Vehicle Type

1

AUX input contactor
Isolate auxiliary inverters
from the DC-link

2

AUX output contactor
Isolate auxiliary loads
from the auxiliary inverter

3

Battery charger input contactor
Isolate battery chargers from
the primary power supply

4

Battery charger output contactor
Isolate auxiliary batteries
from its charger

5

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

6

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

7

Traction converter fan
Dissipate traction
converter power
losses through
forced ventilation

8

Isolating Earthing switch
Ensure circuit isolation
and grounding for
safe maintenance

9

Line contactor
Isolate the railway vehicles
from the power supply

10

Pre-charge contactor
Control the circuit
capacitors pre-charge

11

Discharge resistor
Limit the current during
filters discharge

12

Damping resistor
Damp the inductance voltage
and capacitor current

13

Pre-charge resistor
Limit the current
of pre-charge

14

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

15

Braking resistor
Dissipate the exceeding
electrodynamic braking power

16

AC/DC Metering
Measure consumed and
regenerated DC energy

17

Motor Isolation Contactor​
Isolate the motor and
protect the inverter