Budapest University of Technology and Economics, Faculty of Electrical Engineering and Informatics

    címtáras azonosítással

    vissza a tantárgylistához   nyomtatható verzió    

    Laboratory of Specialisation

    A tantárgy neve magyarul / Name of the subject in Hungarian: Szigetelési rendszerek laboratórium

    Last updated: 2015. február 23.

    Budapest University of Technology and Economics
    Faculty of Electrical Engineering and Informatics


    Sustainable power engineering

    Selection and verification of insulating systems

    Course ID Semester Assessment Credit Tantárgyfélév
    VIVEAC08 6 0/0/3/f 4  
    3. Course coordinator and department Dr. Szedenik Norbert,
    5. Required knowledge

    Obtaining of base knowledge in the field of electrotechnics and electrical energetics in accordance with general technical program and in technical program for specialization.

    6. Pre-requisites
    (Szakirany("AVINvillszigr", _)
    VAGY Szakirany("AVIvillen", _) )

    ÉS NEM ( TárgyEredmény( "BMEVIVEA337" , "jegy" , _ ) >= 2
    TárgyEredmény("BMEVIVEA337", "FELVETEL", AktualisFelev()) > 0)

    A fenti forma a Neptun sajátja, ezen technikai okokból nem változtattunk.

    A kötelező előtanulmányi rendek grafikus formában itt láthatók.


    According to actual directives, included in Specialization and Department Regulation. Credits of course of Electrical Machines and Applications are advised to be obtained.

    7. Objectives, learning outcomes and obtained knowledge

    Elaborating of theoretical and practical knowledge, co-ordination of physical and computational models, promotion of practical skills.

    Studying line interactions and arcing phenomenon in switchgears in laboratory conditions, comparison of measured results with the theoretical ones.

    Practical study of several types of electrical motors and drives, based on different principles of operation. Laboratory practices supplement and support theoretical courses of the specialty.

    8. Synopsis

    In the field of electrical energy systems

    1. Line reaction of electric equipment 

    Measurement, calculation, and technical evaluation of  energy quality parameters by standardized methods

    2. Overcurrent protection

    Calculation of protection device adjustment. Modelling and testing of the network in cases of short-circuits of different types.

    In the field of the electrical machines:

    3. Investigation of induction machines

    Measurments of  the no-load and short-circuit parameters and diagrams of the induction motor. Real load motor measurements.

    4. Investigation  of the synchronous machines

    Measurements of  the no-load and short-circuit parameters and diagrams of the synchronous machine. Line synchronization of the rotating synchronous generator.  Measurement of the V-curves and current diagram

    5. Investigation of DC motor

    Measurement of output characteristic of a DC generator. Measurement of the mechanical (speed- moment) characteristic of a DC motor with auxiliary excitation. Measurement of efficiency of the whole motor-generator group.

    In the field of switchgears and equipments

    6. Ideal switch-off of DC and AC faults.

    Calculation and measurement of voltage appearing between the contacts of a switch in a model with discret parameters. The effect of the parameteres of the network.

    7. Investigation of the electric arc and arc interruption

    Measurement of the voltage-current and voltage-length characteristics and comparison to calculation results obtained from arc models. Interruption of AC and DC arc.

    8. Investigation of the operation of fuses and miniature circuit breakers.    

    Measuring the characteristics of a fuse model and a power circuit breaker.

    In the field of insulation and high voltage technology

    9. Investigation of dielectric characteristics

    Measurement of breakdown strength, volume and surface resistivity, loss factor and permittivity. Investigation of the connection berween the time dependence of the insulating resistance and the dielectric parameters. Measurement of returning voltage and the polarization spectra.

    10. Arrangement and investigation of electrostatic protected area

    Measurement of electrostatic charging in working site with and without protection. Estimation of the energy of electrostatic discharge without protection.

    11. Dielectric test methods based on partial discharges and reflectrometria

    Investigation of partial discharges and dielectric parameters regarding to local faults based on reflectrometrical method. Identifying of partial discharge types, evaluation of the results of electrical and non-electrical measurements. Relation of the parameters with the types of faults.

    12. Generation of high voltage

    Investigation of the circuit of impulse generator, relation of the parameters, voltage multiplication circuits.

    9. Method of instruction

    Laboratory measurements are 3 hours long 12 times in the semester, with one opportunity for supplement measurement

    10. Assessment

    In accordance with th Laboratory Regulations  it is obligatory:

    Study the measurement guides

    • Presence and correct group activity in the pointed place and time
    • Students shall be prepared, their knowledge will be controlled by the Lecturer
    • Individual or group measurement documentation  should be made in electronic form and sent to the Lecturer until the pointed deadline.

    Every laboratory practice result in an individual mark (based on the answers, activity, reports). The minimal requirement of successful semester is at least passed mark for all measurements. The mean value of the given marks for the laboratories gives the final mark of the subject.

    11. Recaps

    Maximum two opportunities are provided in one semester for supplement failed measurements (typically the last week before the end of semester and the next week)

    12. Consultations

    Consultation time is available on-demand after preliminary agreement

    13. References, textbooks and resources

    Laboratory measurement programs are based on measurement guides in electronic form, available on the department’s homepage.

    14. Required learning hours and assignment

    Contact hours


    Preparation work for lab measurements


    Measurement report