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Grad. Project: Electrical Distribution in Industrial Plant

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by

Bahy Aboelezz

on 1 November 2010

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Transcript of Grad. Project: Electrical Distribution in Industrial Plant

Objectives
Time plan
Practical data & Shop drawings
Under-construction buildings
Egyptian code
Documentation
Industry
Add your touch
Technology Recommendations Electrical Distribution in Industrial Plant Single-core Vs Multi-Core

Copper Vs Aluminium:
Electric conductivity - current density - c.s.a
Ductility - tensile strenght
Cost
Weight

PVC Vs XLPE
Temperature rating
Dielectric strenght
Current carrying capacity
Cost

Derating Factors:
How cables is laid ( Air, Duct or barried )
Ambient temperature (45 degree)
Grouping factor
Thermal insulation factor
Placement
At the area center
In-active place
Feeding a radius of 25-30 meters
Same place in each floor
Connected with a riser
20% Spare
Fed from the Main Distribution Board
Types of loads:
Normal loads
Essential loads
Critical loads

Back-up schemes:
Additional transformer
Generator
Generator + UPS
Using emergency lighting kits Why calculated ?
Max. permitted: 5%

Factors Affecting V.D.:
Max. demand current
Lenght of cable
K: c.s.a & insulation 6- Distribution Panels 9- Emergency 1- Study Architectural Plans 10- Voltage Drop Single Line Diagram AutoCAD
2D and 3D design and drafting DIALux
lighting design software Sizing:
1.25 Ampere rating of circuit

Types:
MCB - Automatic trip
MCCB - Higher ratings adjustment
ACB - Adjustable

DIALux
Room Geometry
Required Lux
Lamp Type
Uniformity Factor

Select Emergency Lamps
And insert Exit Signs

Circuits Wiring
Max. 8-10 lamps per circuit
Max. 1200 Watt per circuit
limited passage through walls
Notes:
Locations are determined by the owner
Generally: each wall or every 3 meters
Normal, power, 3-phase power sockets
Isolating switches for air conditioning

Select Emergency Sockets

Circuits Wiring
8 normal sockets per circuit
1 power socker per circuit
1500 Watt per circuit
3- Power Sockets 2- Lighting 4- Circuit Breakers 5- Cables Steps of Electrical Design No time plan or objectives
Lack of practical data
Consultant's perspective
No value added or contribuation to science
Busy professor
Many buildings Feedback & Analysis Thyristor drive
DC motor starter
Adjustable speed drive
Variable frequency control Motor Control Center Measuring Devices Consists of: Overload
Short Circuit
Phase Failure
Phase Sequence 3 Ammeters + Voltmeter 3 Ammeters + Voltmeter
Running hour device Overload
Short Circuit
Earth leackage
Thermal overload
Locked rotor
Long starting time
No. of startings / hour Motors 1- Protection
2- Control Function Protection Devices Input to MCC Motor Protection Devices Motor Measuring Devices Input to MCC Industry = Motors 80% of average country energy usage Motor Starting Full Voltage Soft Starting Direct On-Line Star/Delta
Auto-transformer
Primary resistor/Reactor Reduced Voltage Witricity Desertec Foundation Chevrolet volt
November 2010 Battery
Motor
Charging
Emisions Launched 2009 12 European companies
PV systems and wind parks
6,500 square miles in the Sahara Desert
15% of Europe electricity By 2050

"Within 6 hours deserts receive more energy from the sun than humankind consumes within a year" Dr. Gerhard Knies, Chairman of the Supervisory Board Negatives Solar Impulse Project Solar powered plane
12,000 photovoltaic cells
The wingspan is 80.0 m ( larger than Airbus A380 )
Up to 36 hours ( 9 hours of night flying )
Circumnavigation of the globe in 20–25 days in 2012

launched 2003 Building first electric vehicle network
Opened its first functional charging station in December 2008 at Cinema City in Pi-Glilot, Israel
Battery exchange stations Founded 2007 General design principles
Overview on many topics
Experienced professor
Teamwork
Master new softwares; AutoCAD & DIALux
Documentation; read & search Positives Required Softwares Residential
(1) Residential
(2) Green Green Entrance Exit Factory Admin. Parking Main Electric
Room Layout Questions 7- Current Calculations 8- Single Line Diagram 1 out of 2 Bus-Bar 3 Bus-Bar 2 Bus-Bar 1 2 out of 3 Transformer 1 Transformer 2 3.6m X 7m
300 lux
Fluorescent 4x18 watt Incandescent Halogen Fluorescent Compact Fluorescent High Pressure Mercury 11- Power Factor Correction Why ?
High Current
Energy Loss
Larger Wires & Equipments
Cost
Main Distribution Board
Administration Building Distribution Panel
Basement Bus-Bar Lighting Panel - 1
Basement 12- Transformer Selection bahyaboelezz@hotmail.com
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