EN 60204-32:2008

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
   4.1 General considerations
   4.2 Selection of equipment
        4.2.1 General
        4.2.2 Selection of power contactors
        4.2.3 Electrical equipment in compliance with the
               IEC 60439 series
   4.3 Electrical supply
        4.3.1 General
        4.3.2 AC supplies
        4.3.3 DC supplies
        4.3.4 On-board power supply
   4.4 Physical environment and operating conditions
        4.4.1 General
        4.4.2 Electromagnetic compatibility (EMC)
        4.4.3 Ambient air temperature
        4.4.4 Humidity
        4.4.5 Altitude
        4.4.6 Contaminants
        4.4.7 Ionizing and non-ionizing radiation
        4.4.8 Vibration, shock, and bump
   4.5 Transportation and storage
   4.6 Provisions for handling
   4.7 Installation
5 Incoming supply conductor terminations and devices for
   disconnecting and switching off
   5.1 Incoming supply conductor terminations
   5.2 Terminal for connection to the external protective earthing
        system
   5.3 Supply disconnecting and switching devices
        5.3.1 General
        5.3.2 Type
        5.3.3 Requirements
        5.3.4 Operating means
        5.3.5 Crane-supply-switch
        5.3.6 Crane-disconnector
        5.3.7 Crane-switch
        5.3.8 Special circuits
   5.4 Devices for switching off for prevention of unexpected
        start-up
   5.5 Devices for disconnecting electrical equipment
   5.6 Protection against unauthorized, inadvertent and/or
        mistaken connection
6 Protection against electric shock
   6.1 General
   6.2 Protection against direct contact
        6.2.1 General
        6.2.2 Protection by enclosures
        6.2.3 Protection by insulation of live parts
        6.2.4 Protection against residual voltages
        6.2.5 Protection by barriers
        6.2.6 Protection by placing out of reach or protection
               by obstacles
   6.3 Protection against indirect contact
        6.3.1 General
        6.3.2 Prevention of the occurrence of a touch voltage
        6.3.3 Protection by automatic disconnection of supply
   6.4 Protection by the use of PELV
        6.4.1 General requirements
        6.4.2 Sources for PELV
7 Protection of equipment
   7.1 General
   7.2 Overcurrent protection
        7.2.1 General
        7.2.2 Supply conductors
        7.2.3 Power circuits
        7.2.4 Control circuits
        7.2.5 Socket outlets and their associated conductors
        7.2.6 Lighting circuits
        7.2.7 Transformers
        7.2.8 Location of overcurrent protective devices
        7.2.9 Overcurrent protective devices
        7.2.10 Rating and setting of overcurrent protective devices
   7.3 Protection of motors against overheating
        7.3.1 General
        7.3.2 Overload protection
        7.3.3 Over-temperature protection
        7.3.4 Current limiting protection
   7.4 Abnormal temperature protection
   7.5 Protection against supply interruption or voltage reduction
        and subsequent restoration
   7.6 Motor overspeed protection
   7.7 Earth fault/residual current protection
   7.8 Phase-sequence protection
   7.9 Protection against switching surges and lightning
8 Equipotential bonding
   8.1 General
   8.2 Protective bonding circuit
        8.2.1 General
        8.2.2 Protective conductors
        8.2.3 Continuity of the protective bonding circuit
        8.2.4 Exclusion of switching devices from the protective
               bonding circuit
        8.2.5 Parts that need not be connected to the protective
               bonding circuit
        8.2.6 Protective conductor connecting points
        8.2.7 Additional protective bonding requirements for
               electrical equipment having earth leakage currents
               higher than 10 mA a.c. or d.c
   8.3 Functional bonding
   8.4 Measures to limit the effects of high leakage current
9 Control circuits and control functions
   9.1 Control circuits
        9.1.1 Control circuit supply
        9.1.2 Control circuit voltages
        9.1.3 Protection
   9.2 Control functions
        9.2.1 Start functions
        9.2.2 Stop functions
        9.2.3 Operating modes
        9.2.4 Suspension of safeguarding
        9.2.5 Operation
        9.2.6 Other control functions
