HCMT Train Electric

Question 1

Where are the Pantos located?

Answer 1

No 1 end all motor cars

Question 2

What is used to raise the Pantos

Answer 2

Electrical and pneumatic process

Question 3

What pressure is needed to raise the pantoss

Answer 3

700 kpa

Question 4

If MR pressure is not sufficient and panto raise button is pressed what happens

Answer 4

110v DC powers the auxiliary compressor to raise the local panto.
Once MR reaches 400-450 pantos on the Mp will raise

Question 5

Where is the high voltage box located and name the 2 things inside

Answer 5

No 1 end all motor cars
HSCB
Harmonic wave detection device

Question 6

What button is used the reset the HSCB is prompted

Answer 6

TCU/ACU rest button

Question 7

What does the harmonic wave detection device do and can it be reset

Answer 7

Safeguards against power quality problems
Yes, TCU/ACU reset button

Question 8

The electrical auxiliaries system converts 1500 vDC to what

Answer 8

3 phase 415 vAC

Question 9

What 4 equipment runs on 415 vAC

Answer 9

Battery chargers
Air compressor
Traction Cooling system
HVAC - cab and saloon

Question 10

The battery charger converts 415 vAC to what

Answer 10

110 vDC

Question 11

What is in the variable voltage variable frequency cabinet and what does it convert 1500 vDC to?

Answer 11

Traction inverter
3 phase variable voltage and variable frequency

Question 12

Where is the auxiliary power supply located and what 4 things is inside

Answer 12

Tc and DT cars
Auxiliary inverter
Medium voltage box
Battery box
Battery charger

Question 13

The battery box supply what voltage and for how long

Answer 13

110 v DC
2h in emergency

Question 14

The battery charger converts 3 phase 415 vDC to what

Answer 14

110 vDC

Question 15

What runs on 240v AC

Answer 15

GPOs cab and saloon

Question 16

In emergency conditions what 3 things will have a reduced function

Answer 16

Saloon lights will reduce to 50%
HVAC: fresh air fan operates with 110v DC battery power for 2 h
Saloon doors operate as normal

Question 17

What happens with the HVAC when in train wash mode

Answer 17

Closes the fresh air damper and close fresh air fan

Question 18

When power is lost what 3 things will the saloon HVACs do automatically

Answer 18

Open the fresh air dampers fully
Close the return air dampers
Fresh air fan operates on 110v DC for 2h

Question 19

What happens when internal smoke detection happens

Answer 19

Internal smoke detectors relay signal to 2 HVAC
TMS display level 2 alert to driver and 15 sec timer starts
15 sec eTIS escalate to level 1 and initiate smoke mode
Upon internal smoke signal the HVAC shuts down and opens fresh air dampers
Internal fire doors close

Question 20

What happens in the event of external smoke detection

Answer 20

2 external smoke detectors detected smoke, signal is sent to every HVAC to close fresh air dampers after 15 sec
Driver is alerted via eTIS
HVAC will automatically open fresh air damper once no smoke is detected
If the fresh air damper is closed for 10mins it will automatically open to allow fresh air

Question 21

Name the 4 circuit breakers that will cause the train to fail

Answer 21

Cab activation
Traction control
Emergency brake loop power supply
Brake control supply

Question 22

The emergency brakes will apply when:
(9 answers)

Answer 22

MC to Emy
Hand and foot pilot not set
EMS button
Trip activated
Vigilance penalty application
MR below 600 kpa
Towing unit demand for Emy brake
Safety system bypass reminder timeout
Physical interruption of the safety loop

Question 23

The safety loop cannot be reset until

Answer 23

Stationary for 3 sec
Reason for Emy brake is reset
MC to max brake and reverse to neutral