النظام العالمي للخطوط
 

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[LEFT]General Line Protecti**
1
1. Distance relays - basics
2. Operating characteristics
3. Effect of parallel line
4. Phase selecti**
5. Power swing blocking
6. Communicati** scheme
7. Switch ** to fault
8. Weak end infeed
9. Supervisi** fuse failure
10. System supervisi**.
11. Fault locator
12. Stub protecti**
13. Earth fault protecti**
14. Auto reclosing systems[/LEFT]