Train Electrics Flashcards
The high voltage circuit and equipment comprises of what equipment? (7)
Panto
Lightning arrester
2 HSCB
line inductors
Traction inverter
Rheo brake resistor grids
SIVs
How many traction motors?
4 on Mc
What power do the traction motors use?
3 phase variable AC
What does the TCU do?
Controls voltage into the traction motors
The low voltage circuit comprises of what? (6)
Aux inverter
400/220vAC system
110vdc system
24 v ac/dc system
Batteries
Air con
What do the SIVs produce?
400vAC
The battery charger produces what to a max of what?
110vdc to 123.6 v dc
What do the SIVs supply power to? (6)
400/220vAC system
110vdc system
Battery charger
Air con
Air compressors
Traction cooling fans
What is connected to the 400vAC system? (4)BATH
Air compressors
HVACs
Traction cooling fans
Battery charger
What is connected to the 220vAC system?
GPOs
What happens if one SIV fails? (5)
Other SIV will power:
No.1 air con on each car
No.1 air compressor
Full saloon lighting
Both traction cooling fans
Battery charger
What lines are in the low voltage 110vdc system (3)
Permanent low voltage
Prepared low voltage
Prepared low voltage and cab operative line
What is connected to the permanent low voltage line? (Battery powered)
Panto electric motor
Step lights
Cab fluro light
What is connected to the prepared low voltage and cab operative line (key in and on)
110vdc stuff and trainlined stuff like Pantos
Doors
Safety loop
Traction
Braking
Comms
Saloon lights
Prepared low voltage line is connected to what? ( key comes out)
Service retention mode so
Pantos stay up
Markers lights saloon door and lights will remain in the settings before the key was removed
24vDC supplies power to what?
Smaller things like
Seat
Marker lights
Speedo
Windscreen wiper washer
MAD
Brake indicator lights
24v AC powers what? (2)
High beams
CCTV in saloon
How long will the batteries power the train for?
One hour
The safety loop comprises of what components? MEETV
ESB
Emy position
vigilance devices
Trip
The monitoring pressure switch in the MR and BP on the trailer
The softy loop is protected by what CBs?
23Q1 safety loop positive
23Q2 negative
If the safety loop de energises what will occur? (4)
Emy brake applies
Emy brake fault light
Data logger will record emy application
Inhibition of the electrical brake and traction
Emy brake will apply when? (11)
MR below 580
BP below 300
Trip
Hand or foot not set
Auto vigilance not pressed
VICERS
Emy brake handle
ESB
Loss of 110vdc
23Q1 and/or 2 trip in lead
Multiple cabs active
How do you reset the safety loop
Remove the cause of the emy brake application
When the safety loop is bypassed can you make an emy brake application?
No
How long do the saloon doors remain open for?
1 min
How long will doors 1256 stay open for when the key is removed to assist a passenger?
10 mins
How many times will the doors attempt to close?
4 times 3 sec intervals
What does the door loop bypass do?
Allows traction with a FDCL
If a DER is pulled what do you get in the cab? (4)
FDCL
CCTV will come up
Answer button will flash
Door emy handle activated status light
If a DER is pulled while running will you still have traction power?
Yes
How do you reset VICERS?
Stationary 10 sec
Coast
Push Vicers
