Electrical Cables And Connectors Flashcards

1
Q

Single wire

A

Used in aircraft
Wire is only used to support the electrical current to the load and then back through the aluminium structure to the generator or battery

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2
Q

Wire

A

An insulated single copper conductor surrounded by insulation.

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3
Q

Copper conductor wire

A

gives Maximum wire flexibility

Are tinned which protects the wire from corrosion

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4
Q

Aluminium conductors wire

A

takes a Large load

saves weight

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5
Q

Electrical cables lnsulation properties

A
can with stand Voltage resistance up to 600
Resistance against aircraft fluids 
Flexible 
Strong 
Light weight
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6
Q

Temature range insulation

A

Up to 100/150 degrees normal
Up to 250 degrees high temp
Up to 400 degrees fire resistance
At 1093 the degrees the insulation starts to break down after 5 minutes

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7
Q

Stranded copper wire

A

Conductor most common type of wire used

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8
Q

Aluminium cable conductors

A

Are Used for large loads like galleys and have some limitations of use

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9
Q

wires with larger an size 8 AWG are

A

Not for use in engines
Not for use on engines
Not for used in high vibrations

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10
Q

Shielded wire

A

Are used in systems to protect from any outside erratic or magnetic interference

Shielded at one side , creates a loop
Operating below 50 khz needs to be grounded at one end to prevent current back flow

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11
Q

Coaxial cable

A

Used to transport high frequency
Temp range -40 to 84

Best achieved when bolt sides are grounded

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12
Q

Identification code

A

Part number and system wire ID code are different
Part number from manfautre does not reflect circuit functionality
Only authorised cables
System wire ID printed on cable my company

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13
Q

Part number have on

A
Wire type 
Manufacturers 
County 
Year 
Wire size
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14
Q

Breaking down part number

A

Class begins with C C3
Wire size at the end
Type T4

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15
Q

Wire identification

A
The circuit belongs to 
Size 
Any other information relating to the wiring diagram
Shielded or not 
Company puts on after manufacture
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16
Q

Wire marking machine

A

Mechanical printing with heat ans colour foil
Ink jet - printer
C02 laser
Uv laser

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17
Q

Cable

A

2 or more wires

18
Q

Wired ID

A
Wire bundle number 
System code 
Wire number 
Size 
Colour code 
In that order
19
Q

Wire marking

A

Each end within 3 inches on end

20
Q

System letter

A

2 letter system
First the system
2nd sub system
Used to identify the system by a wire

21
Q

ATA chapter 100

A

Uses numbers instead of letters

22
Q

System wire ID special

A

Sone wires cant be marked without damaging insulation
Insulation tubing will be printed before then installed on the wire

Shield wire
Thermo couple
Multi conductor wire
High temperature wire

23
Q

Current carrying capacity

A

Current capacity of a wire is dependant on the size and temp
If the temp decreases the maximum possible current in on wire will increase

24
Q

Currebt carrying capacity

A

If the temp decreases the maximum possible current in on wire will increase

25
Q

Aromatic polyamide AP

A
wire insulation 
Save weight and space 
Saves 50 wight and 30 space 
Smouldering at 815
Prone to Carbon arc tracking wet an dry causes it to blow up
26
Q

Dry tracking

A

Causes by a short circuit
Build of of carbon desposet
Causes a full power arc destroying the entire bundle

27
Q

Wet tracking

A

Aircaft fluid only

28
Q

Thermo couples

A

Egt exhaust gas themp
Dissimilar metals
To prevent confusion the thermo couple cable should never be red / blue insulation covering
Shouts be white/ green and white/red and red/yellow
Repaire alumel wires with alumel splices only
Use same metal n

29
Q

Fire warning wires

A

Red or white.

30
Q

Electoral connectors

A

Used to facilitate maintenance when frequent disconnect is required
Contacts are pins
Plug houses the pins and receptacle housing sockets
The live side has pins to stop people touching it
Live side the receptacle

31
Q

Connector categories

A

Split shell

Assembled connector

32
Q

Split shell

A

Come disacempled
Glass K made from steel Is fire proof
Class A-D made of aluminium
Identification by AN number

33
Q

Assemble connector

A

Most Common type
Consist of one part
Only the backing clamp is separate and has a different part number to the connector
So both parts are ordered separate

34
Q

Connector insulation

A

Master key way , main grove ,

The master key way should be at the top

35
Q

Contact arrangement / configuration

A

Goes anti clock wise

Every 10th contact is bracketed or dotted or circled

36
Q

Environmental sealing

A

Contact is inserted and locked
Sealing across the mating faces or the plug and receptacle
Sealed when a wire or seal plug installed

Optimum environment seal is achieved when all 3 positions are sealed

37
Q

Seal plunged

A

Unused holes filled with nylon or Teflon in an unpresired ares
In conjunction with seal plugs

38
Q

Polarisation key

A

Prevent the wrong computer being installed into a shelf.
Three posts , different shapes , must match so computer can be installed
Can be rotated in 6 positions

39
Q

Coaxial connectors types

A

Soldered coaxial connectors

Crimped connectors

40
Q

Connector locking

A

Connector is wire locked to keep in place in high vibrations
Wire lock plug to scocked

Can only wire locking stuff less than 15 cm away
If receptacle has no holes for wire locking the connector can be wire locked to structure