Traction - X’Trap Flashcards

1
Q

What are the 5 isolating cocks beside the drivers cab?

A

Horizontal:
- whistle
- uncoupling
- trip cock reset
Vertical:
- trip active
- auxiliary pneumatic panel

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2
Q

Where are the brake indicator lights? What do the colours represent?

A

On the corner of every car, indicate if brakes are applied on the local bogie:
🟢 - friction brake released
🔴 - friction brake applied

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3
Q

Where are the park brakes on an X’trap?

A

Wheels 1, 3, and 7 (motor car only)

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4
Q

What is in the traction container?

A

Main switch
Traction Control Unit (TCU)
Traction inverter
Line Inductor
Traction Cooling fan

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5
Q

What isolating cocks are on the brake rack?

A

Bogie 1& 2 isolating cocks
Auxiliary isolating cock

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6
Q

Where are the pantographs located?

A

Number 2 end of the trailer car

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7
Q

What items are in the A side equipment cabinet?

A

Track circuit jumper cables
Flags
First aid kit
VICERS whistle isolating cocks

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8
Q

How do you access the X’Trap wheelchair ramp?

A

Cabinet next to doors 1 & 6
Opened via tri key (square)

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9
Q

What are the positions of the master controller?

A

Emergency
Brake
Coast
Power

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10
Q

What are the reverser positions in an X’Trap?

A

Reverse (pull towards)
Neutral (centre)
Forward (push away)

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11
Q

What are the 3 sealed switches on the driving aid control panel?

A

Safety loop bypass switch
Auto vigilance bypass switch
Tacho bypass switch

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12
Q

What does the tachometer control?

A

Controls the function of:
- door release
- uncouple button
- trip reset
- safety loop reset (no pressure during rescue scenarios)

All are operable when the train speed is below 0.5 km/h

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13
Q

What are the BP pressures for the X’Trap?

A

0 kPa - normal operating pressure
During rescue:
300 kPa - safety loop opens
430 kPa - safety loop closes
480 kPa - traction available
550 kPa - fully charged

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14
Q

What are the BC pressures for the X’Trap?

A

120 kPa - holding brake
190 kPa - full service EP
210 kPa - emergency

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15
Q

What are the main res pressures of the X’Trap?

A

580 kPa - safety loop opens
650 kPa - 2nd compressor on (lowering), safety loop closes (rising); main res fault light (low pressure)
750-900 kPa - regular operating pressure
980 kPa - safety valve activates

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16
Q

What equipment is part of the high voltage system?

A

Pantos
Lightning arrestor
2 HSCBs
Line inductors
Traction inverter
Brake resistor grids
SIVs (converts 1500v DC to 400v AC)

17
Q

What equipment is powered by the SIV 400v AC?

A

Battery charger
Air compressors
Traction cooling fans
HVACS

18
Q

What is the permanent low voltage line comprised of? What powers it?

A

Panto electric motor
Can step lights
Cab fluorescent light

Powered by the batteries

19
Q

What equipment is lost when a SIV fails?

A

1/2 AC (1 AC per car)
1 compressor

20
Q

What roof mounted equipment are on the motor car of an X’Trap?

A

Resistor grids
HVACs

21
Q

What roof mounted equipment is on the trailer car of an X’Trap?

A

Pantographs
HVACs
Lightning arrestor
2 HSCBs