Maintenance and Testing of Electrical Equipment Course

Introduction:

This course provides an understanding of the role of commissioning in a project of any size. Emphasis will be on the importance of project planning and preparation, from engineering to commissioning and startup. This course deals with safety considerations in maintenance and testing procedures for all electrical system components. It also discusses field testing of major components of an electrical system, including motors, generators, transformers, switchgear, protection and control, UPS, and battery systems.

Course Objectives:

After participating in this course, you will be able to:

• Describe how to plan and implement electrical system commissioning
• Pick out field tests for electrical distribution systems
• Select among corrective and preventive maintenance for electric power distribution systems
• Explain the AC and DC testing of electrical equipment
• Specify the handover, acceptance, and transition to operations

Who Should Attend?

• Managers & Team Leaders
• Project Engineers
• Design Engineers
• Electrical Engineers
• Commissioning & Testing Engineers
• Consulting Engineers
• Electrical Technologists
• Facility/Plant Managers
• Operations & Maintenance personnel

Course Outlines:

• AC & DC voltage testing techniques
• Motors & generators
• Transformers & switchgear
• Cables & accessories
• Battery system & protective relay system
• Power distribution system maintenance
• Grounding, ground resistance measurement
• Harmonics & predictive maintenance
• Electrical safety

Overview of Field Test Requirements

• Development of the test regime
• Outline of typical tests
• Interpretation of test results
• Troubleshooting

Basic Electrical Theory

• DC circuits basics
• AC circuit laws
• Impedance and power factor
• Bridge methods

DC Voltage Testing Techniques

• Insulation resistance tests
• Step voltage and high voltage tests
• Testing power factor correcting capacitors

AC Voltage Testing Techniques

• Power factor and dissipation factor tests
• AC high potential test
• Safety precautions

Testing of Motors and Generators

• Insulation resistance
• High potential test
• Power factor test
• Dissipation factor
• Voltage surge comparison testing

Transformers

Switchgear

• Insulation resistance measurement test
• DC or AC high potential testing
• Power factor or dielectric loss test
• Circuit breaker contact resistance test

Cables and Accessories

• Insulation resistance measurement test
• DC overpotential testing
• Voltage versus leakage current
• Power factor test
• Cable fault locating

Battery System

• Tests for acceptance
• Performance
• Service
• Connection resistance
• Impedance tests.

Protective Relay Systems

• Testing instrument transformers and protective relays.

Power Distribution System Maintenance

• Types of maintenance (corrective, preventive, and predictive)
• Canadian Code requirements

Power System Grounding and Ground Resistance Measurement

• Solidly grounded, ungrounded, and resistance grounded systems
• Grounding electrodes
• Factors affecting soil resistivity

Methods of ground resistance measurement

• Power Quality, Harmonics, and Predictive Maintenance

Effects of harmonics on equipment

Power quality measurement

• Electrical Safety, Arc Flash Hazard, Switching Practices and Precautions

Lockout and tag-out

Personal protective equipment

Safety grounds

• Overview of Commissioning

Terminology

Objectives

Specifications

Development of procedures, forms and documentation

Interpretation of results

Case Study on Commissioning and Testing