1

Data Collection System
Collect energy
data from vehicles

2

AC/DC Metering
Measure consumed and
regenerated DC energy

3

Braking Resistor
Dissipate the exceeding
electrodynamic braking power

4

Braking Resistor Fan
Provide forced ventilation
to braking resistors

5

Machine Room Blower
Ensure ventilation and
fresh air circulation
in power cabinets

6

Main DC circuit breaker
Protect electrical equipment
from short-circuit damages

7

Isolating Earthing switch
Ensure circuit isolation and
grounding for safe maintenance

8

Data Handling System
Manage Energy Billing Data (CEBD)
files for the ground-based Data
Collection System (DCS)

9

Heater contactor
Control heating resistors

10

Coach power supply contactor
Isolate coaches from the
primary power supply

11

DC/DC converter output contactor
Isolate DC/DC converters from
Fuels Cell or Traction Batteries

12

DC/DC converter input contactor​
Isolate DC/DC converters from DC-links

13

Line contactor
Isolate the railway vehicles
from the power supply

14

Precharge Contactor
Control the circuit
capacitors precharge

15

Precharge Resistor​
Limit the current
of precharge

16

Discharge Resistor
Limit the current
during filters discharge

17

Isolating Earthing Switch
Ensure circuit isolation and
grounding for safe maintenance

18

Motor Isolation Contactor
Isolate the motor and
protect the inverter

19

Traction Converter Fan
Dissipate traction converter
power losses through
forced ventilation

20

Traction Converter Fan
Dissipate traction converter
power losses through
forced ventilation

21

Battery Charger Output Contactor
Isolate auxiliary batteries from its charger

22

Battery Charger Input Contactor
Isolate battery chargers from
the primary power supply

23

AUX Input Contactor
Isolate auxiliary inverters
from the DC-link

24

AUX Output Contactor
Isolate auxiliary loads
from the auxiliary inverter

25

Traction Motor Blower
Dissipate traction motor
power losses through
forced ventilation