Electrical engineering courses

PREVENTIVE & PREDICTIVE MAINTENANCE FOR OVERHEAD LINES

Ref No: 2015067

CHAPTER 1: SUPPLY SYSTEMS.    
1- Introduction
2- Transmission and distribution system
3- Comparison between d.c. and a.c. systems for transmission and distribution.
4- Comparison between overhead systems and underground systems.
5- Influence of working voltage on size of feeders and distributors in d.c. systems. 
6-BVarious systems of transmission of electrical power.  
7- Comparison of cost of conductors-over head systems.
8- Comparison of   cost of  conductors-underground  systems.
9- Results of comparison of systems. Choice of working voltage for transmission. 
10- Solved examples.

CHAPTER2: MECHANICAL DESIGN OF OVERHEAD LINES.    
1- Main components of overhead lines. 
2- Line supports. 
3- Conductor materials. 
4- Spacing between conductors of overhead lines. 
5- Span lengths. 
6- Sag. 
7- Calculation of sag. Stringing chart.
8-  Statutory rules. 
9- Electricity Authority rules 1956. 
10- Solved examples. 

CHAPTER 3: OVERHEAD LINE INSULATORS.                          
1- Introduction. 
2- Insulator materials. 
3- Types of insulators. 
4- Failure of insulators. 
5- Distribution of potential over a string of suspension insulators. 
6- Methods of increasing string efficiency. 
7- Arching hom and grading ring. Solved examples. 

CHAPTER 4: TRANSMISSION LINE CONSTANTS.         
1- Introduction. 
2- Resistance of a transmission line.   
3- Skin effect.
4- Inductance of a transmission line. 
5- Proximity effect. 
6- Capacitance of a transmission line. Transposition of conductors

CHAPTER 5: TRANSMISSION CALCULATIONS.      
1- Introduction. 
2- Regulation and efficiency of a transmission line.
3- Regulation and efficiency of short transmission line. 
4- Effect of load power factor on transmission efficiency and regulation.
5- Medium transmission line calculations. 
6- Ferranti effect.
7- Solved examples

CHAPTER 6: ECONOMIC PRINCIPLES OF TRANSMISSION
1- Introduction
2- Economic size of conductors
3- Modification of Kelvin's law or Kelvin's Kapo law 
4- Practical aspects of Kelvin's law.  
5- Kelvin's law for cables
6- Limitation of Kelvin's law

CHAPTER 7: ELECTRICAL SAFETY EQUIPMENT
1- INTRODUCTION
2- GENERAL INSPECTION AND TESTING REQUIREMENTS FOR ELECTRICAL SAFETY EQUIPMENT
3- FLASH AND THERMAL PROTECTION
4- HEAD AND EYE PROTECTION
5- RUBBER-INSULATING EQUIPMENT
6- HOT STICKS
7- INSULATED TOOLS
8- BARRIERS AND SIGNS
9- SAFETY TAGS, LOCKS, AND LOCKING DEVICES
10- VOLTAGE-MEASURING INSTRUMENTS
11- SAFETY GROUNDING EQUIPMENT
12- GROUND FAULT CIRCUIT INTERRUPTERS
13- SAFETY ELECTRICAL ONE-LINE DIAGRAM
14- THE ELECTRICIAN'S SAFETY KIT

CHAPTER 8: SAFETY PROCEDURES AND METHODS
1- INTRODUCTION
2- THE SIX-STEP SAFETY METHOD
3- PRE-JOB BRIEFINGS
4- ENERGIZED OR DE-ENERGIZED?
5- SAFE SWITCHING OF POWER SYSTEMS
6- ENERGY CONTROL PROGRAMS
7- TAGOUT-LOCKOUT
8- VOLTAGE-MEASUREMENT TECHNIQUES
9- PLACEMENT OF SAFETY GROUNDS
10- FLASH HAZARD CALCULATIONS AND APPROACH DISTANCES
11- TOOLS AND TEST EQUIPMENT
12- THE ONE-MINUTE SAFETY AUDIT

CHAPTER 9: INSPECTION AND TESTS
I-PERFORMANCE
-Determining equipment condition 
-Reasons for inspections and tests 
-Associated test guidance and records. 
2-REQUIREMENTS
-Electric workers, instruments, and reports 
-Frequency of inspection

