GE B90 UR Series, Инструкция по эксплуатации

Страница: 305 / 478

GE Multilin B90 Low Impedance Bus Differential System 10-3
10 APPLICATION OF SETTINGS 10.2 ZONING AND DYNAMIC BUS REPLICA
10
10.2ZONING AND DYNAMIC BUS REPLICA 10.2.1 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 should 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.
Figure 10–3: NORTH BUS ZONE
10.2.2 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 should 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 10–4: SOUTH BUS ZONE
836733A1.CDR
NORTH BUS
SOUTH BUS
CT-7
CT-8
B-7
B-5
B-6
CT-5
CT-6
S-5
S-6
B-4 CT-4
S-3
S-4
B-3 CT-3
S-1
S-2
B-2 CT-2
CT-1
B-1
C-1 C-2 C-4
C-3 C-5
836734A1.CDR
NORTH BUS
SOUTH BUS
CT-7
CT-8
B-7
B-5
B-6
CT-5
CT-6
S-5
S-6
B-4 CT-4
S-3
S-4
B-3 CT-3
S-1
S-2
B-2 CT-2
CT-1
B-1
C-1 C-2 C-4
C-3 C-5