Cng-000-El-011 Voltage Drop Calculation (Ms) r1

Document No. : CNG‐000‐EL‐011

PT. MARKINAH

SPBG CNG untuk Angkutan Umum di Palembang

Engineering Design & Preparation Works

B.5. ELECTRICAL ENGINEERING

B.5.2. CALCULATION

B.5.203. Cable Size & Voltage Drop Calculation (Mother Station)

1 26‐10‐11 Issued For Review MAM ADT

0 13‐10‐11 Issued For Review MAM ADT

Rev. Date Description By Checked Appr.

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CABLE SIZE & VOLTAGE DROP CALCULATION (MOTHER STATION)

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ENGINEERING DISCIPLINE:

ELECTRICAL DATE:

26 October 2011 DOC. NUMBER:

CNG‐OOO‐EL‐011

PROJECT::

DEDC PROYEK PEMBANGUNAN SPBG CNG ANGKUTAN UMUM DI PALEMBANG

1. OBJECTIVE

This document is intended to define the cable sizing and to calculate the voltage drop of electrical equipment for Online Mother Station SPBG (Stasiun Pengisian Bahan bakar Gas) Compressed Natural Gas (CNG) untuk Angkutan Umum di Palembang.

1. TUJUAN

Dokumen ini dimaksudkan untuk menentukan ukurang kabel dan menghitung susut tegangan setiap perlengkapan listrik pada Stasiun induk online SPBG (Stasiun Pengisian Bahan bakar Gas) Compressed Natural Gas (CNG) untuk Angkutan Umum di Palembang.

2. REFERENCE DOCUMENTS

The following Codes and Standard will be applied for cable sizing and voltage drop calculation:

1. IEC (International Electrotechnic Commission) standard No. 60364‐5‐2001

2. Persyaratan Umum Instalasi Listrik (PUIL) 2000

2. KLASIFIKASI AREA

Kode dan standar di bawah ini akan diberlakukan dan perhitungan ukuran kabel dan susut tegangan:

1. IEC (International Electrotechnic Commission) standard No. 60364‐5‐2001

2. Persyaratan Umum Instalasi Listrik (PUIL) 2000

3. VOLTAGE SYSTEM

Electrical voltage system shall be based on the document no. CNG‐000‐EL‐001 ELECTRICAL DESIGN PHYLOSOPHY that the three (3) phase system shall be 380V ±5%, and the single phase system shall be 220V ±5%.

3. SISTEM TEGANGAN

System tegangan listrik harus diadasarkan pada dokumen no. CNG‐000‐EL‐001 ELECTRICAL DESIGN PHYLOSOPHY bahwa tegangan tiga (3) fasa adalah 380V ±5%, dan satu fasa adalah 220V ±5%.

4. CABLE VOLTAGE DROP CRITERIA

The total voltage drop in AC or DC feeder shall be not exceed 5% of their nominal voltage bus.

The voltage drop calculation for equipment shall be based on the rated nominal voltage of the distribution bus feeding the equipment,

4. KRITERIA TEGANGAN JATUH KABEL

Total tegangan jatuh pada beban AC atau DC harus tidak melebihi 5% dari tegangan pengenalnya.

Perhitungan tegangan jatuh untuk peralatan harus didasarkan pada niai tegangan nominal dari bus yang menyuplai peralatan, arus beban

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full load current of the equipment being fed at its rated voltage and maximum feeder cable impedance.

penuh peralatan, dan impedansi maksimal kabel suplai.

5. CABLE AMPACITY

Cable ampacity is referred to PUIL 2000, that conductor for equipment motor shall have ampacity not less than 125% of full load current. If the cable will supplied 2 or more motor circuit in a group, cable shall have ampacity not less than total full load current of motor plus 25% of the biggest full load current in the group.

5. KEMAMPUAN HANTAR ARUS KABEL

Kemampuan hantar arus untuk kabel didasarkan pada PUIL 2000, bahwa penghantar untuk peralatan motor harus memiliki kemmpuan hantar tidak kurang dari 125% arus beban penuh. Jika kabel menyuplai 2 motor atau lebih dalam satu grup, kabel harus mempunyai kemampuan hantar arus tidak kurang dari arus beban penuh total motor ditambah 25% dari arus beban penuh dari motor terbesar dalam grop tersebut.

6. METHOD OF CALCULATION

Calculation of voltage drop will be based on the below formula:

a. Three phase system:

( )xLXRxIVd ϕϕ sincos3 +=

b. Single phase system


Where:

V : voltage drop in cable

I : full load ampere (FLA) of the equipment

R : resistant for one conductor in ohms

X : reactance for one conductor in ohms

φ : angle of load power factor

6. METODE PERHITUNGAN

Perhitungan susut tegangan akan mengacu pada rumus berikut:

a. Sistem tiga fasa


b. System fasa tunggal


Dimana:

V : susut tegangan dalam kabel

I : arus beban penuh peralatan

R : tahanan kabel dalam ohm

X : rekatansi kabel dalam ohm

φ : sudut factor daya beban

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L : Length of cable (meter)

The phasor of voltage drop calculation is as follow:

L : panjang kabel (meter)

Fasor perhitungan susut tegangan seperti gambar di bawah ini:

7. CALCULATION SUMMARY

Calculation summary can be seen on the below table (see next page)

7. HASIL PERHITUNGAN

Hasil perhitungan dapat dilihat dalam table berikut (lihat halaman berikutnya)

