PRESENTED BY:
SULTANTO HERMAWAN PUTRA
ELECTRICAL
CALCULATIONS
PART OF: ELECTRICAL
ENGINEERING IN OIL & GAS:
DESIGN, CALCULATIONS, AND
MATERIAL PLANNING
SULTANTO HERMAWAN
PUTRA
EDUCATION
Bachelor of Electrical Engineering, Sepuluh Nopember Institute of Technology (2015-2020)
Master of Technology Management, Sepuluh Nopember Institute of Technology (2023-Now)
WORK EXPERIENCE
1 years at PT. Forisa Nusapersada as a Management Trainee
2 years at PT. Meindo Elang Indah as a Electrical Engineer
2 years at PT. Tri Panji Puring as a Electrical Engineer
Currently at PT. Tripatra Engineering as a Electrical Engineer
SULTANTO HERMAWAN
PUTRA
PROJECT EXPERIENCE
EPCI of South Sembakung Gas Development - JOB Pertamina - Medco E&P Simenggaris
EPCI of Wellhead Platforms and Pipeline for Forel-Bronang Project - Medco E&P Natuna
EPCI of Wellhead Platforms and Pipeline for West Belut Project - Medco E&P Natuna
FEED of Peciko 8C LLP Compressor Project - Pertamina Hulu Mahakam
FEED of OPL MRA - Pertamina Hulu Energi ONWJ
FEED of PRP ESA-EPRO - Pertamina Hulu Energi ONWJ
FEED of UWJ-B1C - Pertamina Hulu Energi ONWJ
FEED of ZULU INFILL Phase 3 - Pertamina Hulu Energi ONWJ
REVAMP AMONIA PLANT 2 - Pupuk Kaltim
SOFTWARE CONTACT
ETAP
Digsilent Sultanto Hermawan Putra
Dialux
PVsyst sultantohp
OUTLINE
Load List Calculations
Cable Sizing & Voltage Drop
Calculations
Earthing Calculations
LOAD LIST
CALCULATION
PURPOSE
Untuk menentukan beban yang termasuk ke dalam beban continuous, intermittent dan
standby
Untuk mengetahui total kebutuhan beban
Sebagai dasar untuk memilih rating dari peralatan (busbar, generator, transformer, etc.)
INPUT DATA
ELECTRICAL Lighting Transformer
Lighting Calculation
LOAD Lighting
NON ELECTRICAL Electrical Motor -> Mechanical
LOAD Instrument Load
DEFINITIONS AND FORMULAS
DEFINITIONS AND FORMULAS
DEFINITIONS AND FORMULAS
DEFINITIONS AND FORMULAS
DEFINITIONS AND FORMULAS
LOAD LIST
CALCULATION
(SIMULATION)
ELECTRICAL OVERVIEW
Sumber pembangkitan berasal dari 2 Gas Turbine Generator (Size: Tentukan), dengan 1
sebagai main power supply dan 1 sebagai backup power supply
2 Gas Turbine Generator dihubungkan ke 6.6 kV MV Switchgear yang dilengkapi dengan
sistem ATS
Terdapat 2 beban motor MV yang dihubungkan ke 6.6 kV MV Switchgear
Terdapat 1 Transformer (Size: Tentukan) untuk menurunkan tegangan dari 6.6 kV ke 0.4 kV
menuju 400V LV Switchgear
Dibutuhkan 1 Diesel Engine Generator (DEG) (Size: Tentukan) yang dihubungkan pada 400 LV
Switchgear
400 LV Switchgear digunakan untuk mensupply beban-beban LV seperti motor, lighting
system, HVAC system, control panel dan UPS load
Beban dibedakan menjadi continuous, intermittent dan standby
Beban dibedakan menjadi normal load dan critical load, beban critical adalah beban yang
tidak boleh mati ketika kondisi normal dan emergency
BEBAN MV Keterangan:
Type ; F (Feeder); M (Motor)
Duty : C (Continuous), I (Intermittent), S (Standby)
Load : N (Normal), C (Critical)
Load Phas Voltag Power Power Efficie
No Equipment Duty Type Load
Factor e e (kW) Factor ncy
1 Compressor C M N 0.95 3 6600 V 500 0.85 0.95
2 Crane I M N 0.80 3 6600 V 350 0.85 0.93
BEBAN LV Keterangan:
Type ; F (Feeder); M (Motor)
Duty : C (Continuous), I (Intermittent), S (Standby)
Load : N (Normal), C (Critical)
Load Phas Voltag Power Power Efficie
No Equipment Duty Type Load
Factor e e (kW) Factor ncy
1 Lighting System C F C 0.95 3 400 V 200 0.85 0.90
2 HVAC System C F N 0.80 3 400 V 150 0.85 0.90
3 Control Panel C F C 0.90 3 400 V 100 0.85 0.90
4 Fire Water Pump S M C 0.88 3 400 V 80 0.85 0.90
5 Water Pump I M N 0.90 3 400 V 55 0.85 0.90
6 Oil Mist Pump C M N 0.92 3 400 V 75 0.85 0.90
7 UPS C F C 0.88 3 400 V 40 0.85 0.90
LET'S
TAKE A
BREAK
CABLE SIZING
& VOLTAGE
DROP
CALCULATION
PURPOSE
Untuk menentukan rating kabel (size, jumlah tarikan, etc.)
Untuk mengetahui voltage drop pada saluran
INPUT DATA
Load List Calculation
Cable Data
Cable Condition (installation, temperature, soil resistivity, etc.)
Layout/Plot Plan
Allowable Cable Voltage Drop (from Specification)
DESIGN REQUIREMENT
DERATING FACTOR
DESIGN REQUIREMENT
DERATING FACTOR
Depend on project specification, usually 1.1-1.2 times
DESIGN REQUIREMENT
DERATING FACTOR
DESIGN REQUIREMENT
DERATING FACTOR
DESIGN REQUIREMENT
DERATING FACTOR
DESIGN REQUIREMENT
CONTINUOUS CURRENT CARRING CAPACITY
Generator Motor/Feeder Transformer
DESIGN REQUIREMENT
VOLTAGE DROP CALCULATION
DESIGN REQUIREMENT
VOLTAGE DROP CALCULATION
DESIGN REQUIREMENT
VOLTAGE DROP CALCULATION
CABLE SIZING
& VOLTAGE
DROP
CALCULATION
(SIMULATION)
CABLE INSTALLATION
Margin untuk future = 110%
Fireproofing material = No
Seluruh kabel diinstal di Ladder/Tray
Kabel konstruksi = Cu/XLPE/GSFA/PVC
Ambient temperature = 40 Celcius
Jumlah kabel per tray/ladder = 4
Jumlah maksimal tray = 2 tingkat
Fa = 0.9
Ff = 1
Ft = 0.91
Fth = 1
Fg = 0.78
F = 0.63
VOLTAGE DROP CRITERIA
THANK
YOU
