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Trains > Traction > Flashcards

Traction Flashcards

1
Q

How many vehicles are in a class 455 formation?

A

4 cars per unit

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2
Q

Whst is the maximum speed of a class 455 train?

A

Maximum speed 75mph.

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3
Q

What is the length of a class 455 coach?

A

Length of a 455 coach is 20 meters.

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4
Q

How many traction motors does a class 455 has per Motor Coach?

A

A class 455 has X4 250HP traction motors per Motor Coach.

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5
Q

What is the maximum formation of only class 455 units that can be coupled together?

A

Maximum total formation of only class 455 units is a total of X8 coaches in the formation.

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6
Q

What type of coupler does a class 455 unit have?

A

External identification

A class 455 has a tight lock coupler

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7
Q

What is the maximum formation made up of class 455 + 456 traction units?

A

Maximum length formation of class 455 + 456 traction units is 10 coaches.

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8
Q

What other traction units may a class 455 fully couple to?

A

A class 455 traction unit may fully couple to other class 455 units and class 456 units.

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9
Q

What addition equipment is needed to mechanically couple to a 444/450 traction unit?

What is the maximum speed after coupling and why?

A

You will require an Emergency Coupling Adapter. Maximum speed allowed after coupling is 5mph, due to only being mechanically coupled and not additionally electrically coupled.

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10
Q

What does these terms mean in regards to the individual coaches

  • DT A
  • MC
  • NDT
  • DT B
A

Coach identifying names

  • Driving Trailer A
  • Motor Coach
  • Non Driving Trailer
  • Driving trailer B
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11
Q

What is the name of these 2 items on the class 455 traction unit?

A

455 external identification

  • 1 = 42 way control jumper (oragne). Provides electrical power.
  • 2 = Main reservoir pipe & main reservoir isolation cock (yellow)
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12
Q

External identification Class 455

What is the name of item 1 on this class 455 traction unit?

What position is A & B?

A

External identification Class 455

  • 1 = Drumswitch
  • A = Coupled
  • B = Uncoupled
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13
Q

External Identification Class 455

What is the name of this item?

What 3 outputs does it produce?

A

External identification Class 455

The motor alternator runs continuously when the unit is cut in and produces 3 outputs used as follows:

  • 415 volts A.C. Heating fans (including cab fans)
  • 240 volts A.C. Lighting
  • 110 volts A.C. Control circuits, Battery charging, Emergency lighting

As the 110 volt supply needs to be DC, it is passed through a rectifier which changes it from alternating current (A.C.) to direct current (D.C.)

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14
Q

Motor alternator failure Class 455

If the MA fails and the battery takes over, how many volts does it need to drop below before the unit cuts out?

A

Motor alternator failure Class 455

If the MA fails, the batteries will take over but will only supply 110 DC volts for the control circuits and emergency lighting. When the battery voltage drops below 80 volts the unit will automatically cut out.

If this happens, assistance will be required whereupon after coupling up all the pipes and jumpers, you will need to cut the defective unit in again using the aux set button on the good unit.

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15
Q

Motor alternator failed indication Class 455

What indications will you get if the motor alternator fails?

A

Motor alternator failed indication Class 455

  • Only one marker / tail light
  • No main lights
  • No cab fans
  • MA fault indicator illuminated (Red light)
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16
Q

MA fault indicator indications Class 455

Your motor alternator has developed a fault. what is the meaning of the following displayed by the MA fault indicator?

  • Red light extinguished?
  • Red light illuminated (steady light)?
  • Red light illuminated flashing?
A

MA fault indicator indications Class 455

  • Red light extinguished / MA working normally. (Healthy)
  • Red light illuminated (steady light) / MA failed on the unit displaying the red light.
  • Red light illuminated flashing / MA failed on the intermediate or and rear unit.
17
Q

MA mcb locations Class 455

What cupboard is the MA mcb located & on what coach?

A

MA mcb locations Class 455

Drivers may be asked to check the status of the “MA” mcb located in the Control cupboard of the Motor Coach and reset if necessary as instructed.

18
Q

Motor alternator failure Class 455

The MA is protected by an over Speed Relay and Fault Flag. Which coach & cupborad would you find it in. which 455 units is the fault flag not accessible in?

A

Motor alternator failure Class 455

The speed relay and fault flag is located in the control cupboard in the motor coach on 58XX units (Not accessible on 57XX & 59XX units). The MA will stop working should this relay trip. Phone a friend may ask you to reset the flag. This can be reset once using a non-conductive object such as a pencil, if this fault reoccurs you will need to seek further advice.

19
Q

MA Fault Class 455

If your motor alternater fails in a single unit 455, what will you require?

A

MA Fault Class 455

If the train is a single unit this action will initiate an emergency brake application and no on train communications, assistance will be required.

20
Q

Auxiliary Trip / Set Buttons Class 455

Where on a 455 unit would you find the Aux set/trip buttons?

