South Bus Zone - GE B90 Instruction Manual

ZONING AND DYNAMIC BUS REPLICA

8.2.2 South bus zone

The South bus differential zone is bounded by the following CTs: CT-2 (if S-2 closed), CT-3 (if S-4 closed), CT-4 (if S-6 closed),
CT-6 and CT-7. The South bus protection is to operate the following breakers: B-2 (if S-2 closed), B-3 (if S-4 closed), B-4 (if S-
6 closed), B-6 and B-7.
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8-4
Figure 8-3: North bus zone
Figure 8-4: South bus zone
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 8: APPLICATION OF SETTINGS