GE B90 User Manual

8-4 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
ZONING AND DYNAMIC BUS REPLICA CHAPTER 8: APPLICATION OF SETTINGS
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Figure 8-3: North bus zone
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.
Figure 8-4: South bus zone

GE B90 Specifications

General

Brand	GE
Model	B90
Category	Relays
Language	English