Reconsider problem 4.28 with still another alternate phase placement given below. Physical Position 1 Phase Placement 1' 2' 3' C A B A C find the inductance reactance of the line in ?/mi/phase.

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Reconsider problern 4.28 with still another alternate phase placement given below.
Physical Position
1
1'
2'
3'
Phase Placement
C
A
find the inductance reactance of the line in ?/mi/phase.
Reference of problern 4.28
For the case of double-circuit, bundle-conductor lines, the sarme method indicated in Problem 4.27 applies with r'replaced
by the bundle's GMR inthe calculation of the overall GMR. Now consider a double-circuit configuration shown in Figure
4.36 that belongs to a 500-kv, three-phase line with bundle conductors of three subconductors at 21 in. spacing. The GMR
of each subconductor is givento be 0.0485 ft. Determine the inductive reactance of the line in ohms per mile per phase.
You may use
GMD
X 0.2794 log
0/mi/phase
GMR
FIGURE 4.36
32
Configuration for
Problem 4.28
1, A
3, C'
36"
2, B
3, C
1; A'
2, B'
-32-
-32
Reference of problem 4.27
Transcribed Image Text:Reconsider problern 4.28 with still another alternate phase placement given below. Physical Position 1 1' 2' 3' Phase Placement C A find the inductance reactance of the line in ?/mi/phase. Reference of problern 4.28 For the case of double-circuit, bundle-conductor lines, the sarme method indicated in Problem 4.27 applies with r'replaced by the bundle's GMR inthe calculation of the overall GMR. Now consider a double-circuit configuration shown in Figure 4.36 that belongs to a 500-kv, three-phase line with bundle conductors of three subconductors at 21 in. spacing. The GMR of each subconductor is givento be 0.0485 ft. Determine the inductive reactance of the line in ohms per mile per phase. You may use GMD X 0.2794 log 0/mi/phase GMR FIGURE 4.36 32 Configuration for Problem 4.28 1, A 3, C' 36" 2, B 3, C 1; A' 2, B' -32- -32 Reference of problem 4.27
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