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7/26/2019 Presentasi Breaking Capacity UHUUI
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PRESENTASI
22 APRIL 2008
PT. JAGA CITRA INTI
JAKARTA
Oleh :
Danial Budianto
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1. Diameter Pipa CHW!R
2. Brea"in# Capa$it%
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Water Cooled Chiller
AHUEVAPORATORKONDENSERCOOLING
TOWER
POMPA
POMPA
EXPANTION
VALVE
KOMPRESOR
CHILLER
PIPA CHWS
PIPACHWR
7/26/2019 Presentasi Breaking Capacity UHUUI
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t C QW
p ∆××=
γ
W = Jumlah air sirkulasi (m3/s)
Q = Jumlah kalor yang diserap/dilepaskan
(kW)
C p = Kalor spesifik air (kJ/kg·K)
γ = Berat jenis air (kg/m3)
∆t = Perbedaan temperatur masuk keluar
pada penukar kalor (K)
Persamaan
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Persamaan (cont’d)
v = Ke!epatan air sirkulasi
(m/s) A = "uas penampang pipa (m#)$ % & d#
AvW ×=
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Contoh
Proyek Paragon City :
Cooling Capacity = #'# Btu/h
Suhu air masuk AHU = ' * + ,-
Suhu air keluar AHU = * # ,-
ecepatan air sirkulasi = m/s
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Penyelesaian
Q $ #'# Btu/h . #03$ +311 kW
Cp $ 2# kJ/kg·K
γ $ kg/m3
∆t $ ## o- 11+ o-
$ ''3 o-
$ ''3 oK
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Penyelesaian (cont’d)
()))'3/'#/21()1/+3
××
=W
W = 3+ m3/s
( )oi p t t C
QW
−××=
γ
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Penyelesaian (cont’d)
(
))3(+/)= A
A = 3+ m#
AvW ×=
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Penyelesaian (cont’d)
π
Ad 2=
233+2
×=d
d = 13' m = #' in!h
Menu
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PLN
TO SDP
TRAFO
MVMDP LVMDP
PP - POMPA
POMPA 1
POMPA 2
Sistem !lektrikal
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"reaking Capacity = #$kA
Contoh : %C" &'A #$kA
ilai arus pemutusan perkiraan yang mampu
diputuskan oleh pele*ur pada tegangan yang
ditetapkan menurut kondisi ker+a dan karak,
teristik yang telah ditentukan
"reaking Capacity
"reaking Capacity → Arus Hu*ung Singkat
7/26/2019 Presentasi Breaking Capacity UHUUI
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"reaking Capacity
Z
V I sc
×=
3
I sc $ 4rus hubung singkat (k4)
Z = 5mpedansi (mΩ)
V $ 6egangan (7)
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"reaking Capacity
## X R Z +=
R $ 8esistansi (mΩ)
X $ 8eaktansi (mΩ)
()))×
×
=
A J
L R
L $ Panjang kabel (m)
J $ Kondukti9itas (Ω*m*)
A = "uas penampang kabel (mm#)
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"reaking Capacity
PLN
TO SDP
TRAFO
MVMDP LVMDP
20 kV/400 V
800 kVA
Z = 4.5%
PP–POMPA
180 kVA
NYY 4x240mm2
50 m
NYY 12x1x240mm2
20 m
1. B!"k#$% C"&"'#() LVMDP*
2. B!"k#$% C"&"'#() PP-POMPA*
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"reaking Capacity
DATA-DATA YANG DIPERLUKAN 1.K!NDUKTIVITA" PENG#ANTAR $&
- TE'(AGA 5) Ω-1m-1
- ALU'UNIU' *2.+Ω-1
m-1
2.REAKTAN"I KA(EL $DARI TA(EL&
- NYY 1x240mm2 0.08 Ω/km
- NYY 4x240mm2 0.08 Ω/km
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"reaking Capacity
+ IMPEDANSI KABEL TR , 20 N// 121202
R!"k("$# 3 0.08L45 3 0.655 R!#("$# 3 L1000475A9 3 0.:;
+ IMPEDANSI TRAFO
< 3 .6 =
:))
2)))2'/);
##
×=
×=
P
V
0'33201 ##++= Z
3 :
+ IMPEDANSI HUBUNG SINGKAT DI LVMDP ,
$ 0+# mΩ
+ ARUS HUBUNG SINGKAT DI LVMDP ,
+#/03
2))
3 ×
=
×
=
Z
V I sc $ #3+1 k4
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"reaking Capacity
+ IMPEDANSI KABEL SDP-CHILLER , 60 N// 202
R!"k("$# 3 0.08L 3 R!#("$# 3 L100047A9 3 5.>2
0+#32'33201 ####++++= Z
+ IMPEDANSI HUBUNG SINGKAT DI SDP-CHILLER ,
$ 2' mΩ
+ ARUS HUBUNG SINGKAT DI SDP-CHILLER ,
'/(23
2))
3 ×
=
×
=
Z
V I sc $ '03 k4
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"reaking Capacity
'/(23
2))
3 ×
=
×
=
Z
V I sc $ '03 k4
+ ARUS HUBUNG SINGKAT DI LVMDP ,
+#/03
2))
3 ×
=
×
=
Z
V I sc $ #3+1 k4
+ ARUS HUBUNG SINGKAT DI SDP-CHILLER ,
+ B!"k#$% C"&"'#() #$#"? &"@" C#'#( B!"k!
@# LVMDP , 2 kA
+ B!"k#$% C"&"'#() #$#"? &"@" C#'#( B!"k!
@# SDP-CHILLER , 1; kA
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S!-A .A /!0-%AAS-H
