1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1574 Track Lighting SystemsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPROD
2、UCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Track Lighting Systems, UL 1574 Third Edition, Dated September 7, 2004 Summary of Topics This revision to ANSI/UL 1574 is being issued to remove the reference to the withdrawal date of UL 873 and to address universal upkeep
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10、EQUIREMENTS notice. APRIL 17, 2015 UL 1574 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 17, 2015 UL 1574 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION F
11、ROM UL SEPTEMBER 7, 2004 (Title Page Reprinted: April 17, 2015) 1 UL 1574 Standard for Track Lighting Systems Prior to the rst edition, the requirements for the products covered by this standard were included in the Standard for Electric Lighting Fixtures, UL 57. First Edition January, 1987 Second E
12、dition May, 1995 Third Edition September 7, 2004 This ANSI/UL Standard for Safety consists of the Third edition including revisions through April 17, 2015. The most recent designation of ANSI/UL 1574 as an American National Standard (ANSI) occurred on January 25, 2012. ANSI approval for a standard d
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15、IGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 1574-2012UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 7, 2004 TRACK LIGHTING SYSTEMS - UL 1574 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
16、N OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 Units of Measurement .8 3 Glossary .8 4 Components 13 5 Undated References .13 CONSTRUCTION TRACK SYSTEMS 6 Assembly .14 7 Packaging 14 8 Enclosures 14 9 Corrosion Protection .16 10 Joining of Enclosure Parts .16 11 Prev
17、ention of Wire Damage 17 12 Wire and conductors 17 13 Network Conductors 18 13.1 General .18 13.2 Pigtail leads .18 14 Splices and Connections 19 15 Current-Interrupting Devices .19 16 Switches .19 17 Accessibility of Current-Carrying Parts .20 18 Spacings 23 19 Polarity 23 20 Interchangeable Fittin
18、gs .24 21 Bonding .24 22 Grounding Means .25 23 Supply Connection Means .26 24 Wiring Terminals 29 25 Wiring Compartment And Junction Box Volume For Branch Circuit Conductors 30 26 Conduit Connection .31 27 Outlet Box Connection 32 CONSTRUCTION TRACK NETWORKS TRACK 28 Field Drilling 34 29 Mounting O
19、penings .34 30 Mounting Means 35 31 Field Cutting .35 CONNECTORS AND CANOPIES 32 General 36 33 Intercept Connectors 36 34 Surface Raceway Connection 37 35 Mono-, Duo-, or Multi-Point Canopies .37 SEPTEMBER 7, 2004 TRACK LIGHTING SYSTEMS - UL 1574 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
20、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 36 Recessed Track and Channels .40 FITTINGS 37 General 40 38 Hooks .41 CONSTRUCTION LUMINAIRE ASSEMBLIES 39 General 41 40 Enclosures .41 41 Lamp Containment Barriers 43 42 Open Holes 45 43 Splices 46 44 Wire and conductors 46 45 Cord-Pendant Lum
21、inaire Assemblies 47 46 Adapters .47 47 Ballasts and Transformers .47 48 Fusing .48 49 Lampholders .48 50 Capacitors .48 50.1 General .48 50.2 Nonintegral oil-lled capacitors .50 51 Power Packs .51 52 Pendant Luminaire Adaptor 51 PERFORMANCE SYSTEM 53 Grounding Resistance Test 52 53.1 General .52 53
22、.2 Electrical tting measurement 52 53.3 Test method .52 53.4 Test setup Surface mounted track 53 53.5 Test setup Recessed track 54 53.6 Recessed track for recessed luminaire assemblies .55 53.7 Recessed track for non-recessed luminaire assemblies .55 53.8 Unheated condition test .55 53.9 Heated cond
23、ition test .55 54 Normal Temperature Test 56 54.1 General .56 54.2 Temperature test conditions HID luminaire assembly .59 54.3 Fixture assemblies measurement .60 54.4 Test setup Surface mounted track 60 54.5 Test setup Recessed mounted track 62 55 Abnormal Recessed Temperature Test .62A 55A Strain R
