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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groups‚ while discrimination refers to actions toward them. Racism is a type of prejudice that involves set beliefs about a specific racial group. As stated above‚ stereotypes are oversimplified ideas about groups of people. Stereotypes can be based on race‚ ethnicity‚ age‚ gender‚ sexual orientation—almost any characteristic. They may be positive (usually about one’s own group‚ such as when women suggest they are less likely to complain about physical pain) but are often negative (usually toward other
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most or all earth faults‚ again depending on the earthing method. By connecting an REF relay to CTs installed in correct locations on the transformer‚ one can use REF protection to complement differential protection in detecting transformer earth faults. Obtaining maximum benefit from REF protection requires that one consider many factors‚ including whether to select high-impedance REF or lowimpedance REF relays. In making this selection‚ one should understand the theory behind each option. Historically
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Through the Marxist viewpoint‚ prejudice is a philosophy utilized by the bourgeoisie to separation specialists. Marxist position on race is basic and clear. As indicated by Albert Szymanski‚ supremacist philosophy spread in the media‚ instructive framework‚ and different foundations‚ together with the real conveyance of relative frivolous favorable position inside the regular workers‚ serves to complicate the whole average workers including the ethnic larger part‚ in this manner enabling cash-flow
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Car Jackers Project Report CS 4710 - Fall 2012 Team members Jeremy Bonnell - jjbonne@gmail.com Tong Wu - tongwutwu1@gmail.com University of Utah Abstract The Car Jacker is a device that allows a person to control settings of their car with an Android smartphone. Vehicle features controllable by the Car Jacker include the ignition‚ locks‚ and climate control settings. Whether one would like to remotely heat and defrost their car on an ice cold morning‚ or cool it down in the heat of
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Underreach Transfer Trip (PUTT) Permissive Overreach Transfer Trip (POTT) Unblocking Step Distance Step or coordinated overcurrent Current Differential 7/ GE / December 7‚ 2014 What is distance protection? Intended REACH point F1 Z I*Z V=I*ZF I*Z V RELAY (V‚I) For internal faults: > IZ – V and V approximately in phase (mho) > IZ – V and IZ approximately in phase (reactance) 8/ GE / December 7‚ 2014 What is distance protection? F2 Intended REACH point
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circuit is omitted for simplicity. In reality‚ the circuit looks something like this: Typically in industrial relay logic circuits‚ but not always‚ the operating voltage for the switch contacts and relay coils will be 120 volts AC. Lower voltage AC and even DC systems are sometimes built and documented according to "ladder" diagrams: So long as the switch contacts and relay coils are all adequately rated‚ it really doesn’t matter what level of voltage is chosen for the system to operate
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STAMFORD UNIVERSITY BANGLADESH. LAB-REPORT COURSE CODE : EEE 458. COURSE TITLE : POWER SYSTEM PROTECTION LAB. PERFORMANCE DATE : 25.01.2010 SUBMISSION DATE : 13.02.2010 SUBMITTED TO : Mr. Shaikhul Arefin Khan. Lecturer‚ Department of EEE‚ Stamford University‚ Bangladesh. This report is Prepared on the base of Energypac study tour in Saver. POWER SYSTEM PROTECTION LAB
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………………………………………..6 Fig 3.2 Circuit Diagram Of MAX232…………..…………………………………...……………9 Fig 3.3 PIC Diagram………..……………………………………..……………………..............13 Fig 3.4 Relay Operation….……………………………………..….….………………………....14 Fig 3.5 Relay Energized (On)……...……………………………....…………………………….15 Fig 3.6 Relay De-Energizing (Off)………...……...…………………..…………………………16 Fig 3.7 Relay Operation (2)…...………………………….…….....……………………………..17 Fig 3.8 Torque Production in Dc Motor………………………….……………………..….……18 Fig 3.9 Induced Voltage In The Armature
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Race and Ethnicity ENG125 September 23‚ 2013 Race and Ethnicity The two literary works that I have chosen were “Country Lovers” and “What It’s like to be a Black Girl”‚ to me they share the same theme of Race and Ethnicity. Country Lovers was a really good short story that described lovers of the country. What it’s like to be a Black Girl was a short poem that talked about the background of race and the dilemma of ethnicity. To me the poem and the short story both talked about race and
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