Load/Motor voltage

Voltage drop

Bus/panel voltage

φ I RI X

I Z

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C‐P‐Q‐01 400.00 3 380 607.7371 911.61000 AT / 1000 AF

759.7 10 NYFGbY 2x4x 300 0.0601 0.04808 0.76 0.20

C‐P‐Q‐02 400.00 3 380 607.7371 911.6800 AT / 800 AF

759.7 10 NYFGbY 2x4x 240 0.0754 0.06032 0.95 0.25

C‐P‐Q‐03 200.00 3 380 304 455.80630 AT / 630 AF

379.8 15 NYFGbY 4x 240 0.0754 0.06032 0.71 0.19

C‐P‐Q‐04 93.75 3 380 142 213.66200 AT / 250 AF

178.0 15 NYFGbY 4x 95 0.193 0.1544 0.86 0.23

C‐P‐Q‐05 13.75 3 380 21 31.3440 AT / 100 AF

26.1 15 NYFGbY 4x 6 3.03 2.424 1.97 0.52

C‐P‐Q‐06 28.59 3 380 43 65.1563 AT / 100 AF

54.3 20 NYFGbY 4x 16 1.15 0.92 2.08 0.55

C‐P‐Q‐07 4.69 3 380 7 10.6825 AT / 100 AF

8.9 20 NYFGbY 4x 4 4.56 3.648 1.35 0.36

GROUP: DISCIPLINE: PROJECT:ENGINEERING

DATE DOC. NUMBER

26 OCTOBER 2011

CONDUCTOR RATING

ELECTRICAL

CNG‐000‐EL‐011DEDC PROYEK PEMBANGUNAN SPBG CNG ANGKUTAN UMUM DI PALEMBANG

AIR COOLER

GAS DRYER

AIR COMPRESSOR

MAIN CABLE FROM GENSET‐1 (400 kVA)

MAIN CABLE FROM GENSET‐2 (400 kVA)

MAIN MOTOR COMPRESSOR

PRE COMPRESSOR MOTOR

LVMDP ( LOW VOLTAGE MAIN DISTRIBUTION PANEL )

PT MARKINAHCALCULATION

CABLE SIZE AND VOLTAGE DROP CALCULATION OF MOTHER STATION

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CABLE No.

SELECTED AMPERE

STARTING CURRENT

VOLTAGEPHASETOTAL kVAEQUIPMENTNOMINAL CURRENT

VD VD%LENGTH DIMENSION RESISTANCE IMPEDANCE

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C‐P‐Q‐11 11.68 3 380 18 26.6132 AT / 100 AF

22.2 5 NYY 4x 6 3.03 2.424 0.56 0.15

C‐P‐Q‐12 0.68 1 220 3 4.60 10 A 3.8 15 NYM 3x 2.5 7.28 5.824 0.80 0.37

C‐P‐Q‐13 1.25 1 220 6 8.52 10 A 7.1 20 NYM 3x 2.5 7.28 5.824 1.99 0.90

C‐P‐Q‐14 0.63 1 220 3 4.26 10 A 3.6 35 NYFGbY 3x 4 4.56 3.648 1.09 0.49

C‐P‐Q‐15 0.94 1 220 4 6.39 10 A 5.3 54 NYFGbY 3x 4 4.56 3.648 2.52 1.14C‐P‐Q‐16 1.00 1 220 5 6.82 10 A 5.7 20 NYM 3x 2.5 7.28 5.824 1.59 0.72C‐P‐Q‐17 1.00 1 220 5 6.82 10 A 5.7 20 NYM 3x 2.5 7.28 5.824 1.59 0.72C‐P‐Q‐18 1.19 1 220 5 8.10 10 A 6.7 10 NYM 3x 2.5 7.28 5.824 0.94 0.43C‐P‐Q‐19 3.00 1 220 14 20.45 20 A 17.0 10 NYM 3x 2.5 7.28 5.824 2.38 1.08C‐P‐Q‐20 2.00 1 220 9 13.64 16 A 11.4 5 NYM 3x 2.5 7.28 5.824 0.79 0.36

NOTE:VD: VOLTAGE DROP IN VOLTVD%: VOLTAGE DROP IN %

GROUP: DISCIPLINE: PROJECT:ENGINEERING

DATE DOC. NUMBER

26 OCTOBER 2011

ELECTRICALDEDC PROYEK PEMBANGUNAN SPBG CNG ANGKUTAN UMUM DI PALEMBANG

CNG‐000‐EL‐011

TOTAL kVA PHASE VOLTAGENOMINAL CURRENT

STARTING CURRENT

SELECTED AMPERE

VD

LIGHTING PANEL

CABLE No.

EQUIPMENT

PT MARKINAHCALCULATION

MAIN BREAKER

LIGHTING SHELTER

CABLE SIZE AND VOLTAGE DROP CALCULATION OF MOTHER STATION

DIMENSION RESISTANCE

UPS 2 KVA

LIGHTING OFFICE AND FILLING STATION

OUTDOOR LIGHTING (HAZARDOUS AREA)OUTDOOR / STREET LIGHTINGRECEPTACLERECEPTACLEAC SPLIT (PANEL ROOM)AC SPLIT (OFFICE ROOM)

IMPEDANCECONDUCTOR

RATINGLENGTH

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VD%

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Cng-000-El-011 Voltage Drop Calculation (Ms) r1