CHAPTER 10: TRANSMISSION AND DISTRIBUTION SUBSTATIONS
1- GOVERNING CONSIDERATIONS
-Type of substations covered 
-Electrical system relationships
-Substation safety concerns 
-Substation security 
-Periodic inspections of substations 
-Visual inspections of substations 
-Infrared inspections of substations 
2- STRUCTURE MAINTENANCE
-Importance of maintenance
-Galvanized steel structures 
-Painted steel structures
-Aluminum structures
-Wood structures 
-Concrete for structure foundations 
-Structure connections and joints.
3- SUBSTATION YARDS
-Provision of yards 
-Fences for yards
-Warning signs at yards 
-Substation yards 
4- INSULATORS
-Function of insulators 
-Tests of insulators 
-Inspection and repair of insulators 
-Cleaning of insulators 
5- V-BUS STRUCTURES
-Definition of bus structures 
-Maintenance of bus structures 
-Cleaning of bus structures 
-Testing of bus structures 
6- INSTRUMENT TRANSFORMERS
-Definitions of instrument transformers
-Short-circuiting dangers
-Maintenance of instrument transformers
-Tests of instrument transformers 
7- BUSHINGS
-Definition of bushings 
-Type of bushings covered 
-Maintenance of bushings 
-Bushing power factor tests 
-Bushing insulation resistance test

CHAPTER 11: OVERHEAD DISTRIBUTION
1- ASSOCIATED OVERHEAD DISTRIBUTION GUIDANCE

-Relevant overhead distribution guidance
-General construction guidance
2- DEFINING VOLTAGE NOMENCLATURE
-Voltage terminology 
-Voltage level classification 
-Voltage delivery usage 
-Voltage origination point 
-Voltage terminology usage
3- TYPES OF MAINTENANCE
-Component line maintenance 
-Other types of line maintenance 
4- WOOD POLES
-Life span of wood poles 
-Supplementary data on wood poles. 
-Wood pole record keeping and inspections.
-Wood pole maintenance crew instructions. 
-Wood pole spot inspection procedures. 
-Wood pole-by-pole inspection procedure. 
-Determination of wood pole adequacy 
-Wood pole replacement  
-Wood pole reinforcement 
5- CROSSARMS, BRACES, AND PLATFORMS
-Pole cross arms 
-Pole braces 
-Pole platforms 
6- MAINTENANCE WOOD PRESERVATION
-Initial wood treatment
-In-place wood treatment above ground 
-Wood pole treatment at or below the ground line. 
7- METAL POLES
-Metal pole usage 
-Distribution line metal poles 
-Transmission line metal towers
-Pole-line metal hardware 
-Painting of metal poles 
8- CONCRETE POLES
-Concrete pole overview 
-Concrete pole foundations
9- OVERHEAD OPEN WIRE CONDUCTORS
-Overhead conductor construction
-Overhead conductor material 
-Overhead conductor covering 
-Overhead conductor sag 
-Overhead conductor damage 
-Overhead conductor repairs 
10- OVERHEAD CABLE
-Overhead cable construction 
-Overhead cable repair requirements
11-CONDUCTOR CONNECTIONS
-Overhead line conductor requirements
-Overhead line conductor splices
-Overhead line connections 
-Overhead line armour rods 
12- POLE-LINE INSULATORS
-Pole-line insulator related material 
-Insulator operating performance
-Types of pole-line insulators
-Pole-line insulator class requirements 
13- GUYS
-Guy functional requirements
-Guy strand 
-Anchor assemblies 
-Guy attachments 
-Guy strain insulators 
14- TREE TRIMMING
-Tree trimming objectives s 
-Tree trimming clearances and climbing space 
-Tree trimming tools 
-Types of tree trimming 
-Tree trimming instructions
-Treating a tree trimming wound 
-Tree removal methods
-Tree killing chemicals 
-Poisonous plants . 
15- LIVE-LINE MAINTENANCE
-Live-line maintenance requirements. 
-Categories of energized-line maintenance 
-Energized-line methods 
-Live-line operations 
16- AERIAL LIFT REQUIREMENTS
-Aerial lift construction 
-Aerial lift specifics 
 

Trainees shall receive a portfolio containing a comprehensive course manual.

Attendees shall receive a certificate of attendance from AMAD Tech.