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Traineeship Study > Faults - Electrical > Flashcards

Faults - Electrical Flashcards

1
Q

If the train loses Overhead power how do you conserve Battery Energy?

A
  • Reverser to Neutral
  • Master Controller Key to OFF
  • Headlights OFF
  • Cab lighting OFF
  • Emergency Saloon lighting (if it’s daylight)
  • Close all Cab doors (Step lights OFF)
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2
Q

What Fault lights can you get if a Circuit Breaker trips?

A
  • Major Fault
  • Major 2nd Level Fault
  • Minor Fault

(Minor Fault light for CB in Electrical Box)

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3
Q

Where are Circuit Breakers in a X’Trap?

A
  • MCB Panel in Drivers Cab
  • Trailer Saloon in the Pelmet left of Door 2
  • Electrical Box (E Box)
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4
Q

Can driver open the Electrical Box?

A

No

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5
Q

What Circuit Breakers are in the Miniature Circuit Breaker Panel?

A
  • 23Q1
  • 23Q2
  • 22Q6
  • Pantographs Command
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6
Q

What Circuit Breakers are in the Trailer Car to the left of Door 2?

A
  • Pantograph 1
  • Pantograph 2
  • Aux Inverter 1
  • Aux Inverter 2
  • BCU (Brake Control Unit)
  • Tachy Unit (Tacho)
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7
Q

How many E Box’s are on a 6 car train?

A

6

(1 per carriage)

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8
Q

What Fault Light illuminates when a Circuit Breaker trips in the E Box?

A

Minor Fault Light

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9
Q

What are the 3 Circuit Breakers for the Pantograph?

A
  • Pantographs Command (in MCB Panel in Motor Cab)
  • Pantograph 1 and Pantograph 2 (Left of Door 2 in the Pelmet in Trailer Cars)
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10
Q

How many times can the same Fault be Rectified in Running before it must be removed from service?

A

3 times

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11
Q

When Stabling a train which has an Electrical Fault what must the driver do?

A
  • Contact Fleet and confirm if they want the Pantographs lowered or raised
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12
Q

What Faults may be rectified by a Train Stable? (13)

A
  • Battery Charger faults
  • CCTV faults
  • Compressor faults
  • DDU faults
  • Failed Traction faults
  • Fixed DTRS faults
  • HVAC faults
  • PA faults
  • Safety Loop faults
  • Service Brake faults
  • SIV faults
  • Speed Sensor/Tacho faults
  • Traction faults
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13
Q

If possible, where should Stables on the Mainline be performed?

A
  • At a Station Platform

(Under the protection of Home Signals or where Level Crossing devices won’t remain activated)

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14
Q

How do you Stable on the Mainline?

A
  • TEC call to get permission
  • PA Announcement (Saloon Doors will be locked and Saloon Lighting will be in Emergency for 2 minutes)
  • Close Saloon doors
  • Press Stable button
  • Ensure HIGH VOLTAGE PRESENCE STATUS LIGHT has extinguished
  • When 1 OR MORE PANTO DOWN STATUS LIGHT illuminates, wait 5 seconds
  • Remove Key
  • Confirm Pantos have lowered
  • Wait 2 minutes and then reactivate Lead Cab
  • Test Fault has cleared
  • Book as per FMP
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15
Q

How long do Marker Lights and Emergency Saloon Lighting remain illuminated after Stabling?

A

15 minutes

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16
Q

If a Step Light isn’t illuminated, what are the possible causes?

A
  • Step Light is defective
  • Batteries are flat
  • Batteries have been isolated
  • Battery Box fuse is blown and/or missing
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17
Q

Can drivers touch anything in a Battery Box?

A

No, just observe if given permission by Train Control

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18
Q

Can blown Battery Fuses be fixed by drivers?

A

No

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19
Q

If Pantographs fail to raise, what should a driver do?

A
  • Check Voltmeter (must be above 90v)
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20
Q

If Pantographs fail to raise, what should a driver do if there is no Voltage?

A
  1. Check position of Battery Box Isolation Switch
  2. If isolated, book TMM to TC
  3. If not isolated, declare Train Disabled
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21
Q

If Pantographs fail to raise, what should a driver do if Voltage is below 90v?

A

Declare Train Disabled

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22
Q

If Pantographs fail to raise, what should a driver do if Voltage is above 90v?

