1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 379 Power Units for Fountain, Swimming Pool, and Spa Luminaires STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULU
2、L COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Power Units for Fountain, Swimming Pool, and Spa Luminaires, UL 379 First Edition, Dated June 19, 2013 Summary of Topics Revision pages are being issued to reect the r
3、ecent reaffirmation of UL 379 as an American National Standard. Text that has been changed 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
4、transmitted in any form by any means, electronic, 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 tne
5、ss for any purpose. In no event will UL be liable 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 represe
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7、from and against any loss, expense, liability, 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. SEPTEMBER 19, 2017 UL 379 tr1UL COPYRIGHTED MATERIAL N
8、OT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 19, 2017 UL 379 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 19, 2013 (Title Page Reprinted: September 19, 2017) 1 UL
9、 379 Standard for Power Units for Fountain, Swimming Pool, and Spa Luminaires First Edition June 19, 2013 This ANSI/UL Standard for Safety consists of the First Edition including revisions through September 19, 2017. The most recent designation of ANSI/UL 379 as a Reaffirmed American National Standa
10、rd (ANS) occurred on September 19, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. 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
11、-Line Collaborative Standards Development System (CSDS) at https:/. 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
12、 the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 379-2013 (R2017)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 19, 2013 UL 379 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED F
13、OR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PART I ALL POWER UNITS FOR FOUNTAIN, SWIMMING POOL, AND SPA LUMINAIRES INTRODUCTION 1 Scope .5 2 General 5 2.1 Power units 5 2.2 Undated references .5 2.3 Units of measurement .5 2.4 Electrical rating .5 2.5 DC output units
14、6 3 Components .6 3.1 General 6 3.2 Fuseholders .7 3.3 Fuses .7 3.4 Printed wiring boards 8 3.5 Terminal blocks 8 3.6 Wire connectors 9 3.7 Quick-connect wire connectors .9 CONSTRUCTION 4 Output Circuit Isolation 9 5 Class 2 Circuits Within Power Unit .10 6 Mechanical Assembly 10 7 Enclosures 11 7.1
15、 General .11 7.2 Resistance to corrosion 12 7.3 Conduit connection provisions 13 7.4 Openings .14 7.5 Rain-tight enclosures .14 8 Splices and Connections 15 9 Separation of Circuits 15 10 Field-Wiring Connections 15 10.1 General .15 10.2 Terminals 15 10.3 Pigtail leads 16 11 Bushings for Wiring .17
16、12 Insulating Material for Mounting Live-Metal Parts .17 13 Coil Insulation .17 14 Wiring Devices 18 15 Electrical Spacings 18 16 Output Overload Protection 19 17 Grounding 19 18 Marking 20 JUNE 19, 2013 UL 379 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT
17、PERMISSION FROM UL PERFORMANCE 19 General 22 20 Leakage Current Test 23 21 Open-Circuit Voltage Test .23 22 Input Test 23 23 Heating Test 24 24 Dielectric Strength Test 26 25 Abnormal Heating Test followed by Dielectric Strength Test 27 26 Burnout Test .30 27 Pullout, Bending, and Twisting Tests 31
18、28 Endurance Test on Automatically-Reset Thermostats .31 29 Overload Test on Manually-Reset Thermostats .31 30 Rain Test .32 PART II POWER UNITS INTENDED FOR DIRECT CONDUIT CONNECTION TO A WET-NICHE OR NO-NICHE LUMINAIRE 31 General 32 JUNE 19, 2013 UL 379 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
19、FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PART I ALL POWER UNITS FOR FOUNTAIN, SWIMMING POOL, AND SPA LUMINAIRES INTRODUCTION 1 Scope 1.1 These requirements cover eld-installed air-cooled transformers and dc output power supplies intended to supply fountain, swimming pool, and
20、spa luminaires in accordance with Article 680 of the National Electrical Code, NFPA 70. 1.2 These requirements do not address designs that vary the magnitude of voltage or current on the output for signal or control purposes. Designs that superimpose a signal on the output for control purposes area
21、also not addressed. 2 General 2.1 Power units 2.1.1 These power units are not intended for installation in specic luminaires. 2.2 Undated references 2.2.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest editio
22、n of that code or standard. 2.3 Units of measurement 2.3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.3.2 Unless indicated otherwise, all voltage and current values mentioned in this standard are root-mean-square (rms).
