1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1310 Class 2 Power Units STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED F
2、OR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Class 2 Power Units, UL 1310 Sixth Edition, Dated August 26, 2011 Summary of Topics This revision of ANSI/UL 1310 includes the following changes in requirements: Exception to the maximum voltage requirement
3、s for a power supply in a no-load condition Clarication of spacing requirements on a semiconductor device The revised requirements are substantially in accordance with Proposal(s) on this subject dated October 21, 2016. Text that has been changed in any manner or impacted by ULs electronic publishin
4、g 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, or otherwise without prior permission of UL. UL provides t
5、his 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, consequential, indirect or similar damages, including loss of pro
6、ts, 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 liability for any damage ever exceed the price paid for this S
7、tandard, 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 reasonable attorneys fees) resulting from any error or devi
8、ation introduced while purchaser is storing an electronic Standard on the purchasers computer system. FEBRUARY 1, 2017 UL 1310 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 1, 2017 UL 1310 tr2 No Text on This PageUL COPYRIGHTED
9、 MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 26, 2011 (Title Page Reprinted: February 1, 2017) 1 UL 1310 Standard for Class 2 Power Units The rst and second editions were titled Standard for Direct Plug-In Transformer Units. First Edition May, 1
10、981 Second Edition September, 1986 Third Edition August, 1992 Fourth Edition July, 1994 Fifth Edition May, 2005 Sixth Edition August 26, 2011 This ANSI/UL Standard for Safety consists of the Sixth Edition including revisions through February 1, 2017. The most recent designation of ANSI/UL 1310 as an
11、 American National Standard (ANSI) occurred on January 30, 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 Pr
12、oposal Request in ULs On-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 thos
13、e Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 1310-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 26, 2011 CLASS 2 POWER UNITS - UL 1310 2 No Text on This Pa
14、geUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 Components .8 3 Units of Measurement .9 4 Undated References 9 5 Glossary .9 6 Terminology .11 CONSTRUCTION 7 Mechanical Assembly 11 8 Enclosure .18 9 Prote
15、ction Against Corrosion 19 10 Switches 19 11 Protective Devices .20 12 Components 21 13 Coil Insulation .22 13.1 General .22 13.2 Insulation for transformers 22 14 Input Connections .25 14.1 Direct plug-in units .25 14.2 Cord-connected units 26 14.3 DC input units 27 15 Output Connections .27 15.1 G
16、eneral .27 15.2 Output wiring .28 15.3 Output terminals 28 15.4 Output connectors .29 15.5 Bushings .30 16 Accessibility of Live Parts 30 16.1 General 30 16.2 Live parts other than exposed wiring terminals 33 16.3 Exposed wiring terminals .35 17 Live Parts 35 18 Strain Relief 36 19 Internal Wiring 3
17、6 20 Separation of Circuits 37 21 Insulating Materials 37 22 Printed-Wiring Boards 37 23 Grounding 38 23.1 General 38 23.2 Bonding conductor 39 24 Spacings .39 AUGUST 26, 2011 CLASS 2 POWER UNITS - UL 1310 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMI
18、SSION FROM UL PERFORMANCE 25 General 42 26 Leakage Current Test 45 27 Leakage Current Test and Dielectric Voltage Withstand Test After Humidity Exposure .47 28 Maximum Output Voltage Test 48 29 Maximum Input Test .48 30 Output Current and Power Test .48 30.1 General .48 30.2 Inherently limited 49 30
19、.3 Not inherently limited 50 31 Calibration of Overcurrent Protection Devices Test 51 32 Full-Load Output Current Test 51 33 Normal Temperature Test 52 34 Dielectric Voltage Withstand Test 56 34.1 General .56 34.2 Induced potential 57 35 Endurance Test on Overcurrent- and Overtemperature-Protective
