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What are the 19 principle elements of a locomotive?
- Traction converter
- Reasonant capacitors
- Oil cooling heat exchanges
- Traction motor blowers
- Air reservoir
- Auxiliary convertor
- battery charger
- Battery racks
- Train rectifier (1500v)
- Halon bottles (fire protection)
- Radio communications cubicle
- Automatic train protection
- Locomotive control electronics and fire protection
- High voltage roof equipment
- Heating, ventilation and air conditioning equipment
How many Bogies per loco?
How many motors per loco?
Maximum haulage of a loco?
2300t per loco
Max speed and power of a loco?
- 160 kph
- 7600hp 7 megawatts
Name the six parts that make up the boogie?
- Primary suspension
- Secondary suspension
- Hydraulic shock absorbers
- boogie frame
- traction motor
- monoblock wheel
How is compressed air made and distributed around the locomotive?
- Made in main compressor - sent through a dryer, filter and desiccator into a main reservoir (3 tanks of 350l) to a maximum pressure of 10bar.
- This then supplies the braking system CG, the CP and ancillary items (horn, wipers, sanders and VCB)
- The CP has a 5.3 bar stop valve that prevents air pressure dropping below this in the main system should there be a leak in the main CP. It also stops air flowing into the CP until the pressure in the main reservoir is 5.3. This pressure is vital to keep the pantograph up and the VCB closed.
What is the purpose of the auxiliary compressor?
Runs of the 110v batteries and enables the raising of the pant and closing of the VCB when pressure in the main reservoir is less than 6 bar. e.g. after the loco has been shut down.
What is compressed air needed for in the loco?
- Raise pantographs
- close the vcv
- supply the main reservoir (this runs various other equipment)
What voltage does the low voltage system work off?
What voltage is supplied to auxiliary circuits and what is it broke down too? What does it operate?
- Main compressor
- Oil pumps and ventilators for the for the transformer and power converters
- The battery charger
- The traction motor ventilators
What voltage is fed to the traction motors?
2500V split to 2100v each motor runs at 1300v
What voltage is supplied to the rest of the train?
Name the 6 types of brakes found on the loco?
- Automatic continuos brake (main brake)
- electr-pneumatic brake (EP)
- direct brake
- electo regenerative brake
- parking brake (brake shoes on the loco)
- manually controlled emergency button
What are the two ways the parking brake can be applied?
- Manually by the yellow push button in the cab.
- Automatically - gradually replacing the pneumatic brake, as it is released. And if there is a leak in the brake cylinder it will automatically come on.
What is the purpose of the neutral function in the PBL 90?
- To interrupt the supply to the CG in the event of emergency braking.
- To enable the integrity of the CG to be checked during the full brake test.
What is the purpose of the aid cock?
If the automatic brake fails then you can then turn the aid cock to use the direct brake as you main brake. You will then have to run on speed restrictions as you will have no EP braking.
Purpose of the CG overcharge?
If you have to change ends of the train the PBL90 will have different pressures that govern the braking system. e.g. 5.1 in old front 4.9 in new. Doing a CG overcharge to 5.4 will then equalise the pressure and reset the brakes. Takes 8 mins. If need to use brakes in this period, have to redo CG overcharge.
What actions should a driver take with an alarm level 1 on the VDU?
Make a note to put on service sheet and Carnet de board. No problem to the driver.
What actions should the driver take when you get an alarm level 2 on the VDU?
This will give you a fault code which you must make a note of and place in the carnet de board and service sheet.
What is EP ?
Electro pneumatic braking - this makes all the brakes on the train work together by sending an electronic signal.
Where are the parking brakes located on the locomotive?
Right hand side on axles 1,3 and 5.
What functions remain active when the loco is in stand-by?
- The pantograph is raised
- the circuit breaker is closed
- the compressor is working
- then1500v supply is maintained
What is the procedure for shutting a loco down?
Remove the number 1 key without pressing the standby button
What info has to be entered into the ATESS recorder?
- Mission number
- staff id number
What error codes may you see on the ATESS recorder and how would you deal with them?
CAE or DEF - use the application instructions
Where would you find the intermittent data loops for auto uplift stop?
Just inside the UK end PK10200 and just outside the French end PK60564.
At what speed does the VACMA pedal become active and can you perform a running vacma test from?
Brake faults with no drop in CP/CG pressure. If you had an EP failure what would you do and what would be the consequences?
Firstly isolate EP, then turn EP back on. If this does not fix the EP then you should re-isolate and then drive to the speed table. Traction should not be reapplied after braking for 1 min in normal braking and 3 mins after EM braking.
What is emergency clearance?
If the computer link between the two locos fail then both locos will stop working. Therefore the emergency clearance light will flash allowing you to have limited control of loco 2 and loco1. You will loose all info on loco 2 on the VDU, have no regen, no cruise control, continuos display of 160 on vdi and reference speed.
If the line voltage is 17500v or lower what will happen?
The VCB's on the loco will open
If at a platform and line volts are below 19000v what should you do?
- Contact the RCC, put the power controller to 0
- If while driving then coast.
If you have a complete unexpected loss of catenary power what should you do?
Bring to a controlled stop, lower pantographs and contact the RCC.
If the STOP lamp in the cab illuminates what should the driver do?
Carry out a controlled stop. Refer to the application instructions
What would you like to do?
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