Industrial Plant Design/System Planning/Determination of Loads
Determination of Loads
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General
Determination of the load is the Electrical Engineer's first problem and may be difficult to solve. The size and number of primary and secondary substations, the size, number, and arrangement of primary feeders, and the type of secondary distribution are largely
dependent on the amount and nature of the load and its distribution.
The plant distribution system usually must be designed before all loads are known. This is at a time when the equipment layout itself is only in the formative stage. Equipment may be bought piecemeal during which time changes in machines are taking place either in number or size. Ideas are changed by the impact of what is commercially available, or by manufacturers’ recommendations for improved models, better ways of securing a given result, or by competitive conditions. Processes themselves are being changed as available equipment is fitted into the prospective production schedule.
