By the end of this training course, participants should 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 % Classroom 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