Table of Contents
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13. SCHEMATICS DOUBLE BUSBAR
DOUBLE BUSBAR ARRANGEMENT
1. Bus coupler EB – Three line current diagram
2. Position 1 – Three line current diagram
3. Position 2 – Three line current diagram
4. Position 3 – Three line current diagram
5. Position 4 – Three line current diagram
6. Position 5 – Three line current diagram
7. Position 6 – Three line current diagram
8. Position 7 – Three line current diagram
9. Position 8 – Three line current diagram
10. Current circuit to "A" differential unit, current input EB, P1.
11. Current circuit to "A" differential unit, current input P2, P3, P4.
12. Current circuit to "A" differential unit, current input P5, P6, P7, P8.
13. Current circuit to "B" differential unit, current input EB, P1.
14. Current circuit to "B" differential unit, current input P2, P3, P4.
15. Current circuit to "B" differential unit, current input P5, P6, P7, P8.
16. Test unit zones A & B
17. Position auxiliary latching relays, positions P1, P2, P3, P4
18. Position auxiliary latching relays, positions P5, P6, P7, P8
19. Bus coupler reduction to single differential unit.
20. First stage breaker failure initiation, positions EB, P1, P2, P3
21. First stage breaker failure initiation, positions P4, P5, P6, P7
22. First stage breaker failure initiation, position P8.
23. First stage breaker failure tripping contact outputs EB, P1, P2, P3, P4
24. First stage breaker failure tripping contact outputs P5, P6, P7, P8
25. Second stage breaker failure tripping & signalling
26. Differential units and breaker failure tripping contact outputs. Tripping relays output. Position EB, P1, P2,
P3, P4.
27. Tripping relays output. Position P5, P6, P7, and P8.
28. Differential units A, B, tripping auxiliary relays.
29. A differential unit connection, disconnection, and test.
30. B differential unit connection, disconnection, and test.
31. Power supply auxiliary circuits.
42. Breaker Failure Second Stage and Tripping contact outputs P1, P2, P3, P4, P5, P6, P7, P8
43. Signalling contact outputs
44. Cabinets interconnections
45. Location and distribution of terminal blocks. Cabinet 1
46. Location and distribution of terminal blocks. Cabinet 2
47. Location and distribution of terminal blocks. Cabinet 3
48. Legend
13-2
BUS1000 Busbar Protection
GEK-98514B
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