Discussion
A metering current transformer of instrument security factor 5 is rated 100/5. On a fault of 4000 A the secondary current will be at most about
Answer: A
The security factor limits the secondary to five times its rated value, so 25 A, because the core saturates well before the fault current is reached. Without that saturation the instruments would see two hundred amperes and be destroyed.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development