GMR dan GMD

1. GMR dan GMD
SALURAN TRANSMISI
MACAM PENGHANTAR
R
A
R
R

2. GMR DAN GMD
• GMD = GEOMETRIC MEAN DISTANCE (Jarak
Rata – rata Geometris)
• GMR = GEOMETRIC MEAN RADIUS (Radius
Rata –rata Geometris

3. Pengahantar Tunggal
• GMD = 2 h
• GMR = r
h
h
120 mm2
A pr2
r 6.181954mm
0.006182m

4. Sistem 3 phasa
• GMD = (RS x RT x ST )^(1/3)
• GMR = r
• r' = r * e ^-1/4 ; e = 2,718
• GMR C = GMR = r
• GMRL = r’
R S T
R
S
T
R
S
T

5. Cari GMR dan GMD

10. Penghantar Bendel 2
GMR bendel 2 = ( daa daa' da'a da'a') ^1/4
= (r s s r)^1/4
'= (r2 s2 )^1/4
'= sqrt (r s)
r ' = r e-1/4
GMR bendel 2 (r.s)
GMRL bendel 2 (r'.s)
GMRC bendel 2 (r.s)
GMD = (RS x RT x ST )^(1/3)
GMRL
= (r'.s)
GMR C
= (r.s)
a a’
s

11. Bendel 3
r ' = r e-1/4
GMR bendel 3
(r.s^2)1/3
GMRL bendel 3
(r'.s^2)1/3
GMRC bendel 3
(r.s^2)1/3
GMD = (RS x RT x ST )^(1/3)

12. Bendel 4
GMR bendel 4 = [( r s s (√2 s)]^ (1/4)
=
[( √2 )]^ (1/4) = 1,090508
= 1,090508 (r s3)^(1/4)
1,090508
4
𝑟𝑠3

13. Silakan di coba menghitung GMR dan
GMD dengan penampang 120 mm2
17
6,7
7,4
7,8
7,4 – 6,7
8,5
7,8 – 7,4
6,7
7,8 – 6,7
17
A
C
B
A
C

14. Silakan di coba menghitung GMR dan
GMD dengan penampang 120 mm2
Tugas

16. Tugas

17. Silakan dikerjanan GMR
dan GMD untuk
penampang nim terakhit :
0. 25 mm2.
1. 35 mm2,
2. 50 mm2
3. 60 mm2,
4. 70 mm2,
5. 95 mm2,
6. 120 mm2,
7. 150 mm2,
8. 240 mm2,
9. 300 mm2
Tugas

18. • Silakan dikerjanan
GMR dan GMD untuk
penampang nim
terakhit :
0. 25 mm2.
1. 35 mm2,
2. 50 mm2
3. 60 mm2,
4. 70 mm2,
5. 95 mm2,
6. 120 mm2,
7. 150 mm2,
8. 240 mm2,
9. 300 mm2
Tugas