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Click to download the free parts To buy other parts write to sergiofeitoza@cognitor.com.br |
Contents and prices of parts of the complete training and SwitchgearDesign.Each table row is a video lasting 20 to 30 minutes andsome 20 to 30 slides. In case of doubt or to buy materials write to sergiofeitoza@cognitor.com.br Price: P1 = USD 30 P2 = USD 40 P3 = USD 60 P4 = USD 150 P5 = USD 350 |
1 Free |
Program of the course "DESIGN of SWITCHGEAR, SWITCHBOARDS, BUSDUCTS & SUBSTATIONS with software SwitchgearDesign" In this video are shown the topics of the complete course whose parts can be obtained, separately, in the list below. |
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2 |
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3 Free |
Introducing the software SwitchgearDesign: In this video you will understand the main applications and capabilities of SwitchgearDesign software. The main screens of the software are shown as well as applications, input and output variables, units, conditions of use and references used in the validation of results. |
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4 P5 |
(SOFTWARE) SwitchgearDesign COMPLETE VERSION WITH ALL THE 5 TYPES OF CALCULATIONS Here you will find the installer and the instructions to install the software and the first steps to use the software SwitchgearDesign. Include also the contents of 7b, 8b, 9b, 10b and 11c (but not the contents of 7a, 7c, 8a, 9a, 10a, 11a and 11b ) |
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5 P1 |
Video available pdf available |
SPECIFICATION OF VOLTAGES AND CURRENTS IN NEW SUBSTATIONS |
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7 a P3 |
Video available pdf available |
Concepts for temperature rise design & related tests |
7 b Free
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Simulations of temperature rise tests |
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7 c P2 |
Simulation of loading cycles |
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8 a P3 |
Concepts of calculation of electrodynamic stress and forces during short-circuit Calculation concepts for electrodynamic forces and stresses based on IEC 61117 and IEC TR 60865-2 60865-1e IEC documents: Short-circuit currents - Calculation of effects.
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8 b P2 |
Simulations of short time current and crest tests ( electrodynamic forces and stresses) |
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9 a P3 |
Concepts for internal arc tests and corresponding l overpressures |
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9 b P2 |
Simulations of internal arc tests |
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10 a P3 |
Concepts about magnetic fields and their effects The electromagnetic fields occurring in substations due to the high currents and high voltages produce different effects on people and objects nearby. High levels of permanent magnetic or electric fields have impacts on the health of people exposed to them. These effects depend on the field strength and duration of exposure. There are specific legislations specifying the maximum values that should not be exceeded. The objective is to show how to calculate the values, which may occur, depending on the geometry of the object under study and the values of currents and voltages involved. The object may be a complete substation or an enclosed metallic equipment. The main applications are:
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10 b P2 |
Mapping of magnetic fields |
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11 a P3 |
Overvoltages, insulation coordination and safety distances Concepts in which are based the technical standards for dielectric tests (applied voltage, impulse). It includes safety distances for discharges, magnetic fields and fires and explosions |
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11 b P3 |
Main dielectric tests |
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11 c P2 |
Mapping of electric fields |
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12 P2 |
Breaking and making tests in circuit breakers, switches and fuses (TRV) Here are presented the fundamentals of the main switchgear and protection equipment as circuit breakers, switches and fuses. Some particularities of the technologies are described as well as the key aspects of the TRV specifications and the breaking and making tests. |
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13 P1 |
Power arc tests in insulators strings for transmission lines ( 13 ) The repetitive occurrence of external power arcs in insulator strings at a certain point may lead to damage to the string and even falling down of the transmission line. Some high power tests are specified for verification of the ability to support these stresses. Here the concepts and specifications are explained |
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14 P3 |
Technical specifications for the purchase of circuit breakers, disconnectors, surge arresters, transformers) |
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15 a P3 |
Technical Standards for low voltage switchgear and controlgear (IEC 61439 and IEC TR 61641Here we present some aspects of the IEC 61439 (Low-voltage switchgear and controlgear assemblies) and of IEC TR 61641 (low-voltage guide for testing under conditions of arcing due to internal fault)IEC 61439 is originated from the previous series IEC 60439 where a new concept was implemented. Suppose that there is a certain switchgear design type, which was completely type, tested and there is another untested switchgear for which we wish to avoid repeating some tests. The standard permits some tests to be replaced by calculations or simulations if the basic design of the untested equipment was the same and the differences between both were not considerable. The two tests, which could be replaced by calculations in IEC 60439, were the temperature rise test and the short time current tests (electro dynamical and thermal stresses). IEC TR 61641:2014 gives guidance on the method of testing of assemblies under conditions of arcing in air due to an internal fault. The purpose of this test is to assess the ability of the assembly to limit the risk of personal injury, damage of assemblies and its suitability for further service as a result of an internal arcing fault.
