TABLE OF CONTENT Application Areas 3 Safety Aspects 3 Cold Commissioning (GP - Step 108.4) 4 Check Readiness for Individual Tests (GP - Activity 108.4.1) 4 Perform Individual Tests (GP - Activity 108.4.6) 4 1. Outdoor Circuit Breaker (SF6) 4 2. Outdoor Disconnector 9 3. Current Transformer 11 4. Voltage Transformer 19 5. HV connections 23 6. Power Transformer 26 7. MV Cable 38 8. Substation Earthing Resistance 40 9. Interlockings 44 Hot Commissioning (GP - Step 108.5) 45 Check Readiness
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SAFETY PRECAUTIONS IN USING ELECTRICITY:- 1. Avoid water at all times when working with electricity. Never touch or try repairing any electrical equipment or circuits with wet hands. It increases the conductivity of electric current. 2. Never use equipment with frayed cords‚ damaged insulation or broken plugs. 3. If you are working on any receptacle at your home then always turn off the mains. It is also a good idea to put up a sign on the service panel so that nobody turns the main switch ON
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Any earth fault on a 440V system is considered to be a serious trouble and immediate action is required to identify the faulty circuit. Any earth fault on 220V or any low voltage lighting circuit can be considered as important but need not require immediate attention. However‚ attention should be paid at the next earliest opportunity. Finding Earth Fault on 440V circuit Whenever there is an earth fault alarm‚ immediately inform to electrical officer (if he is on board). First action is to check
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current and voltage to moving if don’t take a protection or neglect transformet can be burn or controlling attendant can be exposed very huge voltage. All electrical systems require some kind of insulation to prevent short circuits and leaking currents. 3 forms of insulators: Solid‚ liquid and gaseous Performance of these insulators depend on the temperature. Classification according to their temperature rating: International Electrotechincal Commission has categories
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a visual processing unit‚ is a specialised electronic circuit designed to rapidly manipulate and alter memory to accelerate the creation of images in frame buffer intended for output to a display. GPUs are very efficient at manipulating computer graphics‚ and their highly parallel structure makes them more effective than genera; purpose CPUs for algorithms where processing of large blocks of data is done in parallel. It is a specialized circuit designed to accelerate the image output in a frame buffer
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processing steps‚ which ultimately determine the device and the circuit performance characteristics. In order to establish links between the fabrication process‚ the circuit design process and the performance of the resulting chip‚ the circuit designers must have a working knowledge of chip fabrication to create effective designs and in order to optimize the circuits with respect to various manufacturing parameters. Also‚ the circuit designer must have a clear understanding of the roles of various
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(1) * Packet switching * Circuit switching * Virtual Circuit switching * Message switching BY: JIHAD MOHAMMED SIDDIG 27/2/2013 Packet switching in networks Packet switching is used to optimize the use of the channel capacity available in digital telecommunication networks such as computer networks‚ to minimize the transmission latency (the time it takes for data to pass across the network)‚ and to increase robustness of communication Circuit switching in networks is a methodology
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College of Engineering and Architecture Ateneo de Davao University E. Jacinto St.‚ Davao City CPE 420: Computer Systems Architecture [Evolution of Computers – From 1st Generation to Present] November 13‚ 2012 Prepared for: Engr. Eleonor Palconit Prepared by: Jhunorjim C. Zandueta The evolution of computers is considered one of the most rapid technological development in the history of human innovation. Within just 50 years‚ computers had evolved
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Definition of ’Moore’s Law’ An observation made by Intel co-founder Gordon Moore in 1965. He noticed that the number of transistors per square inch on integrated circuits had doubled every year since their invention. Moore’s law predicts that this trend[->0] will continue into the foreseeable future. Although the pace has slowed‚ the number of transistors per square inch has since doubled approximately every 18 months. This is used as the current definition of Moore’s law. History The term
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The Five Generations of Computing The history of computer development is often referred to in terms of five distinct eras‚ or "generations" of computing devices. Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate‚ resulting in increasingly smaller‚ cheaper‚ more powerful and more efficient and reliable devices. The First Generation: 1946 to 1955 The first computers used vacuum tubes for circuitry‚ magnetic drums
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