23、2.4 Electrical rating 2.4.1 The input is to be rated a nominal 120 volts; the secondary shall be rated 15 volts ac or less or 30 volts dc or less and 1000 volt-amperes or less. JUNE 19, 2013 UL 379 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FR
24、OM UL 2.5 DC output units 2.5.1 Each output of a direct current (DC) power unit for supply of underwater luminaires for fountains, pools, and spas shall comply with items (a) and (b) below. a) The circuit shall be rated 30 VDC or less. The maximum output voltage in normal use and under any single fa
25、ult condition shall not exceed 30 VDC. b) Under all combinations of constant resistive load and single fault conditions, the peak-to- peak value of ripple voltage and ripple current measured on the circuit shall be not more than 10 percent of the measured DC value. 3 Components 3.1 General 3.1.1 A c
26、omponent of a product covered by this Standard shall: a) Comply with the requirements for that component as specied in this Section; b) Be used in accordance with its rating(s) established for the intended conditions of use; c) Be used within its established use limitations or conditions of acceptab
27、ility; and d) Comply with the applicable requirements of this end product Standard. 3.1.2 A component of a product covered by this Standard is not required to comply with a specic component requirement that: a) Involves a feature or characteristic not required in the application of the component in
28、the product; b) Is superseded by a requirement in this Standard; or c) Is separately investigated when forming part of another component, provided the component is used within its established ratings and limitations. 3.1.3 Specic components are incomplete in construction features or restricted in pe
29、rformance 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. 3.1.4 A component that is also intended to perform other functions such as overcurrent protecti
30、on, ground-fault circuit-interruption, surge suppression, any other similar functions, or any combination thereof, shall comply additionally with the requirements of the applicable UL standard(s) that cover devices that provide those functions. JUNE 19, 2013 UL 379 6UL COPYRIGHTED MATERIAL NOT AUTHO
31、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.1.5 Any component used shall not present the risk of re, electric shock or casualty hazards. 3.1.6 Components shall be suitable for the intended use and installation environment. This suitability shall assume the following i
32、nstallation parameters: a) Outdoor, Pollution Degree 3 installations. b) Overvoltage Category III as specied in the Standard for Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment, UL 840. 3.2 Fuseholders 3.2.1 Fuseholders shall comply with the Standard for
33、Fuseholders Part 1: General Requirements, UL 4248-1, and: a) The Standard for Fuseholders Part 4: Class CC, UL 4248-4, or b) The Standard for Fuseholders Part 5: Class G, UL 4248-5, or c) The Standard for Fuseholders Part 6: Class H, UL 4248-6, or d) The Standard for Fuseholders Part 8: Class J, UL
34、4248-8, or e) The Standard for Fuseholders Part 9: Class K, UL 4248-9, or f) The Standard for Fuseholders Part 11: Type C (Edison Base) and Type S Plug Fuse, UL 4248-11, or g) The Standard for Fuseholders Part 12: Class R, UL 4248-12, or h) The Standard for Fuseholders Part 15: Class T, UL 4248-15.
