The pressure coil of a directional relay has an impedance of (100 j274.74) ohms. What is the MTA for this relay? What change will have to be made to the pressure circuit so as to change this angle to (a) 30° and (b) 15°

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter10: System Protection
Section: Chapter Questions
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The pressure coil of a directional relay has an impedance of (100 j274.74)
ohms. What is the MTA for this relay? What change will have to be made to
the pressure circuit so as to change this angle to (a) 30° and (b) 15°
Transcribed Image Text:(0) P The pressure coil of a directional relay has an impedance of (100 j274.74) ohms. What is the MTA for this relay? What change will have to be made to the pressure circuit so as to change this angle to (a) 30° and (b) 15°
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