1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1323 Scaffold Hoists 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 Scaffold Hoists, UL 1323 Fourth Edition, Dated April 5, 2007 Summary of Topics This revision to ANSI/UL 1323 is being issued to address the editorial maintenance of UL Standards for Safety. These revisions are
3、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. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system
4、, 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 merchantability o
5、r 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 authorized UL re
6、presentative 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, and hold UL harm
7、less 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. SEPTEMBER 20, 2016 UL 1323 tr1UL COPYRIGHTED MATE
8、RIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 20, 2016 UL 1323 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 5, 2007 (Title Page Reprinted: September 20, 201
9、6) 1 UL 1323 Standard for Scaffold Hoists First Edition May, 1985 Second Edition July, 1995 Third Edition August, 2001 Fourth Edition April 5, 2007 This ANSI/UL Standard for Safety consists of the Fourth Edition including revisions through September 20, 2016. The most recent designation of ANSI/UL 1
10、323 as an American National Standard (ANSI) occurred on October 30, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted
11、 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, ownerships, and rights regard
12、ing those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 1323-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 5, 2007 SCAFFOLD HOISTS - UL 1323 2 No Text on This
13、PageUL 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 .6 2.3 Undated references .6A 3 Glossary .6A 4 Installation and Operating Instructions .7 CONSTRUCTION
14、 ALL HOISTS 5 General 8 6 Wire Ropes .10 7 Drums and Sheaves .10 7.1 General .10 7.2 Winding drums 10 7.3 Traction drums and traction sheaves .10 7.4 Deection sheaves 11 7.5 Transfer drums and directional sheaves 11 8 Speed Reducers 11 9 Shafts, Fillets, Keys, and Splines 11 10 Manual Cranks .11 11
15、Protection Against Corrosion 11 12 Lubrication 12 13 Gears 12 MANUALLY POWERED HOISTS 14 General 12 ELECTRICALLY POWERED HOISTS 15 General 13 16 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts .13 17 Protection of Service Personnel .17 18 Electrical Component Enclosures 1
16、8 18.1 General .18 18.2 Nonmetallic enclosures 18 18.3 Metallic enclosures 20 19 Supply Connections .24 19.1 General .24 19.2 Strain relief .25 19.3 Bushings .25 20 Internal Wiring 25 20.1 General .25 20.2 Wiring methods .27 21 Grounding .28 JUNE 18, 2014 SCAFFOLD HOISTS - UL 1323 3UL COPYRIGHTED MA
17、TERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 22 Bonding for Grounding 28B 22.1 General .28B 22.2 Construction and connections .29 23 Mounting of Components 32 24 Capacitors 33 25 Insulating Material .34 26 Motors .34 27 Receptacles 35 28 Switches and Cont
18、rollers .36 29 Interlock Switches .36 30 Uninsulated Live Parts .37 31 Spacings .37 32 Printed-Wiring Boards 39 PNEUMATICALLY POWERED HOISTS 33 General 39 34 Components 39 POWER-OPERATED HOISTS 35 General 39 36 Primary Brakes 41 37 Secondary Brakes .41 38 Load-Limiting Devices 42 39 Guards .42 PERFO
19、RMANCE ALL HOISTS 40 Normal-Operation Test 43 40.1 General .43 41 Endurance Test Actuating Mechanisms for Power-Operated Hoists .43 42 Strength Test .44 43 Operation Test Hoist Run-Off .44 44 Accelerating-Descent Speed Test .44 45 Wire-Rope Test .45 46 Load-Limiting Test .45 46.1 Power-operated hois
20、ts 45 46.2 Manually operated hoists .46 47 Accelerated-Corrosion Test 46 48 Metallic-Coating-Thickness Test .47 ELECTRICALLY POWERED HOISTS 49 General 49 50 Leakage-Current Test 50 51 Input Test 53 52 Temperature Test .53 53 Strain-Relief Test 56 54 Abnormal-Operation Test .57 55 Endurance Test .57
21、JUNE 18, 2014 SCAFFOLD HOISTS - UL 1323 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 56 Tests on Switches and Controllers .58 56.1 General .58 56.2 Speed-changing switches 58 56.3 Motor-reversing switches .59 56.4 Other switches 59 57 Ov
22、ervoltage and Undervoltage Tests Electromagnets 59 58 Accelerated-Aging Test 60 59 Rain Test .60 60 Dielectric Voltage-Withstand Test 62 61 Short-Circuit Test Bonding Conductors .64 62 Impedance Test Bonding Conductors 65 63 Environmental Test Bonding Members and Resilient Rubber Mountings 65 63.1 G
23、eneral .65 63.2 Humidity test .65 63.3 Elevated-temperature test 65 63.4 Ozone test .66 64 Overcurrent Test 66 65 Limited Short-Circuit Test .68 66 Immersion Test Resilient Rubber Mountings 70 PNEUMATICALLY POWERED HOISTS 67 Input-Pressure Test .70 68 Hydrostatic-Pressure Test 70 MANUFACTURING AND P
24、RODUCTION TESTS ELECTRICALLY POWERED HOISTS 69 General 71 70 Dielectric Voltage-Withstand Test 71 71 Grounding-Continuity Test 73 MARKINGS 72 All Hoists 73 73 Winding-Drum Hoists 74 74 Power-Operated Hoists 74 74.1 General .74 74.2 Electrically powered hoists .74 74.3 Pneumatically powered hoists .7
25、5 74.4 Controlled descent hoists 75 APPENDIX A Standards for ComponentsA1 APRIL 5, 2007 SCAFFOLD HOISTS - UL 1323 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover manual and power-operated ty
26、pe portable hoists intended for use with scaffolds suspended by wire ropes. 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 June 18, 2014 2
27、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 standard. 2.1.2 A component is not requi
28、red 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 in accordance with its rating establi
29、shed 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 specied limits, and shall be used only un
30、der those specic conditions. 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 this standard are root-mean-square (rms).
