SANS 60204-32-2009 Safety of machinery - Electrical equipment of machines Part 32 Requirements for hoisting machines《机械安全 机械电气设备 第32部分 起重机械要求》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22898-9 SANS 60204-32:2009Edition 1IEC 60204-32:2008Edition 2SOUTH AFRICAN NATIONAL STANDARD Safety of machinery Electrical equipment of m

4、achines Part 32: Requirements for hoisting machines This national standard is the identical implementation of IEC 60204-32:2008 and is adopted with the permission of the International Electrotechnical Commission. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pret

5、oria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 60204-32:2009 Edition 1 IEC 60204-32:2008 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 61, Rotating electrical machinery, in accord

6、ance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in August 2009. IEC 60204-32Edition 2.0 2008-03INTERNATIONAL STANDARD NORME INTERNATIONALESafety of machinery Electrical equipment of machines Part 32: Requireme

7、nts for hoisting machines Scurit des machines Equipement lectrique des machines Partie 32: Exigences pour les appareils de levage INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XFICS 29.020; 53.020.01 PRICE CODECODE PRIXISBN 2-8318-9630-4SANS 60204-32:2009This s

8、 tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 60204-32 IEC:2008 CONTENTS FOREWORD.9 INTRODUCTION.11 1 Scope.14 2 Normative references15 3 Terms and definitions .18 4 General requirements .26 4.1 General considerations 26 4.2 Selection of equip

9、ment 27 4.2.1 General .27 4.2.2 Selection of power contactors 27 4.2.3 Electrical equipment in compliance with the IEC 60439 series 27 4.3 Electrical supply 27 4.3.1 General .27 4.3.2 AC supplies .27 4.3.3 DC supplies .28 4.3.4 On-board power supply28 4.4 Physical environment and operating condition

10、s 29 4.4.1 General .29 4.4.2 Electromagnetic compatibility (EMC) 29 4.4.3 Ambient air temperature.30 4.4.4 Humidity 30 4.4.5 Altitude 30 4.4.6 Contaminants 30 4.4.7 Ionizing and non-ionizing radiation .30 4.4.8 Vibration, shock, and bump30 4.5 Transportation and storage 30 4.6 Provisions for handlin

11、g 31 4.7 Installation.31 5 Incoming supply conductor terminations and devices for disconnecting and switching off .31 5.1 Incoming supply conductor terminations.31 5.2 Terminal for connection to the external protective earthing system .31 5.3 Supply disconnecting and switching devices.32 5.3.1 Gener

12、al .32 5.3.2 Type 32 5.3.3 Requirements 34 5.3.4 Operating means .34 5.3.5 Crane-supply-switch.34 5.3.6 Crane-disconnector35 5.3.7 Crane-switch36 5.3.8 Special circuits 37 5.4 Devices for switching off for prevention of unexpected start-up.37 5.5 Devices for disconnecting electrical equipment 38 5.6

13、 Protection against unauthorized, inadvertent and/or mistaken connection.39 6 Protection against electric shock.39 6.1 General .39 SANS 60204-32:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60204-32 IEC:2008 3 6.2 Protection against di

14、rect contact 39 6.2.1 General .39 6.2.2 Protection by enclosures39 6.2.3 Protection by insulation of live parts .40 6.2.4 Protection against residual voltages .41 6.2.5 Protection by barriers.41 6.2.6 Protection by placing out of reach or protection by obstacles 41 6.3 Protection against indirect co

15、ntact .41 6.3.1 General .41 6.3.2 Prevention of the occurrence of a touch voltage .42 6.3.3 Protection by automatic disconnection of supply.42 6.4 Protection by the use of PELV43 6.4.1 General requirements 43 6.4.2 Sources for PELV 43 7 Protection of equipment 43 7.1 General .43 7.2 Overcurrent prot

16、ection .44 7.2.1 General .44 7.2.2 Supply conductors .44 7.2.3 Power circuits 44 7.2.4 Control circuits.45 7.2.5 Socket outlets and their associated conductors 45 7.2.6 Lighting circuits45 7.2.7 Transformers.45 7.2.8 Location of overcurrent protective devices45 7.2.9 Overcurrent protective devices.4

17、5 7.2.10 Rating and setting of overcurrent protective devices.46 7.3 Protection of motors against overheating .46 7.3.1 General .46 7.3.2 Overload protection47 7.3.3 Over-temperature protection 47 7.3.4 Current limiting protection 47 7.4 Abnormal temperature protection .47 7.5 Protection against sup

18、ply interruption or voltage reduction and subsequent restoration .47 7.6 Motor overspeed protection48 7.7 Earth fault/residual current protection.48 7.8 Phase-sequence protection48 7.9 Protection against switching surges and lightning.48 8 Equipotential bonding .49 8.1 General .49 8.2 Protective bon

