Converters for traction drive PTA

photo_pta-convertersThese converters were developed during urban electric transport revamping program. They are used in Ekaterinburg, Samara, Nizhny Novgorod, Oryol, Nizhny Tagil.  


Main functions:

  • Converters are used for power supply and speed control of asynchronous traction motors. They were developed for tram cars 71-405, 71-407 manufactured by Uraltransmash, Ekaterinburg.


  • Converters are used for power supply of traction drives of trams with asynchronous motors. They can also be used for trams of other types and trolley buses.

Rated supply voltage, V 550
Range of input voltage variation, % From +50 to -50
Rated output voltage, V 3AC 345
Rated output voltage frequency, Hz 60
Range of output voltage frequency variation, Hz 0–150
Rated power, kWt 108
Rated output current, A 250
Maximum output current, A 460
Converter efficiency factor, not less than, % 97
Control circuit voltage, V DC 24 ± 30% from external power supply
Power consumed by control circuits, up to, A 10
Operating ambient temperature, °С From -40 to +40
Relative air humidity Up to 100 % at +25° С
Unit height above sea level, m Not exceeding 1000
Protection class IP54
Dimensions (H х W х D), mm 350 х 1300 х 1000
Weight, kg 170


Cabinet for power contactors (А0); cabinet for circuit breakers 550 V (А1); cabinet for circuit breakers 24 V (А2); control cabinet (А6); cabinet for heater keys (А8); tram car automatic control system SKAT-4.

Guaranteed service life is 12 months from putting into operation, but no longer than 18 months from delivery date.