Xtrap Revision Questions Flashcards
What are the operating functions of the saloon lights?
Normal
Half
Emergency
What settings are there for cab lighting?
Off
Cab (Fluorescent light)
Desk (Spotlight)
What do HVCAS control?
(5 answers)
Heating
Air con
Ventilation
Demisters
Cab foot well heater
On what cars are the traction containers?
Motor cars
On what cars are the auxiliary inverters?
Trailer cars
On what cars are the battery boxes?
Trailer cars
What is the roof mounted equipment on an M car?
HVACs
Resistor Grids
What is the roof mounted equipment of a T car? (4 answers)
Panto
2 HSCB
Lighting arrestor
HVACs
What safety equipment is in the drivers cab?
• First Aid Kit
• Audible Track Warning Signals
• Emergency Track Circuit Jumper Cable
• Red and Green flag
• Fire extinguisher
• Switch stick
What safety equipment is in A side cupboard?
(4 answers)
• Track circuit jumper cable
• Red and Green Flags
• First Aid Kit
• VICERS whistle isolating cocks x2 (for fitters)
Where is the ESB?
A side walk between door and OJT seat
When using PEI, Cab-Cab and PA what must the driver also press for communication?
PTT
What are the positions of the master controller?
• Power
• Coast
• Brake
• Emergency Brake
At what speed does the holding brake apply?
0.5km/h
How do you set the master controller and reverser to be able to remove the key?
Master controller- coast
Reverser - Neutral
What are the positions of the reverser?
Forward
Neutral
Reverse
After applying the trains emergency brakes, when can you move the master controller out of the emergency position?
Only once the train has come to a complete stand
How do you set the Hand pilot valve?
Press the hand pilot down
What are the 3 bypass switches on the driving aid panel?
• Tacho Bypass
• Auto Vigilance Bypass switch
• Safety loop bypass
What are the positions of the headlight switch?
Auto
Low
High
When do low beams come on automatically?
When the reverser is set to forward
What is the holding brake button used for?
Fault finding purposes, to apply traction power against holding break (without it coming off)
Press until traction power detected or for max of 2 seconds
Do you have key in or out to uncouple?
In
In normal operating what should BP pressure be?
0kpa
What 2 lights are illuminated in a non active cab?
High voltage presence
Other cab active
What are the positions of the emergency trainset mode switch?
1- On-Line Holding Brake Inhibit
2- Normal
3- Rescued
4- Rescuing
5- Rescuing in Propulsion
When in position 1 of emergency trainset mode switch what do drivers need to be aware of?
Holding brake is off, train could roll if in coast
What are the positions of the traction fault isolation switch?
Normal
Isolated
What are the positions of the trip cock device switch?
Raised
Lower
Reset
What would be the effect on the train if the trip wasn’t set?
Safety loop will be open, emergency brakes applied
What indicates that a trip has been activated or not set?
Red trip activated status light
What light does not illuminate when you do a lamps test?
MAD button and communication buttons
What is the minimum voltage on the voltmeter for the operation of the Xtrap?
90 v
What would the driver do if no low voltage was found?
Check battery isolation switch (do not touch)
If isolated report to TC
What is the High voltage equipment?
(7 answers)
• Pantograph
• Lightning Arrestor
• 2 High Speed Circuit Breakers
• Line Inductors
• Traction Inverter
• Rheostatic Brake Resistor Grids
• Auxiliary Inverter (SIV).
Where is the Panto located?
T car, 2 End
How do you raise pantos?
Put key in- Automatically
What unit is housed inside the traction converter?
TCU
How is a bunch up procedure completed on a xtrap
Pull 22Q6
EMS to 1
Power
Release hand pilot valve
Reverser to neutral
Reset 22Q6 and EMS to 2
Uncouple
What cab is the traction test completed in
Leading cab
What pressure is full service
190 kpa
When does the spring park brakes apply
Automatically, when main res air depletes
When is the Emy brake activated
Emy position of MC handle
Safety loop opening
What is emergency brake pressure
210 kpa
When does the holding brake apply and release
Applies when speed is below 0.5 km and releases as soon as you pull for power
What is the holding pressure
120 kpa
Can xtrap use brake blending and when
Yes,
when load, demand or speed requires it
What speed does ED brake apply
Above 10km
Brake blend down to 5km
Do all cars have tread and disc brakes
No motor only have both
What type of braking are used for the service brake
ED and EP
What brake systems do xtrap have
Service
Holding
Emergency
Park brakes
Where are the Tacho cables
4&8 T car
Where are park brakes fitted
1,3,7 M cars only
What is the purpose of the TCU?
