Electrical engineering courses

MAINTENANCE & TROUBLESHOOTING OF UPS SYSTEMS AND BATTERY POWER SUPPLIES

Ref No: 2015053

INTRODUCTION
There is no doubt that Uninterruptible Power Systems are integral to the con-tinuous supply of clean power for mis-sion critical infrastructure. In order to understand the UPS systems and their influence on reliability, an overview of UPS terminology, concepts of integrat-ing UPS systems, static systems, rotary systems, redundancy, configuration, batteries, and energy storage systems will be discussed.

COURSE OBJECTIVES
Upon the successful completion of the course, participants will be able to:
• Describe the basic building blocks of UPS Systems
• List typical Power Quality Problems
• Detail the operation of the popular UPS Systems
• Maintain and test Lead Acid and Nickel Cadmium Batteries
• Apply Safe working practice for UPS’s and Batteries

TRAINING METHODOLOGY
This interactive training course includes the following training methodologies as a percentage of the total tuition hours:-
30%    Lectures
30%   Workshops and Work Presentation
20%   Group Work & Practical Exercises
20%   Videos & General Discussions
 

 

COURSE CONTENTS
Chapter 1: Overview

1- Introduction 
2- Power quality 
3- Power quality improvement 
4- Importance of continuity of electric power supply
5- Planning for reliability 
6- UPS system options 
7- Static UPS systems
8- Batteries
9- Charging and discharging performance
10- Selection and sizing of batteries
11- Maintenance and disposal of batteries
12- Summary

Chapter 2: Power quality 
1- Introduction
2- Limits on electrical parameters 
3- What is power quality?
4- Power quality indicators
5- Power quality problems-effects and mitigation
6- Summary 

Chapter 3: Continuity of power and UPS systems 
1- Introduction 
2- Needs of equipment 
3- Understanding failures 
4- Effect of power interruptions 
5- Planning for reliability 
6- Redundancy and automation 
7- Uninterrupted power supply systems 
8- Rotary UPS systems 
9- Advanced rotary UPS systems 
10- Hybrid UPS system 
11- Summary 

Chapter 4: A refresher on semiconductors, rectifiers and inverters 
1- Introduction 
2- Principle of semiconductor devices-Junction diode
3- Transistors 
4- Thyristor 
5- MOSFET and IGBT 
6- Rectifiers (Converters) 
7- Ripple and its control 
8- Harmonics 
9- Inverters 
10- Summary 

Chapter 5: Static UPS systems 
1- Introduction 
2- General configuration 
3- Types of static UPS systems 
4- UPS metering, indications, alarms and protection 
5- Other types of UPS systems 
6- Power quality and UPS 
7- UPS applications to computer loads 
8- UPS configurations in computer installations 
9- Rating of UPS systems for computer equipment 
10- Redundant UPS configuration 
11- Grounding of UPS derived supplies 
12- Summary 

Chapter 6: Basics of Batteries 
1- Introduction 
2- Battery and its two basic types 
3- Secondary cells-construction 
4- Applications of secondary batteries 
5- General features 
6- Battery types and construction 
7- Chemical reactions in batteries 
8- Salient features of lead-acid battery 
9- Salient features of nickel-cadmium battery 
10- Main types of lead-acid batteries 
11- Lead acid battery-manufacturing process 
12- Summary 

Chapter 7: Charging and discharging of batteries 
1- Introduction 
2- The need for charging 
3- Types of charging 
4- Charging of batteries 
5- Float charging 
6- Boost charging 
7- Completion of charging 
8- Overcharging and undercharging 
9- Discharging of batteries 
10- Battery charging equipment 
11- Nickel cadmium batteries 
12- Summary 

Chapter 8: Selection and sizing of batteries 
1- Applicable definitions 
2- Introduction 
3- Selection of batteries-basic approach 
4- Application information 
5- Sizing procedure 
6- Calculating the number of cells Duty cycle 
7- Computing the capacity of battery based on duty cycle 
8- Alternative method of sizing 
9- Correction factors 
10- UPS battery sizing 
11- Summary 

Chapter 9: Installation of batteries 
1- Introduction 
2- Standards 
3- Requirements for safety during installation and operation 
4- Receipt and checking of batteries and accessories 
5- Storage prior to installation 
6- Pre-installation planning 
7- Installation of battery racks 
8- Handling and pre-installation checks 
9- Mounting of cells on racks 
10- Installing flame arrestors and labels 
11- Making electrical connections 
12- Checking the integrity of electrical connections 
13- Making external electrical connections 
14- Summary 

Chapter 10: Battery Failures 
1- Importance of batteries 
2- Major causes of battery failures 
3- Sulphation and hydration 
4- Failure Modes 
5- Summary 

Chapter 11: Maintenance of UPS Systems and Batteries 
1- Need for maintenance 
2- Safety precautions 
3- Maintenance activities 
4- Maintenance and inspection batteries 
5- Importance of records 
6- Capacity testing for assessing residual battery life 
7- Test equipment for capacity/integrity testing 
8- Monitoring of batteries for predicting failures 
9- Conductance testing - getting the most from a battery 
10- Plate polarization measurements 
11- Disposal and recycling of batteries 
12- Summary 

Appendix A: Safety of personnel working on batteries 
Appendix B: Course exercises 
Appendix C: Answers to exercises 

 

• Electrical Technicians & Engineers
• Instrumentation and Control Engineers
• Consulting Engineers
• Electrical Engineers
• Project Engineers
• Maintenance Engineers
• Power System Protection and Control Engineers
• Building Service Designers
• Data Systems Planners and Managers
• Electrical and Instrumentation Technicians

 

Trainees shall receive a portfolio containing a comprehensive course manual.

Attendees shall receive a certificate of attendance from AMAD Tech.