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BSI 23/30457024 DC 2023

BSI 23/30457024 DC 2023

$24.66

BS EN 3197. Aerospace series. Design and installation of aircraft electrical and optical interconnection systems

Published By Publication Date Number of Pages
BSI 2023 133
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PDF Catalog

PDF Pages PDF Title
13 1 Scope
2 Normative references
14 3 Terms and definitions
4 Limitations
15 5 General requirements
5.1 Applicable rulemaking
5.1.1 General
5.1.2 Large aeroplanes
5.1.3 Small and medium aeroplanes including unmanned air vehicles
5.1.4 Rotary craft
5.1.5 Aircraft engines
5.2 EWIS definition
16 5.3 OFIS definition
17 5.4 Design precedence
18 5.5 Selection considerations
5.6 Service life
5.7 Smoke and fire hazards
19 5.8 Short-circuit and arc-tracking
5.8.1 General
5.8.2 Short-circuit description
5.8.2.1 Cause
20 5.8.2.2 Effects on electric cable looms
5.8.3 Arc-tracking description
5.8.3.1 Cause
21 5.8.3.2 Effects on electric cable looms
5.8.4 Arc-tracking phenomenon
5.8.4.1 GeneralĀ ā€” Initiation of arc phenomenon for test purposes
5.8.4.2 Wet arc trackingĀ ā€” Moisture or electrolyte-initiated tracking
22 5.8.4.3 Electrical erosion
5.8.4.4 Dry tracking
23 5.8.4.5 Wet short-circuit test
5.8.4.6 Notes on arc characteristics
5.9 Installation groups
24 5.10 Maintenance considerations
5.11 Materials and parts considerations
5.11.1 General
5.11.2 Environmental directives
25 5.11.3 Metals
5.11.4 Dissimilar metals
5.11.5 Non-metals
5.12 Quality
5.12.1 Components qualification
26 5.12.2 Processes qualification
5.12.3 Test methods
5.13 Specific requirements
5.13.1 Advice
5.13.2 Power plant
5.13.2.1 General
27 5.13.2.2 Connectors
5.13.2.3 Wiring and fastening
5.13.2.4 Installation
28 5.13.2.5 Separation
29 5.13.3 Rotorcraft
5.13.3.1 General
5.13.3.2 Connectors
30 5.13.3.3 Components
5.13.3.4 Wiring and fastening
31 5.13.4 Light aircraft
5.13.5 APU
5.13.6 Composite structures
5.13.6.1 Electrical implication
32 5.13.6.2 Thermal implication
5.13.6.3 Installation considerations
5.13.6.4 Electrical structure network (ESN)
6 Selection of EWIS and OFIS components
6.1 Applicable rulemaking
33 6.2 Special requirements
6.2.1 Commonality
6.2.2 Maintenance, repair or modification
6.2.3 Materials
6.3 Electrical and fibre optic cable selection
6.3.1 Environment
34 6.3.2 Type of cable
6.3.3 Electrical cables
6.3.3.1 Conductors
35 6.3.3.2 Insulating materials
6.3.3.3 Screen
6.3.3.4 Jacket
36 6.3.4 Voltage and current ratings
6.3.4.1 Voltage rating
6.3.4.2 Current ratings
6.3.5 Equipment cable
6.3.6 Airframe cable
6.3.7 Fireproof and fire-resistant cable
37 6.3.8 Coaxial cable
6.3.9 Data bus cable
6.3.10 Thermocouple or extension cable
6.3.11 Fibre optic cables
6.3.11.1 General
38 6.3.11.2 Construction
39 6.3.11.3 Special Installation requirements
6.3.12 Special cable types
6.3.12.1 Armament and electro explosive cables
40 6.3.12.2 Fuel probe wiring
6.3.12.3 Signal wiring and other low power sensitive circuit wiring
6.3.12.4 Primary electrical power systems wiring
6.3.12.5 Other special cable types
6.4 Connector selection
6.4.1 Environment
6.4.2 Types of connectors
6.4.2.1 Circular types
41 6.4.2.2 Rectangular types
6.4.3 Construction
6.4.3.1 Housing
42 6.4.3.2 Inserts
6.4.3.3 Polarization of connectors
