Sfra test is nothing but a sweep frequency response analysis, which is used to find out the physical condition of transformer windings, alternator rotors windings etc. Doble engineering company doble warrants the products that it manufactures to be free from defects in material and workmanship for a period of one year from the. Doble provides very comprehensive solution for the test data management and has developed a number of datafocused solutions to help remove physical and jobless work processes allowing the user to regulate the collection, storage and organization of quality test data. Power transformer services doble engineering company. Sweep frequency response analysis, sfra, is a test which investigates the mechanical integrity of power transformers 11, 12. The company offers mainly digital marketing support and mobile and web based developments as well as entre. Mseries, dta and sfra downloads doble engineering company. Introduction to sweep frequency response analysis youtube. Tony demaria electric provides full electrical testing and maintenance to the industrial and marine customer, as well as the independent power producer. Close any previous version of the software that is running on your pc. View prakash vashis profile on linkedin, the worlds largest professional community. Every day thousands of users submit information to us about which programs they use to open specific types of files. Detect hidden transformer faults using sweep frequency response analysis. Previously tony has spent over 10 years with national grid in the uk and the us.
Today many companies are increasingly looking to outsource for answers to their toughe. Enterprise and data technology, overseeing the complete software and cloud product vision of the company. Analysis sfra for detecting mechanical failure or movement of windings due to short circuits, mechanical stresses or transportation. Christopher tynan, eit denver, colorado professional.
Doble sfra accessories include two options for measurement cables, as well as a performance verification cell to help you confirm that your m5400 sweep frequency response analyzer and leads are working properly. The actual developer of the software is doble engineering. Doble products third harmonic leakage current monitor. Open a command prompt and navigate to the storefrontreferencearchitecture directory.
Worldclass service and support doble engineering company. See the complete profile on linkedin and discover prakashs connections and jobs at similar companies. Learn about applications and advantages of pb lite, a test plan and results management database for doble s protection suite software. The frax series of sweep frequency response analyzers sfra detects potential mechanical and electrical problems that other methods are unable to detect. Dv fra software can directly import and playback doble, megger and omicron sfra test records allowing the user to compare the fra500 test records against other devices on the market.
Sfra testing on transformers dismantling a power transformer to determine its condition is hardly ever a practical possibility. Run the sfra program by doubleclicking the icon or selecting. Tds presents doble m4110 leakage reactance interface the m4110 enables the m4100 automatic insulation analyzer to measure the short circuit impedance of transformers, a vital tool for diagnosing. The m5400 sweep frequency response analyzer adds a powerful tool to your qualitycontrol and maintenance toolkit, allowing you to see inside the transformer and detect even subtle changes in the mechanical structure of the core and windings without costly detanking. Tds presents doble m4110 leakage reactance interface youtube. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files. Jun 24, 2015 tds presents megger frax series sweep frequency response analyzers detects potential mechanical and electrical problems that other methods are unable to detect. The electrical power supply must be working reliably 247. Sweep frequency response analysis sfra proceeds by applying a sinusoidal signal of constant amplitude and variable frequency to one end of the winding under test u1f. The software also provides an analytical tool that can perform correlation coefficients between two traces per the ieee c57. Tds presents megger frax series sweep frequency response.
Doble test assistant software doble engineering company. Pioneered by doble the sweep approach has become the industry standard and is the preferred method for making frequency domain measurements. Apr 29, 2020 data management options are available for a range of test data, including t doble software, sfra sweep frequency response analysis, and dta domestic tariff area. Doble test assistant lies within system utilities, more precisely device assistants. From its inception, vics vision was, and is to develop and manufacture innovative test equipment for use in testing substation ehv circuit breakers and other electrical. Training the next generation of power industry workers. Training track international conference of doble clients. The duc provides the processing power necessary to run advanced software in the field. Tony mcgrail is presently the doble engineering solutions manager for online diagnostics, providing condition, criticality and risk analysis for utility companies. Doble m5400 sfra analyser the doble m5400 sfra analyser detects mechanical failure or movement of windings due to short circuits, mechanical stresses or transportation. The high quality level of our educational offers speaks for itself.
F6000 software tdoble software designed to support the tdr900 and dobles legacy tdr9000 instrument, tdoble software enables users to make and compare breaker timing measurements, create easy to use test plans and view test results. Dta is a trusted and intelligent software platform that takes asset testing and data analysis to the next level. Frax99, frax101 and frax150 sweep frequency response analyzers. See the list of programs recommended by our users below. It is ideal for use by the protection operation field groupsorganizations. We are present at numerous exhibitions, events and conferences all over the world. Once the appropriate bands are selected the ccfs can be evaluated in the context of the individual parts of a transformer. Tde is presently servicing its customers throughout the western united states, hawaii, alaska, mexico, the caribbean, and asia. M5400 sweep frequency response analysis doble engineering co. Response analysis sfra dobles m5000 series uses sweep frequency response analysis sfra for detecting mechanical failure or movement of windings due to short circuits, mechanical stresses or transportation. The following traces were obtained using the doble sfra software for m5200m5300. Sfra is a shareware software in the category miscellaneous developed by doble engineering.
Earlier versions of node dont work with sfra functional tests. A signal is injected into the test object a winding, for example at a given frequency and the resulting signal at the other end is measured. While we do not yet have a description of the sfra file format and what it is normally used for, we do know which programs are known to open these files. It uses the sweep frequency response analysis sfra principle and measures the electrical transfer function over a wide range of frequencies. Becky g amsterdamsoundsystem remix yellow claw 0d69be7807244379be79811b38f4aa56 bilmez dediler 0d6a1ff65e430f9756a65b365226ce taita alerta kamarada 0d6fb52046964b3aabd809a4fc2bba33. Too often, crews are stalled by time spent downloading and uploading test data in the office or struggling with equipment that wont connect to computers.
