A UPS (Uninterruptible Power Supply) is a device positioned between a power source, such as a wall outlet, and an electronic device, such as a computer. Its purpose is to safeguard the device from potential disruptions or anomalies in the power supply, including outages, voltage fluctuations (sags and surges), and poor harmonics. When a company considers electrical power as critical, it becomes necessary to have a continuous or backup power system in place. Installing a UPS ensures the required continuity of power supply. However, maintenance can pose challenges, particularly when bypassing the UPS is necessary. Compatibility issues related to power quality can lead to failures, which were the initial reason for installing the UPS.

Course Objectives:

By the end of the course, participants will be able to:

Understand the basis for the use of a UPS
Understanding of the reasons for, and benefits of, a UPS and its battery system
Understanding how a UPS works
Analysis of critical loads and the benefits of supporting them with a UPS
Understand Critical Load Applications

Who Should Attend?

Electrical Engineers, technicians, and maintenance professionals should benefit from this course. Electrical Engineers Involved in writing specifications and evaluating submitted tenders by UPS supplies should find this course quite beneficial to their professional performance. Also practicing engineers should find this course quite helpful and useful.

Personnel who should attend are:

Electrical engineers
Maintenance technicians
Electrical supervisors
Engineering professionals
Project engineers

Course Outlines:

Introduction to Resilient Systems

UPS power sources and regulations
Critical loads and equipment categories
Power quality and mains failure
Standby generator set characteristics
Generator sizing and compatibility
Protection devices and switches
UPS or generator

Introduction to Reliability

Early life or burn-in
Useful life or normal operating period
Wear-out or old age
Meantime to failure (MTTF)
Meantime between failures (MTBF)
Availability and mean time to repair (MTTR)
Measuring Reliability for UPS Systems
Mean Time Between Failure
Infant Mortality UPS Failures
Random UPS Failures
Wear Out Failures
Mean Time to Repair
Categorizing UPS Loads and Load Types
Uninterruptible Power Supplies (UPS)
Objectives of the utilization of UPS
Specifications
Methods and Options of Technologies
Off-Line or Standby UPS
On-Line or No Break UPS
Line Interactive UPS
Installation and testing of UPS
Maintenance of UPS
Design criteria and selection of UPS

Static UPS

Characteristics of online and offline UPS
Double conversion UPS
Delta conversion UPS
Transformer based and transformer less UPS
UPS operation modes
UPS components functionality and filters
UPS rating and power factor
Parallel systems and redundancy

Rotary UPS and Maintenance

Components of diesel rotating UPS or DRUPS
Operations of DRUPS
Types and configuration of DRUPS
Commercial static UPS and operation modes
UPS maintenance
Generator maintenance
Generator size considerations
New generation standby generator set

Batteries Types and Chargers

Lead-acid battery characteristics
Nickel-cadmium battery characteristics
Storage and care of batteries
Choosing battery size and location
Charging methods and type of chargers
Battery care
Battery safety
Battery maintenance

Battery Monitoring System and Preventive Maintenance

Merits of the battery monitoring system
Battery monitoring system architecture
Condition monitoring for UPS system
UPS safety and hazards
Harmonics

Filters