RAILWAY TECHNOLOGY – Nederlandse Spoorwegen (Netherlands Railways – NS) runs trains over 2000km of electrified railway, and conversion of the overhead from 1500kV dc to 25kV ac is planned to massively improve the quality of service. The changes are needed due to acute, and worsening, capacity problems. Since the 1980s, the drive to increase the number of passenger trains has overloaded the power supply.
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