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Metro157 > Siemens Faults - Electrics > Flashcards

Siemens Faults - Electrics Flashcards

1
Q

What happens to the train when it is stabled?

A

All marker and saloon lights are extinguished
PA is inoperative
Saloon doors lock

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2
Q

What three kinds of faults can be rectified via train stable?

A

Totally disabled
Critical faults
Serious or maintenance faults

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3
Q

What three locations are train stable procedures deemed appropriate?

A

Platforms
Under protection of home signals
Where level crossing protection devices won’t remain active

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4
Q

Before stabling a train for fault rectification, what must a driver do?

A 
PA advising of the lights going out and doors locked for a short period of time 
Close doors
Remove key
Stable
Confirm pantos have lowered 
Wait 2 minutes
Reactivate
Raise pantos
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5
Q

What must be done when a general fault light starts flashing and why?

A

Fault acknowledge to ensure the flashing stops and a driver can see if another fault arises

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6
Q

What 3 faults can a critical fault light indicate?

A

2 SIVS failed
Defective sanding equipment
Fault in pneumatic friction brake

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7
Q

If a train can be moved with a critical fault, what is the procedure?

A

Operate at low speed
De train at station
Shunt to nearest siding

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8
Q

If a critical fault occurs and driver cannot move the train, what circuit breakers need to be inspected?

A

Friction braking and monitoring in affected cars

Static inverter monitoring in trailer car

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9
Q

Can a train be safely operated with a maintenance fault?

A

Yes

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10
Q

What does the reduced performance fault light mean?

A

One or more motor cars are failing to power

Wheel slip is occurring

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11
Q

What other fault light will appear with a reduced performance fault light to indicate that car has failed traction equipment?

A

Traction system fault light

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12
Q

Can a driver reset a traction lock once the TCU attempts to reset the system?

A

No the reset is done by itself but a driver can move the handle to coast to clear the fault

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13
Q

What percentage of tractive effort is needed to remain in service?

A

50%

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14
Q

How does a driver reset slip and slide device?

A

Coast for 2 seconds

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15
Q

If the driver suspects another key is being inserted to another cab, what is their duties?

A

Check for cleaners key
Try a cab to cab call
Inspect each cab for cleaners keys or another key

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16
Q

If the active cab is located but no key or cleaners key is found, what could be the remedy?

A

Cab/train manned CB

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17
Q

What circuit breakers are reset to rectify a cctv fault?

A

Cctv central control

DC-DC inverter pa, Pi display

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18
Q

How do you reset a DTRS?

A 
Deactivate cab
Trip and reset DTRS cb
Activate
Re enter is tdn in unit of DTRS
Conduct radio test
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19
Q

True or false, if no PA system is operational, the train must be taken out of service?

A

True

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20
Q

How long must a train be stabled for fault rectification for a PA system?

A

2 minutes

21
Q

If pantos fail to raise, what cb need to be checked and in what cars?

A

Check pantograph control cb in local driving cab

Check pantograph motor in affected driving cab

22
Q

If pantos fail to raise and cb is set, what must a driver do?

A

Trip and Reset panto control cb and press pantos up
If this fails either raise from another cab or trip panto motor and manually raise the lead
Press pantos up and ensure they drop with the pantos down command before entering service

23
Q

If all pantos fail to raise due to low battery or faulty circuit, what must be done?

A 
Check if they raise from elsewhere
If not stable the train from lead  for one minute 
Trip panto motor cb
Raise the lead panto manually
Press panto up button
Reset panto motor cb
24
Q

What CB needs to be checked when pantos fail to lower when train stabled is pressed?

A

Train stable, HSCB and light control
Shutdown delay in T car
TCU

25
Q

How do you isolate individual pantos?

A 
Key off
Train stabled
Trip panto motor and panto control cb in affected motor 
Lower defective panto vis crank handle if required
Set panto control cb
Key to on
Press panto up 
Ensure it stays down
26
Q

If both SIVS fail, what equipment is affected?

A 
Air con
Only emergency lighting
Battery charger won’t charge batteries
Half drivers cab fluro lighting
Air compressor fails
27
Q

At what battery voltage will the SIVS fail to start?

A

82v

28
Q

How do we start the SIVS manually?

A 
Key off
Train stabled
Trip panto motor cb
Raise panto manually
Go to SIVS on A side of train
Unlock and press excite button
Return to cab and activate cab
Push pantograph raise
Reset panto motor cb
29
Q

If a door remains open, what is the procedure?

A 
Open panel to left of door and press the button labelled button
If that fails trip cb
Close doors manually
Manually isolate via triangle keyswitch
Reset cb
30
Q

If a trip has failed, what may need to be isolated?

A

Trip cock bypass

31
Q

When running on secondary safety circuit, what button is pressed at regular intervals?

A

MAD button

32
Q

If a fire happens in the train, what must be turned off?

A

HVAC

33
Q

Name the circuit breakers that de energise the safety loop?

A 
Safety Loop
Auto coupler
Friction brake and monitoring
Emergency brake valves 
Cab manned
Door controller train lined
34
Q

How often will the MAD button make an audible tone on the secondary safety circuit?

A

45 seconds

Brakes apply 10 seconds later

35
Q

What are the steps when stationary to rectify safety loop faults?

A 
Master Controller Key switch 
Main res below 600 (if above 600 go to step 6)
Emergency stop indicator illuminated
VICERS fault light or activation
Over speed indicator illuminated 
Trip Bypass
Safety Loop Bypass
Fault cannot be resolved (stable, reset, disabled if it doesn’t work)
36
Q

What are the steps for a faulty safety loop in running?

A 
Master Controller Key switch 
Main res below 600 (if above 600 go to step 6)
Dead mans devices 
Trip activation 
VICERS fault light or activation
Over speed indicator illuminated 
Trip Bypass
Safety Loop Bypass
Fault cannot be resolved (stable, reset, disabled if it doesn’t work)
37
Q

How long does the PID circuit breaker need to be reset for?

A

30 seconds

38
Q

If the overspeed light is illuminated, how would a driver remedy this?

A

Master controller in coast for 3 seconds

39
Q

What is the drivers responsibility if a DER is pulled?

A 
Check the CCTV via PEI call
Log a TEC call advising of delay
Perform FCU
Locate affected door
Return DER to closed
Door may need to be manually closed
Submit TMM
40
Q

If low power is detected in the overhead, what circuit breaker will be needed to be tripped?

A

TCU

41
Q

Name the 6 fault lights?

A

Safety loop, critical defect, maintenance, door, compressor, reduced performance

42
Q

What does the compressor fault light indicate to a driver?

A

Main res is below 850kpa

43
Q

If a door isolated itself, what indication will a driver get?

A

Door systems fault light

44
Q

Name the 3 pantograph faults?

A

All Pantos fail to raise
One panto fails to raise
Pantos fail to lower with pantos down command
Pantos fail to lower with train stable command
Worn carbon strip

45
Q

Does a compressor fault monitor the mechanical operation of a compressor?

A

No

46
Q

What 3 methods rectify faults on a Siemens?

A

Isolating cocks
Circuit breakers
Train stable

47
Q

What two cb is checked for failed headlights?

A

Front lights

External lights

48
Q

If brake handle in emergency fails, what are the 4 steps to stop the train?

A

Emergency application
Emergency stop button
Park brake
Key out

Metro157 (81 decks)

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