1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1594 Sewing and Cutting MachinesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
2、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Sewing and Cutting Machines, UL 1594 Fourth Edition, Dated April 18, 2008 Summary of Topics This revision to UL 1594 is being issued to remove the reference to the withdrawal date of UL 244A and to address universal up
3、keep of UL Standards for Safety. These revisions are considered to be non-substantive and not subject to ULs STP process. 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 v
4、ertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any
5、 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 purpose. In no even
6、t 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 representative has been advised of th
7、e 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 against any loss, exp
8、ense, 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 those paragraphs, se
9、ctions, 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 preceded by a SUPERSED
10、ED REQUIREMENTS notice. MARCH 18, 2015 UL 1594 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 18, 2015 UL 1594 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSI
11、ON FROM UL APRIL 18, 2008 (Title Page Reprinted: March 18, 2015) 1 UL 1594 Standard for Sewing and Cutting Machines First Edition May, 1984 Second Edition January, 1995 Third Edition April, 2001 Fourth Edition April 18, 2008 This UL Standard for Safety consists of the Fourth Edition including revisi
12、ons through March 18, 2015. 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
13、 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 the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NO
14、T AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 18, 2008 SEWING AND CUTTING MACHINES - UL 1594 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .6 2 Ge
15、neral 6 2.1 Components .6 2.2 Units of measurement .7 2.3 Undated references .7 3 Glossary .7 CONSTRUCTION 4 General 8 5 Frame and Enclosure 8 5.1 General .8 5.2 Cast and sheet metal .9 5.3 Polymeric enclosures .9 6 Adhesives Used to Secure Parts .10 7 Mechanical Assembly 10 8 Protection Against Cor
16、rosion 11 9 Accessibility of Uninsulated Live Parts and Magnet Wire 11 9.1 General 11 9.2 Accessibility of parts requiring servicing 15 10 Supply Connections .15 10.1 Cord-connected products 15 10.2 Permanently-connected products .20 11 Current-Carrying Parts 22 12 Insulating Materials .22 13 Intern
17、al Wiring 22 13.1 Mechanical protection .22 13.2 Splices and connections 24 13.3 Secondary circuits 24 13.4 Printed-wiring boards .25 13.5 Separation of circuits .25 14 Capacitors .26 15 Grounding .27 15.1 General .27 15.2 Grounding identication .28 16 Lampholders .29 17 Motors .30 17.1 Construction
18、 .30 17.2 Brush wearout .30 17.3 Overload protection .30 18 Overload- or Thermal-Protective Devices 32 19 Receptacles 32 20 Switches and Controls .33 21 Secondary Circuits 33 22 Spacings 35 23 Alternate Spacings Clearances and Creepage Distances 37 APRIL 18, 2008 SEWING AND CUTTING MACHINES - UL 159
19、4 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PROTECTION AGAINST INJURY TO PERSONS 24 General 39 25 Sharp Edges .40 26 Enclosures and Guards 40 27 Materials .41 28 Rotating or Moving Parts 41 29 Switches, Controls, and Interlocks 42 30
20、Stability 43 31 Strength of Mounting 43 32 Strength of Handles .43 33 Markings .43 PERFORMANCE 34 General 44 35 Leakage Current Test .44 36 Leakage Current Following Humidity Conditioning 48 37 Starting Current Test 48 38 Input Test 49 39 Normal Temperature Test 49 39.1 General .49 39.2 Maximum norm
21、al load 52 40 Dielectric Voltage-Withstand Test .53 40.1 General .53 40.2 Primary circuits 54 40.3 Secondary circuits 54 40.4 Printed-wiring assemblies .54 41 Switches and Controls Test 55 42 Strain Relief Test .55 43 Push-Back Relief Test .56 44 Abnormal Operation Tests .56 44.1 General .56 44.2 El
22、ectronic components 57 44.3 Resistance speed controllers 57 44.4 Transformers 58 45 Operational Test 58 46 Permanence of Marking .59 47 Overspeed Test 59 48 Stability Test .59 49 Strength of Mounting Test .60 50 Strength of Handles Test 60 51 Resistance of Grounding Path 60 52 Foot Controller Crushi
23、ng Resistance 61 53 Metal Foot Controller Impact .62 MANUFACTURING AND PRODUCTION TESTS 54 Dielectric Voltage-Withstand Test .63 55 Grounding Continuity Test .64 56 Polarization Continuity Test 65 APRIL 18, 2008 SEWING AND CUTTING MACHINES - UL 1594 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE
24、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL RATING 57 Details .65 MARKING 58 Details .65 58.1 General .65 58.2 Products intended to be permanently connected .67 58.3 Components .68 INSTRUCTION MANUALS 59 General 68 60 Instructions Pertaining to a Risk of Fire, Electric Shock, or Injury
25、 to Persons .69 61 Grounding/Double-Insulation Instructions 73 62 Installation Instructions 76 63 Operating Instructions .76 64 Users Maintenance Instructions 76 APPENDIX A Standards for ComponentsA1 APRIL 18, 2008 SEWING AND CUTTING MACHINES - UL 1594 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR
26、THER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover both household and industrial sewing and cutting machines to be employed in accordance with the National Electrical Code. 1.2 These requirements also cover small utilization products, such
27、as vibrator-powered scissors where motion of an operating part is produced by electrical means. 1.3 These requirements do not cover equipment rated more than 600 V; nor do they cover products involving universal motors rated more than 250 V. 1.4 These requirements also cover textile equipment for us
28、e in ordinary locations but do not cover equipment intended for use in hazardous locations such as certain textile processing equipment, and yarn handling equipment. 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply with the r