20、Devices .57 36 Overload and Endurance Tests on Switches and Controls 58 37 Overload Test on Secondary Switches .58 38 Operation Test 59 39 Abnormal Tests .59 39.1 General .59 39.2 Output loading 60 39.3 Output loading alternate method 61 39.4 Transformer burnout .62 39.5 Reverse polarity .62 39.6 Sw
21、itch position 63 39.7 Component breakdown 63 39.8 Printed-wiring board abnormal operation test .63 39.9 Backfeed protection .64 40 Tests on Insulating Materials .65 41 Strain Relief Test 66 42 Push-Back Relief Test .66 43 Direct Plug-In Blade Secureness Test 67 44 Direct Plug-In Security of Input Co
22、ntacts Test .67 44.1 General .67 44.2 Removable, folding, and retractable blade units 67 45 Security of Output Connectors Test .68 46 Abuse Tests 69 46.1 General .69 46.2 Impact on direct plug-in units .69 46.3 Impact on cord connected units .71 46.4 Rod pressure on direct plug-in units .71 46.5 Res
23、istance to crushing on direct plug-in units .71 47 Bonding Conductor Test .72 MANUFACTURING AND PRODUCTION TESTS 48 Dielectric Voltage Withstand Test .72 49 Grounding Continuity Test 74 AUGUST 26, 2011 CLASS 2 POWER UNITS - UL 1310 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
24、DISTRIBUTION WITHOUT PERMISSION FROM UL RATING 50 General 74 MARKING 51 General 75 52 Cautionary and Warning Markings .76 53 Application of Labeling .78 INSTRUCTIONS 54 Instruction Manual 78 OUTDOOR USE 55 General 79 56 Enclosures .79 57 Protection Against Corrosion 80 58 Gaskets 83 59 Supply Connec
25、tions .83 60 Output Connections and Wiring .84 61 Spacings .84 62 Accessibility of Live Parts 85 63 Ground-Fault Circuit-Interrupters 85 64 Performance 86 64.1 General .86 64.2 Abuse tests .86 64.3 Rain test .86 64.4 Standing water immersion test 90 65 Markings .90 66 Instructions .91 PERMANENTLY-CO
26、NNECTED UNITS FOR CONNECTION TO A WIRING SYSTEM 67 General 92 68 Construction .93 69 Wiring Terminals and Leads 94 69A Strain Relief Test .94A 70 Markings 95 71 Installation Instructions .96 PERMANENTLY-CONNECTED UNITS FOR INSTALLATION IN AN OUTLET BOX 71A General .96A 71B Construction 96A 71C Polym
27、eric Enclosures 96B 71D Spacings .96B 71E Performance 96B 71E.1 General .96B 71E.2 Assembly test 96C 71F Installation Instructions 96D 71G User Instructions 96D OCTOBER 11, 2013 CLASS 2 POWER UNITS - UL 1310 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PER
28、MISSION FROM UL 71H Markings .96E POWER UNITS FOR INSTALLATION IN AIR-HANDLING SPACES 72 General 96E 73 Marking 97 POWER UNITS SUPPLIED FROM INFORMATION TECHNOLOGY EQUIPMENT DATA PORTS 74 General 97 75 Glossary .97 76 Supply Connections .98 77 Enclosure 98 78 Performance 98 78.1 General .98 78.2 Abn
29、ormal temperature test 99 78.3 Strain relief test 99 79 Markings .99 80 Instructions 100 FLUSH DEVICE COVER PLATES WITH INTEGRAL POWER SUPPLY 81 General 100 82 Construction .100 83 Polymeric Enclosures .101 84 Spacings 101 85 Congurations .102 86 Class 2 Output Power Supply Testing 102 87 Assembly T
30、est .103 88 Installation Instructions 104 89 Markings 104 APPENDIX A Standards for ComponentsA1 DECEMBER 12, 2014 CLASS 2 POWER UNITS - UL 1310 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cove
31、r indoor and outdoor use Class 2 power supplies and battery chargers. These units utilize an isolating transformer and may incorporate components to provide an alternating- or direct-current output. Each output provides Class 2 power levels in accordance with the National Electrical Code, ANSI/NFPA
32、70. Maximum output voltage does not exceed 42.4 V peak for alternating current, 60 V for continuous direct current. These products are intended primarily to provide power to low voltage, electrically operated devices. These requirements apply to: a) Portable and semipermanent mounted direct plug-in
33、units provided with 15 A blade congurations for use on nominal 120 or 240 V alternating current branch circuits with a maximum potential of 150 V to ground; b) Cord- and plug-connected units provided with a 15 or 20 A attachment plug conguration for use on nominal 120 or 240 V alternating current br
34、anch circuits with a maximum potential of 150 V to ground; and c) Units permanently connected to the input supply for use on nominal 600 V or less alternating or direct current branch circuit. Direct plug-in and cord-connected units may also be provided with an integral cigarette lighter connector a
