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P946 - Recommended Practice for the Design of DC Power Systems for Stationary Applications

This recommended practice provides guidance for the design of stationary dc power systems. The components of the stationary dc power system addressed by this recommended practice include: Storage batteries Static battery chargers/rectifiers (including sizing) Distribution equipment Protection equipment Control equipment Interconnections Instrumentation Guidance for selecting the quantity, types and ratings of equipment is also provided. The considerations of each of these different components and the issue of load voltage and other load specifics are discussed in terms of their effect on the design of the whole system. Guidance on short circuit calculation and contribution of different DC system components are also offered to improve reliability, performance and safety of the installation.
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