6.4.4 Electrical contacts
6.4.4.1 Selection and use of connectors
43 6.4.5 Fibre optic termini
6.4.6 Cable outlet accessories
6.4.7 Connector voltage ratings
44 6.5 Circuit protective devices selection
6.5.1 Type of protective devices
6.5.2 Electrical protection
6.5.2.1 General
6.5.2.2 Essential characteristics of protection devices
45 6.5.2.3 Cable and protection devices compatibility principle
6.5.2.4 Rating choice
47 6.5.3 Circuit Breaker
48 6.5.4 Arc Fault Circuit Interrupter
6.5.5 Arc Fault Circuit Breaker
6.5.6 Remote Control Circuit Breaker
6.5.7 Solid State Circuit Breaker
6.5.8 Residual Current Device (RCD)
6.5.9 Fuse
49 6.6 Switching devices selection
6.6.1 Type of switching devices
6.6.2 Electrical switching
6.6.2.1 General
6.6.2.2 Low level switching
50 6.6.2.3 Essential characteristics of switching devices
6.6.3 Interrupter
6.6.4 Switch
6.6.5 Push-button
6.6.6 Relays and micro-contactors
6.6.6.1 Definition and requirement
51 6.6.6.2 Configuration examples
52 6.6.6.3 Inductance effects of relays
6.6.6.4 Coil operating voltage values
6.6.7 Contactor
6.6.8 Switching High Voltage DC Circuits
6.7 Terminal junction systems
6.7.1 Definition and requirements
53 6.7.2 Environmental
6.7.3 Design
6.7.3.1 General
6.7.3.2 Selection criteria
6.7.3.3 Modules
54 6.7.3.4 Feedback modules
6.7.3.5 Feed-through modules (jiffy junctions)
6.7.3.6 Contact arrangement
6.7.3.7 Material and plating
6.7.3.8 Grommet sealing
6.7.4 Mounting frames
6.7.5 Other types of modules
55 6.8 Terminal lugs selection
6.8.1 Definition and requirements
6.8.2 Selection criteria
6.8.3 Inspection
56 6.9 Splices selection
6.9.1 General
6.9.1.1 Splices in general
57 6.9.1.2 Functions of splices
6.9.2 Definition and requirements
58 6.9.3 Installation constraints
6.9.4 General notes on splices
6.9.5 Screened cable splices
6.9.6 Quick disconnect splices
59 6.9.7 Closed end splices
6.9.8 Splices for fibre optic cables
6.9.9 Inspection
6.10 Solder sleeves selection
6.10.1 Description
6.10.2 Solder and flux
6.10.3 Solder sleeve selection
60 6.10.4 Selection criteria
6.11 Feedthrough Selection (Pressure Bung housing assemblies)
6.11.1 General
6.11.2 Selection criteria
6.11.3 Design
6.12 Clamp selection
6.12.1 General
61 6.12.2 Selection of ā€œPā€ clamps
6.12.3 Selection of ā€œĪ©ā€ clips
6.13 Protective parts selection
6.13.1 General
6.13.2 Selection criteria
62 6.14 Identification parts selection
6.14.1 General
6.14.2 Selection criteria
6.15 Installation components selection
6.15.1 Selection of cable ties
6.15.1.1 General
63 6.15.1.2 Plastic cable ties
64 6.15.1.3 Metallic cable ties
6.15.1.4 Lacing tapes
6.15.1.5 Adhesive tapes
6.15.1.6 Lacing sheath
6.15.2 Tapes
6.15.3 Raceways and cable tray
6.15.3.1 General
65 6.15.3.2 Cable tray
6.15.3.3 Raceway
6.15.3.4 Harpoons
6.15.3.5 Fairlead
6.15.3.6 Cable retainer
6.16 Junction boxes
6.16.1 General
6.16.2 Construction
66 6.16.3 Inside wiring
6.16.4 Identification
7 Components Identification
7.1 Applicable rulemaking
7.2 General
67 7.3 Component manufacturer marking ā€“ Part number
7.3.1 Component manufacturer identification
7.3.2 Alternate manufacturer identification
7.3.3 Identification intervals
7.3.4 Types of wire manufacturer markings
7.4 Airframer component function marking ā€“ Function identification number
7.4.1 Airframe manufacturer identification
