1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1012 Power Units Other Than Class 2 STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT A
2、UTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Power Units Other Than Class 2, UL 1012 Eighth Edition, Dated November 9, 2010 Summary of Topics This revision to ANSI/UL 1012 is being issued to reaffirm approval as an American National Standar
3、d. No changes in requirements are involved. The revisions are substantially in accordance with Proposal(s) on this subject dated February 5, 2016. 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 reserve
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5、ied, 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 prots, lost savings, loss of data, or any other damages arising out of the u
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8、 purchasers computer system. APRIL 8, 2016 UL 1012 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 8, 2016 UL 1012 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMI
9、SSION FROM UL NOVEMBER 9, 2010 (Title Page Reprinted: April 08, 2016) 1 UL 1012 Standard for Power Units Other Than Class 2 The rst through fourth editions were titled the Standard for Power Supplies. First Edition September, 1976 Second Edition September, 1978 Third Edition March, 1982 Fourth Editi
10、on July, 1989 Fifth Edition August, 1992 Sixth Edition June, 1994 Seventh Edition April, 2005 Eighth Edition November 9, 2010 This ANSI/UL Standard for Safety consists of the Eighth Edition including revisions through April 08, 2016. The most recent designation of ANSI/UL 1012 as an American Nationa
11、l Standard (ANSI) occurred on April 4, 2016. 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
12、 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 Standards shall rema
13、in the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 1012-2012 (R2016)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 2 No Text on This Page
14、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .8 2 Components .9 3 Units of Measurement .9 4 Terminology .10 5 Undated References .10 6 Glossary 10 ALL POWER UNITS CONSTRUCTION 7 Frame and Enclosure 12 7.1 Gen
15、eral .12 7.2 Mounting means 17 7.3 Integral meters 18 7.4 Supporting material 18 7.5 Doors and covers .19 7.6 Protection against injury to persons 19 7.7 Modular units .20 8 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts .21 9 Protection of Service Personnel .23 9.1 Gene
16、ral .23 9.2 Mechanical servicing .24 9.3 Electrical servicing .24 10 Assembly .25 11 Protection Against Corrosion 25 12 Supply Connections .26 12.1 Permanently-connected power units 26 12.2 Wiring terminals and leads .27 12.3 Cord-connected power units 29 12.4 Strain relief .31 12.5 Bushings .31 13
17、Output Connections .32 14 Interconnections Between Sections 34 15 Battery Charger Backfeed Protection 35 16 Grounding Connections 35 17 Bonding of Internal Parts .38 17.1 General .38 17.2 Bonding conductor 39 18 Identication for Connection of Grounded Conductors .41 19 Wire Bending Space .42 20 Outp
18、ut Circuit Grounding .47 21 Live Parts 49 22 Internal Wiring 50 22.1 General .50 22.2 Protection of wiring 51 22.3 Electrical connections 51 23 Separation of Circuits 52 NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DIST
19、RIBUTION WITHOUT PERMISSION FROM UL 23.1 Factory wiring .52 23.2 Separation barriers 53 23.3 Field wiring .53 24 Insulating Materials 54 25 Motors .54 26 Transformers .55 26.1 General .55 26.2 Coil insulation .56 27 Resistors 58 28 Switches and Controls .58 29 Overload-Protective Devices 60 30 Fuses
20、 and Fuseholders 61 31 Output Alternating Current Power Circuits 62 32 Lampholders 64 33 Capacitors 64 34 Printed Wiring .64 35 Spacings .65 35.1 General .65 35.2 Alternative Spacings .70 35.3 Insulation liners and barriers 70 36 Control Circuits .73 37 Accessible Signal Circuits 75 38 Class 2 and C
21、lass 3 Output Circuits .76 PERFORMANCE 39 General 76 40 Leakage Current Test 77 41 Power Input Test 80 42 Temperature Test .81 43 Dielectric Voltage Withstand Test 86 43.1 General .86 43.2 Induced potential test 87 43.3 Maximum-voltage measurements 88 44 Tests on Insulating Materials .88 45 Mechanic
22、al Strength Tests for Metal Enclosures 88 46 Strain Relief and Bushing 89 47 Push-Back Relief Test .89 48 Overload of Switches and Controls 89 49 Static Load Test .90 50 Stability Test 90 51 Isolated Limited Energy Circuit Capacity .91 52 Overcurrent Protection Calibration Test 92 53 Neutral to Grou
23、nd Potential Measurement Test .92 54 Abnormal Tests .93 54.1 General .93 54.2 Output short-circuit test 94 54.3 Blocked fan test .94 54.4 Fuse short circuit test 95 54.5 Voltage selector test .95 54.6 Relay and solenoid burnout 95 54.7 Transformer overload tests .95 54.8 Component short- and open-ci
24、rcuit test 96 NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 54.9 Backfeed protection .97 54.10 Autotransformer 97 54.11 Evaluation of reduced spacings on printed-wiring boards .98
25、54.12 Reverse polarity test 99 55 Flanged Bobbin Transformer Abnormal Test 99 56 Capacitor Test .101 57 Bonding Conductor Test 101 58 Hot, Flaming Oil Test .102 MANUFACTURING AND PRODUCTION TESTS 59 Dielectric Voltage Withstand Test 103 60 Grounding Continuity Test .105 MARKING 61 Details .105 61.1
26、Cautionary markings 105 61.2 General markings 107 61.3 Application 112 62 Instructions .113 62.1 General .113 62.2 Battery chargers .114 SPECIFIC POWER UNITS OUTDOOR-USE POWER UNITS 63 General 116 64 Construction .116 64.1 Enclosure 116 64.2 Supply connections .117 64.3 Output connections and wiring
27、 .118 65 Performance 119 65.1 Rain conditioning .119 65.2 Physical properties .122 66 Marking .122 PLUG-IN POWER UNITS 67 General 122 68 Construction .123 69 Performance .123 70 Marking .123 SCHOOL-LABORATORY POWER SUPPLIES 71 General 123 72 Construction .123 72.1 Primary power supply connections 12
