|Rail gauge||1000 mm|
|Car body length||18.110 mm|
|Car body width||2.200 mm|
|Car body height||3.400 mm|
|Standing||85 (6 pers/m2)|
|Wheel diameter||700/610 mm|
|Tractions motors||4 mot. tip TE 022 H|
|Caracteristics||40KW; 300VDC; 150A; 1650rpm|
|Traction control||chopper cu IGBT|
|Maner of fiting||instead of accelerator|
|Control unit||with microcontroler|
|Construction||DE electronic plate plug-in unit|
|Supply||24VDC (+/- 20%)|
|Auxiliary power supply||static converter|
|Nominal output power||8KVA|
|Maximum output current||130ADC|
|Outputs voltage||3x380VAC / 50Hz
After 1990 the transport administration of Romanian cities bought KT4D trams manufactured between 1970-1980.
The trams adaptation to the power supply of 750V which is the most used in Romania is difficult to be achieved and it is done with an additional energy consumption.
Therefore, is required the electronic equipment using both for the traction part and for the auxiliary power supply.
INDAELTRAC S.A offers choppers for the traction part by keeping the existing motors and the static converter for the auxiliary power supply by changing the traction motors ventilators.
The advantages of the chopper using on KT4D tram:
The static converter assures the storage batteries charging as well as the whole DC consumption and it offers a 3x380 VAC threephase system that allows the supply of the traction motors ventilators.