Traction - X’Trap Flashcards
What are the 5 isolating cocks beside the drivers cab?
Horizontal:
- whistle
- uncoupling
- trip cock reset
Vertical:
- trip active
- auxiliary pneumatic panel
Where are the brake indicator lights? What do the colours represent?
On the corner of every car, indicate if brakes are applied on the local bogie:
🟢 - friction brake released
🔴 - friction brake applied
Where are the park brakes on an X’trap?
Wheels 1, 3, and 7 (motor car only)
What is in the traction container?
Main switch
Traction Control Unit (TCU)
Traction inverter
Line Inductor
Traction Cooling fan
What isolating cocks are on the brake rack?
Bogie 1& 2 isolating cocks
Auxiliary isolating cock
Where are the pantographs located?
Number 2 end of the trailer car
What items are in the A side equipment cabinet?
Track circuit jumper cables
Flags
First aid kit
VICERS whistle isolating cocks
How do you access the X’Trap wheelchair ramp?
Cabinet next to doors 1 & 6
Opened via tri key (square)
What are the positions of the master controller?
Emergency
Brake
Coast
Power
What are the reverser positions in an X’Trap?
Reverse (pull towards)
Neutral (centre)
Forward (push away)
What are the 3 sealed switches on the driving aid control panel?
Safety loop bypass switch
Auto vigilance bypass switch
Tacho bypass switch
What does the tachometer control?
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
What are the BP pressures for the X’Trap?
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
What are the BC pressures for the X’Trap?
120 kPa - holding brake
190 kPa - full service EP
210 kPa - emergency
What are the main res pressures of the X’Trap?
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