A thorough analysis of basic electrical-systems considerations is presented. Guidance is provided in design, construction, and continuity of an overall system to achieve safety of life and preservation of property; reliability; simplicity of operation; voltage regulation in the utilization of equipment within the tolerance limits under all load conditions; care and maintenance; and flexibility to permit development and expansion. Recommendations are made regarding system planning; voltage considerations; surge voltage protection; system protective devices; fault calculations; grounding; power switching, transformation, and motor-control apparatus; instruments and meters; cable systems; busways; electrical energy conservation; and cost estimation.Std 141-1993 CHAPTER 5 220.127.116.11 Low-voltage circuit breakers The time-current characteristics for typical low-voltage power circuit breakers with solid- state trip devices are represented by bands of curves shown in figure 5-26. The maximum anbsp;...
|Title||:||IEEE recommended practice for electric power distribution for industrial plants|
|Author||:||IEEE Industry Applications Society. Power Systems Engineering Committee|
|Publisher||:||Inst of Elect & Electronic - 1994|