 UL 1838 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 13, 2003 (Title Page Reprinted: January 13, 2015) 1 UL 1838 Standard for Low Voltage Landscape Lighting Systems First Edition March,
12、 1994 Second Edition March, 1996 Third Edition January 13, 2003 This ANSI/UL Standard for Safety consists of the Third edition including revisions through January 13, 2015. The most recent designation of ANSI/UL 1838 as an American National Standard (ANSI) occurred on January 13, 2015. ANSI approval
13、 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 ULs On-Line Collaborative Standar
14、ds 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 remain the sole and exclusive prop
15、erty of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 1838-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 26, 2010 LOW VOLTAGE LANDSCAPE LIGHTING SYSTEMS - UL 1838 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTH
16、ORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .9 2 Glossary 10 2A Electric Shock 14 3 Components .14C 4 Units of Measurement .14C 5 Undated References 14C 6 Organization and Application .14C PART 1 POWER UNITS MECHANICAL CONSTRUCTION 7 Gener
17、al .14D 8 Enclosures 15 9 Metal Thickness .15 9.1 Sheet metal 15 9.2 Extrusions 16 9.3 Cast metal 16 10 Corrosion Protection 16 11 Open Holes 18 12 Drain Holes 20 13 Openings 21 14 Gaskets and Bushings 21 ELECTRICAL CONSTRUCTION 15 General 21 15.1 Class 2 Circuits Within Power Unit .21 15.1A Class 2
18、 Power Units .22 15.2 Wiring devices .22 15.3 Internal wiring connections 22 15.4 Insulation 22 15.5 Prevention of wire damage .22A 16 Device and Conductor Ratings .23 16.1 Voltage .23 16.2 Current .23 17 Switches and Relays 23 18 Convenience Receptacles .24 19 Wiring and Conductors 24 20 Protective
19、 Devices 25 21 Printed Wiring Boards .25 22 Separation of Circuits .25 22.1 General .25 22.2 Separation of Conductors .25 22.3 Output circuit isolation 26 23 Electrical Spacings 26A 24 Power Supply and Output Circuit Connections .29 JULY 16, 2012 LOW VOLTAGE LANDSCAPE LIGHTING SYSTEMS - UL 1838 3UL
20、COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 24.1 Power supply connection method 29 24.2 Power supply conduit connection and conductor connection provisions .29 24.3 Power supply cord 31 24.4 Output circuit connection provisions 32 24.5 Dele
21、ted August 7, 2007 .33 25 Grounding and Bonding .33 25.1 Grounding .33 25.2 Bonding .34A 26 Water Shields 35 PERFORMANCE 27 Test Parameters 35 28 Input and Output Tests 36 28.1 Input test 36 28.2 Maximum output test .36 29 Overload Test 36 30 Burnout Test .38 31 Endurance Test 38 32 Dielectric Volta
22、ge Withstand Test .39 33 Temperature Test .40 34 Grounding Continuity Test .43 35 Leakage Current Test .44 36 Leakage Current Test Following Humidity Conditioning 47 37 Weather Tests 47 37.1 General .47 37.2 Impact conditioning .48 37.3 General test conditions 48 37.4 General test results .49 37.5 S
23、prinkler test 49 37.6 Immersion test .52 37.7 Gasket tests .53 37.8 Gasket adhesion test .53 37.9 Rain test 54 38 Strain Relief Test .55 39 Screw Torque Test 55 40 Polymeric Enclosure Conduit Connection Tests 55 40.1 General .55 40.2 Pullout 55 40.3 Torque 56 40.4 Bending .56 41 Tests on knockouts .
24、57 42 Impact Test on Units With Open Holes 58 43 Component Fault Test .58 44 Short Circuit Test .59 45 Limited Short Circuit Test 59 MANUFACTURING AND PRODUCTION TESTS 46 Dielectric Voltage Withstand Test .60 47 Polarity Test .61 48 Continuity of Grounding Connection Test 61 JULY 16, 2012 LOW VOLTAG
25、E LANDSCAPE LIGHTING SYSTEMS - UL 1838 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL RATINGS 49 Details .62 MARKING 50 Details .62 51 Installation Instructions 66 PART 2 EQUIPMENT CONNECTED TO THE POWER UNIT OUTPUT CONSTRUCTION 52 General
26、 66A 53 Output Circuit Wiring and Connections 67 53.1 General .67 53.2 Internal wiring 67 53.3 Main low voltage cable 68 53.4 Unit low voltage cable 69 PERFORMANCE 54 Temperature .69 55 Insulation-Piercing Terminal Temperature Test 70A MARKING 56 General 72 57 Installation Instructions 73 PART 3 TUN
27、GSTEN-HALOGEN LUMINAIRES INTRODUCTION 58 General 74 CONSTRUCTION 59 Lamp Containment Barrier .74 PERFORMANCE 60 Adhesively Secured Lamp Containment Barrier Test .74A 61 Lamp Containment Adhesive Support Test .76 62 Abnormal Operation Tests .76 62.1 General .76 62.2 Severe condition .77 62.3 Vertical
28、 surface 77 62.4 Overlamping .78 63 Polymeric Lamp Containment Barrier Test .78 63.1 General .78 MARCH 26, 2010 LOW VOLTAGE LANDSCAPE LIGHTING SYSTEMS - UL 1838 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 63.2 Test method .78 MARKING 64
29、 General 79 65 Instructions 80 PART 4 POND AND SMALL DECORATIVE FOUNTAIN LUMINAIRES AND FITTINGS INTRODUCTION 66 General 81 CONSTRUCTION 67 Water Barriers 81 67.1 General .81 67.2 Gaskets .82 67.3 Adhesives and Sealants 82 68 Immersed Low Voltage Cable 82 PERFORMACE 69 Temperature Test .82 70 Water
30、Leakage Test 83 70.1 General .83 70.2 Impact conditioning .83 70.3 Water leakage .83 MARKING 71 General 87 INSTRUCTIONS 72 Installation Instructions 88 Appendix A Standards for ComponentsA1 JULY 16, 2012 LOW VOLTAGE LANDSCAPE LIGHTING SYSTEMS - UL 1838 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR
31、THER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 7, 2007 LOW VOLTAGE LANDSCAPE LIGHTING SYSTEMS - UL 1838 7 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This page intentionally left blank. AUGUST 7,
