9. Component installation
Power and auxiliary circuit components are grouped into blocks. They are distributed in such a way as to meet the constraints of weight and dimensions, loss evacuation and maintenance. The evolution of electrical blocks has been profoundly influenced by the modular design of sub-assemblies, particularly solid-state converters. Modularity makes it possible to have a number of smaller, specialized units:
motor block per unit: bogie or axle ;
auxiliary block ;
common block including common components (DC circuit breaker, filter, etc.);
dynamic braking unit.
Here are the electrotechnical component layouts for three types of prime mover.
Self-propelled locomotive...
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Component installation
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