A
  • Check Panto Command CB
  • Check Panto Control Buttons aren’t Latched In
  • Attempt to raise Pantos from another Cab

If they fail to raise after that

  • Inspect 3-Way Swtich in Trailer Car (Right of Door 4)
  • Inspect Panto 1 and Panto 2 Circuit Breakers in Trailer Car (Left of Door 2)
  • Book TMM to Train Control
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23
Q

Are Drivers allowed to manually raise the Pantographs?

A

No

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24
Q

How do you Isolate a Pantograph?

A
  1. Stable Train
  2. Observe defective Pantograph has lowered

(Pantograph must be manually lowered if this doesn’t work)

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25
Q

How do you manually lower a Pantograph?

A
  1. Proceed to Trailer Car and place 3-Way Switch to MANUAL LOWERING AND ISOLATION POSITION
  2. Attach CRANK HANDLE
  3. Wind in ANTI-CLOCKWISE direction
  4. Return CRANK HANDLE to its holder
  5. Confirm Pantograph is lowered
  6. Book TMM with Train Control
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26
Q

What happens if a trains fails to clear an Overhead Obstruction/Tramway while Coasting under?

A

Train must be Rescued

27
Q

What should a Driver do if OTHER CAB OPERATIVE Status light is illuminated?

A
  1. Attempt Cab to Cab to locate potential Driver
  2. Inspect each Can for Master Controller Key/Cleaner Key
  3. If no key is found, activate each cab to find which Cab is active and then deactivate it
  4. If the Cab can’t be deactivated, perform a TRAIN STABLE
  5. If TRAIN STABLE doesn’t fix fault, DECLARE TRAIN DISABLED
28
Q

What should a Driver do if OTHER CAB OPERATIVE Status light is illuminated, and a COMPETENT EMPLOYEE is available?

A
  1. Driver must remain in active Cab to power the train
  2. Competent Employee must travel in Lead Motor (Operate ESB if needed)
  3. Book as per FMP
  4. Drive Train in accordance which rescued train procedures (Maximum 15km/h)
29
Q

If the EMERGENCY BRAKE IS APPLIED AND NOT RELEASING, what should the driver do?

A
  1. Check 110vDC (try Cab Fluro light)
  2. Trip lowered and reset
  3. Master Controller not in Emergency position
  4. Hand/Foot Pilot Valve set
  5. Has VICERS been activated
  6. EMS Switch is in 2
  7. Main Reservoir pressure above 580kpa
  8. Another Cab Operative Light (Lamp test)
  9. 23Q1 and 23Q2 aren’t tripped

(Other Cabs check ESB and Trips are raised)

30
Q

If the EMERGENCY BRAKE IS APPLIED AND NOT RELEASING, and the Driver can’t resolve after Fault Finding?

A

Use Safety Loop Bypass

(Except if the train has lost 110vDC or Main Reservoir Pressure is below 580kpa)

31
Q

What safety equipment isn’t available if the Safety Loop Bypass switch is in operation?

A
  • Emergency position of the Master Controller
  • Emergency Stop Button
  • Hand/Foot Pilot Valves
  • Auto- Vigilance Bypass button
  • Trip
  • Brake Pipe Pressure Switch
  • Main Reservoir Pressure Switch
32
Q

If the Auto-Vigilance Bypass is in operation, what happens?

A
  • Auto-Vigilance Bypass button will flash every 30 seconds ( Driver must press this button within 10 seconds)
  • Driver must isolate VICERS
33
Q

What are the 4 times where the VICERS must be isolated?

A
  • Fault Indicator illuminates and remains illuminated
  • Safety Loop is Bypassed
  • Auto-Vigilance is Bypassed
  • Abnormal operation of VICERS
34
Q

If overhead power is lost, what will the VICERS run off?

A

Train Battery

35
Q

Can batteries be charged by a different 3 car unit?

A

No

36
Q

If the Battery Charger is defective, how long will the batteries last?

A

60 minutes

37
Q

If 1 SIV fails, what do you lose?

A
  • 1 Air Compressor
  • 1 HVAC (on each car of that 3 car unit)
38
Q

If 1 SIV fails, what do you keep?

A
  • Battery Charger
  • 1 Air Compressor
  • Traction Cooling Fan
  • 1 HVAC
  • Full Saloon Lighting
39
Q

What do you lose if both SIV’s fail?

A
  • Battery Charger
  • Both Air Compressors
  • Both Traction Cooling Fans
  • All HVACs

(On that 3 car unit)

40
Q

If you stop mid section with a FDCL, how can you get Traction power again?

