1. Electrical power supply
Although various propulsion systems are, in principle, possible (diesel, gas), electric traction, powered by an external supply, remains the universal mode of urban tramways because of its technical and ecological advantages:
low operating noise ;
total absence of air pollution and greenhouse gas emissions;
unrivalled acceleration performance ;
regenerative braking ;
low maintenance ;
longevity of equipment and vehicles, etc.
1.1 Substations
In tramway networks, the contact line supply voltage has been increased from 600 V to 750 V...
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Electrical power supply
Rolling stock design
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