Here we explain the TR 61641and clarify several aspects which cause doubts in users. |
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15 b P3 |
Technical Standards for medium voltage switchgear and controlgear (IEC 62271-200): Here we present some fundaments, opportunities and details of the IEC 62271-200 (medium voltage switchgear) This standard specifies requirements for medium voltage metal enclosed switchgear and controlgear for indoor and outdoor installation. Enclosures may include fixed and removable components and be filled with fluid (liquid or gas) to provide insulation. |
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15 c P3 |
IEC 62271-307 for extension of the validity of medium voltage switchgear test reports (fundamentals) Here we present the fundamentals of the new document IEC Technical Report TR 62271-307: High-voltage Switchgear and Controlgear – Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV. This document coincides with some principles of the IEC 61439 but with a much more complete reasoning and details for the implementation of the concepts. On the contrary of IEC 61439, it is not applicable only to temperature rise and electro dynamical forces and, instead, cover all the type tests. This document allows, observing certain rules that a test report carried out in a certain type of switchgear to be used as a basis for a study that would replace tests on an untested one of the same family. It is aimed at extending the validity of test reports to avoid the unnecessary repetition of tests of IEC 62271-200 and 62271-201 standards. Here we explain the details of this new IEC document which will have a considerable impact in the medium voltage switchgear market.. |
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16 P3 |
IEC 60890 and IEC 62208: Enclosures for cubicles and switchboards (calculations and specification) IEC TR 60890 presents a method of (air) temperature-rise assessment by extrapolation for switchgear and controlgear. This method is applicable to enclosed assemblies or partitioned sections of assemblies without forced ventilation. This method is based on the dimensions of the switchgear, the power dissipation, the size and existence of ventilations openings and the number of partitions. The results that can be obtained by this easy method are very good and consistent for the ones playing with temperature rise tests simulation. IEC 62208 is a standard to enable the specification of empty enclosures for switchgear and controlgear assemblies. It applies to empty enclosures, prior to the incorporation of switchgear and controlgear components by the user, as supplied by the enclosure manufacturer. This standard specifies general definitions, classifications, characteristics and test requirements of enclosures to be used as part of assemblies. Although prepared with focus in the IEC 61439 series (low voltage) the concepts are also interesting for medium voltage switchgear. |
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17 P3 |
Some case studies to understand the basics of ATP / ATPDRAW The software ATP / ATPDRAW (Alternative Transient Program) is a free software originated from the EMTP for the calculation of voltages and currents transients. It is an excellent tool for daily use and certainly a mandatory tool for use by electrical engineers.
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18 Free |
A "GUIDE" FOR THE USE OF CALCULATIONS AND SIMULATION OF LABORATORY TESTS The document: S. Feitoza, "GUIDELINES FOR THE USE OF SIMULATIONS AND CALCULATIONS TO REPLACE SOME TESTS SPECIFIED IN INTERNATIONAL STANDARDS -. COGNITOR GUIDE 2010” Is a proposal for the text of a new technical standard. |
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19 P4 |
(SOFTWARE) DECIDIX for TECHNICAL ECONOMYCAL ASSESSMENT OF ENERGY PROJECTS (generation, transmission and distribution) WITH TRAINING The software Decidix is a tool developed to do feasibility studies for companies in the electrical sector. It is intended to be a tool to be used by people not skilled in financial mathematics techniques and to people without experience in technical questions which influence in the feasibility of the business, for example the fuel efficiency of a power plant. The focus is on projects of power generation with renewables (wind, small hydro, solar, biomass, and biodiesel), nonrenewable fuels (natural gas, coal, oil, nuclear), transmission lines, and distribution substations.
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20 P1 |
Fundaments of the design of high power and high voltage testing laboratories
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21 P3 |
Protection against explosions and fires in substations NBR 13231 - Fire Protection in conventional electrical substations of transmission systems. Procedure; |
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22 P4 |
One hour of consultancy work via videoconference with Sergio Costa Feitoza Sergio is the author of training and software. These consultancies are often used to ask or clarifying questions, to conduct studies of additional cases or for assistance in the development of equipment designs or designs of testing laboratories. |