UL 751-2016 UL Standard for Safety Vending Machines (Ninth Edition).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 751 Vending Machines STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F

2、URTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Vending Machines, UL 751 Ninth Edition, Dated July 18, 2016 Summary Of Topics The revisions dated August 4, 2016 were issued to incorporate editorial changes including updating incorrect references. All rights

3、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 this Standard as is without warranty of any kind, either expressed

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5、f 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 Standard, regardless of the form of the claim. Users of the electro

6、nic 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 deviation introduced while purchaser is storing an electronic Standard

7、 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 text for requirements tha

8、t have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. AUGUST 4, 2016 UL 751 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 4, 2016 UL 751 tr

9、2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL July 18, 2016 1 UL 751 Standard for Vending Machines The First, Second, and Third editions were titled Standard for Safety for Vending and Amusement Machines. First Editio

10、n December, 1970 Second Edition April, 1974 Third Edition May, 1978 Fourth Edition September, 1985 Fifth Edition May, 1990 Sixth Edition June, 1995 Seventh Edition January, 2010 Eighth Edition July, 2012 Ninth Edition July 18, 2016 This ANSI/UL Standard for Safety consists of the Ninth Edition. The

11、most recent designation of ANSI/UL 751 as an American National Standard (ANSI) occurred on July 18, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, or Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time

12、. Proposals should be submitted via a Proposal Request in ULs 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

13、, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 751-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 18, 2016 VENDING MACHIN

14、ES - UL 751 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 Units of Measurement .7 3 Undated References 7 4 Terminology 7 5 Glossary .8 CONSTRUCTION 6 General .11 7 Nonmetallic Parts

15、12 8 Nonmetallic Materials .12 9 Nonmetallic Material Ignition Sources Separation 12 10 Nonmetallic Material Application and Location 14 11 Barriers 14 12 Frame and Enclosure .14 13 Mechanical Assembly .19 14 Accessibility of Live Parts 20 15 Protection Against Corrosion .23 16 Supply Connections Fo

16、r Cord Connected Vending Machines .25 16.1 Cords and plugs .25 16.2 Strain relief 27 17 Supply Connections for Permanently Connected Vending Machines 27 17.1 General .27 17.2 Field-wiring compartments .27 17.3 Field-wiring terminals and leads 28 17.4 Equipment grounding .30 18 Current-Carrying Parts

17、 30 19 Insulating Material 31 19.1 Electrical insulation .31 19.2 Thermal insulation 32 20 Internal Wiring 32 20.1 General .32 20.2 Wires .33 20.3 Routing .35 21 Splices and Connections 35 22 Separation of Circuits .36 23 Heating Elements .36 24 Motors .37 24.1 General .37 24.2 Overload protection .

18、37 24.3 Protective electronic circuits .38 25 Overcurrent Protection 39 25.1 General .39 25.2 Motors and power transformers 41 26 Switches and Controllers 41 27 Remotely Operated Vending Machines 46 28 Capacitors .47 29 Receptacles 48 JULY 18, 2016 VENDING MACHINES - UL 751 3UL COPYRIGHTED MATERIAL

19、NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 30 Batteries and Battery Chargers .48 31 Connectors 49 32 Cooking Equipment .49 33 Electrical Cable, Conduit and Tubing 49 34 Electromagnetic Interference Filters .49 35 Fuseholders 50 36 Lighting Systems .50 36.1 Gen

20、eral .50 36.2 Electric-discharge lighting systems .51 37 Optical Isolators and Semiconductor Devices 52 38 Outlet Boxes, Fittings and Cover Plates .52 39 Power Supplies .53 40 Solar Photovoltaic (PV) Systems .53 41 Information Technology Equipment .54 42 Terminal Blocks 54 43 Transformers .55 44 Wir