68 7.4.2 Identification intervals
7.4.3 Types of airframe manufacturer markings
7.5 Identification of EWIS and OFIS bundles ā€“ Airframer identification ā€“ Routing
7.5.1 Routing identification
69 7.5.2 Types of routing identification
7.5.3 Visible identification of critical design configuration limitations
7.6 Identification of equipments
70 7.7 Identification of user EWIS and OFIS modification or repair ā€“ Operators identification coding
8 Separation and principles to apply
8.1 Applicable rulemaking
8.2 General requirements
8.2.1 General
71 8.2.2 Segregation of functions
8.2.3 Separation of different high voltage systems
8.2.4 General
8.2.5 Separation by physical distances versus separation by barrier
72 8.2.6 Determination of separation
8.2.7 Separation from personnel and cargo
73 8.2.8 Electromagnetic interference (EMI)
8.2.9 Separation from flammable fluids
8.2.10 Separation from water waste
8.2.11 Separation from flight controls
8.2.12 Separation from high temperature equipment
74 8.2.13 Redundant system separation
8.3 Electrical requirements
8.3.1 Voltage drop
8.3.2 Coaxial and bus cable attenuation
8.3.3 Ground electrical return
8.3.3.1 General
75 8.3.3.2 Metallic aircraft
8.3.3.3 Composite aircraft
8.3.4 Electromagnetic Compatibility (EMC)
8.3.5 Grounding of screened cables
8.3.6 Compass deviation
8.3.7 Corona effect prevention
8.3.7.1 General information
76 8.3.7.2 Partial discharge consequences
8.3.7.3 Minimum distance between live items
77 8.3.8 High voltage AC. and DC. networks
8.3.8.1 Aircraft power and control system
8.3.8.2 High Voltage Distributed Power Systems
8.4 Ignition
8.4.1 Magneto type
8.4.2 Ignition High Energy/High Voltage (HE/HV)
78 8.5 Mechanical requirements
8.5.1 Cable handling
8.5.2 Cable on engines (see 5.13.2 ā€œPower plantā€ for further details)
8.6 Environmental requirements
8.6.1 Ambient temperature of installed harnesses
8.6.2 Cable in undercarriage bays
8.6.3 SWAMP areas
8.7 Fuel tanks requirements
8.7.1 Rational
79 8.7.2 Cables inside fuel tanks
8.7.3 Wiring segregation
8.7.4 Harness installation
8.7.5 Cable routing through fuel tanks
80 8.8 Fire zone
8.9 Attachment requirements
81 8.10 Fibre optic cable requirements
8.10.1 Installation
8.10.2 Attenuation
8.11 Size requirements
8.12 EWIS and OFIS installation
8.12.1 Zone categories
82 8.12.2 General rules
8.12.3 Protection against specific hazards
8.12.4 Separation between route categories and codes
8.12.4.1 Route categories
83 8.12.4.2 Route separation
8.12.4.3 Fuel quantity indicating system wiring
8.12.4.4 Signal wiring and other low power sensitive circuit wiring
8.12.4.5 Primary electrical power systems wiring
8.12.5 Panels and boxes
8.12.6 Cabin related harnesses
9 Installation and manufacturing principles
9.1 Applicable Rulemaking
9.2 Security against high voltage
84 9.3 General principles of cable routing
9.3.1 Arrangement of cables
9.3.2 Dead endings
9.3.3 Drip loop and slack in cabling
85 9.4 Arrangement and installation of power routes
9.4.1 Feeder route
9.4.2 Power route
9.4.3 Power supply of equipment
9.5 Minimum bending radius requirements
9.5.1 General
86 9.5.2 Method
9.5.3 Bend radius for a standard wire or cable used alone
87 9.5.4 Bend radius for an electrical transmission cable used alone
88 9.5.5 Bend radius for fibre optic cables
