Switzerland throws lifeline to swissair, returning grounded carrier. All external antenna systems enter the facility via this single point grounding system. Foreword all construction of federal aviation administration faa operational facilities and the electronic equipment installed therein shall conform to this standard. Swissair rise and grounding of a once famous airline. The program conforms to ieee 80 2000, ieee 81 1983 and ieee 837 2002. For that reason, we want to start early with a solid grounding on datums and datum reference frames. The gemi program performs analysis of a single steel conduit system or steady state analysis short circuit or normal operation of an electric power system network with or without steel conduits. Substation grounding software is a utility program accessible through the software menu structure, that allows the user to alternate between the autocad and substation grounding software environments. When all swissair aircraft were forced to stay on the ground on october, 2nd, 2001 due to the airlines. Specifically, it allows the user to model any power system together with its. After swissair grounding the aircraft was stored in zrh and left for mojave on.
Not my words, but a quotation you could read in almost any swiss newspaper back in late 2001 after the grounding of swissair. Grounding cords, grommets, wrist bands and straps, snaps and sockets, and dissipative table and floor mat materials, just to mention a few, play a very important role in reliable and continuous monitoring through grounding devices. Singlepoint grounding the worst thing you could do for your equipment, as well as. Protect your equipment from lightning damage with grounding and lightning protection from dx engineering. The actual version of the software totbem is available for testing purposes and also use at no cost and can be run on any basic personal computer as of 2012 with no special requirements. Substation grounding software is not a substitute for autocad. The grounding of national carrier swissair ten years ago sent shockwaves through switzerland, and across the country there were calls for. All the grounding electrodes present in a building must be bonded together to form a. Cyme power engineering software and solutions optimize the design of new grids and reinforce existing grids the use of the cymgrd software allows for the rapid analysis of various design alternatives to choose an economical solution for any particular installation. Use of ecdis for passage planning knowledge of sea. It is capable of modeling the grounding system under study and correlates the measurements obtained by the sgm hardware shown above for the purpose of identifying the. Static grounding equipment scully grounding systems are the original selfproving systems for vehicle static ground verification provides an electrical bond to ensure that the vehicle or tank is at the same potential as the loading rack or fill station. All swissair flights were grounded and nothing could be said about if and when they.
Electricity association technical specification 4124. The md11 is a modernised, slightly stretched and reengined development of the dc10. Xgslab is one of the most powerful software for grounding system analysis, electromagnetic fields, interference and lightning analysis and the only software on the market that takes into account both en and ieee standards. First, a soil was modeled, then a grounding grid was added and measurements were done. Advanced grounding concepts ground impedance and soil. The research results were published in the reports shown below and led to the development of the gemi grounding electromagnetic interference analysis software program, also available for free download below. Nec grounding electrode 1 nec defines the iec excps as nonintentional ground electrodes within the facility, such as. Egl grounding indicator with automatic pump control and.
The winsgm software and the various measurement functions are described here. Electrical engineers use powertools to perform harmonic analysis, transient stability analysis, short circuit analysis, and to determine demand load, voltage drop, arcflash hazard analysis and protective device coordination. Visual checks at compilation scale prior approving the plan must be carried out. The resulting earthing types are displayed both on the one line diagram and for the various connected cables. The distribution 0 50 100 150 200 250 200 150 100 50 0 fig. Download technical datasheets and 3 part specifications for site grounding with smartbuilding index, the resource construction industry professionals rely on to help with critical decisionmaking csi masferformat division 33 79 00. Swiss puts a220s back in service after engine forces grounding. We were going to attend a conference on 3d software. Grounding indicator is recommended to be used in the control circuit of a pump to prevent it from being started until the static grounding circuit is completed, and to shut down the pump automatically if the static grounding circuit is disconnected. Grounding systems in the generating stations should able to meet the following grounding principles. The navigating officer should make use of the check route function after passage planning to ensure that vessel will not encounter navigational hazards on the planned route.