35、ssembly, or a direct current input jack for being powered from a vehicle battery adapter or from a data port associated with information technology equipment. These units utilize an isolating transformer and may incorporate components to provide an alternating- or direct-current output. Each output
36、provides Class 2 power levels in accordance with the National Electrical Code, ANSI/NFPA 70. Maximum output voltage does not exceed 42.4 V peak for alternating current, 60 V for continuous direct current. These products are intended primarily to provide power to low voltage, electrically operated de
37、vices. 1.2 These requirements cover direct plug-in and cord-connected products whose input power does not exceed 660 W under any possible condition of output loading. 1.3 These requirements do not cover the effect that a power unit may have on the equipment or system to which it is connected. 1.4 A
38、product marked for a specic end-use involving additional considerations may be subject to additional requirements found in the applicable end-product standard. See 51.4. Examples include considerations related to: a) Mechanical risks such as those presented by tools; b) Build up of static charges su
39、ch as those of radio equipment with external antennae connections; c) Special shock limits such as those for medical equipment; and d) Fire risks such as those posed by decorative lighting products. AUGUST 26, 2011 CLASS 2 POWER UNITS - UL 1310 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REP
40、RODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.5 These requirements do not cover products intended to charge batteries for starter motors used to start engines. Products of this type are covered by the Standard for Battery Chargers for Charging Engine-Starter Batteries, UL 1236. 1.6 These re
41、quirements cover Class 2 products, as dened in this standard, intended for use with toys. Products of this type shall also comply with the Standard for Toy Transformers, UL 697. 1.7 These requirements do not cover products with outputs other than Class 2, nor battery chargers intended to charge batt
42、eries employed in wheel chairs or similar types of mobility aids. Products of this type are covered by the Standard for Power Units Other Than Class 2, UL 1012. 1.8 Products without a rectier may be covered by the Standard for Low Voltage Transformers Part 1: General Requirements, UL 5085-1, and the
43、 Standard for Low Voltage Transformers Part 3: Class 2 and Class 3 Transformers, UL 5085-3. 1.9 These requirements do not cover products powered solely by a dc source. Products of this type are covered by the Standard for Power Converters/Inverters and Power Converter/Inverter Systems for Land Vehic
44、les and Marine Craft, UL 458, or by other requirements appropriate for the intended application. 1.10 These requirements do not cover products intended for supplying low voltage landscape lighting. Products of this type are covered by the Standard for Low Voltage Landscape Lighting Systems, UL 1838.
45、 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 Appendix A for a list of standards covering components used in the products covered by this standard. 2.2 A component is not required to comply w
46、ith 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, or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the inte
47、nded 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 be used only under those specic co
48、nditions. AUGUST 26, 2011 CLASS 2 POWER UNITS - UL 1310 8UL 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 in parentheses are explanatory or approximate i
49、nformation. 3.2 Unless otherwise stated, values of current and voltage are rms. 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 For the purpose of this standard, the following denitions shall apply: 5.2 BONDING CONDUCTOR A conductor by which dead metal parts are bonded (connected) to the grounding means. 5.3 CLASS2Asource having limited voltage
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