Zoning And Dynamic Bus Replica; North Bus Zone - GE B90 Instruction Manual
Low impedance bus differential
system
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- Instruction manual (510 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (440 pages)
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CHAPTER 8: APPLICATION OF SETTINGS
ZONING AND DYNAMIC BUS REPLICA
Figure 8-2: Approximate CT magnetizing characteristics
8.2 Zoning and dynamic bus replica
8.2.1 North bus zone
With reference to the following diagram, the North bus differential zone is bounded by the following CTs: CT-1, CT-2 (if S-1
closed), CT-3 (if S-3 closed), CT-4 (if S-5 closed), CT-5 and CT-8. The North bus protection is to operate the following
breakers: B-1, B-2 (if S-1 closed), B-3 (if S-3 closed), B-4 (if S-5 closed), B-5 and B-7.
8
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
8-3
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