19、ding circuit.51 8.2.1 General .51 8.2.2 Protective conductors 51 8.2.3 Continuity of the protective bonding circuit .52 8.2.4 Exclusion of switching devices from the protective bonding circuit 52 8.2.5 Parts that need not be connected to the protective bonding circuit 53 8.2.6 Protective conductor c

20、onnecting points 53 SANS 60204-32:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 60204-32 IEC:2008 8.2.7 Additional protective bonding requirements for electrical equipment having earth leakage currents higher than 10 mA a.c. or d.c.5

21、3 8.3 Functional bonding 54 8.4 Measures to limit the effects of high leakage current 54 9 Control circuits and control functions.54 9.1 Control circuits 54 9.1.1 Control circuit supply .54 9.1.2 Control circuit voltages.54 9.1.3 Protection 55 9.2 Control functions .55 9.2.1 Start functions .55 9.2.

22、2 Stop functions55 9.2.3 Operating modes .55 9.2.4 Suspension of safeguarding.55 9.2.5 Operation 56 9.2.6 Other control functions.58 9.2.7 Cableless controls .59 9.3 Protective interlocks 61 9.3.1 Reclosing or resetting of an interlocking safeguard.61 9.3.2 Exceeding operating limits .61 9.3.3 Opera

23、tion of auxiliary functions 62 9.3.4 Interlocks between different operations and for contrary motions 62 9.3.5 Reverse current braking.62 9.4 Control functions in the event of failure 62 9.4.1 General requirements 62 9.4.2 Measures to minimize risk in the event of failure 63 9.4.3 Protection against

24、 mal-operation due to earth faults, voltage interruptions, and loss of circuit continuity 64 9.4.4 Protection against mal-operation of a motion control system.66 10 Operator interface and hoisting machine mounted control devices.66 10.1 General .66 10.1.1 General device requirements .66 10.1.2 Locat

25、ion and mounting.66 10.1.3 Protection 67 10.1.4 Position sensors 67 10.1.5 Portable and pendant control stations 67 10.2 Push-buttons .67 10.2.1 Colours67 10.2.2 Markings68 10.3 Indicator lights and displays.69 10.3.1 General .69 10.3.2 Colours69 10.3.3 Flashing lights and displays .70 10.4 Illumina

26、ted push-buttons70 10.5 Rotary control devices .70 10.6 Start devices .70 10.7 Emergency stop devices 70 10.7.1 Location of emergency stop devices.70 10.7.2 Types of emergency stop device 71 SANS 60204-32:2009This s tandard may only be used and printed by approved subscription and freemailing client

27、s of the SABS .60204-32 IEC:2008 5 10.7.3 Colour of actuators 71 10.7.4 Local operation of the crane-supply-switch and the crane-disconnector to effect emergency stop71 10.8 Emergency switching-off devices .71 10.8.1 Location of emergency switching-off devices 71 10.8.2 Types of emergency switching

28、off device71 10.8.3 Colour of actuators 72 10.8.4 Local operation of the crane-supply-switch and the crane-disconnector to effect emergency switching off .72 10.9 Enabling control device72 11 Controlgear: location, mounting, and enclosures .72 11.1 General requirements 72 11.2 Location and mounting.

29、73 11.2.1 Accessibility and maintenance73 11.2.2 Physical separation or grouping .73 11.2.3 Heating effects 74 11.3 Degrees of protection 74 11.4 Enclosures, doors and openings 74 11.5 Access to switchgear and to controlgear 75 11.5.1 General .75 11.5.2 Access to gangways 75 11.5.3 Gangways in front

30、 of switchgear and controlgear76 11.5.4 Gangway and door restrictions .76 12 Conductors and cables .76 12.1 General requirements 76 12.2 Conductors76 12.3 Insulation.77 12.4 Current-carrying capacity in normal service78 12.5 Voltage drop79 12.6 Flexible cables.80 12.6.1 General .80 12.6.2 Mechanical

31、 rating.80 12.6.3 Current-carrying capacity of cables wound on drums 80 12.7 Conductor wires, conductor bars and slip-ring assemblies81 12.7.1 Protection against direct contact 81 12.7.2 Protective conductor circuit 83 12.7.3 Protective conductor current collectors.83 12.7.4 Removable current collec

32、tors with a disconnector function .83 12.7.5 Clearances in air83 12.7.6 Creepage distances .83 12.7.7 Conductor system sectioning .84 12.7.8 Construction and installation of conductor wire, conductor bar systems and slip-ring assemblies 84 13 Wiring practices84 13.1 Connections and routing 84 13.1.1

33、 General requirements 84 13.1.2 Conductor and cable runs 85 13.1.3 Conductors of different circuits.85 13.1.4 Connection between pick-up and pick-up converter of an inductive power supply system85 SANS 60204-32:2009This s tandard may only be used and printed by approved subscription and freemailing

