Traction - Siemens

Question 1

What equipment is mounted on the roof of a Siemens motor car?

Answer 1

Pantographs (2 end)
Antenna (1 end)
Surge arrestor (2 end)
2 HVACs

Question 2

What equipment is mounted to the roof of a Siemens trailer car?

Answer 2

2 HVACs

Question 3

What are the different motor car types for a Siemens consist?
How are they identified?

Answer 3

DMA = PA circuit breaker
DMB = CCTV circuit breaker

Question 4

What equipment is in the traction container?
What functions do they perform?

Answer 4

Traction inverter:
- converts 1500vDC to variable 3 phase AC for traction motors
Traction control unit:
- processes inputs from master controller and powers motors accordingly, controls holding brake

Question 5

What is in the high voltage container?

Answer 5

Right hand side:
- HSCB, grounds switch (M car)
- auxiliary equipment (T car)
Left hand side:
- brake control unit

Question 6

What does the static inverter do on a Siemens?

Answer 6

Converts 1500v DC to:
- 400v AC (3 phase)
- 230v AC (single phase)
- 110v DC (battery, safety loop)

Question 7

What is the purpose of the self excite button?

Answer 7

Manually starts the SIV in the event of low battery supply

Question 8

What are the positions of the master selector switch?

Answer 8

Reverse
Neutral (stopped at signal, cab unattended/deactivation)
Forward
Set speed (6km/h)

Question 9

How is the cab made active in a Siemens?

Answer 9

• Key in master key switch
• turn key to “on” position

Question 10

What are the operating zones on a Siemens master controller?

Answer 10

Emergency brake (B7)
Brake (B1-B6)
0 (coast)
Drive (D1-D7)

Question 11

What are the brake cylinder pressures for each level of braking?

Answer 11

Holding brake = 110 kPa
B1 = 57 kPa
B2 = 83 kPa
B3 = 109 kPa
B4 = 136 kPa
B5 = 162 kPa
B6 = 189 kPa
Emergency/B7 = 280 kPa

Question 12

Where is the trailer car fault and MCB panel located?

Answer 12

To the right of door 2

Question 13

What are the positions of the brake pipe mode key switch?

Answer 13

0 - normal train operation
1 - pushed by other train
2 - pulling other train
3 - pulled by other train
4 - pushing other train

Question 14

At what main res pressure will the emergency brake apply?

Answer 14

<600 kPa

Question 15

At what main red pressure will the park brakes apply?

Answer 15

<350 kPa

Question 16

What is the main res operating pressure for a Siemens?

Answer 16

850 - 1000 kPa

Question 17

What happens when the main res pressure falls below the operating range on a Siemens?

Answer 17

Below 850 kPa, uncouple button will flash

Question 18

What are the safety valve release pressures on a Siemens?

Answer 18

Air dryer/main res = 1050 kPa
Air dryer/compressor = 1100 kPa

Question 19

What are the 3 bypass switches in the MCB panel?

Answer 19

Door loop bypass
Safety loop bypass
Trip bypass

Question 20

What happens when one SIV fails?

Answer 20

All equipment stays running, but only running at 50% max capacity

Question 21

Where is the manual Panto crank handle located?

Answer 21

Second panel to the right of door 2, in a motor car

Question 22

What are the 5 circuit breakers that cause the emergency brake to apply?

Answer 22

Friction brake & monitoring
Automatic coupler control
Cab/Train manned
Emergency brake valve
Safety loop (lead)

Question 23

Which fault lights indicate a train line fault?

Answer 23

Safety loop
Critical defect
Maintenance fault
Reduced performance
Door system
Compressor fault