INTRODUCTION The primary function of protective devices in a power system is to detect short circuits and isolate the fault by activating the appropriate circuit interrupting devices‚ which increases the reliability and safety of the electrical system. The relay co-ordination study is required to select the protective devices and necessary settings so that circuit interrupter closest to the fault opens before other devices. SCOPE OF WORK Perform protective device co-ordination analysis for HV panels
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Abstract— Arc flash (AF) protection is very important for all power and process industries to maintain the safety of equipment and personnel at the workplace. This describes causes and characteristics of AF faults and gives an overview of existing AF protection methods. This proposes design and development of a microcontroller based AF protection system which utilizes physical characteristics‚ viz. unique signature of the light‚ current and pressurized sound signals during AF within tap changer/switchgear
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rising‚ less dense magma -Shallow earthquakes -Grabens= normal faulting Paleontology study of fossils Transform Boundaries -two plates slide past each other -Offset along other types of plate boundaries -Shear motion along faults -May occur as a single fault‚ or groups of parallel faults Convergent Boundaries -two plates coming together -One subducts and is damages -Oceanic plate is older‚ colder‚ denser‚ gets subducted -Characteristics depend on collision type -Ocean-ocean
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[3] Canada‚ Australia ‚ Germany ‚ New Zealand ‚ Scandinavia ‚ and the United Kingdom . [ citation needed ] Though divorce laws vary between jurisdictions‚ there are two basic approaches to divorce: fault based and no-fault based. However‚ even in some jurisdictions that do not require a party to claim fault of their
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Symposium on Software Reliability Engineering (ISSRE) in 1990. He also received Best Paper Awards in ISSRE ’98 and in ISSRE ’2003. Professor Lyu is an IEEE Fellow and an AAAS Fellow‚ for his contributions to software reliability engineering and software fault tolerance. Software Reliability Engineering: A Roadmap Michael R. Lyu Computer Science and Engineering Department The Chinese University of Hong Kong‚ Hong Kong lyu@cse.cuhk.edu.hk various systems and applications has been growing exponentially
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FMEA & FTA •FMEA/FMECA •Fault Tree Analysis Arnljot Hoyland‚ Marvin Rausand‚ System Reliability Theory‚ John Wiley & Sons‚ Inc.‚ 1994‚ ISBN 0-471-59397-4 Meng-Lai Yin 1 FMEA (Failure Mode and Effects Analysis) • Qualitative analysis • Purpose: identify design areas where improvements are needed to meet reliability requirements • One of the first systematic techniques for failure analysis • Developed in the late 50s to study problems that might arise from malfunctions of military
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fksjhfjk fkjshfkjahbkf daskfnfdsajhfewa hkah kawhd awk dkjawdkja dhiashdkadhawedhkh kjhakjdh eakwj hrkjwdfkrjashkjawhkjhkaw ha hkfdhakjMarch 17‚ 2014. To The Managing Director‚ Opex Group‚ Mirpur‚ Dhaka. Subject: Prayer for considering my fault & let me to continue my current job. Dear Sir‚ With due respect I would like to draw your attention to the fact that‚ I am H.M. Ashrafuzzaman working as a Quality Assurance Officer at the TCP account in your company. I have been working
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April 1st lecture FINAL EXAM IS WORTH 40% Professor goes by Abhi (Obi) like star wars One required textbook Earthquakes science and society lecture will be on additional material not in book but will be guided by materials in the book. take notes (HE SAID IT ALOT!) his lecture slides will not be posted. CH.1 for this lecture Why Learn Earthquakes? Plate Tectonics they are not static they always move. they are moving in a limited space it will cause friction when it moves
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that Ms. Smith is just as much responsible as they are. Issue: Is it equal responsibility on both parties as involved? Rule: (a) In an action based on fault that is brought against: (1) one (1) defendant; or (2) two (2) or more defendants who may be treated as a single party; the claimant is barred from recovery if the claimant’s contributory fault
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SECTION 3. - ALTERNATIVE OBLIGATIONS An alternative obligation is one wherein various prestations are due but the performance of one of them is sufficient as determined by the choice‚ which‚ as a general rule‚ belongs to the debtor. Right of choice‚ as a rule‚ given to debtor. GENERAL RULE: The right to choose belongs to the debtor/ obligor Except: When the right has been expressly granted to the creditor Right of choice of debtor not absolute. LIMITATION ON THE DEBTOR’S CHOICE (1) The debtor
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