For the radial distribution system shown below, the available utility short circuit duty is: 10 kA at the 12.47 kV bus, X/R = 15. The 12.47 kV / 480 V transformer is rated for 1500 kVA, %Z = 6%, X/R = 40. The short cable impedance is: 0.001+j0.0142. Size the MCCB for a) continuous current (IEEE Std. 1015-2006, Table 3-11) and b) interrupting rating (based on a 3-phase fault at the end of the short cable). (IEEE Std. 1015-2006, Table 3-25). Use a base kVA of 1500. %3D MCCB CABLE UTILITY

For the radial distribution system shown below, the available utility short circuit duty is: 10 kA at the 12.47 kV bus, X/R = 15. The 12.47 kV / 480 V transformer is rated for 1500 kVA, %Z = 6%, X/R = 40. The short cable impedance is: 0.001+j0.0142. Size the MCCB for a) continuous current (IEEE Std. 1015-2006, Table 3-11) and b) interrupting rating (based on a 3-phase fault at the end of the short cable). (IEEE Std. 1015-2006, Table 3-25). Use a base kVA of 1500. %3D MCCB CABLE UTILITY

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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