1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1447 Electric Lawn MowersUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC
2、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electric Lawn Mowers, UL 1447 Fifth Edition, Dated August 1, 2011 Summary of Topics This revision to UL 1447 is being issued to remove the reference to the removal of Thrown Object Test in Section 69 and maintain ANSI B71.1 T
3、hrown Object test. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publicatio
4、n or the date on which the changed requirement becomes effective. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated December 13, 2013. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitte
5、d 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 tness for any
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7、s 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 electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and a
8、gainst 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. The requirements in this Standard are now in effect, except for
9、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 that have been revised and that have a future effective date are located after the Standard, and are pr
10、eceded by a SUPERSEDED REQUIREMENTS notice. DECEMBER 13, 2013 UL 1447 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 13, 2013 UL 1447 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DIS
11、TRIBUTION WITHOUT PERMISSION FROM UL AUGUST 1, 2011 (Title Page Reprinted: December 13, 2013) 1 UL 1447 Standard for Electric Lawn Mowers First Edition May, 1977 Second Edition September, 1988 Third Edition June, 1994 Fourth Edition May, 2006 Fifth Edition August 1, 2011 This ANSI/UL Standard for Sa
12、fety consists of the Fifth Edition including revisions through December 13, 2013. The most recent designation of ANSI/UL 1447 as an American National Standard (ANSI) occurred on December 13, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effecti
13、ve date information. 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-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Ne
14、ither 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 the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 1447-2013UL COPYRIGHTED
15、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL 1447 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PART 1 ALL LAWN MOWERS I
16、NTRODUCTION 1 Scope .9 2 Units of Measurement .9 3 Undated References 9 4 Glossary 10 CONSTRUCTION 5 General .15 5.2 Attachment plugs, receptacles, connectors, and terminals 16 5.3 Batteries .17 5.4 Boxes and raceways .17 5.5 Capacitors and lters 18 5.6 Controls 18 5.7 Cords, cables, and internal wi
17、ring .21 5.8 Cord reels 22 5.9 Film-coated wire (magnet wire) 22 5.10 Gaskets, seals and tubing .22 5.11 Ground-fault, arc-fault, and leakage current detectors / interrupters .22 5.12 Insulation systems 23 5.13 Light sources and associated components 23 5.14 Marking and labeling systems 23 5.15 Moto
18、rs and motor overload protection .24 5.16 Overcurrent protection 27 5.17 Polymeric materials and enclosures 27 5.18 Printed-wiring boards .28 5.19 Semiconductors and small electrical and electronic components .28 5.20 Supplemental insulation, insulating bushings, and assembly aids .29 5.21 Switches
19、29 5.22 Transformers 30 5.23 Valves (electrically operated) and solenoids .30 6 Frame and Enclosure 31 6.1 General 31 6.2 Metallic enclosures 32 6.3 Polymeric enclosures 32 6.4 Handles 32 6.5 Protection against corrosion 34 7 Accessibility of Live Parts .34 8 Accessibility of Moving Parts 38 9 Mecha
20、nical Assembly 38 9.1 General 38 9.2 Lawn mowers shipped partially disassembled .40 10 Handles .41 11 Rotating Parts 41 12 Supply Connections .41 12.1 Power-supply cord 41 AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL 1447 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION W
21、ITHOUT PERMISSION FROM UL 12.2 Cord set 42 12.3 Flexible cord .42 12.4 Attachment plug 42 12.5 Strain relief 43 12.6 Bushings 43 13 Live Parts 43 14 Internal Wiring 44 14.1 General .44 14.2 Splices and connections 45 15 Electrical Insulation .46 16 Motors .47 17 Switches and Controls .47 18 Controls