34、clients of the SABS . 6 60204-32 IEC:2008 13.2 Identification of conductors 86 13.2.1 General requirements 86 13.2.2 Identification of the protective conductor 86 13.2.3 Identification of the neutral conductor.86 13.2.4 Identification by colour .86 13.3 Wiring inside enclosures87 13.4 Wiring outside

35、 enclosures87 13.4.1 General requirements 87 13.4.2 External ducts87 13.4.3 Connection to the hoisting machine and to moving elements on the hoisting machine88 13.4.4 Interconnection of devices on the hoisting machine 89 13.4.5 Plug/socket combinations 89 13.4.6 Dismantling for shipment90 13.4.7 Add

36、itional conductors.90 13.5 Ducts, connection boxes and other boxes 90 13.5.1 General requirements 90 13.5.2 Percentage fill of ducts 91 13.5.3 Rigid metal conduits and fittings.91 13.5.4 Flexible metal conduits and fittings.91 13.5.5 Flexible non-metallic conduits and fittings 91 13.5.6 Cable trunki

37、ng systems91 13.5.7 Hoisting machine compartments and cable trunking systems92 13.5.8 Connection boxes and other boxes.92 13.5.9 Motor connection boxes .92 14 Electric motors and associated equipment 92 14.1 General requirements 92 14.2 Motor enclosures .92 14.3 Motor dimensions 92 14.4 Motor mounti

38、ng and compartments 92 14.5 Criteria for motor selection.93 14.6 Protective devices for mechanical brakes.93 14.7 Electrically operated mechanical brakes.93 15 Accessories and lighting .94 15.1 Accessories.94 15.2 Local lighting on the hoisting machine and for the equipment .94 15.2.1 General .94 15

39、.2.2 Supply .94 15.2.3 Protection 95 15.2.4 Fittings 95 16 Marking, warning signs and reference designations.95 16.1 General .95 16.2 Warning signs .95 16.2.1 Electric shock hazard.95 16.2.2 Hot surfaces hazard.95 16.3 Functional identification .96 16.4 Marking of equipment 96 16.5 Reference designa

40、tions .96 17 Documentation .96 SANS 60204-32:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60204-32 IEC:2008 7 17.1 General .96 17.2 Information to be provided .97 17.3 Requirements applicable to all documentation97 17.4 Installation do

41、cuments .98 17.5 Overview diagrams and function diagrams .98 17.6 Circuit diagrams 99 17.7 Operating manual 99 17.8 Maintenance manual99 17.9 Parts list99 18 Verification .100 18.1 General .100 18.2 Verification of conditions for protection by automatic disconnection of supply .100 18.2.1 General .1

42、00 18.2.2 Test methods in TN-systems100 18.2.3 Application of the test methods for TN-systems101 18.3 Insulation resistance tests .103 18.4 Voltage tests .103 18.5 Protection against residual voltages.104 18.6 Functional tests .104 18.7 Retesting.104 Annex A (normative) Protection against indirect c

43、ontact in TN-systems.105 Annex B (informative) Inquiry form for the electrical equipment of hoisting machines 109 Annex C (informative) Current-carrying capacity and overcurrent protection of conductors and cables in the electrical equipment of machines112 Annex D (informative) Conductor selection f

44、or intermittent duty 117 Annex E (informative) Explanation of emergency operation functions120 Annex F (informative) Comparison of typical conductor cross-sectional areas .121 Bibliography123 Index 128 Figure 1 Block diagram of combined working cranes in a typical material handling system in a seapo

45、rt.12 Figure 2 Block diagram of a typical crane and its associated electrical equipment .13 Figure 3 Examples of electrical supply systems 33 Figure 4 Example of equipotential bonding for electrical equipment of a hoisting machine50 Figure 5 Protection against mal-operation due to earth faults Metho

46、d a).65 Figure 6 Protection against mal-operation due to earth faults Method b).65 Figure 7 Limits of arms reach 82 Figure A.1 Typical arrangement for fault loop impedance measurement 108 Figure C.1 Methods of conductor and cable installation independent of number of conductors/cables . 113 Figure C

47、.2 Parameters of conductors and protective devices 115 SANS 60204-32:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 8 60204-32 IEC:2008 Figure D.1 Example of current and time of the segments of the operating cycle of a variable speed a.

48、c. hoist drive .119 Table 1 Minimum cross-sectional area of the external protective copper conductor .32 Table 2 Colour-coding for push-button actuators and their meanings 68 Table 3 Symbols for push-buttons 69 Table 4 Colours for indicator lights and their meanings with respect to the condition of

49、the hoisting machine .69 Table 5 Minimum cross-sectional areas of copper conductors.77 Table 6 Classification of conductors .77 Table 7 Examples of current-carrying capacity (Iz) of PVC-insulated copper conductors or cables under steady-state conditions in an ambient air temperature of +40 C for different methods of installation 79 Table 8 Derating factors for cables wound on drums.81 Table 9 Minimum permitted bending radii for the forced guiding of flexible cables .89 Table 10 Application of