7.3 Flashcards
What is the official name of the Class 730 units?
Class 730 Aventra Electric Multiple Units
What two types of configuration are the Class 730s and what are their speeds?
730/0….. 3 car - Max 90mph
730/2….. 5 car - Max 110mph
What is the layout of a 3 car?
DM1 490 - PMLW 492 - DM2 494
(Driving Motor 1 - Pantograph Motor
Lavatory Wheelchair - Driving Motor 2)
*Pissing Myself Laughing in a Wheelchair
What is the layout of a 5 car?
DM 490 - M1L 491 - PMLW 492 - M2L 493 - DMC 494
(Driving Motor - Motor Lavatory 1 - Pantograph Motor Lavatory Wheelchair - Motor Lavatory 2 - Driving Motor Composite)
What vehicle is the Pantograph located?
Pantograph Motor Lavatory Wheelchair (492)
Number 1 end
How many traction motors are on each vehicle?
2
How many air compressors are located on a Unit? Where are they located?
2 - One on each DM/DMC cars
(on the leading end and back of the Unit)
*Only one air compressor runs at a time, decided by the TCMS on a rotational basis averaged out over the year
What is the type of coupling? (Including the Type)
Dellner Type 12
Semi-permanent coupling between vehicles
When can a 3 car be coupled to a 5 car?
In an assistance situation only
What is the maximum length of train (for passengers, and then for ECS) for a 3 car unit and a 5 car unit? (Max 3 pantographs raised)
3 car = 9 vehicles in passenger service, 12 in ECS
5 car = 10 vehicles in passenger service, 20 in ECS
* For ECS = number of cars x 4 I.e. 3 x 4 = 12…… 5 x 4 = 20
Powered axles are located on each vehicle. Which end(s) are they in a 3 car formation?
DM1 and DM2 = Number 2 end (Rear drive)
PMLW = Number 1 end
Powered axles are located on each vehicle. Which end(s) are they in a 5 car formation?
DM and DMC = Number 2 end (Rear drive)
M1L and M2L - Number 2 end (Rear drive)
PMLW = Number 1 end
Explain the electricity supply…..
25,000 volts - Collected by the PANTOGRAPH located in the PMLW vehicle - Current travels via the LINE CIRCUIT BREAKER located in the HIGH VOLTAGE BOX - Current goes into the MAIN TRANSFORMER where the AC is converted into DC - This output from the Transformer is then sent to the 2 LMA Propulsion Modules - The power is then distributed to the TRACTION MOTORS via the Motor Converter Modules and to the AUXILIARY SYSTEMS via the Auxiliary Converter Modules
The Line Circuit Breaker is located in the High Voltage Box on the roof next to the Pantograph. Its purpose is to connect or disconnect the High Voltage system to/from the electricity supply. When would the LCB open? (7)
ADD operated
Pantograph has gone overheight
Neutral Section
Fault on traction equipment requires disconnection from OLE
Pan Down command has been given by the driver in an active cab
Stabled mode is selected by the driver
Line voltage is either too high (27,500 V) or too low (17,500 V)
At what high and low OLE voltages would the LCB (Line Circuit Breaker) open at?
High = 27,500 volts
Low = 17,500 volts
What does TCMS stand for?
Train Control and Monitoring System
On the TCMS screen you will get a picture of the Pantograph, it will either be in a raised position or a lowered position. If it’s raised and everything is ok the picture is blue and through a Neutral Section the picture is yellow. If the Pantograph is in a lowered position and you are on the move, what should your actions be?
Press Pan Down and stop immediately
(Yellow picture = Overheight operated……. Orange picture = ADD operated)
Compressed air raises the Pantograph. However, at start up, if the air pressure is below 5.8 bar, what is used to raise the Pantograph?
Auxiliary Compressor (operates automatically when you press Auxiliaries On if air pressure is below 5.8 bar… takes about 30 seconds for the air to build up)
How do you raise the Pantograph?
Press “Auxiliaries On” to energise the cab
Wait for the Pan button to flash
Press and release the Pan button
Confirm Pantograph is raised by looking at the TCMS symbols (blue symbol in the raised position)
If you press Pan Down from an active cab, what will this do?
First it trips the LCB (Line Circuit Breaker) and then lowers the pantograph
What are your actions if the ADD is operated…. how will you know about it?
Pan down - stop immediately - contact the signaller - acknowledge the TCMS alert
(you will know because the orange lowered pantograph symbol will appear on the TCMS)
How do you isolate the ADD?
Via the TCMS (under Power and Brake)
What are your actions if the overheight control has operated…. how will you know about it?
Pan down - stop immediately - contact the signaller - inspect the pantograph
(you will know because the yellow lowered pantograph symbol will appear on the TCMS)
What isolation switch isolates the pantograph, and where is it located? (Hi-VIS)
High Voltage Isolation Switch - No.1 end of the PMLW, behind a passenger seat
(Hi-vis)