UL 1340-2012 UL Standard for Safety Hoists (Second Edition Reprint with revisions through and including May 31 2013)《提升机》.pdf

《UL 1340-2012 UL Standard for Safety Hoists (Second Edition Reprint with revisions through and including May 31 2013)《提升机》.pdf》由会员分享，可在线阅读，更多相关《UL 1340-2012 UL Standard for Safety Hoists (Second Edition Reprint with revisions through and including May 31 2013)《提升机》.pdf（72页珍藏版）》请在麦多课文档分享上搜索。

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1340 HoistsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRI

2、BUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Hoists, UL 1340 Second Edition, Dated April 3, 2012 Summary of Topics These revisions to UL 1340 are being issued to update glossary terms, revise the grounding requirements, update motor requirements, increase voltage rating to 1000 V, an

3、d add the Limited Short-Circuit Test, Section 38A. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated March 22, 2013. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the ma

4、rgin. Changes in requirements are marked with a vertical 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 re

5、trieval 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 or implied, including but not limited to, the implied warranties of mer

6、chantability 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 use of or the inability to use this Standard, even if UL or an au

7、thorized 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 electronic versions of ULs Standards for Safety agree to defend, indemnify, an

8、d 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 on the purchasers computer system. The requirements in this Standard a

9、re 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 that have been revised and that have a future effective date are located a

10、fter the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. MAY 31, 2013 UL 1340 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 31, 2013 UL 1340 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER

11、REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 3, 2012 (Title Page Reprinted: May 31, 2013) 1 UL 1340 Standard for Hoists First Edition July 30, 2004 Second Edition April 3, 2012 Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Propos

12、als 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, owners

13、hips, 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 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 3, 2012 HOISTS - UL 1340 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 .6 2 General 6 2.1 Components .6 2.2 Units of measurement .6A 2.3 Undated references .6A 3 Glossary 6A CONSTRUCTION ALL HOISTS 4 General 6B 5 Materials and Assembl

15、y .7 6 Protection Against Corrosion .7 7 Lubrication .7 ELECTRICALLY POWERED HOISTS 8 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts 9 9 Electrical Component Enclosures 14 9.1 General 14 9.2 Nonmetallic enclosures .14 9.3 Metallic enclosures 16 10 Supply Connections .20

16、10.1 General .20 10.2 Strain relief 21 10.3 Bushings 21 11 Internal Wiring 21 11.1 General .21 11.2 Wiring methods 23 12 Grounding .24 13 Bonding for Grounding .24B 13.1 General 24B 13.2 Construction and connections 25 14 Mounting of Components 28 15 Capacitors .28 16 Insulating Material 29 17 Motor

17、s .30 18 Switches and Controllers 30 19 Interlock Switches 31 20 Uninsulated Live Parts 31 21 Spacings 31 22 Printed-Wiring Boards .34 MAY 31, 2013 HOISTS - UL 1340 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE ALL HOISTS 23 N

18、ormal-Operation Test 34 24 Strength Test .34 ELECTRICALLY POWERED HOISTS 25 Metallic-Coating-Thickness Test 34 26 Leakage Current Test .36 27 Humidity Test 39 28 Continuity of Grounding Test 40 29 Starting Current Test 40 30 Input Test 41 31 Temperature Test .41 32 Strain-Relief Test .44 33 Rain Tes

19、t 45 34 Dielectric Voltage-Withstand Test .48 35 Power Failure Test 49 36 Tests on Switches and Controllers 49 36.1 General 49 36.2 Speed-changing switches .49 36.3 Motor-reversing switches 50 36.4 Other switches .50 37 Short-Circuit Test Bonding Conductors 50 38 Impedance Test Bonding Conductors 52

20、 38A Limited Short-Circuit Test .52 PNEUMATICALLY POWERED HOISTS 39 Input-Pressure Test 52A 40 Hydrostatic Pressure Test 52A MANUFACTURING AND PRODUCTION TESTS ELECTRICALLY POWERED HOISTS 41 General 53 42 Dielectric Voltage-Withstand Test .53 43 Grounding-Continuity Test .55 MARKINGS ALL HOISTS 44 G

21、eneral 55 45 Electrically Powered Hoists 56 46 Pneumatically Powered Hoists .57 INSTALLATION AND OPERATING INSTRUCTIONS 47 General 57 MAY 31, 2013 HOISTS - UL 1340 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX A Standards for Com

22、ponentsA1 APRIL 3, 2012 HOISTS - UL 1340 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover hoists of the overhead type intended for material lifting service using either chain or wire rope. Th

23、ey are intended to be suspended from a xed member and may include trolleys for mobility. 1.2 This standard covers electrically powered hoists rated 1000 volts or less to be employed in nonhazardous environmental locations in accordance with the National Electrical Code, ANSI/NFPA 70. 1.2 revised May

24、 31, 2013 1.3 This standard covers pneumatically powered hoists. 1.4 These requirements do not cover: a) Manual and power-operated type portable hoists intended for use with scaffolds suspended by wire ropes; b) Hoists for transporting people; c) Manual operated chain hoists; or d) The xed member or

25、 trolley that suspends the hoist. 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 requirements for that component. See Appendix A for a list of standards covering components used in the products covered by this stan

26、dard. 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 the 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 i

27、n accordance with its rating established for the intended conditions of use. 2.1.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding speci

28、ed limits, and shall be used only under those specic conditions. MAY 31, 2013 HOISTS - UL 1340 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED 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 p