22、 End Product Test Parameters 48 18.1 General .48 18.2 Auxiliary controls .48 18.3 Operating controls (regulating controls) .48 18.4 Protective controls (limiting controls) 50 18.5 Controls using a temperature sensing device 52 19 Lampholders .52 20 Capacitors .52 21 Printed-Wiring Boards .53 22 Spac
23、ings 53 23 Grounding .55 PERFORMANCE 24 General 56 25 Leakage Current Test .56 26 Starting Current Test 59 27 Continuity of Ground Connection Test .59 28 Input Test 59 29 Impact Test 60 30 Temperature Test .61 31 Dielectric Voltage-Withstand Test .65 32 Resistance to Moisture Tests .65 32.1 High hum
24、idity 65 32.2 Water spray .66 33 Operation Tests 69 33.1 Blade stopping time after long term cycling 69 33.2 Peripheral speed .69 33.3 Direction 69 33.4 Operation indicator .69 33.5 Sound level 70 34 Abnormal Operation Test 70 35 Handle Durability Test .71 36 Attachment Plug Test .71 37 Strain Relie
25、f Test .72 37.1 Pull .72 37.2 Torque 73 38 Push-Back Relief Test .73 39 Cord Flexing Test .73 40 Pressure Pad Test 75 41 Switch and Control Tests 75 AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL 1447 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM
26、UL 41.1 General .75 41.2 Locked rotor test .75 41.3 Reversing switch test .76 42 Capacitor Test 77 43 Accelerated Aging Test 77 44 Permanency of Marking Tests 78 44.1 General .78 44.2 Oven aging test 78 44.3 Immersion test .79 44.4 Standard atmosphere test .79 45 Polymeric Materials Other Than HB .7
27、9 45.1 Mold stress evaluation 79 45.2 Resistance to impact test 80 45.3 Abnormal operation tests 80 45.4 Flame resistance test .81 46 Polymeric Materials Classied HB 81 46.1 General .81 46.2 Mold-stress evaluation 82 46.3 Resistance to impact test 82 46.4 Overload test 82 46.5 Flame test .83 46.6 Re
28、sistance to hot-wire ignition test .83 46.7 High-current arc ignition test .83 MANUFACTURING AND PRODUCTION TESTS 47 Production-Line Dielectric Voltage Withstand Test 84 47.1 Other than double-insulated mowers 84 47.2 Double-insulated mowers 85 48 Production-Line Continuity of Ground Test .85 RATING
29、 49 General 86 MARKINGS 50 General 86 51 Identication and Rating .86 52 Fuses .87 53 Switches and Controls .87 54 Cautionary Markings 87 INSTRUCTIONS 55 Instruction Manual 90 55.1 General .90 55.2 Safety instructions 91 AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL 1447 5UL COPYRIGHTED MATERIAL NOT AUTHO
30、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PART 2 ROTARY LAWN MOWERS GENERAL 56 Scope .95 CONSTRUCTION 57 Mechanical Assembly .96 58 Switches and Controls .96 PERFORMANCE 59 General 96 60 Input Test 97 61 Impact Test 97 62 Out-of-Balance Test .99 63 Blade Stopping Time
31、 99 64 Torque Test .100 65 Structural Integrity Test .100 66 Foot Contact Test .100 67 Obstruction Test .104 68 Movable Guard Test .104 69 Thrown Object Test 106 PART 3 DOUBLE-INSULATED LAWN MOWERS GENERAL 70 Scope 109 CONSTRUCTION 71 Insulation .109 72 Supply Connections 110 72.1 Power supply cord
32、110 72.2 Strain relief .111 72.3 Bushings .111 73 Grounding 111 74 Internal Wiring .111 75 Capacitors 113 76 Motors .113 76.1 Brush caps .113 76.2 Commutators and armature end-turns .113 76.3 Switches .114 76.4 Brush holders .115 77 Spacings .115 AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL 1447 6UL COP
33、YRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 78 Leakage Current .117 79 Insulation Resistance Test 117 80 Dielectric Voltage-Withstand Test 118 81 Resistance to Impact Test 118 82 Resistance to Heat Test 119 83 Overload Test .120 83
34、.1 General 120 83.2 Test terminated lawn mower does not operate 124 83.3 Test terminated lawn mower still operates 125 84 Armature Investigation .125 MARKINGS 85 Details .126 SUPPLEMENT SA - BATTERY-OPERATED LAWN MOWERS GENERAL SA1 Scope SA1 SA2 Glossary SA1 CONSTRUCTION SA3 Battery Enclosure SA2 SA
35、3.1 General SA2 SA3.2 Enclosures for vented batteries .SA3 SA4 Batteries, Battery Leads, And Connections .SA3 SA5 Spacings .SA5 SA6 Battery Charger .SA7 SA7 Overload Tests on Isolating Transformers SA8 SA8 Battery Cables SA9 SA9 Switching Devices .SA9 SA10 Overcurrent Protection .SA10 SA11 Enclosure
