necessary agility. Since it is difficult to quantify the usefulness of DES in providing decision support‚ the authors have depicted a case study where simulation is used to simulate and forecast the Printed Circuit Board (PCB) manufacturing line at ABB Industrial Systems‚ Sweden. This case study deals with the application of simulation in the operation of the production line such as production planning‚ resource estimation and estimation of work load. If there was no forecast‚ the operators had to
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IEEE Recommended Practice for Network Communication in Electric Power Substations. [B7] IEEE Std C37.1-2007‚ IEEE Standard for SCADA and Automation Systems. [B8] IEEE Std C37.20.1-2002‚ IEEE Standard for Metal Enclosed Low Voltage Switchgear. [B9] “Relay Trip Circuit Design” April 1999—an IEEE Power System Relaying Committee Substation Protection Technical Report‚ available at http://www.pes-psrc.org/. [B10] “The Utilization of Digital Fault Recorders in Protections System Analysis on Tenega National
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GHz (Shelly). Frame Relay Frame relay is a means of providing a high-speed service that supports LAN interconnectivity‚ Internet access‚ file transfer and bandwidth-hungry applications including corporate intranets and desktop video conferencing. It enables devices to be allocated bandwidth on a Committed Information Rate (CIR) and also allows for rapid applications (Invsat.com). In a frame relay network‚ a geosynchronous satellite (GEOs) is used as the link between frame relay switches‚ or routers
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Examination Paper Semester I: Managerial Economics IIBM Institute of Business Management Semester-1 Examination Paper Managerial Economics Section A: Objective Type (30 marks) • • • This section consists of multiple choices & Short notes type questions. Answer all the questions. Part one carries 1 mark each & Part two carries 5 marks each. MM.100 Part one: Multiple choices: 1. It is a study of economy as a whole a. Macroeconomics b. Microeconomics c. Recession d. Inflation 2. A comprehensive formulation
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is a new technique for the protection of transmission systems by using the global positioning system (GPS) and fault generated transients. In this scheme the relay contains a fault transient detection system together with a communication unit‚ which is connected to the power line through the high voltage coupling capacitors of the CVT. Relays are installed at each bus bar in a transmission network. These detect the fault generated high frequency voltage transient signals and record the time instant
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in flight or can be used for ground operations. It is connected to the hot battery bus regardless of the battery relay position. The hot battery bus powers the engine fire extinguishers‚ firewall shutoff valves‚ entry and cargo lights‚ clocks‚ modifications‚ ground communications‚ RNAV memory to older avionics and standby boost pumps. The hot bus also supplies the battery power relay that allows the battery to run other electrical systems not connected to the hot bus. External 28v DC power may
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AJAY KUMAR GARG ENGINEERING COLLEGE 27th km DELHI -HAPUR BY PASS ROAD GHAZIABAD -201009 A REPORT ON INDUSTRIAL TRAINING [pic] AT U.P POWER TRANSMISSION CORPN. LTD 132 KV SUB –STATION‚ GZB SUBMITTED BY SUBMITTED TO SARANG SAXENA Asstt. Prof. RAVINDER KUMAR EN-F DEPT. OF ELECTRICAL AND
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Rays falling on the receiver are obstructed ‚ this obstruction is sensed by the Microcontroller CHAPTER :- 2 BLOCK DIAGRAM AND ITS DESCRIPTION 2.1 Basic Block Diagram Enter Exit Relay Driver A T 8 9 S 5 2 Signal Conditioning Exit Sensor Enter Sensor Light
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isolators‚ the transistor are connected to the limiting resistor‚ the transistor collector terminals are connected to the 12v relay and the contacts of the relay are connected to the output port of the device. The system can be adapted to homes‚ offices‚ department of institution etc. Key words: Bridge rectifier‚ filter capacitor‚ limiting resistor‚ opto- isolator‚ relay‚ transformer‚ user interface‚ voltage regulator 1. INTRODUCTION . Power providers constantly deal
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has output lines to signal any reaction to the incoming events (e.g. start an engine‚ open/close a valve‚ etc.) The system is user programmable. It uses a language called "Relay Ladder" or RLL (Relay Ladder Logic). The name of this language implies the fact that the control logic of the earlier days‚ which was built from relays‚ is being simulated. [edit]The PLCs purpose in life The PLC is primarily used to control machinery. A program is written for the PLC which turns on and off outputs based
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