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This is very useful for people who never had the chance to know how switchgear works in a power system, before they start their career in the power industry. It has many pictures that help understand the concepts more clearly. This gives a clear idea about the ways of protect a power system from any kind of external disturbance and damage. Introduction:Bravindranath m chander rapidshare wrote this book describing different methods used by scientists and engineers to control disturbances from outside sources in electric circuits with simple-to-read diagrams and step-by-step procedure illustrations. It is written for anybody who understands the use and function of a switch and its enclosure, and also for those who like to study the basics of electric circuits. The book gives an insight into different methods used by scientists and engineers. The main purpose is to understand the basic concept of electric circuits; it then goes on to describe various ways of using switches such as relay, thyristor, synchronous generator valves (SGVs), micro-controller based protection systems (MCPs), Programmable Gate Drivers (PGD), high-voltage electrostatic protection systems (HV ESD). The book explains the concept of switching and protection, how to select and configure the relays and barriers in design. The book also covers topics on logic controlled protection, digital signal processing (DSP) and DSP based power systems protection and control using microcontroller. The main aim of this book is to acquaint students with various aspects of Power Systems Protection & Switchgear. This provides a broad overview of power system characteristics. It also gives an understanding of how circuit breakers, fuses, HVDC circuits & switchgear work in practical situations. The author does his best to make this text understandable for everyone who wants to get familiar with the basics of electrical science and engineering. Power systems protection and switchgear is a well-written guide that provides an understanding of how to control power system disturbances and failures, similar to other engineering books that explain the concept of circuit breakers and electric circuits without taking too much time explaining the circuit. This book also describes many other types of protection such as insulated gate bipolar transistors (IGBT), thyristors, solid state relays (SSRs), pulse transformers, current limiters, inductive voltage divider circuit and oil-filled thyristors. The utility and software applications for these systems are also discussed in detail. Some technical applications include: Designing Switchgear & Circuit Breakers: Material Handling Equipment Switchgear utilizes DC electricity to move heavy objects. In electric power shops, DC power is used to operate machines, but in most cases they are not switched. In fact, most of the machines require AC electric power. Switchgear is a set of control devices that convert or rectify AC power into DC electricity or vice versa, and then convert the resulting power into electric output that can be used by the machine in question. An important feature in protection and switchgear is a circuit breaker. These equipment contain a number of relays which work in series and the relay 'control' points show up as solid contacts on each side of the breakers. In some cases, external circuit breakers are placed after an automatic transfer switch (ATS). cfa1e77820
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