TLIB3123 Apply awareness of motive power unit fundamentals

Each “A” series Electric Multiple Unit (EMU) is equipped with how many traction motors

6

What is the A series max speed?

110 km/h

How many cars does each A series compose of, how long are they each, and what are they named?

Each A series EMU consists of two cars which are 48.42 metres in length. These are Driver Module A (DMA) and Driver Module B (DMB) car.

1. What are the cars of the A series named?

2. How are the ends of each end numbered?

1. Driver Module A (DMA) car, Driver Module B (DMB) car

2. No1 end = driving compartment end
   No2 end = ends that are joined together (semi-permanently coupled)

The No1 end of the A and B series DMA car will face towards _____ or ______

Fremantle or Yanchep (previous endpoint Butler)

the No1 end of the DMB railcar of A and B series will face towards…

Armadale/Midland or Mandurah

If you’re approaching a caution, what’s a good rule of thumb speed to reduce to

Half the track speed.

In an assessment, don’t pass a caution leaving it in power - usually at least minimum brake

How many traction motors does a B series EMU have?

8

What is the max speed of the B series

130km/hr

Are B series vehicles permanently or semi-permanently coupled?

Permanently (with semi=permanent couplers)

How many car-sets can the B series have?

• Vehicles are permanently coupled into 3 car sets

• 3 car sets may be coupled into 6 car sets

In the A series, how can you tell which end is the A car?

The car number will start with an even number (maybe always 2??)

How is each car named in a B series set?

DMA-car → T-car → DMB car

On the A series, what does the pantograph use to rise to the OLE?

Compressed air (aux compressor feeds into aux reservoir)

There are 10 components of the A series air system - name as many as you can

1. Pantograph

2. main compressor

3. auxiliary compressor

4. main reservoir tanks

5. main reservoir pipes/hoses

6. horn

7. wiper/washer

8. passenger doors

9. spring park brakes

10. air suspension

Which 7 pneumatic equipment types does the A series main reservoir air tanks supply air to?

1. Spring Park Brake

2. Air Suspension

3. Window Washer, Wiper

4. Pantograph

5. EBC5 units/EP bakes

6. Passenger doors

7. Horn

What does the Main Compressor Governor do?

Is an electrical switch that opens and closes by Main Reservoir Air Pressure.

It starts and stops the compressor when the minimum or maximum pressure is reached in the main reservoir tanks.

What does MCB stand for

Main Circuit Breaker

What is this (yellow highlighted)?

Auxiliary compressor

What are each of the numbered components?

1. Auxiliary compressor

2. Auxiliary compressor isolating valve (usually red, can be black)

3. Auxiliary reservoir

4. Pantograph drain valve (black)

What is Mark pointing to on the A series (highlighted in yellow), and where is it located?

Flexible pneumatic hose.

Located between EMU A Series between DMA No.2 end and DMB No.2 end

Name the 7 components of the High Voltage Equipment

1. Pantograph - held down by spring pressure, pushed up by air pressure in panto lifting cylinder with air from aux compressor.

2. High Voltage Potential Transformer - next to panto.

3. Main Circuit Breaker (MCB) - DMA car - white - two contact heads forced together by compressed air piston - MCB will not close unless panto raised and line to voltage present, then current passes to Main Transformer (underframe). Will open if air pressure falls below 340kpa.

4. High Voltage Cable

5. Current transformer

6. Ground switch - drivers cannot access - via interior cab. When closed, connects MCB to Traction Return rail via metal body of car

7. Lightening arrestor

What does the Main Converter do?

Convert AC to DC

What is the APC and what does it do?

1. Automatic Power Control

2. Opens the MCB (disconnect power to railcar) when approaching neutral section, close MCB when panto entered live section

What does the Main Transformer on the A series do?

Converts line voltage (25KV) to:

1. 1003 AC voltage to Main Converter, and

2. 849 AC to Aux Converter

What does the Main Converter do?

Converts AC voltage from Main Transformer to DC voltage for traction motors

What does the Auxiliary Converter do?

Converts volts and phases to supply power to:

1. Main Compressor

2. Auxiliary Transformer

3. Dynamic Brake Resistor grid blowers

4. Air Con Units

5. Main Transformer Oil Cooling Pump

6. Saloon lights

What does the Auxiliary Transformer do?

Transforms AC volts and phase, then supplies power to combined Battery charger and Supply unit, which supplies power to:

1. wipers

2. cleaning outlets

3. video recorder

4. foot heater in cab

What do Unit Wires do and where are they located on the A series?

What does the Battery do and where is it located on the A series

1. Provide initial source of low-voltage DC current (110v) to start auxiliary equipment during prep of train i.e. aux compressor

What do the Driver’s Circuit Breakers do and where are they located on the A series?

