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AC Motor Protection Author: Velimir Lackovic AC motors are available in a wide range of configurations and features which allows them to be used in numerous applications. AC motors need to be protected but determining the method of protection is usually independent of the motor and load type. The selection process is based on the...Learn More

Switching Transients Analysis Fundamentals Author: Velimir Lackovic Switching transients severe enough to cause problems in industrial power systems are most often associated with inadequate or malfunctioning breakers or switches and the switching of capacitor banks and other frequently switched loads. The arc furnace system is most frequently studied because of its high frequency of switching...Learn More

Shunt Capacitor Bank Design and Protection Basics Author: Velimir Lackovic Shunt capacitor units are typically used to deliver capacitive reactive compensation or power factor correction. The use of shunt capacitor units has gained popularity because they are relatively inexpensive, simple to install and commission and can be placed anywhere in the electrical distribution system. Their...Learn More

PV Systems Safety Author: Velimir Lackovic This course is intended to be a reference with helpful and easily-accessible instructions on how to work safely with photovoltaic (PV) systems. It includes description of specific hazards, their frequent causes, and strategies to prevent and avoid them. This course has three different sections: PV System Characteristics and Hazards:...Learn More

Principles of HVDC Transmission Author: Velimir Lackovic Designers must decide between AC and DC transmission. This course addresses this challenge by exploring line losses and their relationship to the rating and size of chosen conductors. This course is suitable for engineers with a desire to understand the basic principles of HVDC transmission. It reviews the...Learn More