intreXis AG has an extensive experience in the design of DC-DC converters according to the EN 50155 and has already developed many power supplies for railway applications. The intreXis DC-DC Converters are fully compliant to the latest version of the standard EN 50155:2017. DC-DC converter for use "on rolling stock" differ in essential points from standard equipment.
For the DC-DC converter, usually the so-called "Operating temperature class" is relevant. The standard defines the classes OT1 (-25 .. +55°C), OT2 (-40 .. +55°C), OT3 (-25 .. +70°C), OT4 (-40 .. +70°C), OT5 (-25 .. +85°C) and OT6 (-40 .. +85°C).
In addition defines the standard new the "Switch-on extended operating temperature" classes ST0, ST1 and ST2.
intreXis DC-DC converters meet the most demanding class OT6 respectively OT4 + ST1&ST2. This means the full output power is available throughout the widest and extended temperature range class from -50°C to 85°C, without derating and without fan.
According to the standard the system voltage can vary in the range 0.6 UN and 1.4 UN, This results in the following voltage ranges:
The ultra-wide input voltage of the range of the intreXis Boardnet Converter Platform allows the use of the intreXis DC-DC Converters in railway applications with all nominal input voltages (24 V, 36 V, 48 V, 72 V, 110 V) without changing the configuration.
Due to a short circuit on a DC supply distribution line the input voltage may reduce to 0 V for a short period. There are three classes of interruption:
The devices must be shock and vibration resistant. The EN50155 refers to the relevant standard EN 61373.
For the electromagnetic compatibility is a test according to the standard EN 50121-3-2 required. The most important criteria are:
Convince yourself about the advantages of the ex stock available intreXis DC-DC Converters for Railway Applications!
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