1. SINGLE LINE DIAGRAM

2. Circuit configurations for high-voltage switchgear installations
Single busbars
Main and Transfer bus
Double busbars
Composite Double bus/bypass bus
One and a half breaker method
Ring busbars
Two-breaker method

3. Single Busbars

4. Main and Transfer Bus Arrangement

5. Double Busbars

6. Composite Double Bus/Bypass Bus

7. One And a Half Breaker Method

8. One And a Half Breaker Method (Inverted)

9. Ring Busbars

10. Two-Breaker Method

11. Comparison of Configuration
REFERENCE: Electrical Engineering Handbook, Taylor & Francis Group

12. Feeder Designation 400 KV =C 230 KV =D 132 KV =E 63(66) KV =F 33 KV =H=J

13. Equipments Designation

14. Single Busbar (H-Type) S/S