21、eways, Auxiliary Gutters and Associated Fittings 55 45 Secondary Circuits 55 46 Spacings 56 46.1 High-voltage circuits 56 46.2 Low-voltage circuits .58 46.3 Alternate spacings clearances and creepage distances .58 47 Grounding .59 48 Accessories 62 49 Coin and Credit Mechanisms .62 PROTECTION AGAINS

22、T INJURY TO PERSONS 50 General 63 50.1 General .63 50.2 Switches and controllers 64 50.3 Lids 64 51 Stability Test .64 52 Risk of Injury to Servicemen .65 53 Pressure Vessels and Parts Subject to Pressure .65 54 Pressure-Relief Devices .67 PERFORMANCE 55 General 68 56 Leakage Current Test .68 57 Inp

23、ut Test 72 58 Temperature Test .72 58.1 General .72 58.2 Maximum normal load 75 59 Dielectric Voltage-Withstand Test .76 60 Abnormal Operation Test 77 61 Resistance to Moisture Tests .77 61.1 Humidity 77 61.2 Water spray .78 62 Thermostat Tests .81 63 Bonding Connection Test 82 64 Metallic Coating T

24、hickness Test 82 JULY 18, 2016 VENDING MACHINES - UL 751 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 65 Overload of Motor Switches or Controllers Test 83 66 Overload and Endurance Test Switching Devices .84 67 Flexing of Internal Wiring

25、 85 68 Strain Relief Test .85 69 Push-Back Strain-Relief Test .86 70 Glass Strength Test .86 70.1 Impact test 86 70.2 Mechanical pressure test 87 71 Glass Component Strength Test 87 72 Accelerated Aging Test of Gaskets .87 73 Permanence of Marking Test .88 73.1 General .88 73.2 Oven-aging test 89 73

26、.3 Immersion test .89 73.4 Standard-atmosphere test .89 74 Tests on Nonmetallic Materials .89 75 Fastener Strength Test 91 76 Protective Electronic Circuit Tests 92 76.1 General .92 76.2 Fault conditions abnormal test .92 76.3 Electromagnetic compatibility (EMC) tests .94 76.4 Programmable component

27、 reduced supply voltage test .95 76.5 Fuse-link test 96 MANUFACTURING AND PRODUCTION TESTS 77 Dielectric Voltage-Withstand Test .97 78 Grounding Continuity Test .99 79 Protective Electronic Circuit Test .99 MARKING 80 General 100 80.1 Permanence 100 80.2 Identication 100 80.3 Installation instructio

28、ns .102 80.4 Accessories 103 80.5 Temperature markings .103 81 Cautionary 104 SUPPLEMENT SA - REQUIREMENTS FOR VENDING MACHINES INTENDED FOR INSTALLATION WITHIN MOTOR FUEL DISPENSING FACILITIES SA1 Scope SA1 SA2 Denitions SA1 SA3 General SA1 SA4 Marking SA2 SA5 Installation and Operating Instruction

29、s SA2 JULY 18, 2016 VENDING MACHINES - UL 751 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX A OPERATING AND PROTECTIVE ( SAFETY CRITICAL ) CONTROL FUNCTIONS (Normative) JULY 18, 2016 VENDING MACHINES - UL 751 6UL COPYRIGHTED MATE

30、RIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover self-contained, payment-accepting, vending machines that vend non-refrigerated products to be employed in accordance with the National Electrical Code, ANSI/NFPA

31、70. Vending machines as covered by this standard are intended for indoor use only, except that they will be investigated for outdoor use or use in a protected location if so designated by the manufacturer. Vending machines may be battery operated. Vending machines may be battery operated and may be

32、provided with a solar photovoltaic (PV) system. Refrigerated sections of vending machines that vend a non-refrigerated product are judged under the requirements for refrigerated vending machines. 1.2 These requirements also cover vending machines intended for installation within motor fuel dispensin

33、g facilities in accordance with Supplement SA, Requirements for Vending Machines Intended for Installation within Motor Fuel Dispensing Facilities, and as dened by the Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A. 1.3 These requirements do not cover sound-recording and repr