35、3.3 Fuses 3.3.1 Fuses shall comply with the Standard for Low-Voltage Fuses Part 1: General Requirements, UL 248-1, and: a) The Standard for Low-Voltage Fuses Part 2: Class C Fuses: UL 248-2, or b) The Standard for Low-Voltage Fuses Part 3: Class CA and CB Fuses: UL 248-3, or c) The Standard for Low-
36、Voltage Fuses Part 4: Class CC Fuses: UL 248-4, or d) The Standard for Low-Voltage Fuses Part 5: Class G Fuses: UL 248-5, or e) The Standard for Low-Voltage Fuses Part 6: Class H Non-Renewable Fuses: UL 248-6, or f) The Standard for Low-Voltage Fuses Part 7: Class H Renewable Fuses: UL 248-7, or g)
37、The Standard for Low-Voltage Fuses Part 8: Class J Fuses: UL 248-8, or h) The Standard for Low-Voltage Fuses Part 9: Class K Fuses: UL 248-9, or JUNE 19, 2013 UL 379 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL i) The Standard for Low-Vo
38、ltage Fuses Part 10: Class L Fuses: UL 248-10, or j) The Standard for Low-Voltage Fuses Part 11: Plug Fuses: UL 248-11, or k) The Standard for Low-Voltage Fuses Part 12: Class R Fuses: UL 248-12, or l) The Standard for Low-Voltage Fuses Part 15: Class T Fuses: UL 248-15, or 3.4 Printed wiring boards
39、 3.4.1 Printed wiring boards shall comply with the Standard for Printed-Wiring Boards, UL 796. A printed wiring board shall have a temperature rating corresponding to the maximum temperature on the board during the Heating Test, Section 23. Unless wholly in a Class 2 circuit, it shall comply with th
40、e direct support of live parts requirements in UL 796. 3.5 Terminal blocks 3.5.1 Terminal blocks shall comply with: a) The Standard for Terminal Blocks, UL 1059, or b) The Standard for Low-Voltage Switchgear and Controlgear Part 7-1: Ancillary Equipment Terminal Blocks for Copper Conductors, UL 6094
41、7-7-1, or c) The Standard for Low-Voltage Switchgear and Controlgear Part 7-2: Ancillary Equipment Protective Conductor Terminal Blocks for Copper Conductors, UL 60947-7-2, or d) The Standard for Low-Voltage Switchgear and Controlgear Part 7-3: Ancillary Equipment Safety Requirements for Fuse Termin
42、al Blocks, UL 60947-7-3. The UL 60947-7-x Standards are used in conjunction with the Standard for Low-Voltage Switchgear and Controlgear Part 1: General Rules, UL 60947-1. 3.5.2 Terminal blocks shall be suitable for the wire size, type (solid or stranded), conductor material (copper or aluminum), vo
43、ltage and current of the intended use. 3.5.3 Terminal blocks intended for eld wiring shall comply with the Standard for Wire Connectors, UL 486A-486B, or the Standard for Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors, UL 486E. JUNE 19, 2013 UL 379 8UL COPYRIGHTED MATERIAL
44、 NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.6 Wire connectors 3.6.1 Wire connectors shall be suitable for the wire size, type (solid or stranded), conductor material (copper or aluminum), number of conductors terminated, and the voltage and current of the in
45、tended use. They shall be applied per the installation instructions of the wire connector manufacturer. 3.6.2 Wire connectors shall comply with the Standard for Wire Connectors, UL 486A-486B, or the Standard for Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors, UL 486E 3.7 Q
46、uick-connect wire connectors 3.7.1 Quick-connect type wire connectors shall be suitable for the wire size, type (solid or stranded), conductor material (copper or aluminum), number of conductors terminated, and the voltage and current of the intended use. They shall be applied per the installation i
47、nstructions of the wire connector manufacturer. 3.7.2 Quick-connect type wire connectors shall comply with the Standard for Electrical Quick-Connect Terminals, UL 310. CONSTRUCTION 4 Output Circuit Isolation 4.1 Each output circuit shall be electrically isolated from the power unit supply circuit. E
48、ach output circuit shall not be bonded to the supply circuit equipment grounding conductor or to dead metal bonded to the supply circuit equipment grounding conductor. 4.2 Where a transformer is being used to provide isolation, the primary and secondary windings shall be: a) Separated by a shield of
49、 copper that is at least 0.002 inch (0.051 mm) thick or brass minimum 0.005 inch (0.127 mm); or b) Comply with the Standard for Low-Voltage Transformers Part 3: Class 2 and Class 3 Transformers, UL 5085-3; or c) Comply with the Standard for Class 2 Power Units, UL 1310. 4.3 A connection shall be made between the shield and ground by means of a bonding lead sized at least as large as the conductor used to supply the primary winding magnet wire, and shall be no sma
