Otros libros que te pueden interesar

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  Introduction to Power System...

  Dr. Hidaia Mahmood Alassouli

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  Power system protection systems have three basic components: Instrument transformers, Relays, Circuit breakers
  
  The function of the CT is to reproduce in its secondary winding a current I' that is proportional to the primary current I. The CT converts primary currents in the kiloamp range to secondary currents in the 0–5 ampere range for convenience of measurement.
  
  The function of the relay is to discriminate between normal operation and fault conditions. The OC relay in Figure 2 has an operating coil, which is connected to the CT secondary winding, and a set of contacts. When |I'| exceeds a specified ''pickup'' value, the operating coil causes the normally open contacts to close. When the relay contacts close, the trip coil of the circuit breaker is energized, which then causes the circuit breaker to open.
  
  System-protection components have the following design criteria:
  • Reliability: Operate dependably when fault conditions occur, even after remaining idle for months or years. Failure to do so may result in costly damages.
  • Selectivity: Avoid unnecessary, false trips.
  • Speed: Operate rapidly to minimize fault duration and equipment damage. Any intentional time delays should be precise.
  • Economy: Provide maximum protection at minimum cost.
  • Simplicity: Minimize protection equipment and circuitry.
  
  Since it is impossible to satisfy all these criteria simultaneously, compromises must be made in system protection.
  
  The book consists from the following sections:
  1. Chapter 1: Power System Faults:
  2. Chapter 2: Instrument Transformers.
  3. Chapter 3: Overcurrent and Earth Fault Protection Relays.
  4. Chapter 4: Radial System Protection.
  5. Chapter 5: Zones of Protection.
  6. Chapter 6: Differential Relays.
  7. Chapter 7: Distance Relays.
  8. Chapter 8: Transformer Protection.
  9. Chapter 9: Generator Protection.
  10. Chapter 10: Busbar Protection.
  11. Chapter 11: Circuit Breakers.
  12. Chapter 12: Fuses.
  13. Chapter 13: References.

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  Pulmonology - Lung Diseases and...

  Ava Westwood

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  Pulmonology is a branch of medicine that focuses on the diagnosis, treatment, and prevention of diseases affecting the respiratory system. The respiratory system, comprising the lungs, airways, and associated structures, is vital for the process of respiration, which allows the body to exchange oxygen and carbon dioxide. Pulmonology addresses a broad range of conditions, from common ailments like asthma and chronic obstructive pulmonary disease (COPD) to more complex disorders such as lung cancer, pulmonary hypertension, and interstitial lung disease. This field plays a critical role in ensuring optimal lung health and preventing the potentially debilitating effects of respiratory conditions. 
  The importance of pulmonology has grown significantly in recent years due to the increasing prevalence of respiratory diseases worldwide. Factors such as air pollution, smoking, and the global rise in respiratory infections have contributed to the heightened demand for specialized care in pulmonology. Chronic respiratory diseases, such as asthma and COPD, are among the leading causes of morbidity and mortality globally. Early diagnosis, effective treatment, and ongoing management are key to improving quality of life and reducing the burden of these diseases on patients and healthcare systems. 
  Pulmonologists are medical professionals who specialize in diagnosing and treating respiratory diseases. They are trained to perform a variety of diagnostic procedures, including pulmonary function tests, imaging studies, and bronchoscopy, to assess lung function and identify underlying conditions. Pulmonologists also manage respiratory diseases through a combination of pharmacological treatments, lifestyle modifications, and, in some cases, surgical interventions. They work closely with other healthcare providers, including primary care physicians, oncologists, and thoracic surgeons, to deliver comprehensive care for patients with complex respiratory conditions.

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  Cozy Fireplace: Warm White Noise...

