TUGASTEKNOLOGITRAFO&KABELNAMA:GamaTitisAnuragaNIM: 23214061

1sirkitkabelXLPEterdiridari16kabeldipasangdidalamsebuatconcreteduckyangtertanam.HitungAmpicity-nya?Adapundata-datanyasebagaiberikut:

DATAKABEL&DUCT:

A 760 mm2 LuasconcreatestrandedkonduktorRac 32.3 10

6 /m ACResistanceconductor

dc 36 mm Diameterkonduktordins 76 mm Diameterisolasidjacket 90 mm DiameterpembungkusODduct 133.3 mm DiameterluarductIDduct 130 mm DiameterdalamductTc 80

0C TemperaturmaksimumisolasiTa 25

0C TemperaturambienSIC 2.3 Konstantadielektrikisolasi(berdasarkanNeher-Mcgrath)TAN 0.001 Faktordissipasiisolasi(berdasarkanNeher-Mcgrath)

DATAINSTALASI:

BURIAL 850 mm Kedalamandaripermukaantanahkecentrekonduktordphase 250 mm Jarakantarakonduktordcircuit 250 mm Jarakantarasirkitkabelsatusamalainnyaf 50 Hz FrekuensisistemE

150000

3 V Tegangansistem

n 1 JumlahkonduktorperductN 16 Jumlahduct

RESISTIVITASTERMAL

ins 4 C0-m/w Resistivitastermalisolasinative 1.2 C0-m/w Resistivitastermaltanahjacket 7 C0-m/w Resistivitastermaljacketduct 4.8 C0-m/w Resistivitastermal ibreductbackfill 0.85 C0-m/w Resistivitastermalconcreatewcbf 250 mm Lebarconcreate

1

hcbf 3734 mm Tinggiconcreatex wcbf 250 mmy hcbf 3.734 10

3 mm

JAWAB

STEP1-HITUNGRUGI-RUGIDIELEKTRIK

DIELECTRIC LOSS

W

2 f SICE

3

2 TAN 10 9

18 lndinsdc

0.134 W/m

STEP2-HITUNGRTHERMALSEMUALAPISAN

RThermalIsolasi:

Riins2

lndinsdc

0.476

RThermalJacket:

Rjjacket

2

lndjacket

dins

0.188

RThermalduct:Rduct

duct2

ln

ODductIDduct

0.019

Faktorkoreksigeometris:

Db e

1

2

x

y

4

x

y

ln 1y2

x2

ln x( )

253.891

Lb BURIAL dphase 1.1 103

Gb ln2 Lb 4 Lb

2 Db2

Db

2.849

HitungdiameterDx:an 6.71

104

native 100 0.8 1.457 103 Thermaldiffusivityofsoil

2

Dx 1.03 an 24 192.589

RThermaltanah:L BURIAL dphase 1.1 10

3 Kabelfasatengahmemilikitahanantermistertinggi

Rearthbackfill

2 ln

DxODduct

ln2 L 4 L2 ODduct

2

Dx

0.473

RThermalkoreksi:

Rcorrectionnative backfill

2 n N Gb 2.539

MutualHeating:

F2 BURIAL dphase

dphase

2 BURIAL 3 dphase dphase

76.44

Tahananthermalmutual:Rmutual

backfill2

ln F( ) N 1( ) nnative backfill

2 Gb

2.967

STEP3-HITUNGKENAIKANTEMPERATURDIKARENAKANPEMANASANDIELEKTRIK

Td W12

Ri Rduct Rearth Rcorrection Rmutual

0.838 0C

STEP4-HITUNGAMPACITY

RacRthermal Rac Ri Rac Rduct Rac Rearth Rac Rcorrection Rac Rmutual 2.091 104

Tcond Tc Td Ta 54.1620C

IratedTcond

RacRthermal508.92 Amp

GAMBARINSTALASI:

3

1100 mm

3.734 mm

4

250 mm

5

6

7

8