Controls powering and ED braking
Do drivers use the High voltage supply switch?
No
What is the output of the SIVs?
400V AC ( steps down to 220vAC, 24vAC)
What equipment uses the 400v AC from the SIVS?
• 400/220v AC systems
• 110v DC System
•Air cons
• Air compressors
• Battery charger
• Traction cooling fans
In Normal operation what powers the low voltage DC equipment?
Battery Charger
If loss of overhead, what equipment powers the train?
Batteries
What is inside the auxiliary pneumatic panel
Whistle
Auto uncouple
Trip device
Trip device reset
Aux panel
What are the drivers responsibility in regards to the aux pneumatic panel for mainline preps
Check leading and trailing panels
At what pressure does the safety valve activate
980kpa
What equipment is lost if one SIV fails?
One air compressor
One air con
(Traction cooling fans and saloon lighting not affected)
What equipment is lost if one SIV fails?
One air compressor
One air con
Main res charges the aux res for what purpose
EP ( friction brakes)
What equipment is on the permanent low voltage line?
(3 answers)
Step light
Cab fluro
Panto motors
What is the main res operating pressure
750 kPa to 900 kpa
What energises the permanent low voltage line?
Batteries
If the compressor gov isolating cock is turned, what will happen to the compressor
It will stay in whatever position it was when isolating
What is the difference between prepared low voltage-cab operative and prepared low voltage line?
Cab operative- key in everything functions
Prepared low voltage is in service retention mode
What is the function of the air dryer
Removes moisture, debris, and oil from the compressed air
How do the air compressor work together
Both work when MR is below 650kpa until reading 750kpa where one turns off
How many air compressors are on a 3 car unit
2
If there was an issue with the speed threshold, how do you override it
Tacho bypass to bypass
What settings are kept in prepared low voltage line?
• Pantos raised
• Train prepped
• Settings of last cab in service memorised
• Marker lights, Doors, saloon lights remember settings prior to key removal
Where is the battery box isolation switch housed?
A side T car inside battery box
What equipment/functions require the train to be at 0.5km to operate (4 answers)
Uncouple
Saloon doors release
Resetting the safety loop after trip
Resetting safety loop during rescue after a reduction in BP pressure
How long should batteries power train if loss of power?
1 hour
What is the speed threshold speed
0.5 km
What can you do to conserve power?
Turn cab equipment off, saloon lights to emergency ect
Where are the Tacho cables located
Wheel 4&8 on T car
How many tacho cables for the tachometer on a 6 car train
4
If no battery power on train start up when attempting to raise pantos, what should the driver do?
Check battery not isolated
Can a driver reinstate isolated batteries?
No call fleet
How do you locate and reset a DER
CCTV camera to locate, then use tri key and twist back to horizontal
What is the result of the Saftey loop de-energising?
Emergency brakes will apply
If a DER has been pulled in running, will you still have traction power
Yes, until stationary
What indications would a driver get if the safety loop de-energises?
• Emergency Brake applied
• Recording of Emergency Brake application by the Data Logger
• Inhibition of Electrical Braking and Traction (Friction Brake ONLY applies)
• Emergency Brake fault light illuminates on the Fault & Status panel
What indication would you get in the drivers cab when a DER had been pulled
(4 answers)
FDCL
DER status light Illuminated
Flashing red ANSW button
DDU tone
Where are the external door releases located
M: 1,2,5,6
T: 2,5
If attempts fail to remove obstruction from door, how long will the tone sound for
60 sec
What are 10 things that can open the safety loop?
• MR below 580kpa
•BP below 300kpa (rescue)
• Trip
• Hand/Foot not set or auto vigilance not pressed in 40 seconds
• VICERS
• Loss of 110v DC
• Master controller in emergency
•ESB
• 2keys
• 23Q1, 23Q2
How do you test the safety loop during a prep ?
Safety loop bypass switch to test
What do you need to do if there is a fault and you can’t get the safety loop to close?
Detrain, Bypass safety loop (drive while holding switch)
How do you apply emergency brakes if the safety loop is bypassed?
Let go of switch
What is the safety loop rescue switch for?
To allow a trickle charge to the batteries from a rescuing Xtrap
If there is an obstruction in the door, how many times will the secondary release feature operate?
4 times at 3 second intervals
