UL 775-1998 UL Standard for Safety Graphic Arts Equipment (Third Edition Reprint with Revisions Through and Including November 19 2013)《书画印刷设备》.pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 775 Graphic Arts EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODU

2、CTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Graphic Arts Equipment, UL 775 Third Edition, Dated February 27, 1998 Summary of Topics This revision to UL 775 is being issued to remove the reference to the withdrawal date of UL 873 and to address universal upkeep of UL S

3、tandards 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 vertical line

4、 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 means, elec

5、tronic, 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 event will UL be

6、 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 the possibilit

7、y 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, expense, liabil

8、ity, 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, sections, tabl

9、es, 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 SUPERSEDED REQUIREME

10、NTS notice. NOVEMBER 19, 2013 UL 775 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 19, 2013 UL 775 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM

11、UL FEBRUARY 27, 1998 (Title Page Reprinted: November 19, 2013) 1 UL 775 Standard for Graphic Arts Equipment First Edition April, 1981 Second Edition March, 1994 Third Edition February 27, 1998 This UL Standard for Safety consists of the Third Edition including revisions through November 19, 2013. Co

12、mments 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. Neither a printed nor ele

13、ctronic 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.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO

14、DUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 29, 2010 GRAPHIC ARTS EQUIPMENT - UL 775 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Glossary .5 3 Components 6 4 Units of

15、Measurement .7 CONSTRUCTION 5 General 7 6 Frame and Enclosure 7 7 Accessibility of Live Parts .11 8 Mechanical Assembly 16 9 Protection Against Corrosion 17 10 Supply Connections .17 10.1 General .17 10.2 Permanently connected product 17 10.3 Cord-connected products 19 11 Current-Carrying Parts 21 1

16、2 Internal Wiring 21 12.1 General .21 12.2 Splices and connections .22A 13 Interconnecting Cords and Cables 23 14 Insulating Material 23 15 Motor Construction 24 16 Motor Overcurrent Protection .24 17 Overcurrent or Thermal-Protective Devices 25 18 Lampholders .26 19 Receptacles 26 20 Switches and C

17、ontrols .27 21 Capacitors .27 22 Spacings 28 23 Grounding .31 PROTECTION AGAINST RISK OF INJURY TO PERSONS 24 General 33 25 Sharp Edges .33 26 Enclosures and Guards 33 27 Materials .35 28 Rotating or Other Moving Parts .35 29 Parts Subject to Pressure 35 30 Pressure-Relief Devices .37 31 Switches, C

18、ontrols, and Interlocks 37 32 Stability 38 33 Secondary Circuits 39 33.1 General .39 33.2 Connections to frame .40 33.3 Protection of secondary-circuit wiring .40 34 Liquid Containers .41 APRIL 29, 2010 GRAPHIC ARTS EQUIPMENT - UL 775 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION

19、 OR DISTRIBUTION WITHOUT PERMISSION FROM UL 35-50 Reserved For Future Use .41 PERFORMANCE 51 Starting Current 41 52 Input 41 53 Normal Temperature 42 53.1 General .42 53.2 Maximum intended load .46 54 Ozone .47 55 Dielectric Voltage-Withstand .47 55.1 Primary circuits 47 55.2 Secondary circuits 48 5

20、6 Intended Operation .49 57 Switches and Controls .50 58 Strain Relief Cord-Connected Products 51 59 Permanence of Marking .51 MANUFACTURING AND PRODUCTION TESTS 60 Production-Line Dielectric Voltage-Withstand .52 61 Production-Line Grounding Continuity .54 MARKINGS 62 Details .54 62.1 General .54 6

21、2.2 Permanently connected products .57 ACCESSORY EQUIPMENT AND CONVERSION UNITS 63 General 58 64 Construction .58 65 Performance (Installation) Test .59 66 Markings .59 APPENDIX A Standards for ComponentsA1 APRIL 19, 2006 GRAPHIC ARTS EQUIPMENT - UL 775 2BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F

22、URTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 19, 2006 GRAPHIC ARTS EQUIPMENT - UL 775 3 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This page intentionally left blank. APRIL 19, 2006 GRAPHIC AR

23、TS EQUIPMENT - UL 775 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover products that are intended for use in printing establishments. Included are such products as sheetfed, webfed, and offse

24、t presses and controls, composing and typesetting machines, cutting and folding machines, and other products that are used in the preparation of mats. The products covered are for connection to interior wiring systems in accordance with the National Electrical Code, and are rated at 600 V or less. 1

25、.2 These requirements do not cover white printers, photocopy machines, typewriters, or any other product that is covered by individual requirements that are separate from this Standard. 1.3 Products that generally would be covered by the requirements in this Standard, such as duplicating equipment,

26、are covered by the requirements in the Standard for Information Technology Equipment Safety Part 1: General Requirements, UL 60950-1, when the product is not intended for use in printing establishments. 1.3 revised April 29, 2010 1.4 A product that contains features, characteristics, components, mat

27、erials, or systems new or different from those covered by the requirements in this Standard, and that involves a risk of re, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the accepta

28、ble level of safety as originally anticipated by the intent of this Standard. A product whose features, characteristics, components, materials, or systems conict with specic requirements or provisions of this Standard, cannot be judged to comply with this Standard. Where considered appropriate, revi