36、 Ventilation SA10 PERFORMANCE SA12 Charging Input Test SA10 SA13 Temperature Test .SA11 SA14 Dielectric Voltage Withstand Test SA12 SA15 Battery Enclosure Test .SA12 SA16 Slosh Test SA12 SA17 Battery Overll and Spillage Test SA13 SA18 Abnormal Operation Tests SA13 SA19 Switch Test .SA14 SA20 Battery
37、 Compartment Ventilation Test SA15 AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL 1447 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKINGS SA21 Details .SA15 INSTRUCTIONS SA22 Instruction Manual .SA16 AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL
38、 1447 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PART 1 ALL LAWN MOWERS INTRODUCTION 1 Scope 1.1 These requirements cover cord-connected electrically operated lawn mowers rated 250 volts or less to be employed in accordance with the Na
39、tional Electrical Code, ANSI/NFPA 70. These requirements also cover battery-operated lawn mowers. 1.2 These requirements do not cover equipment for use in hazardous locations as dened in the National Electrical Code, ANSI/NFPA 70. 1.3 These requirements do not cover sulky-type lawn mowers, garden tr
40、actors or their attachments, ail mowers, sickle-bar mowers, robotic lawn mowers, or lawn mowers intended for commercial use. 1.4 In addition to the requirements in this standard, a lawn mower shall comply with the Safety Specication for Consumer Turf-Care Equipment Walk-Behind Mowers and Ride-On Mac
41、hines with Mowers, ANSI B71.1, and with the Safety Standard for Walk-Behind Power Lawn Mowers, 16 CFR 1205. 1.5 In the text, a requirement that applies only to a rotary or other type of lawn mower is identied by a specic reference in that requirement to the specic lawn mower involved. Absence of the
42、 specic reference, or use of the term lawn mower, indicates that the requirement applies to all of the lawn mowers covered in this standard. 2 Units of Measurement 2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3 Undated R
43、eferences 3.1 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. AUGUST 1, 2011 ELECTRIC LAWN MOWERS - UL 1447 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
44、 DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Glossary 4.1 For the purpose of this Standard the following denitions apply. 4.2 ACCESSIBLE PART A part located so that it can be contacted by a person, either directly or by means of a probe or tool, or so that it is not recessed the required distance behi
45、nd an opening. See Section 7, Accessibility of Live Parts. 4.3 APPLIANCE COUPLER A single-outlet, female contact device for attachment to a exible cord as part of a detachable power-supply cord to be connected to an appliance inlet (motor attachment plug). 4.4 APPLIANCE INLET (Motor Attachment Plug)
46、 A male contact device mounted on an end product appliance to provide an integral blade conguration for the connection of an appliance coupler or cord connector. 4.5 APPLIANCE (FLATIRON) PLUG An appliance coupler type of device having a cord guard and a slot conguration specied for use with heating
47、or cooking appliances. 4.6 BASIC INSULATION The insulation applied to live parts to provide basic protection against electric shock. 4.7 BLADE Any rigid or semi-rigid device or means that is intended to cut grass during mowing operations and includes all blades of a multi-blade mower. 4.8 BLADE-TIP
48、CIRCLE The path described by the outermost point of the blade as it moves about its axis. 4.9 CATCHER ASSEMBLY A part or combination of parts on a lawn mower that provides a means of collecting grass clippings and debris. 4.10 COMPONENT A device or fabricated part of the appliance covered by the sco
49、pe of a standard dedicated to the purpose. When incorporated in an appliance, equipment 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 thermoplastic or copper, are not considered components. 4.11 CONTROL, AUTOMATIC ACTION A control in which at least one aspect is non-manual. 4.12 CONTROL, AUXILIARY A device or assembly of devices that provides a fu