32、2007 LOW VOLTAGE LANDSCAPE LIGHTING SYSTEMS - UL 1838 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 The requirements in this standard apply to a low-voltage landscape lighting system and components that consist of
33、 an isolating type power unit, low voltage cable or exible cord, and luminaires. The equipment is intended to be installed in accordance with the National Electrical Code, ANSI/NFPA 70, Article 411. 1.1 revised February 24, 2014 1.2 Landscape lighting power units covered by this standard have a maxi
34、mum output circuit voltage as specied in Table 2A.1. Revised 1.2 effective August 7, 2009 1.3 This standard covers power units where each output circuit is rated maximum 25 A and 300 VA. 1.3 revised August 7, 2007 1.4 This standard covers landscape lighting system luminaires and other system compone
35、nts that are intended for use on circuits rated maximum 25 A 300 VA, and the voltage specied in Table 2A.1. 1.4 added August 7, 2007 1.5 The luminaires and low voltage system components covered by this standard are intended for garden, walkway, patio areas, or similar outdoor locations and for certa
36、in indoor locations such as atriums and shopping malls. The power units are to be installed indoors or outdoors in accordance with the marking on the product. 1.5 revised January 13, 2015 1.6 This standard covers luminaires and low voltage system components intended for use submersed in or oating on
37、: a) portable self-contained fountains; and b) ponds and other natural and articially made body of water within the scope of Article 682 “Natural and Articially Made Bodies of Water” of the National Electrical Code, NFPA 70. Added 1.6 effective August 7, 2009 1.7 Throughout this standard, all requir
38、ements identied as applicable to luminaires and low voltage system components used submerged in or oating on ponds also apply to luminaires and low voltage system components intended for use in other bodies of water covered by Article 682 of the National Electrical Code, ANSI/NFPA 70. Further, marki
39、ngs, instructions, and other product specic information shall be permitted to refer to one or more bodies of water covered by Article 682 in addition to ponds or instead of ponds. Added 1.7 effective August 7, 2009 1.8 The luminaires and low voltage system components covered by this standard are not
40、 suitable for use in swimming pools, spas, other bodies of water intended to contain immersed persons, or permanent fountains covered by Part V of Article 680 of the National Electrical Code, ANSI/NFPA 70. Luminaires intended for use in these locations are covered by the Standard for Underwater Lumi
41、naires and Junction Boxes, UL 676. Fountains covered by Part V of Article 680 of the National Electrical Code, ANSI/NFPA 70 are permanent, not self-contained, not portable, or exceed 5 feet (1.5 m) in any dimension. Added 1.8 effective August 7, 2009 JANUARY 13, 2015 LOW VOLTAGE LANDSCAPE LIGHTING S
42、YSTEMS - UL 1838 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.9 Fluorescent and high intensity discharge lighting systems will be investigated in accordance with the applicable requirements in this standard and with the applicable requ
43、irements in the Standard for Luminaires, UL 1598, as intended. 1.9 added August 7, 2007 1.10 Light emitting diode (LED) components and subassemblies, such as drivers, control gear, and LED arrays, shall comply with the applicable requirements of the Standard for Lighting Emitting Diode (LED) Equipme
44、nt for Use in Lighting Products, UL 8750. 1.10 added July 16, 2012 2 Glossary 2.1 For the purpose of this standard, the following denitions apply. 2.2 ACCESSIBILITY BARRIER A material provided to restrict access to: a) Uninsulated current carrying parts; and b) Current carrying parts insulated with
45、materials not intended to be subject to user contact. All or part of the barrier is able to serve as an enclosure. 2.2.1 CLASS 1 WIRING METHODS Wiring methods specied in Chapter 3 of the National Electrical Code, ANSI/NFPA 70. 2.2.1 added August 7, 2007 2.2.2 CLASS 2 CIRCUIT A circuit supplied by ei
46、ther (a) a transformer complying with the construction and performance requirements for Class 2 transformers in the Standard for Low Voltage Transformers Part 1: General Requirements, UL 5085-1 and the Standard for Low Voltage Transformers Part 3: Class 2 and Class 3 Transformers, UL 5085-3; or (b)
47、a power unit complying with the construction and performance requirements in the Standard for Class 2 Power Units, UL 1310. 2.2.2 added August 7, 2007 2.3 Deleted July 16, 2012 2.4 CONNECTOR A generic term used to refer to an electrical tting that: a) Connects the luminaire to the main low voltage c
48、able (also called line-to-luminaire connector); or b) Is used to extend main low voltage cable (also called line-to-line connector). 2.4 revised August 7, 2007 2.5 DECORATIVE PART A part of a product that is present for ornamental purposes only. The product shall meet the requirements of this standa
49、rd when the decorative part is provided, removed, damaged, or deteriorated to any extent. 2.5 revised August 7, 2007 2.6 ELECTRICAL FITTING Any device that supports or encloses uninsulated current carrying parts. JULY 16, 2012 LOW VOLTAGE LANDSCAPE LIGHTING SYSTEMS - UL 1838 10UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.7 ELECTRONIC POWER UNIT Equipment that powers and controls the lamps used for a landscape ligh