29、sion of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this Standard. 1.4 added February 27, 1998 2 Glossary 2.1 For the purpose of this Standard the following denitions apply. 2.2 AUTOMATICALLY CONTROLLED PRODUCT

30、A product is considered to be automatically controlled when one or more of the following conditions occur: a) The repeated starting of the product, beyond one complete predetermined cycle of operation to the point where some form of limit switch opens the circuit, is independent of any manual contro

31、l. b) During any single predetermined cycle of operation, a motor stops and restarts one or more times. c) Upon energizing the product, the initial starting of a motor is intentionally delayed beyond intended, conventional starting. d) During any single predetermined cycle of operation, changing of

32、the mechanical load reduces the motor speed to reestablish startingwinding connections to the supply circuit. 2.3 CONTINUOUS-DUTY MOTOR A motor is considered to be subjected to continuous duty when, under any intended condition of use, it is capable of operating unattended and under load for a perio

33、d of 3 hours or more. APRIL 29, 2010 GRAPHIC ARTS EQUIPMENT - UL 775 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.4 FIELD-WIRING TERMINAL Any terminal to which a supply or other wire is capable of being connected by an installer in the

34、 eld is a eld-wiring terminal unless the wire is provided as part of the product and a pressure terminal connector, soldering lug, soldered loop, crimped eyelet, or other means for making the connection is factory-assembled to the wire. 2.5 LINE-VOLTAGE CIRCUIT A circuit involving a potential of not

35、 more than 600 V, and having circuit characteristics in excess of those of a low-voltage circuit. 2.6 LOW-VOLTAGE CIRCUIT A circuit involving a peak open-circuit potential of not more than 42.4 V supplied by a primary battery, by a Class 2 transformer, or by a combination of a transformer and a xed

36、impedance that as a unit complies with all of the performance requirements for a Class 2 transformer. A circuit that is derived from a line-voltage circuit by connecting a resistance in series with the supply circuit as a means of limiting the voltage and current is not considered to be a low-voltag

37、e circuit. 2.7 OPERATING SERVICING Any form of servicing that is able to be performed by personnel other than those who are trained to maintain the particular product is operator servicing. Some examples of operator servicing are as follows: a) The attachment of accessories by means of attachment pl

38、ugs and receptacles or by means of other separable connectors, b) The changing of tapes or ribbons that do not involve complicated operations (see 2.8), c) The replacement of recording tapes, disks, program boards, punched cards, or paper forms, and d) Resetting or replacement of circuit breakers, f

39、uses, and lamps that are accessible without the use of tools; also, replacement of lamps that require frequent replacement such as lamps of the projector type whether or not the operation requires the use of tools. 2.8 Changing ribbons is considered to be a function of service personnel rather than

40、operator servicing when the act involves extensive disassembly of the product. 2.9 REMOTELY CONTROLLED PRODUCT A product that is out of sight of the operator. 2.10 SAFETY CIRCUIT Any primary or secondary circuit that is relied upon to reduce the risk of re, electric shock, or injury to persons. An i

41、nterlock circuit, for example, is considered to be a safety circuit. 2.11 SECONDARY CIRCUITS Secondary circuits are those circuits supplied from the secondary windings of isolating transformers. See 33.1 33.3. 2.12 TRANSFER SWITCH A switch so located in a circuit that it is unable to make or break c

42、urrent during normal or abnormal conditions. A voltage selector is an example of a transfer switch. 3 Components 3.1 Except as indicated in 3.2, 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 co

43、mponents generally used in the products covered by this Standard. 3.1 revised February 27, 1998 FEBRUARY 27, 1998 GRAPHIC ARTS EQUIPMENT - UL 775 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.2 A component is not required to comply with

44、 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. 3.2 added February 27, 1998 3.3 A component shall be used in accordance with its recogn

45、ized rating established for the intended conditions of use. 3.3 added February 27, 1998 3.4 Specic components are recognized as being incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain tem

46、peratures not exceeding specied limits, and shall be used only under those specic conditions for which they have been recognized. 3.4 added February 27, 1998 4 Units of Measurement 4.1 When a value for measurement is followed by a value in other units in parentheses, the second value may be only app

47、roximate. The rst stated value is the requirement. 4.2 Unless indicated otherwise, all voltage and current values mentioned in this Standard are root-mean-square (rms). CONSTRUCTION 5 General 5.1 A product shall employ materials that are acceptable for the particular use, as determined by the perfor

48、mance requirements of this Standard. 5.2 When metals are depended upon to meet the requirements of this Standard, they shall not be used in such combination as to cause galvanic action that affects any part of the product. 6 Frame and Enclosure 6.1 A product shall be formed and assembled so that it

49、has the strength and rigidity required to resist the abuses to which it is likely to be subjected, without presenting a risk of re, electric shock, or injury to persons due to total or partial collapse with resulting reduction of spacings, loosening or displacement of parts, or other defects. 6.2 For unreinforced at surfaces, cast metal shall not be less than 1/8 inch (3.2 mm) thick, malleable iron shall not be less than 3/32 inch (2.4 mm) thick, and die-cast metal shall not be les