Interrupt current flow to protect the equipment and to prevent fire

What does the EBC5 unit do?

Blend both dynamic and friction braking systems

How are park brakes applied and released (mechanism)?

Applied by springs, released by air

What is door traction interlock?

If doors open, cannot go into power

Where in the main converter on the A series railcar? What does it do?

1. DMA 1 RHS

2. Convert AC to DC

Auxiliary transformer on A series - what does it do? where is it? can we go into it?

1. Powers the

   1. Battery charger

   2. Cab lights

   3. cleaning outlets + wipers

   4. Foot Heater

   5. Video cameras

2. DMB middle RHS

3. Yes

What does the battery do

Provide secondary power supply to aux compressor and other minor electrical components

What does PEI stand for and where are they on A series?

Passenger Emergency Intercom

How do you apply emergency brake in A series?

Red lever in driver’s cabin

Where in the A series cabin are the circuit breakers?

Rear Switch Panel

Who can give permission to touch sealed circuit breakers in the cabin (e.g. ATP)?

DC

Which electrical boxes are train drivers allowed to access on an A series, where are they, what do they contain?

1. UK 39 Box - circuit breakers

2. UK 40 Box - circuit breakers

3. Aux transformer / 20 Box - DMB no.1 RHS - circuit breakers, feeds batteries and charges Aux Transformer

4. Battery Fuse Box

Describe the current path of high voltage equipment on the train roof, and other components that are present + what they do

Pantograph (brings 25KV down from overhead line) →
high voltage potential transformer (Measures the voltage coming in from the overhead line)→
Main Circuit Breaker + lightening arrestor →
(under roof)
Ground Switch →
current transformer

What does the battery provide power to?

What two types of bogies are there, and how many on each of A and B series?

1. Motor Car (traction motor-driven), Trailer Car (lazy bogie)

2. A series: 2 motor bogies DMA, 1 DMB, 1 lazy DMB no.1
   B series: 2 motor bogies on DMA and DMB, 2 trailer on T car

How do the Park Brakes operate and where are they located?

1. Spring applied, air released

2. On RHS of each motor bogie

How is a service brake applied?

Air operated disc callipers

What 2 types of couplers are used on A and B series?

1. Automatic Scharfenberg Coupler (drive cabs both series) - auto connects air lines and electric cables

2. Semi-permanent Bar Couple (car joiners)

Name the controllers used for driving in the A and B series

1. Direction Controller

2. Power/Brake Controller

Where do Train Wires run, how are they joined between cars, where located, what voltage carried?

1. Run length of whole train

2. Joined by electrical connectors of Scharfenberg Couplers

3. LHS of train on no2 ends A series

4. Carry 100v for control circuits

What are brake pads held in place by?

Brake callipers

What happens in Dynamic braking?

When dynamic brake is in operation, the traction motors are converted to generators - momentum of train source of energy for generator

What does the EBC 5 unit do, is it electrically or pneumatically controlled, how does it operate, where located?

1. Blends dynamic and friction braking systems

2. Electrically

3. Air pressure received at the brake cylinders is controlled by two different components - driver’s Brake Controller (electric signals to EBC 5 to set braking demand). Uses dynamic and pneumatic braking . ATP connected to EBC 5 to allow intervention prn

4. DMA - 1 unit on 2 end RHS, DMB - 2 units on RHS (one for power, one for trailing)

How do you activate the driver’s cab?

Placing the Direction Controller in Neutral position

What does the Control Circuit Governor (CCG) do?

Ensures that there is enough Brake pipe (BP) pressure to operate the Auxiliary brake

How does the electro-pneumatic brake work?

Uses electrical signals received by the Drivers Controller to control the air pressure received by the brake cylinders

What type of braking does the B Series primarily use?

Dynamic braking (electric regenerative), then pneumatically operated friction braking if needed

How is friction braking achieved?

Air Operated Disc Callipers on the DMA, DMB and T car

What does the Brake Computer Unit (BCU) do?

determines the required friction braking needs to meet the total braking demand (Regenerative + Friction) and then allows MR air into the brake cylinders, with the use of dynamic brake to slow and stop the railcar

Where is the main transformer on the B series?

T car

What colour can marker lights be, where are they, when are they each colour?

Red when trailing, white when leading. On driver ends lower half

What does the RAPID Drivers Display Unit show?

touch screen panel which is a fully automated announcement system that works by GPS and is only installed on the A series railcars.

What is an Intelligent Display Unit (IDU) and what series is it on?

B series - RHS dash

Display events, and also the train status and is used as a Man Machine Interface (MMI) to the systems on the train.