24、elief Test 62B OCTOBER 27, 2011 TRACK LIGHTING SYSTEMS - UL 1574 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL TRACK NETWORKS 56 Security of Knockout Test 64 57 Mold Stress Relief Distortion Test .64 58 Insulation Resistance Test .65 59 A
25、daptor Overload Test 65 60 Adaptor Tests 66 60.1 Strength of adaptor .66 60.2 Adaptor moment .66 61 Polymeric Enclosure Impact Tests 68 61.1 General .68 61.2 Drop impact test .68 61.3 Ball impact test 69 62 Conductor Displacement Tests .70 62.1 General .70 62.2 Horizontal conductor displacement test
26、 .70 62.3 Vertical conductor displacement test 70 63 Field Track Cutting Test .70 64 Track Clip Securement Test 71 65 Pendant-Mounted Track Torque Test 71 66 Strength of Luminaire Assembly Test .72 67 Pendant-Mounted Track/Connector Strength Test .73 68 Track Rigidity Test 75 69 Mechanical Means of
27、Polarity Test 75 70 Field Drilling Test .76 71 Direct-Current Bus Bar or Conductor Resistance Test .76 LUMINAIRES 72 Strain Relief Test Cord-Pendant Luminaire Head .77 73 Strain Relief Test Lamp-Supported Lampholders and Exposed Wires or Cords .78 73.1 General .78 73.2 Lamp-supported lampholder and
28、exposed wires or cords 78 73.3 Exposed wires or cords used to limit luminaire motion 78 74 Glass Thermal Shock/Containment Test .79 74.1 General .79 74.2 Test method .79 75 Polymeric Lamp Containment Barrier 79 75.1 General .79 75.2 Test method .80 FITTINGS 76 Hook Test .80 MANUFACTURING AND PRODUCT
29、ION LINE TESTS 77 Production-Line Dielectric Voltage-Withstand Test 81 RATINGS 78 General 81 SEPTEMBER 7, 2004 TRACK LIGHTING SYSTEMS - UL 1574 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKING GENERAL 79 Markings .82 TRACK NETWORKS 8
30、0 Track 83 80.1 General .83 80.2 Clip-mounted track .83 80.3 Non-pendant track 83 80.4 Recessed track 83 80.5 Recessed track for recessed luminaire assemblies .84 81 Intercept Connectors 84 82 Feed Connectors .84 LUMINAIRE 83 Luminaire Assemblies .86 INSTRUCTIONS 84 Installation Instructions 87 84.1
31、 General .87 84.2 Track .87 85 Feed Connectors .89 86 Connectors, Luminaire Assemblies, and Miscellaneous Electrical Fittings 90 87 Important Safety Instructions .90 APPENDIX A Standards for ComponentsA1 SEPTEMBER 7, 2004 TRACK LIGHTING SYSTEMS - UL 1574 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F
32、URTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover track lighting systems intended for permanent connection to sources of supply in commercial or residential ordinary locations in accordance with the National Electrical Code, NFPA 70. The
33、 track lighting systems covered by this standard are rated: a) 300 volts or less; b) 150 volts or less to ground; and c) 50 amperes or less. 1.2 Lighting track is intended to be permanently installed and permanently connected to a branch circuit not exceeding 277 volts, nominal to ground, and 50 amp
34、eres. 1.3 These requirements cover: a) Track networks consisting of track and connectors; b) Mono-, duo-, and multi-point canopies; c) Incandescent, uorescent, and high intensity discharge (HID) luminaire assemblies intended to be electrically connected to and physically supported by the track in tr
35、ack networks and canopies; d) Mounting means for the track; and e) Accessories. 1.4 These requirements do not cover: a) Busways intended for lighting, receptacles, or other general-purpose adaptors covered by the Standard for Busways, UL 857, and intended for use in accordance with Article 364 of th
36、e National Electrical Code, NFPA 70; or b) Track lighting systems for marine use aboard a ship or boat. 1.5 Track lighting systems are not intended for use: a) In wet or damp locations; b) In installations where the track is concealed; c) In hazardous locations; d) Where subject to physical damage;