  Baby Sleep

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  Establish a soothing and effective bedtime routine with For a Quality Baby Sleep Routine. 
  This audiobook is designed to guide parents in creating a peaceful sleep environment that promotes deep, restful sleep for their baby. With calming white noise and practical sleep tips, you can help your little one relax and develop a consistent sleep routine, making bedtime easier for everyone. 
  Imagine your baby falling asleep quickly and staying asleep longer, giving you peace of mind and much-needed rest. A well-crafted sleep routine is key to helping your baby feel secure, calm, and ready for bed each night. 
  Start building a better bedtime routine today. Download For a Quality Baby Sleep Routine and bring calm and consistency to your baby’s sleep schedule for a more restful night’s sleep.

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  Math Fun: Exciting Daily...

  Jasper Bellingham

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  Math Fun: Exciting Daily Challenges for Young Learners 
  ⭐⭐ Simplified Guide & Explanations Included ⭐⭐ 
  Are you eager to advance your skills and solidify your understanding of essential math concepts? 
  Searching for a comprehensive resource that includes everything you need to master essential math skills through engaging and reproducible practice? 
  Your search ends here! 
  This guide will be your ultimate companion for enhancing your understanding, applying your skills, and participating in hands-on activities. With this book, you’ll be fully prepared for success. 
  Updated for the latest learning techniques. 
  Key features of this enhanced guide: 
  - In-depth insights into mastering essential math skills 
  - Clear explanations of fundamental math concepts 
  - Effective strategies for practicing and problem-solving 
  Our guide stands out with its thorough approach, ensuring you grasp important concepts deeply rather than just skimming the surface. 
  Please note that this guide is an independent resource and not affiliated with any official educational entity. 
  Crafted with a straightforward structure and easy-to-follow language, our guide ensures seamless transitions between topics. Say goodbye to complex jargon and embrace clear, precise, and accurate content. 
  So, why wait? Click the BUY NOW button, get your guide, and embark on your journey to mastering essential math skills through engaging daily challenges! 
  Choose Math Fun: Exciting Daily Challenges for Young Learners today and transform your learning experience!

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  EGG-SCITING Secrets to Maximize...

  Ronan Quillan

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  EGG-SCITING Secrets to Maximize Your Fertility Potential! 
  ⭐⭐ Simplified Guide & Explanations Included ⭐⭐ 
  Are you eager to enhance your fertility and unlock the secrets to maximizing your potential?  
  Looking for a comprehensive guide that covers everything you need to know to elevate your fertility journey?  
  Your quest ends here! 
  This guide is your ultimate companion for deepening your understanding, applying your knowledge, and engaging in practical exercises. With this resource, you’re set for success. 
  Updated for the latest insights on fertility optimization. 
  Key features of this comprehensive guide include: 
  - In-depth insights into unlocking your fertility journey  
  - Detailed explanations of fertility concepts 
  - Effective strategies for preparation and tackling challenges 
  Our guide stands out with its thorough coverage, ensuring you have every tool needed for your success. Concepts are explored with care and clarity. 
  Please note that this guide is an independent resource and not affiliated with any official fertility organizations. 
  Crafted with a clear structure and accessible language, our Fertility Guide ensures seamless transitions between topics. Say goodbye to dense jargon and welcome content that is straightforward, accurate, and informative. 
  So, why wait? Click the BUY NOW button, secure your guide, and embark on your successful journey to enhance your fertility potential!

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  Herring - A History of the...

  Mike Smylie

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  The story of herring is entwined in the history of commercial fishing. For over two millennia, herring has been commercially caught and its importance to the coastal peoples of Britain cannot be measured. At one point tens of thousands were involved in the catching, processing and sale of herring. They followed the shoals around the coast from Stornoway to Penzance and many towns on Britain's east coast grew rich on the backs of the 'silver darlings'.
  Fishing historian Mike Smylie looks at the effects of herring on the people who caught them, their unique ways of life, the superstitions of the fisher folk, their boats and the communities who lived for the silver darlings.
  With a wealth of illustrations, this fascinating book reveals the little-known history of the herring. And for those who've neglected the silver darlings for lesser fish such as cod and haddock, there are a number of mouth-watering recipes to try.

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