29、arentheses are explanatory or approximate information. 2.2.2 Unless otherwise indicated, all voltage and current values mentioned in this standard are root-mean-square (rms). 2.3 Undated references 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall

30、 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 denitions apply. 3.1.1 BONDED (BONDING) The permanent joining of metallic parts to form an electrically conductive path that provides electrical continuity and t

31、he capacity to conduct any current likely to be imposed without a risk of electric shock, re, or injury to persons. 3.1.1 added May 31, 2013 3.1.2 BONDING JUMPER A conductor, including a strap or similar part, that is used to provide the required electrical conductivity between metal parts required

32、to be electrically connected. 3.1.2 added May 31, 2013 3.2 CIRCUITS, ELECTRICAL a) High-Voltage A circuit with a potential of not more than 1000 volts having circuit characteristics greater than those of a low-voltage power-limited circuit. b) Low-Voltage A circuit with a potential of not more than

33、30 volts AC rms, 42.4 volts DC or AC peak, and supplied by: 1) A primary battery; 2) An NEC Class 2 transformer; or 3) A combination of transformer and xed impedance that, as a unit, complies with all of the performance requirements for a Class 2 transformer. 3.2 revised May 31, 2013 3.2.1 GROUND A

34、conducting connection, whether intentional or accidental, between an electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth. 3.2.1 added May 31, 2013 3.2.2 GROUNDED Connected to earth or to some conducting body that serves in place of earth. 3.2.2

35、added May 31, 2013 MAY 31, 2013 HOISTS - UL 1340 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.2.3 GROUNDING CONDUCTOR An equipment or circuit conductor that is intentionally connected between that electrical circuit or equipment and t

36、he earth or to some conducting body that serves in place of the earth. 3.2.3 added May 31, 2013 3.3 HOIST A suspended machinery unit that is used for lifting or lowering a freely suspended (unguided) load. a) ELECTRICALLY POWERED A hoist in which the prime mover is powered by electricity. b) PNEUMAT

37、ICALLY POWERED A hoist in which the prime mover is powered by compressed gases. 3.4 RATED WORKING LOAD The manufacturers specied maximum load to be lifted by the hoist. The maximum load includes the weight of all materials, and all dead loads lifted by the hoist. Dead loads include the weight of: a)

38、 The hoist; b) Wire rope or chains; c) Rigging equipment/device(s) attached to the hoists bottom hook (e.g., slings, spreader bar/ beams); and d) Ancilliary equipment supported by the hoist, such as the electrical cords, air supply hoses, chain container, etc. CONSTRUCTION ALL HOISTS 4 General 4.1 A

39、 product shall be constructed so that it will have the strength and durability to withstand normal usage and to comply with the performance requirements. 4.2 An exposed metal surface shall be free from sharp edges, burrs, and other features that constitute a risk of injury to persons. MAY 31, 2013 H

40、OISTS - UL 1340 6BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5 Materials and Assembly 5.1 All metal parts and ttings shall be made of aluminum or steel alloys, wrought iron, malleable iron, or other metal that is of equivalent strength

41、for the intended purpose and shall be securely attached by means of rivets, bolts, screws, or other means determined to be the equivalent. Cast gray iron shall not be used for load-carrying parts. 5.2 Nuts shall be lock nuts or provided with lock washers. 6 Protection Against Corrosion 6.1 All hardw

42、are and materials shall be resistant to normal atmospheric corrosion. Exception: Aluminum, brass, copper, stainless steel, or other metal inherently resistant to corrosion may be used without additional protection. 6.2 Corrosion protection shall be by metallic or nonmetallic coatings, such as galvan

43、izing, sherardizing, plating, or painting. 6.3 Different metals shall not be used in combination such as to cause galvanic action that will adversely affect the strength of the product. 7 Lubrication 7.1 Each separate enclosure of a hoist shall be provided with a means to maintain lubrication of all

44、 moving parts requiring lubrication at all times. 7.2 Self-sealed, self-lubricating, and dry bearings may be employed. MAY 31, 2013 HOISTS - UL 1340 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 31, 2013 HOISTS - UL 1340 8 No Text on

45、This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL ELECTRICALLY POWERED HOISTS 8 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts 8.1 To reduce the risk of unintentional contact that may involve a risk of ele

46、ctric shock from an uninsulated live part or lm-coated wire, or injury to a person from a moving part, an opening in an enclosure shall comply with either (a) or (b). a) For an opening that has a minor dimension (see 8.5) less than 1 inch (25.4 mm), such a part or wire shall not be contacted by the

47、probe illustrated in Figure 8.1. b) For an opening that has a minor dimension of 1 inch or more, such a part or wire shall be spaced from the opening as specied in Table 8.1. Exception No. 1: A motor need not comply with these requirements if it complies with the requirements in 8.2. Exception No. 2

48、: The inrunning wire rope need not comply with these requirements at any point where a static guide is provided. If roller guides or tension rollers are used, a xed shield or static guard shall be provided to prevent access to the pinch area by the probe shown in Figure 8.2. Exception No. 3: For a w

49、inding drum hoist, the inrunning wire rope at the drum need not be guarded when the drum is located in an area not readily accessible to a user in the normal work position. The pinch area shall be located off and below, or a minimum of 7 feet (2.13 m) above, the normal scaffold work area. This is generated text for gtxt. APRIL 3, 2012 HOISTS - UL 1340 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 8.1 Articulate prob