28、3 72.2 Grounding .124 72.3 Output terminals .124 73 Performance 124 NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 74 Marking .124 POWER SUPPLIES RATED MORE THAN 10 KILOVOLT-AMPERES
29、 75 General 125 76 Temperature Test 125 77 Dielectric Voltage Withstand Test 125 77.1 General .125 77.2 Induced potential .126 78 Overload Test .126 CLASS 3 OUTPUTS DC, OR AC DERIVED FROM NON-LINEAR SOURCES 79 General 127 80 Construction .127 81 Overcurrent Protection 127 82 Components .127 83 Maxim
30、um Output Voltage Test .128 84 Output Current and Power Test 128 84.1 General .128 84.2 Inherently limited .129 84.3 Not inherently limited .130 85 Calibration of Overcurrent Protection Devices Test .130 86 Component Breakdown .131 87 Markings 131 FOREIGN VOLTAGE ADAPTERS 88 General 131 89 Scope .13
31、1 90 Glossary 132 91 U.S. to Foreign Adapters 132 91.1 Construction .132 91.2 Performance .133 91.3 Electrical ratings .134 91.4 User instructions .134 92 Foreign to U.S. Adapters .135 92.1 Construction .135 92.2 Performance .136 92.3 Electrical ratings .137 92.4 User instructions .137 RECHARGEABLE
32、BATTERIES WITH INTEGRAL CHARGERS 93 Scope 137 94 Glossary 138 95 General .138 96 Construction .138 96.1 Enclosure 138 96.2 Battery 139 96.3 RBPs with a lithium battery .139 96.4 Supply connections .140 96.5 Solar cell protection 140 NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 6UL COPYR
33、IGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 97 Performance 140 97.1 Power input test 140 97.2 Normal temperature test 140 97.3 Solar cell reverse current overload test .141 97.4 Mechanical strength tests .142 98 Markings 142 99 Instructions 142
34、POWER UNITS FOR INSTALLATION IN AIR-HANDLING SPACES 100 Scope .143 101 General .143 102 Marking .143 APPENDIX A Standards for ComponentsA1 NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FRO
35、M UL INTRODUCTION 1 Scope 1.1 These requirements cover portable, stationary, and xed power units having an input rating of 600 volts or less, direct- and alternating- current, with at least one output not marked Class 2, and that are intended to be employed in ordinary locations in accordance with t
36、he National Electrical Code, ANSI/NFPA 70. 1.2 These requirements cover general purpose power supplies and power supplies for uses such as to supply some household appliances, school laboratories, cathodic protection equipment; power supply-battery charger combinations; and industrial equipment, inc
37、luding inverters, divided into two classes those rated 10 kilovolt-amperes or less and those rated more than 10 kilovolt-amperes. 1.3 Power units with all outputs identied as Class 2 are covered under the Standard for Class 2 Power Units, UL 1310. 1.4 These requirements do not cover the following ty
38、pes of battery chargers: a) Battery chargers intended to charge motor-starting batteries as covered by Standard for Battery Chargers for Charging Engine-Starter Batteries, UL 1236; b) Battery chargers for charging industrial batteries which power material handling trucks, tractors, personnel carrier
39、s, and similar motive equipment, as covered by the Standard for Industrial Battery Chargers, UL 1564; c) Chargers or charging functions incorporated into converter or inverters for use in recreational vehicles and boats, as covered by the Standard for Power Converters/Inverters and Power Converter/I
40、nverter Systems for Land Vehicles and Marine Crafts, UL 458; and d) Charge controllers or charging functions incorporated into equipment for use in independent power systems, as covered by the Standard for Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distribut
41、ed Energy Resources, UL 1741. 1.5 A battery charger not wholly within the scope of one of the standards specied in 1.4 shall be investigated to the requirements of this Standard supplemented by the applicable requirements of whichever of the standards in 1.4 is most applicable. 1.6 These requirement
42、s do not cover a power supply for a re-protective or burglary-protective signaling system, electrostatic-air cleaning equipment, recreational vehicles, electric discharge or neon tubing, test equipment for commercial or industrial laboratories; or an appliance or system in which the power supply is
43、used. 1.7 These requirements cover power supplies for centralized ac or dc power systems, including dc power supplies, rectiers, and the like, that form part of these systems. NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O
44、R DISTRIBUTION WITHOUT PERMISSION FROM UL 1.8 A power supply that is intended for use with a specic type of product other than as referenced in 1.2 is investigated under the standard for that end product. 1.9 These requirements do not cover the effect that a power supply may have on an equipment or
45、a system to which it is connected. 1.10 A power system, the primary function of which is maintaining continuity of an alternating power source in case of input power failure, is covered under the Standard for Uninterruptible Power Systems, UL 1778. 2 Components 2.1 Except as indicated in 2.2, a comp
46、onent 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 with a specic requirement that: a) Involves a feature
47、 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 intended conditions of use. 2.4 Specic components are in
48、complete 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 conditions. 3 Units of Measurement 3.1 Values stated w
49、ithout parentheses are the requirement. Values in parentheses are explanatory or approximate information. NOVEMBER 9, 2010 POWER UNITS OTHER THAN CLASS 2 - UL 1012 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Terminology 4.1 Unless otherwise stated, values of current and voltage are root-mean-square (rms). 4.2 The term product as used in these requirements refers to all power units or any part thereof covered by these requirements unless
