Protection main function:
1-safeguard the entire system to maintain continuity of supply.
2-minimize damage and repair costs
3-ensure safety of personnel
Protection-basic requirements:
1-Selectivity
2-Stability
3-Speed
4-Sensitivity
Protection basic components:
1-Voltage transformer and Current transformer
2-Fuses
3-Relays
4-Circuit breakers
5-DC batteries
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