Course Description

Power plants and electrical utilities require a continuous highly stabilized power supply to ensure stable work conditions. To avoid potential risks in plants failure a stabilized UPS system is urgently needed in all power and factory utilities. The course is intended to develop knowledge of the need for a UPS, types available, UPS components, batteries, generators and maintenance.

Target Audience

·   Electrical Maintenance Engineer

·   Electrical Maintenance Foreman

·   Electrical Maintenance Senior Foreman

Course Objective:

To be able to Operate and perform preventive, predictive (condition based) and corrective (breakdown) maintenance activities on UPS, batteries and battery chargers etc.

At the end of the course, participants will:

·    Be able to Understand the basis for the use of a UPS,

·    Be aware of different types of batteries,

·    Be able to Operate and perform preventive, predictive (condition based) and corrective (breakdown) maintenance activities on UPS, batteries and battery chargers,

·    Understand the batteries maintenance and life cycle.

Program Outline

·   Understand the Basic Building Blocks Common to all UPS Systems;

·   Have a knowledge of the Construction and Operation of the Major Types of Industrial UPS Systems;

·   Understand how to maintain and Performance Test Lead-Acid and Ni-cad Battery Systems;

·   Identify the Hazards and Safe Work Practices Related to UPS Systems and Batteries

Daily Course Plan & Contents:

·   Introduction

·   Why have a UPS?

§ Types and Duration of Power System Disturbances

ü  Sags

ü  Surges & Spikes

ü  Outages

ü  Phase Relationships

§ The ITIC (CBEMA) Curve

·  The Three General Types of UPSs

§ Kinetic (Motor Generator Sets)

§ Flywheel

§ Static

·   The Three Building Blocks of a UPS

§ Rectifier

§ Batteries

§ Inverter

·  The Three Types of Static UPSs

§ The Traditional UPS

§ The Static UPS

§ The Static UPS with Bypass

§ UPS Topologies

§ Single Phase

ü  Rectifiers

ü  Inverters

§ Three Phase

ü  Rectifiers

ü  Inverters

·  Review of Passive Electronic Components

§ Volts, Ohms, and Amps in DC and AC Circuits

§ Resistors

§ Capacitors

ü  Formed Caps

ü  Failure Mode of Electrolytic Capacitors

§ Inductors

ü  Coils and Chokes

ü  Single Phase Transformers

ü  Three Phase Transformers

-  Wye

-  Delta

·  Review of Active Components

§ Diodes

ü  Half-wave Rectification

ü  Full-wave Rectification

ü  Polyphase (3F ) Rectification

ü  Wye/Delta Rectification

ü  Troubleshooting Diodes

ü  Hands-on Laboratory Activities

§ Transistors

ü  Applications of Transistors

ü  Troubleshooting Transistors

ü  Hands-on Laboratory Activities

§ Thyristors

ü  SCRs

-  Applications

-  Troubleshooting

-  Hands-on Laboratory Activities

ü  TRIACs

-  Applications

-  Troubleshooting

-  Hands-on Laboratory Activities

ü  IGBTs

-  Applications

-  Troubleshooting

ü  Triggering Circuits

·   How Batteries Work

§ Introduction

§ Primary Batteries

§ Secondary Batteries

·  Lead-Acid

§ The Chemistry

§ Battery Types

§ Capacity Factors

§ S-Curves

§ Battery Safety and Maintenance

§ Float and Equalize Voltages

§ Load Testing

·  Nickel Cadmium

§ The Chemistry

§ Battery Types

§ Capacity Factors

§ Battery Safety and Maintenance

§ Float and Equalize Voltages

§ Load Testing

·  Troubleshooting and Maintenance of UPS Systems

§ Manufacturer’s Recommended Preventive Maintenance

ü  Installation

ü  Quarterly Checklists

ü  Annual Checklists

§ Tools and Equipment

§ Electrical Safety

· Course Conclusion

· Examples and exercises