ISO 14990-2:2016
Earth-moving machinery — Electrical safety of machines utilizing electric drives and related components and systems — Part 2: Particular requirements for externally-powered machines
ISO 14990-2:2016 the particular safety requirements for the electrical equipment and its components incorporated in externally-powered (mains-connected, including machines powered by external dedicated generators), electrically-driven earth-moving machines (EMMs).
It is applicable to those machines using on-board voltages in the range of 50 V?36 kV AC r.m.s. at any frequency and 75 V?36 kV DC ? including any repetition rate of pulsating DC ? intended for outdoor use. Voltages occurring within devices are not considered to be on-board voltages and are thus not within its scope.
It is intended to be used in conjunction with ISO 14990‑1, which gives general requirements for EMMs regardless of how they are powered. Requirements specific to self-powered machines are given in ISO 14990‑3. However, it is possible for an EMM to be both self-powered and externally-powered (e.g. a battery-powered machine having a built-in charger with power supply function), in which case ISO 14990‑3 is also applicable.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
4 General requirements
4.1 General
4.2 Special conditions
4.3 Supplies
4.3.1 AC supplies
4.3.2 DC supplies
5 Protection against electric shock hazards
5.1 General
5.2 Guidance for type of neutral earthing system
6 Protection against electrical fire hazards
7 Protection against thermal hazards
8 Protection against mechanical hazards
9 Protection against abnormal operation hazards
9.1 General
9.2 Supply conductors
9.3 Socket outlets
9.4 Protection against supply interruption or voltage reduction and subsequent restoration
9.5 Phase sequence protection
9.6 Protection against overvoltages due to lightning and to switching surges
10 Electric power source
10.1 Incoming supply conductor terminations
10.2 Terminal for connection to the external protective earthing system
10.3 Protection against unauthorized, inadvertent and/or mistaken connection
11 Wiring
11.1 Flexible cables
11.2 Conductor wires, conductor bars, and slip-ring assemblies — Clearances
11.3 Connections and routing — Conductor and cable runs
11.4 Connection to moving elements of the EMM
12 Electric motors
12.1 Criteria for motor selection or design
13 Non-motor loads
14 Controls
14.1 Control circuit supply
15 Manuals and documentation
15.1 Information to be provided
15.2 Installation documents
16 Marking
16.1 Marking of equipment
17 Tests
Annex A (informative) Enquiry form for electrical equipment of externally-powered machines
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
4 General requirements
4.1 General
4.2 Special conditions
4.3 Supplies
4.3.1 AC supplies
4.3.2 DC supplies
5 Protection against electric shock hazards
5.1 General
5.2 Guidance for type of neutral earthing system
6 Protection against electrical fire hazards
7 Protection against thermal hazards
8 Protection against mechanical hazards
9 Protection against abnormal operation hazards
9.1 General
9.2 Supply conductors
9.3 Socket outlets
9.4 Protection against supply interruption or voltage reduction and subsequent restoration
9.5 Phase sequence protection
9.6 Protection against overvoltages due to lightning and to switching surges
10 Electric power source
10.1 Incoming supply conductor terminations
10.2 Terminal for connection to the external protective earthing system
10.3 Protection against unauthorized, inadvertent and/or mistaken connection
11 Wiring
11.1 Flexible cables
11.2 Conductor wires, conductor bars, and slip-ring assemblies — Clearances
11.3 Connections and routing — Conductor and cable runs
11.4 Connection to moving elements of the EMM
12 Electric motors
12.1 Criteria for motor selection or design
13 Non-motor loads
14 Controls
14.1 Control circuit supply
15 Manuals and documentation
15.1 Information to be provided
15.2 Installation documents
16 Marking
16.1 Marking of equipment
17 Tests
Annex A (informative) Enquiry form for electrical equipment of externally-powered machines
Bibliography