29、equirements for that component. See Appendix A for a list of standards covering components generally used in the products covered by this standard. 2.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of t
30、he component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.1.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.1.4 Specic components are incomplete in construction features or restricted in
31、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. APRIL 18, 2008 SEWING AND CUTTING MACHINES - UL 1594 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED
32、FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.2.2 Unless otherwise indicated, all voltage and current values mentioned in th
33、is Standard are root-mean-square. 2.3 Undated references 2.3.1 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. 3 Glossary 3.1 For the purpose of this standard the following de
34、nitions apply. 3.2 AUTOMATICALLY CONTROLLED PRODUCT A product is determined to be automatically controlled if it complies with one or more of the following conditions: a) The repeated starting of the product is independent of any manual control after one complete cycle of operation, after which some
35、 form of limit device opens the circuit. b) During any single preset cycle of operation, the motor is caused to stop and restart. c) When the product is energized, the initial starting of the motor may be intentionally delayed beyond intended, conventional starting. d) For a product employing a moto
36、r with a separate starting winding, during any single predetermined cycle of operation, automatic changing of the mechanical load reduces the motor speed sufficiently to reestablish starting-winding connections to the supply circuit. 3.3 DEAD METAL PART A metal or other electrically conductive part,
37、 accessible or inaccessible, that is not conductively connected to a live part. 3.4 FIRMWARE Computer program contained permanently in a hardware device as read-only memory. 3.5 HAND-HELD PRODUCT, HAND-GUIDED PRODUCT A portable product that during intended use is contacted by the hand of the user fo
38、r purposes of electrical or physical control but not for complete support. 3.6 HAND-SUPPORTED PRODUCT A product such as an electric scissor, that is physically supported by any part of the user during the performance of its intended functions. 3.7 ISOLATING TRANSFORMER A transformer having one or mo
39、re output windings electrically insulated from all other windings. 3.8 LINE-VOLTAGE CIRCUIT A circuit involving a potential of not more than 600 V and having circuit characteristics in excess of those of a low-voltage circuit. 3.9 LIVE PART A part energized with respect to earth or energized with re
40、spect to some other part. APRIL 18, 2008 SEWING AND CUTTING MACHINES - UL 1594 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.10 LOW-VOLTAGE CIRCUIT A circuit involving a peak open-circuit potential of not more than 42.4 V supplied by a
41、primary battery; a Class 2 transformer; or a combination of an isolation transformer and a xed impedance that (as a unit) complies with all performance requirements for a Class 2 transformer. A circuit derived from a line-voltage circuit by connecting a resistance in series with the supply circuit a
42、s a means of limiting the voltage and current, is not considered to be a low-voltage circuit. 3.11 PORTABLE Capable of being carried or conveyed. 3.12 REMOTELY CONTROLLED PRODUCT A product that is out of view of the operator at the starting device. 3.13 SEWING MACHINE TRANSMITTER A motor, provided w
43、ith either a mechanically or electrically operated clutch assembly, used to provide rotary drive for an industrial sewing machine. CONSTRUCTION 4 General 4.1 A product shall employ materials that are acceptable for the particular use, and shall be made and nished with the degree of uniformity and gr
44、ade of workmanship practicable in a well-equipped factory. 5 Frame and Enclosure 5.1 General 5.1.1 A product shall be formed and assembled so that it will have the strength and rigidity necessary to resist the abuses that it is likely to be subjected to under normal and foreseeable abnormal conditio
45、ns. 5.1.2 The enclosure of a remotely or automatically controlled product shall be so constructed as to prevent molten metal, burning insulation, aming particles, or similar materials from falling on combustible materials, including the surface upon which the product is supported. 5.1.3 A door or a
46、cover of an enclosure that provides access to any overload-protective device that requires resetting or renewal shall be hinged or otherwise attached in an equivalent manner. 5.1.4 Means shall be provided for holding the door or cover over a fuseholder in a closed position. APRIL 18, 2008 SEWING AND
47、 CUTTING MACHINES - UL 1594 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.2 Cast and sheet metal 5.2.1 For unreinforced, at surfaces in general, cast metal shall not be less than 1/8 inch (3.2 mm) thick, except that malleable iron may n
48、ot be less than 3/32 inch (2.4 mm) and die-cast metal may be not less than 5/64 inch (2.0 mm) thick. Corresponding thicknesses of not less than 3/32, 1/16 (1.6 mm), and 3/64 inch (1.2 mm), respectively, may be acceptable if the surface under consideration is curved, ribbed, or otherwise reinforced,
49、or if the shape or size, or both, of the surface is such that adequate mechanical strength is provided. 5.2.2 An enclosure of sheet metal is to be judged with respect to its size, shape, thickness of metal, and its application, considering the intended use of the complete product. The use of sheet steel having a thickness of less than 0.026 inch (0.66 mm) if uncoated or 0.029 inch (0.74 mm) if galvanized or of nonferrous sheet metal having a thickness of less than 0.036 inch (0.91 mm) is no