9.5.6 Bend radius for bundles or harnesses
89 9.5.7 Bend radius for bundles or harnesses in hinge area
9.5.8 Service loop for equipment removing (ā€œblindā€ mounting)
9.6 Cable preparation
9.6.1 Marking
9.6.2 Cutting to length
90 9.6.3 Stripping
9.7 Supports
9.7.1 Cabling support
9.7.2 Support at connectors
9.7.2.1 General
9.7.2.2 Cabling Support at connectors without back shell primary support
91 9.7.3 Cable supports
9.7.4 Installation of ā€œPā€ clamps
9.7.5 Adhesive clamps
92 9.7.6 Installation of Omega clips
9.8 Connectors and accessories
9.8.1 Installation
9.8.1.1 Mounting details
9.8.1.2 Sealing plugs and dummy contacts
93 9.8.1.3 Adjacent locations
9.8.1.4 Cable sealing
9.8.2 Precautions to ensure correct connector mating
9.8.2.1 Connections installation/removal
9.8.2.2 Cross coupling of connections
9.8.2.3 Precautions by routing
94 9.8.2.4 Precautions by chains
9.8.3 Terminals
9.8.3.1 Soldered terminations
95 9.8.3.2 Crimped terminations
9.8.3.3 Fibre optic terminations (Termini)
96 9.8.4 User control tests for terminals and splices (electrical)
9.8.4.1 Routine inspection
97 9.8.4.2 Inspection and testing of fibre optic terminations
9.8.5 Fibre optic connectors
98 9.9 Splices
9.9.1 In-line splices
9.9.2 Step-down splices
9.9.3 Insulated splices
9.9.4 Low air density splices
9.9.5 Location of splices
99 9.9.6 Support of splices
9.9.7 Post-insulation of splices
9.9.8 Recording procedure for splices
9.10 Solder sleeve termination
9.10.1 Installation
100 9.10.2 Inspection
9.11 Terminal lugs
9.11.1 Installations
101 9.11.2 Terminal lug on screw or stud fixing
9.11.3 Torque values
9.12 Fixing
9.13 Use of separators
102 9.14 Installation of non-coded equipment
9.15 Harness mixing
9.16 Bundle diameter
103 9.17 Tying
9.17.1 Tools
9.17.2 Breakouts
9.17.3 Cable tie positioning
9.17.4 Transportation cable ties
9.17.5 Lacing
9.17.6 Route identification
104 9.18 Spare provision
9.19 Harness twisting
9.20 Use of conduits
9.20.1 General
105 9.20.2 Filling ratios
9.21 Use of sleeves
106 9.22 Split conduits or sleeves
9.23 Over screening
9.23.1 General
107 9.23.2 Internal protection
9.23.3 External protection
9.23.4 Exit attachment
9.24 Tape
9.24.1 Cases for use
108 9.24.2 Type of tapes
9.25 Protection between cables and metallic parts
9.26 Panels and boxes
9.27 Feedthrough installation
109 9.28 Terminal junctions
9.28.1 Installation
9.28.2 Installation area
110 9.29 Locking of standard electrical and fibre optic items
9.30 Bonding points ā€“ Lightning protection
9.30.1 Bonding
111 9.30.2 Direct lightning strike
9.30.3 Indirect lightning strike
9.30.4 High Intensity Radiated Fields (HIRF)
9.30.5 Fault protection
112 9.30.6 Safety
9.30.7 Static
9.31 GroundingĀ ā€“ Current return
9.32 Potting
113 10 Modification and repairs by Supplementary Type Certification applicants (STC)
114 11 EWIS and OFIS safety
11.1 Applicable rulemaking
11.2 Recommendation
115 AnnexĀ A (informative)ENĀ 3197 detailed content
117 AnnexĀ B (informative)Main normative references and ASD-STAN Technical Reports per family of products
B.1 Quality and general standards
B.1.1 Quality
B.1.2 Vocabulary
B.1.3 Installation
B.1.4 General standards
118 B.2 Wires and cables
B.2.1 Test methods
B.2.2 Product standards
B.2.2.1 Conductor standards
B.2.2.2 135Ā Ā°C wires
B.2.2.3 150Ā Ā°C wires and cables
