Traction - HCMT

Question 1

What are the cars in a HCMT set called?

Answer 1

Tc - Trailer cab
DMp - door motor pantograph
Mp1 - motor pantograph
DT - door trailer
Mp2 - motor pantograph
DMp - door motor pantograph
Tc - trailer cab

Question 2

Which cars have pantographs?

Answer 2

DMp and Mp cars have pantographs (no 1 end)

Question 3

What are the screens in the drivers cab?

Answer 3

Back up screen
Surveillance Display Unit (SDU)
Driver Machine interface (DMI)
Human Machine interface (HMI)

Question 4

What does the SDU do?

Answer 4

Displays all CCTV camera feeds, including the stopping aid cameras and body side cameras

Question 5

What does the HMI do?

Answer 5

Allows access to the TMS (Train Management System)

Question 6

What does the DMI do?

Answer 6

Displays a digital speedometer
Displays high capacity signalling information (CBTC)

Question 7

What are the levels of alerts displayed on the HMI?
How are they distinguished?

Answer 7

Level 1:
Audible tone (low high)
Flashing red message bar
Level 2:
Audible tone (high low)
Flashing yellow message bar
Level 3:
Steady yellow message bar

Question 8

What are the isolating cocks within the brake control module?

Answer 8

Left to right (diagram):
1. Brake supply
2. Brake cylinder bogie 2
3. Brake cylinder bogie 1
4. Park brake (Mp, DMp, DT)/tread scrubber (Tc)
5. Sanding equipment

Question 9

What are the isolating cocks underneath the coupler cover on a Tc Car?

Answer 9

Left to right:
1. Uncouple
2. Towing unit
3. Brake pipe
4. Main reservoir
5. Horn

Question 10

What is the APS? What a housed within it and what cars are they on?

Answer 10

Auxiliary Power Supply
Holds:
Auxiliary inverter
Medium voltage (MV) box
Battery charger

Found on Tc and DT cars

Question 11

What is contained within the High Voltage box? Where is it located?

Answer 11

High Speed Circuit Breaker (HSCB)
Harmonic Wave Detection Device (HWDD)

Found at the a side No.1 end of motor cars

Question 12

What are the 3 loading types on a HCMT?

Answer 12

Permanent:
- loads that are always connected to the battery, regardless of active cab
Non-permanent:
- loads that only gain power when a cab is active
Emergency:
- loads that have power during emergency power situations (loss of overhead/battery system failure)

Question 13

Which circuit breakers will cause a HCMT to fail when tripped?

Answer 13

• Cab activation
• Traction control
• Emergency brake loop power supply (both cabs)
• Brake control supply

Question 14

How can the safety loop be reset?

Answer 14

Train stationary for 3+ seconds
Emergency brake application reset
Mc -max brake, reverser to neutral

Question 15

What is the ASU? Where are they located?

Answer 15

Air supply unit:
Main air compressor
Air dryers
Filters

On the underside of Tc cars, b side

Question 16

What are the operating pressures of a HCMT?

Answer 16

MR operating range = 850-1000 kPa
EMY brake = 280-460 kPa
Max brake = 250-380 kPa
Holding brake = 140-240 kPa
MR safety valve = 1050 kPa
MR Safety loop = 600 kPa

(+/- 20 kPa)

Question 17

What is contained within the B06 & B07 cabinets? Where are they located?

Answer 17

B06 - brake cylinder supply isolating cock, next to door 4
B07 - park brake isolating cock, next to door 3

Question 18

What items are linked to the vigilance control system?

Answer 18

Acknowledgement button
Master controller (min 5% change)
Horn
Headlight/wiper/washer switch
Safety system bypass acknowledge

Question 19

What are the braking systems on each car?

Answer 19

TC - EP, EMY, Holding
DT - EP, EMY, Holding, park
Mp, DMp - ED, EP, EMY, Holding, park

Question 20

What are the bypass key switches in the a side cabinet of a HCMT?

Answer 20

MR pressure
Traction interlock
Zero speed
Trip
Driver safety device
HCS isolate