        9.2.7 Cableless controls
   9.3 Protective interlocks
        9.3.1 Reclosing or resetting of an interlocking safeguard
        9.3.2 Exceeding operating limits
        9.3.3 Operation of auxiliary functions
        9.3.4 Interlocks between different operations and for
               contrary motions
        9.3.5 Reverse current braking
   9.4 Control functions in the event of failure
        9.4.1 General requirements
        9.4.2 Measures to minimize risk in the event of failure
        9.4.3 Protection against mal-operation due to earth faults,
               voltage interruptions, and loss of circuit continuity
        9.4.4 Protection against mal-operation of a motion
               control system
10 Operator interface and hoisting machine mounted control
   devices
   10.1 General
        10.1.1 General device requirements
        10.1.2 Location and mounting
        10.1.3 Protection
        10.1.4 Position sensors
        10.1.5 Portable and pendant control stations
   10.2 Push-buttons
        10.2.1 Colours
        10.2.2 Markings
   10.3 Indicator lights and displays
        10.3.1 General
        10.3.2 Colours
        10.3.3 Flashing lights and displays
   10.4 Illuminated push-buttons
   10.5 Rotary control devices
   10.6 Start devices
   10.7 Emergency stop devices
        10.7.1 Location of emergency stop devices
        10.7.2 Types of emergency stop device
        10.7.3 Colour of actuators
        10.7.4 Local operation of the crane-supply-switch and
               the crane-disconnector to effect emergency stop
   10.8 Emergency switching-off devices
        10.8.1 Location of emergency switching-off devices
        10.8.2 Types of emergency switching off device
        10.8.3 Colour of actuators
        10.8.4 Local operation of the crane-supply-switch and the
               crane-disconnector to effect emergency switching off
   10.9 Enabling control device
11 Controlgear: location, mounting, and enclosures
   11.1 General requirements
   11.2 Location and mounting
        11.2.1 Accessibility and maintenance
        11.2.2 Physical separation or grouping
        11.2.3 Heating effects
   11.3 Degrees of protection
   11.4 Enclosures, doors and openings
   11.5 Access to switchgear and to controlgear
        11.5.1 General
        11.5.2 Access to gangways
        11.5.3 Gangways in front of switchgear and controlgear
        11.5.4 Gangway and door restrictions
12 Conductors and cables
   12.1 General requirements
   12.2 Conductors
   12.3 Insulation
   12.4 Current-carrying capacity in normal service
   12.5 Voltage drop
   12.6 Flexible cables
        12.6.1 General
        12.6.2 Mechanical rating
        12.6.3 Current-carrying capacity of cables wound on drums
   12.7 Conductor wires, conductor bars and slip-ring assemblies
        12.7.1 Protection against direct contact
        12.7.2 Protective conductor circuit
        12.7.3 Protective conductor current collectors
        12.7.4 Removable current collectors with a disconnector function
        12.7.5 Clearances in air
        12.7.6 Creepage distances
        12.7.7 Conductor system sectioning
        12.7.8 Construction and installation of conductor wire,
               conductor bar systems and slip-ring assemblies
13 Wiring practices
   13.1 Connections and routing
        13.1.1 General requirements
        13.1.2 Conductor and cable runs
        13.1.3 Conductors of different circuits
        13.1.4 Connection between pick-up and pick-up converter
               of an inductive power supply system
   13.2 Identification of conductors
        13.2.1 General requirements
        13.2.2 Identification of the protective conductor
        13.2.3 Identification of the neutral conductor
        13.2.4 Identification by colour
   13.3 Wiring inside enclosures
   13.4 Wiring outside enclosures
        13.4.1 General requirements
        13.4.2 External ducts
        13.4.3 Connection to the hoisting machine and to moving
               elements on the hoisting machine
        13.4.4 Interconnection of devices on the hoisting machine
        13.4.5 Plug/socket combinations
        13.4.6 Dismantling for shipment
        13.4.7 Additional conductors
   13.5 Ducts, connection boxes and other boxes
