Static converters BFI 50T-TRW

The device can be powered by a voltage from the 3×400 V platform network. It allows for both the operation of a 24 V buffer charger and receivers powered by 3×400 voltage installed on the carriage. Subsequent power sources can be voltages from the overhead contact line 1,000 V/16.7 Hz; 1,000 V/50 Hz; 1,500 V/50 Hz; 1,500 VDC; 3,000 VDC. The following circuits operate during connection to the overhead contact line: NPC DC/DC converter that reduced input voltage to 700 VDC, auto-start system, contactors system that allows to disconnect the overhead contact line power supply, inverter system and 24 V buffer power supply used to charge main batteries and supply on-board devices.

Thanks to the applied IGBT converter topology, the device features high stability of output voltages and currents, very low output current and voltage ripple, compact dimensions and weight, quiet operation, and high efficiency.

The APS-50 WN TRW MODULE includes, among others: earthing switch, main fuse as a converter protection, soft start system (resistor + contactor), main input contactor, self-start system from the network, and NPC DC/DC converter lowering the input voltage.

The APS-50 NN MODULE includes, among others:

• Inverter system (max. 75 kVA):

– 3×400 VAC – 45 kVA;
– 3×400 VAC – 8 kVA;
– 230 V/50 Hz – max. 10 kVA (option);

• 24 VDC 250 A battery charger with charging current limitation and automatic adjustment of battery charging in a temperature function;
• 24 VDC 50 A battery charger with charging current limitation and automatic adjustment of battery charging in a temperature function (option);
• two 3×400 VAC platform power supply inputs (for left-handed isle unplugged);
• event buffer, which has a parameter logger that collects information about the operating parameters of the converter, its possible damages and faults, and the parameters of the power supply network, with the possibility of reading the parameters from a socket located on the logger. The buffer is built-in in the converter. It is equipped with an output (socket) that allows to assembly inside carriages, e.g. in an electrical cabinet, with a possibility to readout contents by connecting to a computer.

The TRW APS-50 MAG MODULE includes min.: choke.