A
  • FDCL is rectified
  • Door Loop Bypass is isolated
41
Q

What illuminates when Door Loop Bypass is isolated?

A
  • Safety System Isolation Switch

(In MCB Panel and on Dash)

42
Q

What are the indication when a DER is pulled?

A
  • Flashing Blue Door Closed Light
  • Door Emergency Handle Activated Status Light
  • Flashing Red ANSW Acknowledge Button
  • DDU emits beep sound (Audible Tone)
43
Q

How do you manually reset a DER?

A

Turn Tri-Key in anti-clockwise direction

44
Q

If a DER is activated because of a Door Fault, the driver must?

A
  • Close door
  • Isolated door
  • Book TMM and FWN
45
Q

How do you isolate a Saloon Door?

A
  1. Locate the door if advised by Train Control
  2. Open Pelmet to the left of the door
  3. Move the Motor Isolation Switch to Motor Release (Position 1 fully raised)
  4. Manually close door
  5. Move the Motor Isolation Switch to Motor Lock Close (Position 4 fully lowered)
  6. Apply Door Not in Use Sticker
  7. Report as per FMP (TMM and Fault Warning Notice)
46
Q

If the Traction Control Unit can’t resolve a Traction Fault, what does it automatically do?

A
  • Automatically Isolate equipment causing the fault
47
Q

When the TCU automatically isolates equipment, what indication does the driver get? (4)

A
  • Traction Fault Light (On affected Motor)
  • 1 or more Traction Equipment Fault Light (Train Line Fault light (every Cab))
  • No Green LEDs on the power indicator when trying for power
  • Possible shuddering while the Train is in motion
48
Q

What type of Fault Light is the 1 or more Traction Equipment Fault Light?

A
  • Train Lined Fault Light
49
Q

What type of Fault Light is the Traction Fault Light?

A

Local Fault Light

50
Q

How can you rectify a Traction Fault light?

A
  • Stable the Train

If this fails or there isn’t time to Stable the driver must:

  • Activate each Cab one by one
  • Locate the Motor that has the Traction Fault light and 1 or more Traction Equipment Fault light
  • Place the TRACTION ISOLATE SWITCH to ISOLATE
  • Book as per FMP
51
Q

What happens once the TRACTION ISOLATE SWITCH is turned to ISOLATE?

A
  • Traction Fault light remains on in the affected Motor Cab
  • 1 or more Traction Equipment Fault light extinguishes in all Motor Cabs
52
Q

What happens when the train gets another Traction Fault after isolating the first fault?

A

Train will receive Fault lights again and the process must be repeated

53
Q

How many Tacho Cables need to be working on a 6 Car Unit?

A

1

54
Q

How many Tacho Cables are there on a 6 Car Unit?

A

4

55
Q

What equipment is affected when the Tachometer fails?

A
  • Doors Release
  • Uncoupling
  • Safety Loop Reset (Rescue)
  • Trip Reset
  • Speedometer
  • VICERS Reset
56
Q

How do you rectify a Tachometer Speed Input Fault?

A
  • Train Stable (if time permits)

Or

  • Tacho Bypass Switch
57
Q

What equipment can fail if you get a 110vDC/24vDC Inverter Fault? (10)

A
  • Headlights (Low Beam)
  • Driver seat adjustments
  • Marker lights
  • Speedometer
  • Windscreen wiper/washer
  • Voltmeter
  • Memory Aid device
  • Cab spotlight
  • CCTV cameras
  • External Brake Indicator lights
58
Q

If the PA is inoperative, the Driver must?

A
  1. Check PA on the DTRS

If DTRS isn’t operative:

  1. Book as FMP
  2. Stable Train for 2 minutes (get permission for Train Control if in running)
  3. Restart and wait an additional 4 minutes and re-test the PA
59
Q

What do Major Fault, Major 2nd Level Fault and Minor Fault lights indicate?

A

A Circuit Breaker has tripped

60
Q

Can Drivers reset Circuit Breakers in the E Box?

A

No

61
Q

What Fault Lights always appear when the train has locked/jammed axles?

A
  • Service Brake Fault
  • Wheel Slide
62
Q

What positions does the Manual Pantograph 3-way Switch have?

A
  • Auto
  • Manual Raising
  • Manual Lowering and Isolation
63
Q

What positions does the Manual Door Release have?

A

1 - Release
2 - Isolate
3 - Normal
4 - Lock Close

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