How do protection relays work?

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Tags

1. #often
2. #public
3. #quickly
4. #breaker
5. #engineering
6. #detected
7. #device
8. #relays
9. #second
10. #general
11. #protect
12. #protective
13. #within
14. #designed
15. #equipment
16. #respond
17. #requires
18. #relay
19. #circuits
20. #circuit
21. #thousandths
22. #electrical
23. #fault