Electrostar Traction

Question 1

M O S L
Meaning

Answer 1

Motor open standard lavatory

Question 2

P T O S L

Answer 2

Pantograph trailer open standard lavatory

Question 3

D M O S

Answer 3

Driver motor open standard

Question 4

4 car
Dual
fixed

Answer 4

375.6
377.5

Question 5

Which class
3 car DC fixed

Answer 5

375-3
377-3

Question 6

Which class
4 car. Dual voltage. Retractable shoes

Answer 6

375-7
377-5

Question 7

4 car
DC
Fixed

Answer 7

375-7
377-1

Question 8

Which class
4 car DC. Retractable +. Anti icing or high density seating

Answer 8

375-8
375-9

Question 9

ACM
3 different voltages and what’s used for each

Answer 9

110dc. Batteries , emergency lighting , control feed

240ac. Janitor sockets , body side heaters.

415ac. HVAC. Compressor (local & remote)

Question 10

DMOS drivers side
B B B M M B

Answer 10

Battery box
Brake frame
Brake control unit
Main circuit breaker
Motor converter module
Brake fan resistor

Question 11

DMOS non drivers side
A B C D E L B S backwards

Answer 11

Sand hopper
Back of brake resistor fan
Line converter module
Earthing switch shoe gear
Do not touch- electrical connector gap
Contactor box (dc equipment)
Back of battery box
Auxiliary converter module

Question 12

M O S L.
Layout outside

Answer 12

Motor open standard lavatory

Non drivers side
Contacter box. line converter module (375-6 & 377-5 only)

Drivers side
Brake frame - brake control unit - main circuit breaker - motor converter module - brake fan resistor

Question 13

Body end cupboards MCBs x 4

Answer 13

1. Brake controls
2. Mitrac
3. Compressor local & remote (PTSOL only)
4. Auxiliary compressor (PTSOL only)