Traction Motors

Transmission System

To reduce the impact and wear on the track, the four ASEA LJMA 410F electric traction motors are mounted inside the body of the power car with cardan shafts driving lightweight gear-boxes to complete the final drive to each axle.

Traction Motor
Drive Shaft
HK Brake
Transfer Gearbox
Cardan Shaft
Final Drive Gearbox

The ASEA motors are force ventilated, six pole, fully compensated, separately excited direct current traction machines.

Rated output
750 kW
Maximum speed
2600 rpm
Maximum Voltage
900 V
Maximum accelerating current
1800 A
1950 kg

The armatures are connected in an all parallel arrangement, each under the control of two thyristor converter. The fields are also in parallel but separately excited.


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Last Revised: 27.09.2022 13:50
by R G Latham
© 2002