37、e) Where the track is extended through walls or partitions of building structures; f) Where subject to corrosive vapors; or SEPTEMBER 7, 2004 TRACK LIGHTING SYSTEMS - UL 1574 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL g) In storage bat
38、tery rooms. 1.6 A track lighting luminaire assembly that uses a tungsten-halogen lamp, uorescent lamp, or high-intensity-discharge lamp shall also comply with the applicable requirements from the Standard for Luminaires, UL 1598. 1.7 Light emitting diode (LED) components and subassemblies integral t
39、o lighting track or a luminaire assembly covered by this standard shall comply with the applicable requirements of the Standard for Light Emitting Diode (LED) Equipment for Use in Lighting Products, UL 8750. 1.7 added January 25, 2012 2 Units of Measurement 2.1 Values stated without parentheses are
40、the requirement. Values in parentheses are explanatory or approximate information. 2.2 Unless indicated otherwise, all voltage and current values mentioned in this standard are root mean square (rms). 3 Glossary 3.1 For the purpose of this standard, the following denitions apply. Some terms unique t
41、o track systems are illustrated in Figure 3.1. This is generated text for gtxt. JANUARY 25, 2012 TRACK LIGHTING SYSTEMS - UL 1574 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 3.1 Electrical ttings in a typical track system 1 Canop
42、y (see 3.6) 6 Straight intercept connector (see 3.23) 13 Luminaire head (see 3.31) 1A Mono- or duo-point canopy (see 3.7) 7 Floating feed connector (see 3.21) 14 Luminaire assembly (see 3.30) 1B Multi-point canopy (see 3.8) 8 Canopy for oating feed connector (see 3.6) 15 T-shaped intercept connector
43、 (see 3.23) 2 End feed connector (see 3.18) 9 X-shaped intercept connector (see 3.23) 16 End cap (see 3.17) 3 Track (see 3.46) 10 L-shaped intercept connector (see 3.23) 17 Adjustable intercept connector (see 3.23) 4 Bus bar support mounted inside track section (see 3.5) 11 Power pack (see 3.37) 18
44、Center feed connector (see 3.9) 5 Bus bars mounted inside bus bar support (see 3.4) 12 Adaptor (see 3.3 and 3.30) SEPTEMBER 7, 2004 TRACK LIGHTING SYSTEMS - UL 1574 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.2 ACCESSORY An attachment
45、 (such as a shutter, barn door assembly, or iris) provided by the manufacturer for connection to a luminaire assembly. 3.3 ADAPTOR A component of a luminaire assembly intended to mate with a track and provide mechanical securement and electrical connection. 3.4 BUS BAR A conductor electrically conne
46、cted to the source of supply and physically located inside a track (conductors in connectors are considered internal wiring). The bus bar provides power supply connection for luminaire assemblies along the length of the track. 3.5 BUS BAR SUPPORT An insert, usually made of a polymeric material, that
47、 runs the length of a section of track and serves to support the bus bars and to isolate them while providing an opening that makes electrical contact between the bus bars and an adaptor possible. 3.6 CANOPY A cover, either provided integral with or separate from a feed connector, that is intended t
48、o cover the outlet box by securing to the outlet box feed connector or directly to the ceiling. 3.7 CANOPY, MONO- OR DUO-POINT A canopy which mounts directly over an outlet box and is provided with a section of track that can accept one or two luminaire assemblies at a time. A mono- or duo-point can
49、opy is constructed such that additional lengths of track cannot be mechanically or electrically connected to the canopy. 3.8 CANOPY, MULTI-POINT A canopy which mounts directly over an outlet box and is provided with a section of track that can accept more than one luminaire assembly at a time. A multi-point canopy is constructed such that additional lengths of track cannot be mechanically or electrically connected to the canopy. 3.9 CENTER
