Duration 5 Days

Course Description

To successfully inspect and test electrical equipment, Electrical personnel must first fully understand the technology of the electrical equipment. After the successful start-up and subsequent continued operation, electrical equipment requires periodic inspection and testing

This will ensure the electrical equipment operates correctly so that production is maximized in a safe, cost effective and efficient manner.

Course Objective

• understand maintenance purposes and types.
• understand inspection and testing methods
• Understand the principles of risk assessment and be able to apply these to the formulation of an appropriate policy for the maintenance of electrical equipment.

Course Outline

• Introduction
• Pre Assessment

Principles of Maintenance

• Preventive Maintenance (PM)
• Predictive Maintenance(PdM) 
• Impact of Maintenance
• Maintenance Scheduling For Electrical Equipment

Introduction to Switchgear, Circuit Breaker and Transformer

Switchgear

• Definitions, Ratings, Typical Construction
• Control Power System

Electrical Maintenance of Protective Equipment & Instrument Transformers

• Potential & Current Transformers
• Transformer Differential Protection
• Feeder & Motor Protection

Circuit Breaker

• Construction and Contact Operation
• Manual and Electrical operating Controls
• Safe Operating Methods
• Mechanical Inspections
• Contact Resistance Tests
• Insulation Resistance Tests
• Insulating Gas and Oil Analysis

Transformer Construction

• Tank , Core, Coils, Types and Ratings
• Bushings , Tap Changers , Factory Testing
• Dry, Oil and Liquid Filled Types

Operation

• Theory of Operation, Vector and Connection Diagrams
• Important Electrical Relationships & Formulas

Auxiliary Equipment 

• Gas Relays , Fans and Pumps , Gauges , Tap Changer Controls

Failure Causes

• Detailed analysis of several case histories
• Lightening , Oil Decay , Component Failures
• Internal & External Faults 

Testing Practices & Standards 

• Oil Analysis , Chemical Analysis , Dissolved Gas Analysis
• Furan, Inhibitor, Power Factor Water and PCB Testing

Electrical Testing 

• Insulation Resistance and Polarization Index Tests
• Turns Ratio, Excitation Current and Polarity Testing
• Capacitance and Power Factor Testing
• Winding Resistance Tests

Risk Assessment

• The need and concept of risk assessment
• Review of the existing work procedures
• General risk assessment relating to electrical machinery.
• Identification of deficiencies that relate to electrical safety
• Manpower, Public and Equipment safety
• Risk management, Problems and case studies
• Identification of additional safety measure related labels and signage locations within your facility
• Post Assessment