Rightofway pro provides a complete interference analysis and mitigation design tool based on the computation modules of the cdegs software package modules such as resap for soil resistivity analysis, tralin for line parameters calculation, splits for solving electrical circuits and malz for the frequency domain grounding analysis. Advanced power concepts po box 49116, atlanta ga 30359, phone fax. Modules of the developed software tool were used to conduct some calculations which are typical for designing of the grounding systems. In fact, autocad remains a firm software requirement for substation grounding. Personal protection is the purpose of grounding in all grid. In the grounding, emi, and power quality course, you will get a comprehensive overview of design practices for grounding and electromagnetic compatibility of industrial, commercial, and residential systems. The program winigs performs analysis and design of a grounding system or multiple grounding systems that are an integral part of an electric power system.
These hazards would be mainly pertaining to grounding dangers, crossing tss line boundary and user defined alarms. Swissair collapse still reverberates swi swissinfo. Swissair planes were grounded on october 2, 2001, after the company had been in business for 71 years. Grounding design calculations part four electrical knowhow. Metallic enclosure on electrical equipment and exposed non current carrying conductive materials in generating station which are capable of being energized due to insulation failure or accidental contact of the energized conductors shall be. Multiple boosters are require when a given booster cannot provide enough power to run the trains in a given location or the track wiring that carries the. System grounding and earthing types analysis software etap. Electrical grounding and earthing linkedin slideshare. Ses has developed the most powerful grounding earthing software packages that can automatically design an entire grounding site located in multilayered soil. Guidelines for the design, installation, testing and maintenance of main earthing systems in substations. Grounding products and grounding hardware, providing the needed pathtoground for the userwearer, are an integral part of any esd program. Swissair grounding could have been avoided this content was published on january 24, 2003 12. Software tool for grounding system design request pdf.
The concept of a booster district only exist when you have more than one booster running the layout. Were your complete source for grounding and lightning protection components, including coaxial lightning protectors, coax shield grounding kits, copper grounding straps, grounding plates and clamps, tinned copper braid, straptotower. The power system may include symmetric three phase elements as well as asymmetric three. This work presents the behavior study of a simulated grounding system using simulinkmatlab. Ge aviation s integrated ground software igs is a comprehensive ground support software application that allows the user to view, replay, and analyze flight and audio data recorded by ges solidstate crash survivable cockpit voice and flight data recorder systems. One of the best amplifier power supply grounding schemes is a star ground system, where all the local grounds for each stage are connected together at a single point, and a wire is run from that point to a single ground point on the chassis, either back at the power supply ground point or at the input jack ground. When a charged object is grounded, the excess charge is balanced by the transfer of electrons between the charged object and a ground. Cyme power engineering software and solutions substation. Modeling and simulation of a grounding system using simulink. Typically, multiple features will be referenced by each datum, so theyre a very important part of the whole thing. Imagine a wind farm producing electricity, the substation seen around the 17s mark distributes the power generated, at around the 27s mark a fault occurs, at the 30s mark a color is emitted from the ground this is where groundingearthing analysis software can determine step and touch voltages.
The packages are accurate, efficient, reliable and most of all, validated extensively with verifiable resullts. The grounding of the swissair fleet on october 2, 2001, could have been avoided had the management kept a proper grip on the carriers. Gemi grounding and electromagnetic interference program. This includes linear and distorting loads, fundamental principles of grounding and protection practices of electric power installations, the 2005 nec article 250 and other. The winsgm software controls the operation of the smart ground multimeter. Generating station grounding principles instrumentation tools. Rightofway pro worldwide leader in grounding, earthing. The georgia institute of technology has conducted research on both the shielding and equipment grounding attributes of steel conduit. Grounding is the process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size. Already a glimpse at the white cross on red ground on the tail of a swissair aircraft was able to trigger patriotic feelings in many a swiss traveling abroad. On 1 october 2001, the public was informed, via a press conference, of project phoenix and announced that parts of. Swissair grounding could have been avoided swi swissinfo. Software packages for the design and analysis of grounding. Launched on december 30 1986, the md11 was the result of a two year study to find a replacement for the dc10.
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