34、oducing machines. 2 Units of Measurement 2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3 Undated References 3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpret

35、ed as referring to the latest edition of that code or standard. 4 Terminology 4.1 In the following text, a requirement that does not apply to all of the types of vending machines covered by this standard is identied by a specic reference in that requirement to the type or types of vending machine in

36、volved. Absence of such specic reference or use of the term vending machine indicates that the requirement applies to all types of vending machines unless the context indicates otherwise. 4.2 Unless otherwise specied, values of voltage and current referred to are rms values. JULY 18, 2016 VENDING MA

37、CHINES - UL 751 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5 Glossary 5.1 For the purpose of this standard the following denitions apply. 5.2 BARRIER A partition for isolating high-voltage electrical components, separating ignition sou

38、rces from ammable materials, isolating moving parts and protection of wiring. 5.3 CABINET The part of the equipment that provides physical protection to insulated wiring, enclosures, moving parts, motors, enclosed electrical parts, tubing or other parts that may cause injury to persons. 5.4 CELL The

39、 basic photovoltaic device that generates electricity when exposed to sunlight. 5.5 CHARGE CONTROLLER Equipment that controls dc voltage or dc current, or both, used to charge a battery. 5.6 COMPONENT A device or fabricated part of the vending machine covered by the scope of a safety standard dedica

40、ted to that purpose. If incorporated in a vending machine, a product that is otherwise typically eld installed (e.g. luminaire) is considered to be a component. Unless otherwise specied, materials that compose a device or fabricated part, such as aluminum or copper, are not considered components. Ge

41、nerally, components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under specic, limited conditions, such as certain temperatures not exceeding specied limits. 5.7 CONTROL, OPERATING A device or assembly of devices, the op

42、eration of which starts or regulates the end product during normal operation. For example, a thermostat, the failure of which a thermal cutout/limiter or another layer of protection would mitigate the risk of electric shock, is considered an operating control. Operating controls are also referred to

43、 as regulating controls . Appendix A species control functions that are not considered to result in a risk of re, electric shock, or injury to persons. 5.8 CONTROL, PROTECTIVE A device or assembly of devices, the operation of which is intended to reduce the risk of re, electric shock, or injury to p

44、ersons during normal and reasonably anticipated abnormal operation of the appliance. For example, a thermal cutout/limiter, or any other control/circuit relied upon for normal and abnormal conditions, is considered a protective control. Protective controls are also referred to as limiting controls o

45、r safety controls and are investigated under normal and single-fault conditions. Appendix A species control functions that are considered to result in a risk of re, electric shock, or injury to persons. Such functions may also be dened as safety critical . 5.9 CONVERTER A device that accepts ac or d

46、c power input and converts it to another form of ac or dc power. 5.10 ELECTRONIC COMPONENT A part in which electrical conduction is achieved principally by electrons moving through a vacuum, gas or semiconductor. A metal oxide varistor (MOV) is considered to be an electronic component, but neon indi

47、cators are not. IEC This denition is reproduced from IEC 60335-1, Ed. 5.1 b:2013 with permission of the American National Standards Institute (ANSI) on behalf of the International Electrotechnical Commission. All rights reserved. JULY 18, 2016 VENDING MACHINES - UL 751 8UL COPYRIGHTED MATERIAL NOT A

48、UTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.11 ELECTRONIC DISCONNECTION The de-energizing of a load within an appliance by an electronic device of a circuit. No electro-mechanical component having an air gap, such as a switch, contactor or relay is used to de-ener

49、gize the load. IEC This denition is reproduced from IEC 60335-1, Ed. 5.1 b:2013 with permission of the American National Standards Institute (ANSI) on behalf of the International Electrotechnical Commission. All rights reserved. 5.12 ENCLOSURE The part of the equipment that does one or more of the following: a) Isolates ignition sources; b) Renders inaccessible all or any part(s) of the equipment that may otherwise present a risk of electric shock; or c)