ISO 6858:2017
Aircraft — Ground support electrical supplies — General requirements
ISO 6858:2017 specifies the electrical output characteristics and interface requirements between an aircraft and ground support electrical supplies. This includes all external electric power generation facilities, provided as part of a central source or in point-of-use application. Requirements for safety features are also included. Performance and safety issues under regional control are not addressed in this document. Requirements for ground traffic control purposes, such as towing points, identification and warning lights, etc. are also excluded.
The electrical characteristics relate to nominal 28 V DC and either 115/200 V or 230/400 V three-phase, 400 Hz AC outputs measured at the aircraft attaching connector as indicated in Figure 1.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical basis
5 Electrical characteristics
5.1 General
5.1.1 Overview
5.1.2 Alternating current (AC) power sources
5.1.3 Direct current (DC) power sources
5.2 Interface connector
5.3 Electromagnetic interference
5.3.1 Utility interface
5.3.2 Aircraft interface
5.4 AC steady-state output characteristics
5.4.1 General
5.4.2 Steady-state AC load characteristics
5.4.3 Steady-state AC voltage performance
5.5 AC transient characteristics
5.5.1 General
5.5.2 Transient AC load characteristics
5.5.3 Transient AC voltage
5.5.4 Transient frequency
5.6 DC steady-state output characteristics
5.6.1 Steady-state DC load characteristics
5.6.2 Steady-state voltage
5.6.3 Voltage ripple
5.7 DC transient characteristics
5.7.1 Transient DC load characteristics (other than engine start-related)
5.7.2 Transient DC voltage
5.7.3 Engine starting output characteristics
6 Electrical protection
6.1 General
6.2 AC system protection
6.2.1 Overvoltage
6.2.2 Undervoltage
6.2.3 Frequency
6.2.4 Overcurrent and short circuits
6.2.5 Phase sequence
6.2.6 DC content
6.2.7 Open neutral/phase conductors
6.2.8 Earth/Ground fault
6.3 DC system protection
6.3.1 Overvoltage
6.3.2 Undervoltage
6.3.3 Reverse polarity
6.3.4 Reverse current
6.3.5 Overcurrent and short circuits
7 Control circuit and supply
7.1 Control circuits
7.2 Aircraft interlock supply for AC facilities
7.2.1 General
7.2.2 Interlock signal characteristics
7.2.3 Maintenance mode
8 Test requirements
9 Safety requirements
9.1 General
9.2 Mechanical safety features
9.2.1 Hot temperatures
9.2.2 Fuel tank
9.2.3 Exhaust
9.2.4 Foreign object ingestion
9.2.5 Control panel
9.2.6 Ergonomics
9.2.7 Fire fighting
9.3 Electrical safety features
9.3.1 Overload
9.3.2 Fault conditions
9.3.3 Trip switch
9.3.4 Earthing
9.3.5 Facility with electrical supply
9.4 Features to safeguard personnel
9.4.1 General
9.4.2 Electrical contact
9.4.3 Anti-arcing protection
9.4.4 Noise
9.4.5 Vibration
10 General design features
10.1 Environmental conditions
10.2 Life expectancy
10.3 Manufacturing, service and support features
10.3.1 General
10.3.2 Material, parts and processes
10.3.3 Moisture and fungus resistance
10.3.4 Corrosion of metal parts
10.3.5 Workmanship
10.3.6 Product enclosures
10.3.7 Service access for adjustments and repairs
10.3.8 Interchangeability and replaceability
11 Installation, operation and maintenance
12 Labelling
Annex A (normative) Acceptable test listing for AC facilities
Annex B (normative) Acceptable test listing for DC facilities
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical basis
5 Electrical characteristics
5.1 General
5.1.1 Overview
5.1.2 Alternating current (AC) power sources
5.1.3 Direct current (DC) power sources
5.2 Interface connector
5.3 Electromagnetic interference
5.3.1 Utility interface
5.3.2 Aircraft interface
5.4 AC steady-state output characteristics
5.4.1 General
5.4.2 Steady-state AC load characteristics
5.4.3 Steady-state AC voltage performance
5.5 AC transient characteristics
5.5.1 General
5.5.2 Transient AC load characteristics
5.5.3 Transient AC voltage
5.5.4 Transient frequency
5.6 DC steady-state output characteristics
5.6.1 Steady-state DC load characteristics
5.6.2 Steady-state voltage
5.6.3 Voltage ripple
5.7 DC transient characteristics
5.7.1 Transient DC load characteristics (other than engine start-related)
5.7.2 Transient DC voltage
5.7.3 Engine starting output characteristics
6 Electrical protection
6.1 General
6.2 AC system protection
6.2.1 Overvoltage
6.2.2 Undervoltage
6.2.3 Frequency
6.2.4 Overcurrent and short circuits
6.2.5 Phase sequence
6.2.6 DC content
6.2.7 Open neutral/phase conductors
6.2.8 Earth/Ground fault
6.3 DC system protection
6.3.1 Overvoltage
6.3.2 Undervoltage
6.3.3 Reverse polarity
6.3.4 Reverse current
6.3.5 Overcurrent and short circuits
7 Control circuit and supply
7.1 Control circuits
7.2 Aircraft interlock supply for AC facilities
7.2.1 General
7.2.2 Interlock signal characteristics
7.2.3 Maintenance mode
8 Test requirements
9 Safety requirements
9.1 General
9.2 Mechanical safety features
9.2.1 Hot temperatures
9.2.2 Fuel tank
9.2.3 Exhaust
9.2.4 Foreign object ingestion
9.2.5 Control panel
9.2.6 Ergonomics
9.2.7 Fire fighting
9.3 Electrical safety features
9.3.1 Overload
9.3.2 Fault conditions
9.3.3 Trip switch
9.3.4 Earthing
9.3.5 Facility with electrical supply
9.4 Features to safeguard personnel
9.4.1 General
9.4.2 Electrical contact
9.4.3 Anti-arcing protection
9.4.4 Noise
9.4.5 Vibration
10 General design features
10.1 Environmental conditions
10.2 Life expectancy
10.3 Manufacturing, service and support features
10.3.1 General
10.3.2 Material, parts and processes
10.3.3 Moisture and fungus resistance
10.3.4 Corrosion of metal parts
10.3.5 Workmanship
10.3.6 Product enclosures
10.3.7 Service access for adjustments and repairs
10.3.8 Interchangeability and replaceability
11 Installation, operation and maintenance
12 Labelling
Annex A (normative) Acceptable test listing for AC facilities
Annex B (normative) Acceptable test listing for DC facilities
Bibliography