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VN laboratorij
HV laboratory
Laboratorij
Laboratory
Obratovanje
V podjetju imamo laboratorij opremljen z napravami za
opravljanje električnih in mehanskih meritev. V glavnem
je namenjen lastnim potrebam za izvajanje preskusov
od razvoja do validacije izdelka. Vršimo tudi usluge
za podjetja, raziskovalne institucije in izobraževalne
ustanove.
Na osnovi dobljenih rezultatov naši strokovnjaki izdajajo
preskusna poročila in strokovna mnenja.
Natančnost meritev in verodostojnost podatkov
zagotavljamo z rednim umerjanjem instrumentov s strani
akreditirane institucije.
Področje dela
Laboratorij je namenjen preskušanju SN prenapetostnih
odvodnikov in izolatorjev do 60 kV obratovalne napetosti.
Pri prenapetostnih odvodnikih se meritve izvajajo na
ZnO varistorskih blokih do 6 kV. Uporabljajo se močni
tokovni impulzi različnih oblik, kakor jih določata
standarda IEC 60099-4 in IEC 61643.
Preskusi izolatorjev se izvajajo z izmenično napetostjo do
višine 220 kV in z udarno napetostjo oblike vala 1,2/50 µs
do višine 500 kV.
Generator izmenične napetosti
Maksimalna amplituda trajne izmenične napetosti: 220 kV
Z generatorjem tvorimo trajno izmenično napetost, ki se
pri izolatorjih uporablja za določanje zdržne napetosti v
mokrem v skladu s standardi IEC 61109, IEC 61952 in IEC
60383.
Pri odvodnikih prenapetosti generator izmenične
napetosti uporabljamo za meritev referenčne napetosti v
skladu s standardi IEC 60099-4 in IEC 61643. Uporabljamo
ga tudi za meritev ohmske komponente uhajavega toka
odvodnikov prenapetosti.
Napetostni udarni generator
Maksimalna amplituda udarne napetosti 1,2/50 μs: 500 kV.
S temgeneratorjem tvorimo atmosfersko udarno napetost,
ki služi za preskušanje izolatorjev v skladu s standardi IEC
61109, IEC 61952, IEC 60383 in preskušanje odvodnikov
prenapetosti v skladu s standardom IEC 60099-4.
Operation
In the company we have a laboratory equipped with
devices for performing electrical and mechanical
measurements. We use the laboratory mostly for our own
needs to perform various tests from the early phase of
development to the final validation of a product. We also
perform services for other companies, research institutes,
and educational institutions. On bases of the results they
get, our experts issue test reports and expert opinions. We
assure accuracy of measurements and credibility of data
with regular calibration of instruments from an accredited
institution.
Fields of application
The laboratory is designed for testing MV surge arresters
and insulators with operating voltages up to 60 kV.
Surge arresters are tested on the ZnO varistor blocks up to
6 kV. High current impulses of different shapes are used for
testing, as defined by standards IEC 60099-4 and
IEC 61643.
Insulators are tested using power frequency voltage up to
220 kV and the lightning impulse voltage with wave shape
1,2/50 µs up to 500 kV.
Power frequency voltage generator
Peak value of the power-frequency voltage: 220 kV
The generator forms a continuous power frequency
voltage which is used to define a wet power frequency
withstand voltage at insulators in accordance with
standards IEC 61109, IEC 61952 and IEC 60383.
The same generator is used to define a reference
voltage of surge arresters in accordance with IEC 60099-4
and IEC 61643. It is also used to measure
a resistive component of the leakage current of
surge arresters.
Lightning impulse voltage generator
Peak value of lightning impulse 1,2/50 μs: 500 kV.
With this generator, a lightning impulse voltage can
be generated to test the insulators in accordance with
standards IEC 61109, IEC 61952 and IEC 60383 and to test
surge arresters in accordance with standard IEC 60099-4.
9.1 Splošno
9.1 Generally
9.2 Tehnične zmogljivosti
9.2 Technical efficiencies
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