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Siemens Traction > Cab Equipment and Circuit Breakers > Flashcards

Cab Equipment and Circuit Breakers Flashcards

1
Q

Positions of a master selector switch

A
  • reverse
  • neutral
  • forward
  • Set speed
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2
Q

Neutral is used for? (3)

A
  • stopped at a signal
  • cab unattended
  • any time a cab is to be deactivated
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3
Q

When will the over speed system apply emergency brakes?

A

Speed over 125km

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4
Q

What does set speed do? And when does the overspeed activate?

A

Limits the train to 6km and over speed activates at 8km

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5
Q

What are the 7 circuit breakers and can they be bypassed? CATSFED or FACES TD

A
  1. Cab manned - cannot bypass
  2. Train stable - cannot bypass
  3. Safety loop - cannot bypass
  4. Emy brake valves - cannot bypass
  5. Door control train line (doors open) - cannot bypass
  6. Friction brake monitoring - yes bypass
  7. Auto coupler in centre cab - yes bypass
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6
Q

What type of brake does emergency use?

A

Friction brake only

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7
Q

When does the holding brake automatically apply?

A

Speed below 0.2km or in coast

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8
Q

Holding brake cylinder pressure?

A

110kpa

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9
Q

Full service/B6 pressure?

A

189

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10
Q

Emy brake cylinder pressure?

A

280kpa

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11
Q

What happens when a DDA request button is pushed? (2)

A
  • button flashes 5 times
  • cctv will turn on when you press it
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12
Q

What speed does the over speed indicator lamp illuminate?

A

Over 119km

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13
Q

The auto door close inhibit overrides which doors?
Key in or out when you press it?

A

1 and 4
Key in

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14
Q

When does the uncouple button flash? And is it in all cabs?

A

Low main res pressure (below 850) in all cabs

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15
Q

Key switch on or off to stable the train?

A

Off

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16
Q

How often does the MAD button sound

A

30 sec

17
Q

When would a critical fault light illuminate? (3)

A
  • major failure of friction brakes
  • both SIV failed
  • wheel slip fault affecting the sanders
18
Q

What does the traction system fault light tell you (2)

A
  • The traction system on the local motor has a serious defect
  • the train stable, HSCB or light control MCB has tripped
19
Q

When you bypass the safety loop and trip cock, what button do you need to continue to press?

A

MAD button

20
Q

Where are the MCBs and fault panel in a trailer car?

A

RH side door 2 at no 2 end

21
Q

Does the cab speaker turn on automatically when a PEI is activated?

A

Yes

22
Q

What does the compressor fault light tell you?

A

Air pressure has dropped below pressure switch setting and has not recovered to normal MR settings

23
Q

Is Panto control MCB local or train lined?

A

Train lined

24
Q

Is Panto motor MCB local or train lined?

A

Local

25
Q

What circuit breakers are behind the fire extinguisher?

A
  • GPO
  • Trip
26
Q

What does the trip cock device do?

A

Prevents the trip from lowering when cab is deactivated

27
Q

The safety systems isolation fault light will illuminate when what has been operated? (3)

A
  • door loop bypass
  • safety loop bypass
  • trip cock bypass
28
Q

Safety equipment (6)

A

FAK
ATWS
ETCJC
Red and green flags
Fire extinguisher
Switch stick

29
Q

When does the holding brake release?

A
  • When enough traction power has been detected to accelerate the train
  • in B1 - B6
30
Q

The vigilance control system comprises of…? (5)

A
  • task linking
  • acknowledgement button
  • audible buzzer
  • fault indicator
  • activation valve or relay
31
Q

What does the general fault indicator flashing red mean?

A

There is a fault on the train

32
Q

In centre cabs, what does it mean when the uncouple button is illuminated red?

A

The trains are coupled

33
Q

When does the trip lower?

A

When the cab is activated

34
Q

What does the electric brake inhibit button do?

A

Temporarily disables ED braking and enables EP

35
Q

Which circuit breakers could cause a critical defect fault light to illuminate?

A
  • friction brake monitoring in M and T
  • SIV monitoring MCB in T car
36
Q

What happens when the traction control unit MCB trips? And what fault lights?

A
  • traction power for the local unit is not available
  • reduced performance and maintenance fault in any cab
  • Traction system fault in affected motor
37
Q

Fault lights on T car fault panel? (10)

A
  • Breaks bogie 1 & 2
  • HVAC 1 & 2
  • SIV 1&2
  • brakes cut out bogie 1&2
  • park brake bogie 1&2
38
Q

Train lined fault lights? (6)

A
  • safety loop
  • critical defect
  • maintence fault
  • reduced performance
  • door system
  • compressor fault

Siemens Traction (9 decks)

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