Since 1999, the multiple inputvoltage APS (Auxiliary Power Supply) MEE-NT is used by different European operators. For the first time, SMA realized an electric separation in the input stage by a soft switching input converter that can be operated at all UIC input voltages without electromechanical regrouping. More than 250 railway coaches have meanwhile been equipped with multiple input voltage MEE-NTs and prove their reliability in daily use on European railroads.

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Computer Technology for Mobile Applications

SMA computer systems are used in the Metro that went into service in Bangkok last summer, in new Chinese passenger trains and in the German maglev train Transrapid. The company developed a special know-how for using computers in mobile applications within the last years. This experience can be found in the Enduro Mobile PLC and WINtrak fieldbus terminal blocks.

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