- Discrimination Protective discrimination is when the protection systems of a distribution system act to disconnect only the faulty component and leave the rest of the system operational.
- This is achieved by arranging the current settings and the time ratings of the various protective devices.
- The protective devices nearest the load will need a lower current rating and a faster operating time than the protective devices at the generator.
Protection devices
1. Fuses.2. Circuit breakers.
3. Contactors.
4. Overcurrent relays.
5. Under voltage relays.
6. Reverse power relays.