        13.5.1 General requirements
        13.5.2 Percentage fill of ducts
        13.5.3 Rigid metal conduits and fittings
        13.5.4 Flexible metal conduits and fittings
        13.5.5 Flexible non-metallic conduits and fittings
        13.5.6 Cable trunking systems
        13.5.7 Hoisting machine compartments and cable trunking
               systems
        13.5.8 Connection boxes and other boxes
        13.5.9 Motor connection boxes
14 Electric motors and associated equipment
   14.1 General requirements
   14.2 Motor enclosures
   14.3 Motor dimensions
   14.4 Motor mounting and compartments
   14.5 Criteria for motor selection
   14.6 Protective devices for mechanical brakes
   14.7 Electrically operated mechanical brakes
15 Accessories and lighting
   15.1 Accessories
   15.2 Local lighting on the hoisting machine and for the
        equipment
        15.2.1 General
        15.2.2 Supply
        15.2.3 Protection
        15.2.4 Fittings
16 Marking, warning signs and reference designations
   16.1 General
   16.2 Warning signs
        16.2.1 Electric shock hazard
        16.2.2 Hot surfaces hazard
   16.3 Functional identification
   16.4 Marking of equipment
   16.5 Reference designations
17 Documentation
   17.1 General
   17.2 Information to be provided
   17.3 Requirements applicable to all documentation
   17.4 Installation documents
   17.5 Overview diagrams and function diagrams
   17.6 Circuit diagrams
   17.7 Operating manual
   17.8 Maintenance manual
   17.9 Parts list
18 Verification
   18.1 General
   18.2 Verification of conditions for protection by automatic
        disconnection of supply
        18.2.1 General
        18.2.2 Test methods in TN-systems
        18.2.3 Application of the test methods for TN-systems
   18.3 Insulation resistance tests
   18.4 Voltage tests
   18.5 Protection against residual voltages
   18.6 Functional tests
   18.7 Retesting
Annex A (normative) - Protection against indirect contact in
                      TN-systems
Annex B (informative) - Inquiry form for the electrical equipment
                        of hoisting machines
Annex C (informative) - Current-carrying capacity and overcurrent
                        protection of conductors and cables in the
                        electrical equipment of machines
Annex D (informative) - Conductor selection for intermittent duty
Annex E (informative) - Explanation of emergency operation functions
Annex F (informative) - Comparison of typical conductor cross-sectional
                        areas
Bibliography
Annex ZA (normative) - Normative references to international
                       publications with their corresponding
                       European publications
Annex ZZ (informative) - Coverage of Essential Requirements of EC
                         Directives
Annex ZZA (informative) - Coverage of Essential Requirements of
                          Directive 98/37/EC
Annex ZZB (informative) - Coverage of Essential Requirements of
                          Directive 2006/42/EC

IEC 60204-32 applies to the application of electrical and electronic equipment and systems to hoisting machines and related equipment. The equipment covered by this standard commences at the point of connection of the supply to the electrical equipment of the hoisting machine (crane-supply-switch) including systems for power supply and control feeders situated outside of the hoisting machine, for example, flexible cables or conductor wires or conductor bars. This standard is applicable to equipment or parts of equipment not exceeding 1 000 V a.c. or 1 500 V d.c. between lines and with nominal frequencies not exceeding 200 Hz. For the purposes of this standard, hoisting machines include cranes of all types, winches of all types, and storage and retrieval machines. It includes the following significant technical changes with respect to the previous edition: - deletion of Clause 11 of the previous edition; - modification of the structure of equipotential bonding (Clause 8); - separation of control functions (Clause 9) and devices (Clause 10); - structure of technical documentation (Clause 17); - verification of protection by automatic disconnection of supply (18.2); - Subclause 9.2.7 on cableless controls has been modified.