SEPTA Regional Rail Essays

  • Mathematical and Simulink Analysis of Relay Coordination

    1338 Words  | 3 Pages

    • Operational restrictions at light load may assist the coordination calculations e.g. most large HV motors would not be running, hence their starting performances need not be considered, when switchboard feeder circuit breakers are being examined. • When all the overcurrent curves are plotted for the main generators, transformer feeders, large motors and downstream feeders, they tend to be located ‘close together’, and without much room for adjustment. 1. Radial System • The specific protective

  • Disability And The Urban Environment Summary

    1318 Words  | 3 Pages

    In the scholarly article “Disability and the Urban Environment: A Perspective on Los Angeles,” Harlan Hahn (1986) discusses concepts and views on the nature of disability in society. Hahn explicitly refers to the proposition that the dictionary definition of disability has evolved over the years from one used by medical and healthcare professionals, who stressed functional impairments, to one that focuses on the interaction of the individual with the so called environment. Through analysis and evaluation