Contact your client service engineer or doble representative if you have any questions. The m5400 uses sweep frequency response analysis, a proven technique for making accurate and repeatable measurements. With this software users can plot, overlay, analyze, and print data. Insfra has been serving its customers for 11 years by way of delivering tailor made solutions to its stakeholders. Doble has been a trusted name in diagnostic solutions for over 90 years. Advanced analysis and decision support built into the software. Sweep frequency response analysis sfra test procedure. The m5200 sfra windows based software includes analysis tools that help. Download the latest user guides, software and firmware for the m4, m5 sfra, m7 and dta series. Before we start testing, are there reasons to suspect the.
The company has close working relationships with the worlds electric power. Doubleclicking results in an incorrect installation that you will have to uninstall later. The sfra technique determines whether transformer repair is necessary without costly detanking. The software frequency response analyzer sfra is one of several tools included in the powersuite digital power supply design software tools for c2000 microcontrollers. Matthew kennedy is doble engineering companys solutions director. Sfra powersuite digital power supply software frequency. Current valid software licenses will auto update after downloading the new software file. Major utilities and service companies have used the fra method for more than a decade. The end results will be a series of ccfs, evaluating different components of the transformer. This webinar covers the basics of sweep frequency response analysis sfra including what tests to perform, when to perform them and how to make proper measurements. Frequently asked sweep frequency response analysis. The winding of transformer or alternator rotors may be exposed to mechanical stresses during unsafe transportation. With the database hosted over the internet by doble the same company that.
Knowledge of electrical mv and hv equipment is a must. Were hiring careers at north central electric langhorne, pa. These accessories give you the opportunity to choose what best fits your testing program and ensure testing accuracy. Sweep frequency response analyzer sfra fra500 dv power. It was initially added to our database on 08282008. Schedule at a glance international conference of doble.
Doble engineering company is an accredited by the international association for continuing education and training iacet. Nce primarily deals with power generation and electric utility companies. The registered agent on file for this company is capitol corporate services, inc. Download the latest doble engineering software product updates. Figure 1 cable and lead connections to the sfra instrument. It was originally introduced to mac users in mac os 9. The latest sfra test sets make these techniques more accessible, more convenient and. Tds presents doble m5200 sfra test system the m5200 sweep frequency response analyzer adds a powerful tool to your qualitycontrol and maintenance toolkit, allowing you to see inside the. Doble test assistant software is your comprehensive software tool for the collection, analysis and management of test results for the doble mseries family of instruments. Matthew kennedy is doble engineering company s solutions director. Frax99, frax101 and frax150 sweep frequency response.
Sfra iii, llc is a texas foreign limitedliability company llc filed on may 22, 20. View christopher tynan, eits profile on linkedin, the worlds largest professional community. Top 8 best test data management tdm tools 2020 cllax. The doble universal controller duc is a rugged tablet computer powerful enough to operate doble s suite of high voltage test equipment and software solutions while being tough enough to withstand the rigors of electrical field testing. Activation keys are available to registered contract users with an active maintenance agreement. Omicron provides innovative testing, diagnosis and monitoring solutions for electrical energy systems with customers in 140 countries since 1984.
The instrument sends an excitation signal into the transformer and measures. Use it to ensure transformer performance, reduce maintenance cost, and. Use it to ensure transformer performance, reduce maintenance cost, and increase the service life of transformers. Franeo 800 was developed for testing the mechanical and electrical integrity of power transformers after transportation or exposure to high fault currents. This short course will take the user through the process of performing sfra and provide the fundamentals necessary for analysis of sfra waveforms and indications of mechanical damage. Nce is looking for an experienced field technician within the medium and high voltage industry. Use it to help determine how a transformer is deteriorating, if it can go back in service after a. The response is measured on the other end of the winding u2f. The companys filing status is listed as terminated and its file number is 0801788914. Doble engineering company offers diagnostic instruments, services, and the worlds premier library of statistically significant apparatus test results for the benefit of energy generation and delivery companies and industrial power users worldwide.
By using the latest proven sfra test techniques, it is possible to accurately assess transformer condition without dismantling it. You can easily manage data management projects tailored to your business practices. Special consideration should be given to safety when testing a transformer without oil so that excessive voltages are not applied. Doble complies with the ansiiacet standard, which is recognized internationally as a standard of excellence in instructional practices. Manufacturers represented in louisiana transmission. This webinar will walk the audience through doble s completely new. Specifically it will focus on how doble has helped companies simplify testing, automate data processes, improve efficiency and streamline business processes from the field to the office. These tests show, in trace form, the winding transfer function of the transformer and are valuable to determine if any damage has occurred during shipping or during a through fault. To start of with my interview and onboarding process was almost done in a day and later came to know that 99% of the interviews are completed within the same day so to make the candidates life easier. With a start up like mind set, ofs is a great place grow your career. Doble engineering company literature request form mkt46 march 7, 2008 2 section 7 revision quantity m4000 automated insulation analyzer brochure mktslm4000b 0308 m4100 technical specifications mktslm4100ts 0907 m4110 leakage reactance interface mktslm4110 0107 m2hmcm insulation analyzer brochure mktslm2hmcm0207 doble test.
Today, many companies are increasingly looking to outsource for answers to their. Schedule at a glance international conference of doble clients. Data management options are available for a variety of test data including dta, t doble, sfra, pd, and protest files choose which options are needed for your organization data management projects are tailored to your business practices. Core grounds, core displacement, and other core and winding problems can be revealed by this test. The sfra includes a software library that enables developers to quickly measure the frequency response of their digital power converter. There is certainly a cultural shift from other companies in india.
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