B.2.2.4 180Ā Ā°C wires and cables
119 B.2.2.5 180Ā Ā°C wires and cables with aluminium or CCAL conductors
B.2.2.6 200Ā Ā°C wires and cables
B.2.2.7 260Ā Ā°C wires and cables
B.2.2.8 Fireproof and fire-resistant wires and cables
120 B.2.2.9 Coaxial cables
B.2.2.10 Databus Cables
B.2.2.11 Thermocouple wires and cables
B.2.3 Implementation standards
B.2.4 Particular documents
B.3 Fibre optic cables, connectors and termini
B.3.1 Fibre optic cables
B.3.1.1 Test methods
B.3.1.2 Product standards
B.3.1.3 280Ā Ī¼m diameter cladding
B.3.1.4 125Ā Ī¼m diameter cladding
121 B.3.1.5 Implementation standards
B.3.1.6 Particular documents
B.3.2 Fibre optic connectors and termini
B.3.2.1 Test methods
B.3.2.2 Product standards
B.3.2.3 Particular documents
B.4 Connectors, contacts and termini
B.4.1 Test methods
122 B.4.2 Product standards
B.4.2.1 Circular types, threaded coupling:
B.4.2.2 Circular types, bayonet coupling:
B.4.2.3 Rectangular types
123 B.4.2.4 Rectangular types, rack and panel
B.4.2.5 Rectangular types, modular
B.4.2.6 Coaxial connectors
B.4.2.7 Contacts
B.4.2.8 Cable outlet accessories
B.4.2.9 Sealing sleeves
B.4.2.10 Sealing plugs
124 B.4.3 Implementation standards
Crimping tools and associated accessories
B.4.4 Particular documents
B.5 Protective devices
B.5.1 Test Methods
B.5.2 Product Norms
B.5.2.1 Circuit breaker single-pole without signal contact
B.5.2.2 Circuit breaker three-pole without signal contact
B.5.2.3 Circuit breaker single-pole with signal contact
125 B.5.2.4 circuit breaker three-pole with signal contact
B.5.3 Implementation standards
B.6 Switching devices
B.6.1 Test methods
B.6.2 Product standards
B.6.3 Implementation standards
B.7 Terminal junctions
B.7.1 Test methods
B.7.2 Product standards
B.7.2.1 Modular interconnection systems
B.7.3 Implementation standards
B.7.3.1 Crimping tools and associated accessories
126 B.7.4 Particular documents
B.8 Terminal lugs and in-line splice
B.8.1 Test methods
B.8.2 Product standards
B.8.2.1 For crimping on electric conductors
B.8.2.2 Implementation standards
B.9 Ties
B.9.1 Test methods
B.9.2 Product standards
B.9.2.1 Plastic cable ties
B.9.3 Implementation standards
B.10 Solder sleeves
B.10.1 Test methods
B.10.2 Product standards
127 B.10.3 Implementation standards
B.11 Bonding leads
B.11.1 Test methods
B.11.2 Product standards
B.11.2.1 Bonding straps with terminal lugs crimped on both ends
B.12 Clamps
B.12.1 Test methods
B.12.2 Product standards
B.12.3 Implementation standards
B.13 Protective parts
B.13.1 Test methods
B.13.2 Product standards
B.13.2.1 Protection sleeve in meta-aramid fibres
128 B.13.2.2 Wrap around electrical sleeving
B.13.3 Implementation standards
B.14 Identification parts
B.14.1 Test methods
B.14.2 Product standards
B.14.2.1 Protection sleeve in meta-aramid fibres
B.14.2.2 Wrap around electrical sleeving
B.14.3 Implementation standards
B.15 Installation components
B.15.1 Test methods
B.15.2 Product standards
B.15.3 Implementation standards
129 B.16 Lamps
B.16.1 Test methods
B.16.2 Product standards
B.16.2.1 Lamps, incandescent
B.16.2.2 Lamps, electroluminescent
B.16.3 Implementation standards
130 AnnexĀ C (informative)Differences of electrochemical potentials between some conductive materials (in mV)

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BSI 23/30457024 DC 2023
$24.66