A

Auxiliary Trip/Set Buttons Class 455

Auxiliary set/trip buttons are located in each driving cab and the Control Cupboard of the Motor Coach. Any of these buttons being pressed will result in all units in multiple being cut in or out as required.

21
Q

Auxiliary Selector Switch Class 455

on which coach is this switch located, what is its function & what is its correct position?

A

Auxiliary Selector Switch Class 455

Located on the Motor Coach. For normal operation, the switch will be in the “Normal” position. The “shed supply” position allows the maintenance staff to test 750 volt DC equipment on the unit but are unable to get traction power.

Drivers are not required to operate this switch but must check that it is in the correct position (normal) when preparing trains for service.

22
Q

Power Train Line Class 455

What equipment will become operative when the Auxiliary Contacters are closed?

A

Power Train Line Class 455

The following equipment will become operative when the Auxiliary Contactors are closed:

  • Motor Alternator
  • Compressors
  • Low level coach heat
  • Line light
23
Q

MCB Tripping And Resetting Procedures Class 455

What are the 3 different tripped positions can you find a MCB in?

A

MCB Tripping And Resetting Procedures Class 455

The picture below shows mcbs in the three different positions (from left to right).

  • Electrically tripped
  • Manually tripped
  • Normal position

Drivers are asked to include in their report the position of the mcb, prior to resetting when rectifying faults.

24
Q

MCB Tripping And Resetting Procedure Class 455

How would you reset a electrically tripped MCB?

A

MCB Tripping And Resetting Procedure Class 455

If electrically tripped, reset by pushing up to the off position before attempting to place down in the on position.

25
Q

Heating Class 455

When is High Level Heating made available?

What units is High Level Heating not available on?

A

Heating Class 455

High level heating is made available when the master switch is away from off and is distributed by roof mounted 415 volt A.C. fans. High level heating is not fitted to the following units:

  • 59XX
  • Ex 508 NDT coaches
26
Q

Acccessing The Ladder

What coach will you find the ladder?

What key will you need to access it?

A

Accessing The Ladder

The ladder is located in Driving Trailer A. You will need a ‘L’ Key to access the ladder

27
Q

Emergency Equipment Cupboard (Grill) Class 455

Where would you find the emergency equipemnt cupboard?

A

Emergency Equipment Cupboard (Grill) Class 455

Located in Driving Trailer A & B in the vestibule and contians:

  • “T” spanner
  • Spare ribbon fuses
  • Hook switch pole
  • Short circuit bar
  • Two paddles.
28
Q

Emergency And First Aid Cupboard Class 455

Where is the Emergency and First Aid Cupboard located?

What is in the cupboard?

A

Emergency And First Aid Cupboard Class 455

Located in Driving Trailer A in the vestibule next to the Motor Coach end.

  • First Aid
  • Cord
  • Rope
  • Axe
  • Saw
  • Hammer
  • Light shapes
29
Q

Brake Guage Cupboard

How many Break Gauge Cupboards per 4 car unit?

Where is the Break Guage Cupboard located?

A

Brake Gauge Cupboard

There is one Break Gauge Cupboard per 4 card unit. The Break Gauge Cupboard is located in the Non Driving Trailer NDT.

30
Q

Brake Gauge Cupboard

What items are located in the Break Gauge Cupboard?

A

Brake Gauge Cupboard

  • Control Supply MCB
  • WSP MCB
  • Main Res Governor
  • Break Gauge
31
Q

Brake Gauge Cupboard

Where would you find the Control Supply MCB?

A

Brake Gauge Cupboard

You will find the Controll Supply in the:

  • Control Cupboard
  • Brake Gauge Cupboard
32
Q

Control Cupboard

Where would you find the Control Cupboard?

A

Control Cupboard

Control Cupboard is located in the Motor Coach

33
Q

Control Cupboard

What items will you find in this Cupboard X8

A

Control Cupboard

You will find the following items:

  • Traction cut out switch (TCOS)
  • Control supply MCB*
  • MA flag 58XX only
  • MRG
  • Brake gauge
  • Aux trip Aux set
  • Converter protection circuit breaker
34
Q

Environment Cupboard

What additional items will you find in the environment cupboard in the motor coach x2?

A

Environment Cupboard

You will find the following items in this cupboard:

  • Traction Converter Protection Devices
  • Dynamic Brake Isolation Switch
35
Q

Class 455 EMU

Where would you find the parking break apply cock?

A

Class 455 EMU

You will find the Parking Break Apply Cock in the driving cab, Non drivers side in the foot well.

36
Q

Class 455 EMU

Where would you find the Wiper Isolation Cock & the Horn Isolation Cock?

A

Class 455 EMU

You will find the Wiper Isolation Cock & the Horn Isolation Cock in the foot well drivers side.

37
Q

External Equipment Class 455

How many collector shoes does a single 455 unit have?

A

External Equipment Class 455

A single unit 455 have a total of X4 collector shoes. There are X2 collector shoes on each Driving Trailer.

Trains (14 decks)

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