Page 90 - IZOELEKTRO catalogue 06-2020

7 VN laboratorij HV laboratory

7.1 Splošno 7.1 Generally

Obratovanje Operation
V podjetju imamo laboratorij, In the company, we have a
opremljen z napravami za opra- laboratory equipped with devices
vljanje električnih in mehanskih for performing electrical and
meritev. V glavnem je namenjen mechanical measurements. We use
lastnim potrebam za izvajanje the laboratory mostly for our own
preskusov od razvoja do valida- needs to perform various tests from
cije izdelka. Vršimo tudi usluge the early phase of development to
za podjetja, raziskovalne institu- the final validation of a product.
cije in izobraževalne ustanove. We also perform services for other
Na osnovi dobljenih rezultatov companies, research institutes,
naši strokovnjaki izdajajo pre- and educational institutions. Based
skusna poročila in strokovna on results they get, our experts
mnenja. Natančnost meritev in verodostojnost podatkov issue test reports and expert opinions. We verify that our
zagotavljamo z rednim umerjanjem instrumentov s strani measurements are accurate and data credible with regular
pooblaščene institucije. calibrations of instruments from an authorized institution.

Področje dela Fields of application
Laboratorij je namenjen preskušanju SN prenapetostnih The laboratory is designed for testing MV surge arresters
odvodnikov in izolatorjev do 60 kV obratovalne napetosti. and insulators of operating voltage up to 60 kV.
Pri prenapetostnih odvodnikih se meritve izvajajo na blokih Surge arresters are tested on the blocks up to 6 kV. High
do 6 kV. Uporabljajo se močni tokovni impulzi različnih oblik, current pulses of different shapes are used for testing, as
kakor jih določata standarda IEC 60099-4 in IEC 61643. defined by the IEC 60099-4 and IEC 61643 standards.

Preskusi izolatorjev se izvajajo z izmenično napetostjo do Insulators are tested using power frequency voltage of
višine 220 kV in z udarno napetostjo oblike vala 1,2/50 μs up to 220 kV and the lightning impulse voltage with wave
do višine 500 kV. shape of 1,2/50 μs and up to 500 kV.

7.2 Tehnične zmogljivosti 7.2 Technical capabilities

Generator izmenične napetosti Power frequency voltage generator
Maksimalna amplituda trajne izmenične napetosti: 220 kV Peak value of the power-frequency voltage: 220 kV

Z generatorjem tvorimo trajno izmenično napetost, ki se pri The generator produces a continuous power frequency
izolatorjih uporablja za določanje zdržne napetosti v mokrem voltage which is used to define the isulator wet power
v skladu s standardi IEC 61109, IEC 61952 in IEC 60383. frequency withstand voltage in accordance with the IEC
Pri odvodnikih prenapetosti generator izmenične napetosti 61109, IEC 61952 and IEC 60383 standards.
uporabljamo za meritev referenčne napetosti v skladu s The same generator is used to define the reference
standardi IEC 60099-4 in IEC 61643. Uporabljamo ga voltage of surge arresters in accordance with IEC 60099-
tudi za meritev ohmske komponente uhajavega toka 4 and IEC 61643. It is also used to measure the leakage
odvodnikov prenapetosti. current resistive component of surge arresters.

Napetostni udarni generator Lightning impulse voltage generator
Maksimalna amplituda udarne napetosti 1,2/50 μs: 500 kV Peak value of lightning impulse 1,2/50 μs: 500 kV With this
S tem generatorjem tvorimo atmosfersko udarno napetost, generator, a lightning impulse voltage can be generated
ki služi za preskušanje izolatorjev v skladu s standardi to test the insulators in accordance with the IEC 61109,
IEC 61109, IEC 61952, IEC 60383 in preskušanje odvodnikov IEC 61952 and IEC 60383 standards and to test surge
prenapetosti v skladu s standardom IEC 60099-4. arresters in accordance with the IEC 60099-4 standard.

Tokovni udarni generator Lightning current impulse generator
Maksimalna amplituda udarnega toka: Peak value of the lightning impulse current:
• 10/350 μs 50 kA • 10/350 μs 50 kA
• 8/20 μs 50 kA • 8/20 μs 50 kA
• 4/10 μs 100 kA • 4/10 μs 100 kA
• 2 ms 1000 A • 2 ms 1000 A

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