What series has the Train Management System, what does it do?

B series

comprehensive fault indication system, the train management system (TMS), provides up to the second fault information to the driver via a touch screen in the cab. The function of the TMS is to monitor:

• Traction

• Friction Brake Control

• Door Control System

• Air Conditioning Control

• High Voltage Control

• Motor Converter Control

• Auxiliary Power Control

• Train Diagnostic System

What shows faults in the A series cab?

Fault Indication Panel - RHS dash

What does PEI stand for and where located on A series and B series?

Passenger Emergency Intercom

A series: RH1/LH2/RH3/LH4

B series:

What does LCM stand for, what series is it on, where is it located, what does it do?

1. Line Converter Module

2. B series

3. LHS DMB, RHS DMA

4. Convert AC from main transformer to stable DC voltage and feed back to catenary wire.

What does MCM stand for, what series is it on, what does it do?

Motor Converter Module - Feeds traction motors with variable AC voltage

B series

(The Motor Converter Module (MCM) takes DC power from the LCM and converts it into three-phase AC power to drive the traction motors.)????

What are the cameras called that face out from driver’s cabin to track?

Forward-facing cameras

What does PDS stand for and what does it do?

Platform Detection System

Prevents the unsafe release of railcar saloon doors if a platform has not been detected on the correct side adjacent to the railcar at the time the door release is attempted.

Where is the Main Compressor located on the B series

Centre of T car

On the B Series, what must you always do on your morning check w respect to couplers

Check that both set to electrical

In A series, what 2 systems control friction braking

EBC 5 and shadow brake

Brake computer unit on B series - what does it do

determines necessary pressure required for friction breaks (doesnt blend with dynamic which is always on, only determines when to add friction brake)

What causes spring park brakes to apply the brake pads to the brake disc on the EMU?

Release / exhaust of air from spring park brake unit

How check oil gauges on A and B series

A series: Qualitrol
B-series: Shot glass / sighter glass

What does door traction interlock system do?

Can’t move train when doors are open

Where the circuit breakers are in the cab - name of locker?

MEL locker (M Electric Locker)

In the B series, how do you isolate doors 49 to 79, and 80 onwards?

Above each door

3-way valve, used in breakdown scenario

What colour are the bogie isolation switches on B Series

Blue switch

Two brake types on B series

EP (electropneumatic) and shadow break

What boxes can you go into on an A series exterior?

1. 39 Box

2. 40 Box

3. Battery fuse box

4. Aux transformer

How many doors does the A series 2 car set have and how are they numbered?

1. 8 doors

2. L1, R1, L2, R2, L3, R3 etc

Which car is the pantograph located on for each of the A and B Series?

A Series - DMA car

B Series - T car

Which is the T car no.1 and no.2 ends?

No.1 by DMA, No.2 by DMB

Where is the main compressor, main res, and EBC5, aux compressor units of the A series?

DMB LHS: main compressor, main res
DMB RHS & DMA RHS: EBC 5
DMA RHS: aux compressor

What colour are saloon door isolating valves on A series on the exterior?

Yellow

What colour are the Local Supply isolating valves on the A series and how many are there?

Blue

2 on the RHS no.2 ends, 1 in each cab cabinet RHS of dash = 4

Where is the Emergency Brake in the A series?

Red level on vertical surface RHS of dash

What do they flexible pneumatic hoses do?

Supplies MR, BP and Local Supply air between the DMA and DMB cars

Where are the main and aux compressors and air res’s on the B Series?

Main compressor RHS T car, 200L air res next to it
Aux compressor LHS T Car, 125L res next to it

What does the Air Raft on the B Series contain?

Isolation valves for:

1. MR supply to Brake Unit

2. Park Brake Supply

3. Air Suspension

What does the Main Converter on the A series do and where is it?

Changed 1003 AC voltage from Main Transformer to 750 DC volts for traction motors

on DMA car

On the B series, where are the Main Compressor and aux compressor located, and what do each do

1. On the T car (aux LHS, Main RHS)

2. Main Compressor - supplies compressed air to the system

3. Aux Compressor - battery operated to supply compressed air to pantograph (and close MCB)

What is the main function of isolating valves?

can be closed to protect faulty equipment or stop an air leak by isolating the piece of pneumatic equipment from its air supply.  

On the B series, name the components of the air raft, where they are, what they do, and where air rafts are located

1. MR supply to Brake Unit - top left - isolates MR supply to brake computer to release service brakes (failed car only)

2. Air suspension isolation - top right

3. 3-way valve - Park Brake supply from MR/BP - transfers air from main res to brake pipe to park brakes