31、 JUNE 18, 2014 SCAFFOLD HOISTS - UL 1323 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 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 referri
32、ng to the latest edition of that code or standard. 3 Glossary 3.1 For the purpose of this standard the following denitions apply. 3.1.2 BONDED (BONDING) The permanent joining of metallic parts to form an electrically conductive path that provides electrical continuity and the capacity to conduct any
33、 current likely to be imposed without a risk of electric shock, re, or injury to persons. 3.1.2 added June 18, 2014 3.2 ANGLE, FLEET The angle at which the wire rope exits the winding drum, as measured between the rope before it passes through the rope guide and a line that is perpendicular to the d
34、rum axis, tangent to the drum surface, and passing through the center of the rope guide. 3.2.2 BONDING JUMPER A conductor, including a strap or similar part, that is used to provide the required electrical conductivity between metal parts required to be electrically connected. 3.2.2 added June 18, 2
35、014 3.3 BRAKE, PRIMARY A brake, automatically applied, that stops the hoist and its rated load under intended operating conditions, when power to the prime mover is interrupted or discontinued. 3.4 BRAKE, SECONDARY A brake intended to automatically arrest the descent of the hoist and its suspended l
36、oad when there is an overspeed condition. 3.5 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 30 volts AC
37、 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. 3.5 revised June 18, 2014 3.6 CONTROLLED DESCENT DE
38、VICE A device intended to allow controlled nonpowered descent of a normally power-operated hoist. 3.7 DRUM, TRACTION A type of drum that does not accumulate the suspension rope, but ascends or descends the rope as a result of friction between the rope and the drum. 3.8 DRUM, TRANSFER A drum used to
39、transfer the suspension wire rope from one groove to another groove on the traction drum of a traction hoist. JUNE 18, 2014 SCAFFOLD HOISTS - UL 1323 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.9 DRUM, WINDING A drum that accumulates
40、 the suspension rope in one or more layers. 3.10 ELECTRIC SHOCK A risk of electric shock is considered to exist at any exposed part if the available open-circuit potential is more than 42.4 volts peak, 30 volts rms, and the available current through a 1500-ohm resistor is more than 5 milliamperes. 3
41、.10.1 GROUND A 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. 3.10.1 added June 18, 2014 3.10.2 GROUNDED Connected to earth or to some conducting body that serves in plac
42、e of earth. 3.10.2 added June 18, 2014 3.10.3 GROUNDING CONDUCTOR An equipment or circuit conductor that is intentionally connected between that electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth. 3.10.3 added June 18, 2014 3.11 HOIST, ELECTRIC
43、ALLY POWERED A hoist in which the prime mover is powered by electricity. 3.12 HOIST, MANUALLY POWERED A hoist in which the hoisting power is derived directly from the operator. 3.13 HOIST, PNEUMATICALLY POWERED A hoist in which the prime mover is powered by compressed gases. 3.14 HOIST, POWER-OPERAT
44、ED Either an electrically powered hoist or a pneumatically powered hoist. 3.15 PRIME MOVER The source of power for the hoist, exclusive of any speed reducer. 3.16 RATED WORKING LOAD The manufacturers specied maximum load to be lifted by the hoist. The maximum load includes the weight of all workers,
45、 materials, and all dead loads lifted by the hoist. Dead loads include the weight of: a) The hoist; b) Wire rope (winding drum and tail line); c) Platform and platform supports; d) Guard rails; e) Building ties; f) Rollers, stand offs, and wire winder; g) Electrical cords or air supply hoses; and h)
46、 Other related equipment as applicable that may be included on a stage or otherwise lifted by a hoist. JUNE 18, 2014 SCAFFOLD HOISTS - UL 1323 6BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.17 SHEAVE, DEFLECTION A sheave used for small
47、directional changes or deections of the wire rope. 3.18 SHEAVE, DIRECTIONAL A sheave used to transfer or change the direction of the wire rope. 3.19 SHEAVE, TRACTION A single-wrap sheave that does not accumulate the suspension rope, but ascends or descends the rope as a result of friction between th
48、e rope and the sheave. 3.20 SPEED REDUCER A device used to reduce the output speed of the prime mover to the desired speed of the hoist. 3.21 SUSPENSION SCAFFOLD An assembly for supporting workmen and materials by means of wire ropes from an overhead suspension system and arranged and operated to al
49、low raising or lowering to a desired work position. 4 Installation and Operating Instructions 4.1 A hoist shall be supplied with complete operation and maintenance instructions. A copy of the instructions shall be used as a guide in the examination and test of the hoist. 4.2 The instructions shall include the directions and information considered by the manufacturer or private labeler to be necessary for intended installation, maintenance, operation, an
