ENI-PT600/24/AC/EL Converter

Przetwornica ENI-PT600/24/AC/EL
Przetwornica ENI-PT600/24/AC/EL



The ENI-PT600/24/AC/EL static converter is intended as a 3 x 400 VAC and 24 VDC power supply for auxiliary systems in low-floor trams.


 Rated input voltage  600 VDC
 Supply voltage variation  400 to 900 VDC
DC output
 Rated voltage  27,9 VDC ± 0,1 V
 Rated output current  350 A (400 A current source mode for 30 s)
 Battery charging current limit  25 A ± 2 A
 Protections  output terminal shorting
 AC voltage output
AC voltage output
 Rated voltage  3 x 400 V +N (50 Hz)
 Rated power output  17 kVA
 Protections  shorting and overload
Integrated autostart systems (w/o battery voltage)
 Cooling  natural
 Ambient temperature  -30°C to +40°C
 Enclosure protection rating  IP65


The converter is installed in a sealed and robust aluminium sheet enclosure which houses all its necessary equipment. The enclosure is preserved with a powder coat finish. The cover facilitates service access to the converter interior. The cover has a reflective aluminium shield which protects the converter from solar radiation heat. The electrical connections of the converter have been designed specifically for easy mounting in a dedicated installation bay. The HV input terminals, the 3 x 400 VAC outputs, and the control and CAN data terminals are multi-pin connectors. The 24 VDC output is provided from screw terminals. The converter features an integrated battery current sensor.


The ENI-PT600/40/24/AC/EL converter transforms the tram contact system HV into:

  • 24 VDC separated and stabilised output for auxiliary and battery charging/floating lines,
  • 3 x 400 VAC separated and stabilised three-phase voltage output for other auxiliary systems, for instance, for onboard air conditioning.

The integrated autostart system starts the converter even if the battery bank is drained.


schemat blokowy przetwornica ENI-PT600/24/AC/EL

Power kW
Input voltage
600 VDC
Output voltage
24 VDC , 3 x 400 VAC

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