Mechanical Flashcards
M1 (AMP) car roof is fitted with…
- Pantograph Assembly, which includes :
-Two surge arrestors
-Energy meter
-Vacuum Circuit Breaker (VCB) - Two Saloon HVAC units
- Drivers cab HVAC unit
- Antenna (VHF and 3G data)
The M1 (AMP) car underframe is fitted with…
- Main Transformer for the entire consist
- Traction Converter (this car’s traction motors only)
- Balise reader
- Air Compressor
- Car Brake Control Panel (BCP)
- Pantograph raising module (for manual raising if required)
- 4 airbag suspension air reservoirs
- 2 airhorns
- Recovery coupler adapters
The T-Car (AMT) roof is fitted with…
- Two saloon HVAC units
- Antenna
T-Car (AMT) underframe is fitted with…
- Two 110V DC batteries
- Air brake reservoir
- Main reservoir
- Car Brake Control Panel
The M2 (AMA) car roof is fitted with…
- Two saloon HVAC units
- Operator’s Cab HVAC unit
- Antenna
The M2 (AMA) car underframe is fitted with…
- Two Auxilliary Power Converters
- Traction converter for this car’s traction motors only
- Balise reader
- Air compressor
- Car Brake Control Panel
- Four Airbag suspension air reservoirs
- Air brake air reservoir
- Two air horns
- Flange lubricating unit (operates on leading bogie only)
- Auxilliary Brake Control Panel
Motor Bogies (AMP & AMA units)
Motor bogies are fitted with:
- Traction motors, and
- Air brake assembly (2 per bogie, diagonally opposite each other)
- Primary suspension assembly
- Secondary suspension (airbags) assembly
- Park brakes fitted to each air brake assembly
T-Car Bogie
T-car bogies are fitted with:
- Trailer wheel set assembly
- Primary suspension assembly
- Secondary suspension assembly (air bag)
- Air brake assembly (one per wheel)
Note: No traction motors or park brakes on t-car bogies.
Flange Lubrication
Reduces wear on the wheels and track on tight curves and will also decrease wheel squeal.
Defective headlights/ ditch lights
In a depot:
• If a failure occurs prior to entering service, another unit will be taken if available
• If the unit can not be replaced, the defect must be repaired by depot personnel before the unit is released for service.
Voltage EMU can operate is…
Between 19,000v & 27,500v
Vacuum Circuit Breaker
Used as an in-line circuit breaker to open and close the power circuit.
Main Transformer (on M1 car)
The Main Transformer receives 25,000 VAC from the overhead line and transforms it to:
- 1000 VAC at 4 x 400 amp supply to the Traction Converters on the M1 & M2 cars.
- 429 VAC at 2 x 291 amp feeds to the Auxilliary Power Converters (APS) 1 & 2 on the M2 car.
Auxilliary Power Converters (APS) (on M2 car)
- Located under the M2 car
- Convert one of the Main Transformer outputs to supply 400VAC Hotel supply & 110VDC for the DC systems
APS1: Supplies the power requirements of the M1 car and half of the T-car and one battery charger
APS2: Supplies the M2 car, the remaining half of the T-car and the other battery charger
Air Systems on EMU
- Friction service brakes
- Emergency brakes
- Secondary airbag suspension
- Operator’s cab service horns, and
- Pantograph raising mechanisms
Traction Converters
Traction converters are found on both the M cars. They power each motor car’s four traction motors. The power output from the traction motors is determined by the position of the T/B handle.
Air Compressors
In normal service only one compressor operates as determined by the TMS and total running time of the compressors.
During service the operating compressor maintains the Main Reservoir (MR) pressure between 850KPa and 1000 KPa. If there is heavy demand, and the MR pressure falls below 750 KPa then both will run until pressure reaches 850 KPa. One compressor will then return to standby mode.
Compressor Isolating Valves
Located under front passenger door, B side (right)
MR & BP Isolation Valves
Located between each car and between each M car & the automatic coupler. These allow the MR and BP for that car to be isolated.
If the MR or BP for a car needs to be isolated then the adjacent valves on the adjoining car or coupler must also be isolated.
Auxiliary Isolate Valves (Horns & Coupler)
Mounted behind a labelled cover, B side (right), in front of the Operator’s cab door - four valves which isolate:
- Auto-coupler
- Auto-coupling control circuits
- Horn 1
- Horn 2
