1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1323 Scaffold HoistsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
2、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 revise requirements for hoisting speed in 5.1. The revised requirements are substantially in accordanc
3、e with Proposal(s) on this subject dated June 27, 2014. For further information regarding Summary of Requirements, please visit https:/ 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 m
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9、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 preceded
10、 by a SUPERSEDED REQUIREMENTS notice. OCTOBER 30, 2014 UL 1323 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 30, 2014 UL 1323 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTIO
11、N WITHOUT PERMISSION FROM UL APRIL 5, 2007 (Title Page Reprinted: October 30, 2014) 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 includi
12、ng revisions through October 30, 2014. The most recent designation of ANSI/UL 1323 as an American National Standard (ANSI) occurred on October 30, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals f
13、or 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 electronic copy of a Sta
14、ndard 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 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 1323-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC
15、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 5, 2007 SCAFFOLD HOISTS - UL 1323 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 General 6 2.1 Components .6 2.2 Units of measure
16、ment .6 2.3 Undated references .6A 3 Glossary 6A 4 Installation and Operating Instructions .7 CONSTRUCTION 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 di
17、rectional sheaves 11 8 Speed Reducers .11 9 Shafts, Fillets, Keys, and Splines 11 10 Manual Cranks .11 11 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-
18、Coated Wire, and Moving Parts .13 17 Protection of Service Personnel 17 18 Electrical Component Enclosures .18 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 Ge
19、neral .25 20.2 Wiring methods 27 21 Grounding .28 JUNE 18, 2014 SCAFFOLD HOISTS - UL 1323 3UL COPYRIGHTED MATERIAL 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 Com
20、ponents 32 24 Capacitors .33 25 Insulating Material 34 26 Motors .34 27 Receptacles 35 28 Switches and Controllers 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 3
21、5 General 39 36 Primary Brakes .41 37 Secondary Brakes 41 38 Load-Limiting Devices .42 39 Guards 42 PERFORMANCE 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 Acc
22、elerating-Descent Speed Test .44 45 Wire-Rope Test .45 46 Load-Limiting Test 45 46.1 Power-operated hoists 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
23、 52 Temperature Test .53 53 Strain-Relief Test .56 54 Abnormal-Operation Test 57 55 Endurance Test 57 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 Gener
24、al .58 56.2 Speed-changing switches .58 56.3 Motor-reversing switches 59 56.4 Other switches .59 57 Overvoltage 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 Tes
25、t Bonding Conductors 65 63 Environmental Test Bonding Members and Resilient Rubber Mountings .65 63.1 General .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 PNEUM
26、ATICALLY POWERED HOISTS 67 Input-Pressure Test .70 68 Hydrostatic-Pressure Test .70 MANUFACTURING AND PRODUCTION 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-Oper
27、ated Hoists 74 74.1 General .74 74.2 Electrically powered hoists 74 74.3 Pneumatically powered hoists 75 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 WI
28、THOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover manual and power-operated type 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 environmenta
29、l locations in accordance with the National Electrical Code, ANSI/NFPA 70. 1.2 revised June 18, 2014 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 stan
30、dards covering components 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 the component in the product covered by this standard, or b) Is superseded b
31、y 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 performance capabilities. Such components are intended for use only under l
32、imited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under 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 oth
33、erwise indicated, all voltage and current values mentioned in this standard are root-mean-square (rms). 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 referen
34、ce 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 denitions apply. 3.1.2 BONDED (BONDING) The permanent joining of metallic parts to f
35、orm an electrically conductive path that provides electrical continuity and the capacity to conduct any 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 meas
36、ured between the rope before it passes through the rope guide and a line that is perpendicular to the drum 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 el
37、ectrical conductivity between metal parts required to be electrically connected. 3.2.2 added June 18, 2014 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
38、 BRAKE, SECONDARY A brake intended to automatically arrest the descent of the hoist and its suspended load 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 lo
39、w-voltage power-limited circuit. b) Low-Voltage A circuit with a potential of not more than 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
40、performance requirements for a Class 2 transformer. 3.5 revised June 18, 2014 3.6 CONTROLLED DESCENT DEVICE 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 desc
41、ends the rope as a result of friction between the rope and the drum. 3.8 DRUM, TRANSFER A drum used to 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 FU
42、RTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.9 DRUM, WINDING A drum that accumulates 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 p
43、eak, 30 volts rms, and the available current through a 1500-ohm resistor is more than 5 milliamperes. 3.10.1 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.
44、1 added June 18, 2014 3.10.2 GROUNDED Connected to earth or to some conducting body that serves in place 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
45、some conducting body that serves in place of the earth. 3.10.3 added June 18, 2014 3.11 HOIST, ELECTRICALLY 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, PNEUMATI
46、CALLY POWERED A hoist in which the prime mover is powered by compressed gases. 3.14 HOIST, POWER-OPERATED 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 manufacture
47、rs specied maximum load to be lifted by the hoist. The maximum load includes the weight of all workers, 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)
48、Building ties; f) Rollers, stand offs, and wire winder; g) Electrical cords or air supply hoses; and h) 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 R
49、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.17 SHEAVE, DEFLECTION A sheave used for small 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 the rope and the sheave. 3.20 SPE
