By the end of this course delegates will be able to:

• Power distribution Transformer operation and construction.
• Electrical transformer types.
• Power Transformers characteristics
• Voltage Regulation and Efficiency
• Power Transformers construction Testing & Inspection.
• Core and Winding construction Testing & Inspection.
• distribution Transformer accessory Testing & Inspection.
• Electrical transformer protection Testing & Inspection.
• Oil transformer Testing & Inspection.
• Test of distribution Transformer
• Mechanical and Electrical Testing & Inspection.
• Distribution Transformer DC tests
• Distribution Transformer AC tests

This training course is suitable to a wide range of professionals but will greatly benefit for:

• Electrical Engineers
• Electrical Supervisors
• Maintenance Technicians

This interactive training course includes the following training methodologies as a percentage of the total tuition hours:

• 35 % Class room Lectures
  • PowerPoint
  • Projector and white board
• 65 % In-Class exercise works and Practical Sessions (Simulation Software / Practical Exercises )
  • Individual & Group Exercises
  • Simulation
  • Case Studies

Module One:

• Pre-test
• Power system components
• Importance of Transformer in power system
• Voltage levels for low , Medium and High
• Types of Transformer
  • Distribution
  • Power
  • Instrument
• Transformer coils connection
  • Delta
  • Star
  • Open Delta Configuration
• Fundamentals of Power, Distribution & Transformers protection
• Transformer Design and specifications and selection basis.
• Include overview for purpose and theory of special transformers (Galvanic isolated and Scott T)
• Transformer Operation
• Types of Magnetic field
  • Stationary
  • Rotating
  • Pulsating
• Transformer component
  • Magnet wires & bars of transformer
  • Coil / Winding Connections
  • Transformer Core-type
  • Transformer Shell-type
  • Transformer Core lamination
  • Bushing
  • Oils
  • Gauges (Level, Temp., Pressure,…..)
  • Silica Gel Breathers
  • Overpressure Devices
  • Buchholz relay
  • Bushings, Insulators, and surge arrestor

Module Two:

• Transformers losses and efficiency
• Transformer types based on functionality, size, coolers, insulation.
• Transformer Impedance basis and related design aspects
• Power transformers loading limitation & related factors
• Parallel Operation of transformer
• Load control sharing of Transformer
• Tap Changers principle, mechanism and Voltage Control
• Idea of operation Tap changer
• Types of Tap changer
  • Online Tap changer
  • Off Line Tap changer
• Transformer cooling
• Types of Transformer Cooling
  • Self-air cooled Transformer
  • Forced Air Cooled Transformer
  • Oil-Immersed Self cooled Transformer (ONAN)
  • Oil-Immersed forced air cooled Transformer (ONAF)
  • Oil-Immersed Forced water cooled forced Transformer (OFWF)

Module Three:

• Oil of Transformer
• Oil Characteristics
• Oil testing
  • IEC
  • ASTM
• Oil Maintenance
• Oil Quality Index and the Breakdown Voltage Test
• Maintenance definition
• Types
  • Run to Fail maintenance
  • Preventive Maintenance PM
  • Corrective Maintenance CM
  • Predictive Maintenance
  • Improvement maintenances
• Troubleshooting definition
• Troubleshooting electrical procedure

Module Four:

• Electrical Power Transformers Oil PM
• Electrical Power Transformers Predictive Maintenance
• Electrical Power Transformers Corrective Maintenance CM
  • Electrical Power Transformers Overhauling
  • Electrical Power Transformers insulation test
  • Oil PM & Dissolved Gas Analysis
  • Transformer bushing
  • Transformer radiator
  • Transformer winding PM
  • Transformer Predictive Maintenance
  • Transformer Corrective Maintenance CM
  • Transformer Overhauling
  • insulation test

Module Five:

• • Tan Delta
  • Transformer Ratio Test
  • Double induced Voltage
  • Thermography analysis
  • Transformer Noise Suppression
  • Internal Transformer Defects
• Electrical characteristics of Transformer Insulating Oil
• The process of regeneration/reclamation includes the following:
  • Physical-Chemical Regeneration and Dehydration of Transformer Insulating Oil
  • Restoration of all physical, chemical and electrical oil characteristics

CDGA attendance certificate will be issued to all attendees completing a minimum of 80% of the total course duration.